technical innovation delivery in small and medium ...11… · hardie, m. (2009), ‘construction...
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TECHNICAL INNOVATION DELIVERY IN SMALL AND
MEDIUM CONSTRUCTION ENTERPRISES
By
Mary Hardie
This thesis is submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy at University of Western Sydney (UWS), Sydney, Australia.
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DECLARATION
This thesis has been prepared by me to meet the requirements of a Doctor of
Philosophy degree at the University of Western Sydney.
I declare that this thesis is my own work except where due acknowledgement is made.
It has not been submitted as a thesis or dissertation at any other institution for a
degree, diploma or any other qualification.
All possible care has been taken in the preparation of the information in this thesis
however; any liability for the accuracy and sufficiency of this information is expressly
disclaimed.
Signed
Mary Hardie
Date
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ACKNOWLEDGMENTS
The subject of this thesis is the creative effort involved by small and medium-sized
construction companies in delivering technical innovation. The time and assistance
provided by the busy managers of these companies is gratefully acknowledged, as is
the support of industry and professional bodies in the construction sector in the
identification of suitable innovative companies.
Invaluable advice in the preparation of this thesis has been provided by my colleagues
at the University of Western Sydney, most notably by my supervisors Associate
Professor Jonathon Allen, Professor Graeme Newell and Dr. Swapan Saha. Dr. Karen
Manley of Queensland University of Technology provided guidance and
encouragement, as did several former colleagues at UWS, notably Professor Alan
Jeary and Associate Professor Graham Miller.
Lastly I would like to thank my family and recognise their support. My husband
Larry Hardie provided unfailing good humour and a down-to-earth attitude which
helped to keep things in perspective. Our adult children, Alice, James and Benedict
were constant in their encouragement and understanding. My late parents, Leo and
Kathleen Roche instilled in all their children the belief that education is worth the
effort and can provide the opportunity for personal fulfilment.
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PREFACE
The work described herein was undertaken by the candidate in the School of
Engineering, UWS. The candidate was supervised by Associate Professor Jonathon
Allen, Professor Graeme Newell and Dr. Swapan Saha during the period from
January 2008 to December 2010. In addition, in the early stages, Professor Alan
Jeary supervised the candidate.
The thesis has been supported by papers that have been submitted for consideration,
accepted or published in international journals and conferences. The papers
concerned are listed below along with some citations for the early work.
Book chapters
Manley, K., Hardie, M. and Kajewski, S. (2009), ‘Innovation drivers for the built environment’, In Technology, Design and Process Innovation in the Built Environment, P. Newton, K. Hampson and R. Drogemuller Eds. Taylor and Francis, London.
Hardie, M. and Manley, K. (2008), ‘Exemplars of successful innovation delivery by small and medium construction enterprises.’ In "Clients Driving Innovation: Benefiting from Innovation", Hampson, K. ed. CRC Construction Innovation, Brisbane.
Refereed journal articles
Wong, P.S.P., Cheung, S.O., Yiu, R.L.Y. and Hardie, M. (2012), ‘The unlearning dimension of organizational learning in construction projects’, International Journal of Project Management,30 (1), 94-104.
Hardie, M. and Newell, G. (2011), ‘Factors influencing technical innovation in construction SMEs: an Australian perspective’, Engineering Construction and Architectural Management, 18 (6), 618-636.
Hardie, M. (2010), ‘Influences on innovation in small Australian construction businesses’, Journal of Small Business and Enterprise Development, 17 (3), 387-402.
Hardie, M. (2010), ‘Rainwater storage gutters for houses’, Sustainability, 2(1), 266-279.
Hardie, M. and Saha, S. (2009), 'Builders' perceptions of lowest cost procurement and its impact on quality', Australasian Journal of Construction Economics and Building, 9(1), 1-8.
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Refereed conference papers
Hardie, M. (2009), ‘Construction industry culture and innovation: An Australian perspective’, Global Innovation in Construction Conference, Loughborough University, UK. pp 106-116.
Hardie, M. and Manley, K. (2008), ‘Enabling factors for innovation in small business.’ Third International Conference of the Cooperative Research Centre for Construction Innovation Clients Driving Innovation: Benefiting from Innovation’, CRC Construction Innovation, Surfers Paradise, Queensland, 12 - 14 March 2008.
The following publications derived from research in the area of construction
innovation undertaken before enrolment for this thesis:
Refereed journal articles
Hardie, M., Miller, G., Manley, K. and McFallan, S. (2006), ‘Innovation performance and its impact on profitability among different sectors in the Australian construction industry.’ Australian Journal of Construction Economics and Building, 6(1), 1-11.
Refereed conference papers
Hardie, M., Miller, G., Manley, K. and McFallan, S. (2005), ‘Experience with the management of technological innovations within the Australian construction industry.’ Proceedings of PICMET '05 Conference, Portland, Oregon, USA.
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The publications mentioned above have received the following citations in refereed
publications:
For PICMET paper 2005
Gambatese, J.A. and Hallowell, M. (2011), 'Factors that influence the development and diffusion of technical innovations in the construction industry ', Construction Management and Economics 29 (5), 507-17.
Son, H., Kim, C., Kim, H, Han, S.H., and Kim, M.K. (2010), ‘Trend analysis of research and development on automation and robotics technology in the construction industry’ KSCE Journal of Civil Engineering 14 (2), 131-139.
Manley, K., McFallan, S., and Kajewski, S. (2009), ‘Relationship between Construction Firm Strategies and Innovation Outcomes’, Journal of Construction Engineering and Management-ASCE, 135 (8), 764-71.
Manley, K. and McFallan, S. (2008), ‘Business Strategies Supporting Effective Implementation of Innovation by Project-Based Firms’, Academy of Management 2008 Annual Meeting, Anaheim, U.S., August 8 to 13
Correa, C. L., Yepes, V., and Pellicer, E. (2007), "Determinant issues and proposals for the management of innovation in construction companies." Revista ingeniería de construcción, 22(1), 5-14.
Manley, K. and McFallan, S. (2005), The Relationship between Business Strategies and Successful Innovation TASA Conference 2005, University of Tasmania, 6-8 December 2005. Available at: http://www.tasa.org.au/conferencepapers05/papers%20(pdf)/work_manley.pdf
For CRC conference paper 2008
Colesca, S.E. and Dobrin, C. (2009), 'A review of the literature on the determinants of innovation', Review of International Comparative Management, 2, 763-68.
Construction Engineering and Management Group UNB CEM Project: NSCSC-1 (2010), 'Functional Information Technology Phase 1 Detailed Analysis', Department of Civil Engineering, University of New Brunswick, New Brunswick, Nova Scotia.
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TABLE OF CONTENTS
TECHNICAL INNOVATION DELIVERY IN SMALL AN D MEDIUM CONSTRUCTION ENTERPRISES ................................................................. I
DECLARATION ......................................................................................................... ii
ACKNOWLEDGMENTS .......................................................................................... iii
PREFACE ................................................................................................................... iv
TABLE OF CONTENTS ........................................................................................... vii
LIST OF FIGURES .................................................................................................. xiv
LIST OF TABLES ................................................................................................... xvii
LIST OF ABBREVIATIONS ..................................................................................... xx
EXECUTIVE SUMMARY ...................................................................................... xxi
CHAPTER 1 INTRODUCTION ............................................................................. 1
1.1 Background .......................................................................................................... 1
1.2 Research aim and objectives ................................................................................ 4
1.3 Significance ......................................................................................................... 5
1.4 Research methodology ......................................................................................... 6
1.5 Structure of the thesis .......................................................................................... 6
1.6 Limitations ........................................................................................................... 8
1.7 Conclusion .......................................................................................................... 9
CHAPTER 2 THE RESEARCH CONTEXT ...................................................... 11
2.1 Construction industry culture and innovation .................................................... 11
2.1.1 Is construction unique? .......................................................................... 12
2.1.2 Importance of the construction industry ................................................ 14
2.1.3 The need for change .............................................................................. 15
2.2 Resistance to change .......................................................................................... 18
2.2.1 Many very small businesses and independent workers ......................... 19
2.2.2 Insecurity of employment ...................................................................... 20
2.2.3 Tacit nature of industry knowledge ....................................................... 20
2.2.4 Lack of human resource management expertise ................................... 21
2.2.5 Risk shifting .......................................................................................... 22
2.2.6 Project-based nature of the industry ...................................................... 22
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2.2.7 Lowest price procurement ..................................................................... 23
2.2.8 Supply chain complexity ....................................................................... 23
2.2.9 Resistance to standardisation ................................................................. 24
2.2.10 Industry self-perception – the theory of construction............................ 25
2.3 Theories of invention and innovation ................................................................ 26
2.3.1 The significance of the individual inventor/innovator .......................... 28
2.3.2 The significance of the entrepreneur ..................................................... 29
2.3.3 Technology leadership .......................................................................... 29
2.3.4 Innovation funding ................................................................................ 30
2.4 Innovation definitions and statistics .................................................................. 31
2.4.1 The Oslo Manual and its scope ............................................................. 31
2.4.2 Products versus services ........................................................................ 32
2.4.3 Firm level focus ..................................................................................... 32
2.4.4 Technological versus other kinds of innovation .................................... 33
2.4.5 ‘New to the firm’ innovation diffusion ................................................. 33
2.4.6 Technical and organisational innovation ............................................... 34
2.4.7 Australian Bureau of Statistics Survey .................................................. 34
2.4.8 BRITE Survey ....................................................................................... 37
2.5 SME definition in the Australian context .......................................................... 38
2.5.1 Construction SME contribution to GDP ............................................... 40
2.5.2 Characteristics of construction SMEs ................................................... 42
2.6 Taxonomy of construction innovation ............................................................... 43
2.7 Construction innovation literature ..................................................................... 45
2.7.1 Five major categories of factors affecting technical innovation ........... 47
2.8 Company resources ............................................................................................ 48
2.8.1 Personal motivation ............................................................................... 49
2.8.2 Available financial resources ................................................................ 50
2.8.3 Available time ....................................................................................... 50
2.8.4 Available skill levels ............................................................................. 51
2.8.5 Insurance/risk ........................................................................................ 52
2.9 Client and end-user influences ........................................................................... 53
2.9.1 Procurement systems ............................................................................. 54
2.9.2 Client characteristics ............................................................................. 56
2.10 Project-based conditions .................................................................................... 57
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2.10.1 Supply chain relationships ..................................................................... 58
2.10.2 On site problem solving ........................................................................ 59
2.10.3 Occupational health and safety (OH&S) improvement......................... 59
2.11 Industry networks .............................................................................................. 60
2.11.1 Professional and industry associations .................................................. 61
2.11.2 Research organisations and universities ................................................ 63
2.12 Regulatory climate ............................................................................................. 64
2.12.1 Performance-based standards ................................................................ 64
2.12.2 Industry standards .................................................................................. 66
2.12.3 Local government regulations ............................................................... 66
2.13 Summary of results from the literature review .................................................. 67
CHAPTER 3 RESEARCH METHODOLOGY ................................................... 70
3.1 Mixed methodology research ............................................................................. 70
3.1.1 Debate over quantitative research in construction management ........... 71
3.1.2 ‘Paradigm wars’ .................................................................................... 72
3.1.3 The case for mixed methods in a developing discipline........................ 73
3.2 Mixed method strategies .................................................................................... 74
3.2.1 Evaluation of strategies ......................................................................... 76
3.3 Selection of qualitative method ......................................................................... 77
3.3.1 Structured interviews ............................................................................. 77
3.3.2 Ethnographic studies ............................................................................. 78
3.3.3 Grounded theory .................................................................................... 79
3.3.4 Action research ...................................................................................... 79
3.3.5 Content analysis techniques .................................................................. 80
3.3.6 Case studies ........................................................................................... 80
3.4 Selection of quantitative method ....................................................................... 81
3.4.1 Statistically representative questionnaires ............................................. 81
3.4.2 Computer simulations ............................................................................ 82
3.4.3 Goal-oriented decision-making ............................................................. 82
3.5 Methodology for evaluating convergence in the data sets ................................. 82
CHAPTER 4 DECISION MAKING METH ODOLOGIES ............................... 84
4.1 Decision making problems ................................................................................ 84
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4.2 Multi Criteria Decision Making (MCDM) methodologies ................................ 87
4.2.1 Ranking methodologies ......................................................................... 88
4.2.2 Cut-off methodologies ........................................................................... 90
4.2.3 Prioritizing of alternatives methodologies ............................................ 90
4.2.4 Scoring methodologies .......................................................................... 91
4.2.5 Elimination methodologies .................................................................... 92
4.2.6 Ideal solution methodologies ................................................................. 94
4.2.7 Weighted comparison methodologies ................................................... 94
4.2.8 Alternative preference methodology ..................................................... 95
4.3 Selection of AHP methodology ......................................................................... 99
CHAPTER 5 SURVEY OF TECHNICAL INNOVATORS IN CONSTRUCTION SMES ............................................................................. 101
5.1 AHP Value Tree ............................................................................................... 101
5.2 Selection of survey respondents ...................................................................... 103
5.3 Characteristics of survey respondents .............................................................. 104
5.4 Patents on technical innovations ...................................................................... 107
5.5 Detailed methodology for survey .................................................................... 109
5.5.1 Step 1: The decision hierarchy ............................................................ 112
5.5.2 Step 2: Data collection ........................................................................ 114
5.5.3 Step 3: Estimates of weightings .......................................................... 114
5.5.4 Step 4: Aggregation of results ............................................................. 116
5.6 Survey data analysis software .......................................................................... 116
5.7 Inconsistency in survey response ..................................................................... 116
5.8 ANOVA for sample sub-groups ...................................................................... 118
5.9 Regression and correlation ............................................................................... 118
5.10 Other information collected at the time of the survey ..................................... 120
5.11 Survey process and time-frame ........................................................................ 123
5.12 Face-to-face surveys ........................................................................................ 128
CHAPTER 6 ANALYSIS OF FACTORS AFFECTING INNOVATION DELIVERY ..................................................................................................... 131
6.1 Survey results for the whole sample ................................................................ 131
6.2 Sub-factor weightings ...................................................................................... 134
6.3 Sub-groups within the overall sample ............................................................. 138
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6.4 Small versus medium business results ............................................................. 138
6.5 Building product versus building process innovators ...................................... 143
6.6 Patent holders versus non-patent holders ......................................................... 148
6.7 Preliminary results summary ........................................................................... 152
6.8 ANOVA ........................................................................................................... 152
6.9 Correlation and regression ............................................................................... 160
6.10 Correlations for sample sub-groups ................................................................. 164
6.11 Regression analysis .......................................................................................... 176
6.12 Summary of statistical results .......................................................................... 181
6.13 Survey respondents open-ended comments ..................................................... 181
6.14 Limitations of the data derived from the AHP study ....................................... 187
6.14.1 Inconsistency factor in AHP ................................................................ 189
6.14.2 Some possible reasons for inconsistency in the survey results ........... 200
CHAPTER 7 SELECTED CASE STUDY EXEMPLARS OF INNOVATION DELIVERY ..................................................................................................... 202
7.1 Case study purpose statement .......................................................................... 202
7.1.1 Explanation of case study significance................................................ 203
7.1.2 Case study information ........................................................................ 203
7.1.3 Case study identity disclosure ............................................................. 204
7.2 Case study 1: Rapid setting volumetric concrete ............................................. 206
7.2.1 Slaughter’s taxonomy .......................................................................... 211
7.2.2 Strategies that support successful innovation delivery ........................ 211
7.2.3 Innovator comments ............................................................................ 213
7.2.4 Lessons from this experience .............................................................. 213
7.3 Case Study 2: Lightweight impervious concrete block ................................... 214
7.3.1 Slaughter’s taxonomy .......................................................................... 219
7.3.2 Strategies that support successful innovation delivery ........................ 219
7.3.3 Innovator comments ............................................................................ 222
7.3.4 Lessons from this experience .............................................................. 223
7.4 Case Study 3: Under floor water storage bladders .......................................... 224
7.4.1 Slaughter’s taxonomy .......................................................................... 228
7.4.2 Strategies that support successful innovation delivery ........................ 228
7.4.3 Innovator comments ............................................................................ 228
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7.4.4 Lessons from this experience .............................................................. 228
7.5 Case Study 4: Cylindrical concrete formwork tubes ....................................... 229
7.5.1 Slaughter’s taxonomy .......................................................................... 231
7.5.2 Strategies that support successful innovation delivery ........................ 232
7.5.3 Innovator comments ............................................................................ 232
7.5.4 Lessons from this experience .............................................................. 232
7.6 Case Study 5: Salt-removing sacrificial render to restore deteriorating masonry
walls ................................................................................................................. 233
7.6.1 Slaughter’s taxonomy .......................................................................... 236
7.6.2 Strategies that support successful innovation delivery ........................ 236
7.6.3 Innovator comments ............................................................................ 236
7.6.4 Lessons from this experience .............................................................. 237
7.7 Case Study 6: Rollover warning system for articulated construction plant ..... 238
7.7.1 Slaughter’s taxonomy .......................................................................... 240
7.7.2 Strategies that support successful innovation delivery ........................ 240
7.7.3 Innovator comments ............................................................................ 240
7.7.4 Lessons from this experience .............................................................. 240
7.8 Case Study 7: Dry wall noise barrier ............................................................... 241
7.8.1 Slaughter’s taxonomy .......................................................................... 243
7.8.2 Strategies that support successful innovation delivery ........................ 243
7.8.3 Innovator comments ............................................................................ 243
7.8.4 Lessons from this experience .............................................................. 244
7.9 Case study innovation results and implications ............................................... 244
7.10 Vectors affecting technical innovation ............................................................ 251
CHAPTER 8 A MODEL OF SME TECHN ICAL INNOVATION DELIVERY .......................................................................................................................... 255
8.1 Convergence of methodologies at factor level ................................................ 255
8.1.1 Regulatory climate............................................................................... 255
8.1.2 Client and end-user influences ............................................................ 256
8.1.3 Industry networks ................................................................................ 256
8.1.4 Project-based conditions ...................................................................... 257
8.1.5 Company resources ............................................................................. 257
8.2 Convergence of methodologies at sub-factor level .......................................... 257
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8.2.1 Client characteristics ........................................................................... 258
8.2.2 Improving Occupational Health and Safety ........................................ 258
8.2.3 Performance-based standards .............................................................. 259
8.2.4 Professional and industry associations ................................................ 259
8.2.5 Research organisations and universities .............................................. 259
8.2.6 Supply chain relationships ................................................................... 260
8.2.7 Personal motivation ............................................................................. 260
8.2.8 Procurement systems and solving problems on site ............................ 261
8.2.9 Available skill levels ........................................................................... 261
8.2.10 Remaining sub-factors ......................................................................... 261
8.3 Innovation delivery model ............................................................................... 262
CHAPTER 9 CONCLUSIONS AND RECOMMENDATIONS ...................... 267
9.1 A matter of pre-existing resources? ................................................................. 267
9.2 Findings for aspiring innovators in SMEs ....................................................... 269
9.3 Findings for industry bodies and professional organisations ........................... 270
9.4 Findings for researchers ................................................................................... 271
9.5 Findings for governments and regulators ........................................................ 272
9.6 Contribution of this research ............................................................................ 274
9.7 Summary of outcomes from the research objectives ....................................... 277
9.8 Future research directions ................................................................................ 278
9.9 Conclusion ....................................................................................................... 279
REFERENCES ........................................................................................................ 281
APPENDICES ......................................................................................................... 314
Appendix 1 – Survey Script ...................................................................................... 314
Appendix 2 - Participant Information Sheet ............................................................. 322
Appendix 3 – Participant Consent Form ................................................................... 324
Appendix 4 – International definitions of SMEs ...................................................... 325
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LIST OF FIGURES
Figure 1.1 Diagrammatic relationship between innovation and invention ........... 2
Figure 1.2 Proportion of businesses undertaking new goods and services
innovations ........................................................................................... 4
Figure 2.1 Taxonomy of theories of invention (Based on Kaiserfledt 2006 p.6) 27
Figure 2.2 Percentage of Innovation Active Businesses by sector 2006-2007
(ABS 2008a) ...................................................................................... 35
Figure 2.3 Percentage of Goods and Services Innovation Active Businesses by
sector 2006-2007 (ABS 2008a) ......................................................... 36
Figure 2.4 Percentage of Operational Process Innovation Active Businesses by
sector 2006-2007 (ABS 2008a) ......................................................... 37
Figure 2.5 Slaughter’s taxonomy of innovation (Based on Slaughter 1998,
p.229) .....................................................................................................
...............................................................................................................
........................................................................................................... 44
Figure 3.1 Concurrent Triangulation Strategy: Convergence Model .................. 77
Figure 5.1 Value Tree of factors affecting technical innovation in construction
......................................................................................................... 102
Figure 5.2 Sample survey question ................................................................... 109
Figure 5.3 Pair-wise comparisons from the Value Tree .................................... 110
Figure 5.4 General form of a hierarchical structure .......................................... 113
Figure 6.1 Mean weighting for Value Tree factors with 5% error bars ............ 134
Figure 6.2 Mean weighting for Value Tree sub-factors with 5% error bars ..... 135
Figure 6.3 Bar chart of small and medium-sized business average response on
factors with 5% error bars ................................................................ 140
Figure 6.4 Bar chart of small and medium-sized business average response on
sub-factors with 5% error bars ......................................................... 142
Figure 6.5 Bar chart of product and process innovators average response on
factors with 5% error bars ................................................................ 146
Figure 6.6 Bar chart of product and process innovators average response on sub-
factors with 5% error bars ................................................................ 147
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Figure 6.7 Bar chart of patent holders and non-patent holder’s average response
on factors with 5% error bars ........................................................... 150
Figure 6.8 Bar chart of patent holder’s and non-patent holder’s average response
on sub-factors with 5% error bars .................................................... 151
Figure 6.9 Scatter plot and linear trend line for ‘Personal motivation’ versus
‘Available time’ ............................................................................... 179
Figure 6.10 Scatter plot and linear trend line for ‘Available skill levels’ versus
‘Available finance’ .......................................................................... 179
Figure 6.11 Scatter plot and linear trend line for ‘Professional and industry
associations’ versus ‘Research organisations and universities’ ....... 180
Figure 7.1 Volumetric concrete mixer with separate bins for cement, sand and
aggregate .......................................................................................... 208
Figure 7.2 Mixer getting ready to pour ............................................................. 208
Figure 7.3 Pour has commenced ....................................................................... 209
Figure 7.4 Pour complete and slab being finished off ....................................... 209
Figure 7.5 Resin-based curing compound being sprayed on slab ..................... 210
Figure 7.6 One hour after the pour, the mixer truck is driven onto the new slab....
......................................................................................................... 210
Figure 7.7 Industry Open Day demonstrations held every few months ............ 212
Figure 7.8 Industry demonstrations of related products .................................... 212
Figure 7.9 Block dimensions ............................................................................. 216
Figure 7.10 Block details ..................................................................................... 217
Figure 7.11 Lightweight impervious concrete block ........................................... 218
Figure 7.12 Cut block showing polystyrene bead interior ................................... 218
Figure 7.13 Retaining wall to garage not requiring waterproofing ..................... 220
Figure 7.14 Upper storey walls under construction ............................................. 220
Figure 7.15 Block wall under construction showing closer blocks ..................... 221
Figure 7.16 Internal wall face to be finished with plasterboard .......................... 221
Figure 7.17 Building design to incorporate sub-floor water bladders ................. 226
Figure 7.18 Water bladder compartments in sub-floor space .............................. 226
Figure 7.19 WaterCell® being installed .............................................................. 227
Figure 7.20 Full WaterCell® in place ................................................................. 227
Figure 7.21 Formwork tube being put in place ................................................... 230
Figure 7.22 Formwork tube being removed ........................................................ 231
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Figure 7.23 Fort Denison in Sydney Harbour ..................................................... 234
Figure 7.24 Salt affected stonework .................................................................... 234
Figure 7.25 Elizabeth Farmhouse in Parramatta, NSW (c 1790), one of the oldest
European structures in Australia ...................................................... 235
Figure 7.26 Sacrificial render in place at Elizabeth Farmhouse and later being
peeled off ......................................................................................... 235
Figure 7.27 Rollover management system .......................................................... 239
Figure 7.28 Cut away model of QuietWave® wall .............................................. 242
Figure 7.29 QuietWave® compared to other sound reducing walls in current use ...
......................................................................................................... 242
Figure 7.30 Vectors of SME technical innovation .............................................. 252
Figure 8.1 A model of technical innovation by construction SMEs ................. 264
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LIST OF TABLES
Table 2.1 Numbers of businesses in construction .............................................. 39
Table 2.2 Construction industry contribution to Industry Value Added (IVA)
2006-2007 (ABS 2008b) .................................................................... 41
Table 2.3 Construction industry contribution to sales and service income 2006-
2007 (ABS 2008b) ............................................................................. 41
Table 2.4 Occurrence of construction innovation themes.................................. 46
Table 4.1 Comparison of methodologies (Ranking methodologies, cut-off
methodologies, prioritising of alternatives methodologies)............... 97
Table 4.2 Comparison of methodologies (Scoring methodologies, elimination
methodologies, ideal solution methodologies, qualitative data
methodologies, alternative preference methodologies) ..................... 98
Table 5.1 Source of survey respondents .......................................................... 106
Table 5.2 Classification of survey respondents ............................................... 107
Table 5.3 Descriptions of innovations studied ................................................. 108
Table 5.4 The fundamental scale verbal descriptions of pair-wise comparisons
in AHP ............................................................................................. 111
Table 5.5 Descriptors for survey open-ended comments ................................. 122
Table 5.6 Synonyms/prompt words/explanations for Value Tree factors ....... 124
Table 5.7 Synonyms/prompt words/explanations for Value Tree sub-factors of
company resources ........................................................................... 125
Table 5.8 Synonyms/prompt words/explanations for Value Tree sub-factors of
client and end-user influences .......................................................... 126
Table 5.9 Synonyms/prompt words/explanations for Value Tree sub-factors of
project-based conditions .................................................................. 126
Table 5.10 Synonyms/prompt words/explanations for Value Tree sub-factors of
industry networks ............................................................................. 127
Table 5.11 Synonyms/prompt words/explanations for Value Tree sub-factors of
the regulatory climate ...................................................................... 127
Table 5.12 AHP studies based on selected expert samples ............................... 129
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Table 6.1 AHP weightings for factors affecting SME technical innovation
delivery ..................................................................................................
......................................................................................................... 132
Table 6.2 Technical innovation delivery multi-criteria decision-making priority
summary ........................................................................................... 136
Table 6.3 AHP weightings: small versus medium-sized businesses ............... 139
Table 6.4 AHP weightings: product versus process innovators ...................... 144
Table 6.5 AHP weightings: patent holders versus no patents .......................... 149
Table 6.6 Results from ANOVA on factors by company size ......................... 153
Table 6.7 Significant results from ANOVA on factors by innovation type .... 154
Table 6.8 Significant results from ANOVA on factors by patent .................... 155
Table 6.9 Results from ANOVA on sub-factors by company size .................. 157
Table 6.10 Results from ANOVA on sub-factors by innovation type ............... 158
Table 6.11 Results from ANOVA on sub-factors by patent holding ................. 159
Table 6.12 Correlations between factors for the whole sample ......................... 161
Table 6.13 Correlations between sub-factors – whole sample........................... 162
Table 6.14 Correlations between factors for the small and medium business sub-
groups ............................................................................................... 165
Table 6.15 Correlations between factors for the product and process innovator
sub-groups ........................................................................................ 166
Table 6.16 Correlations between factors for patent holder and no patent sub-
groups .....................................................................................................
...............................................................................................................
......................................................................................................... 167
Table 6.17 Correlations between sub-factors for the small business sub-group 170
Table 6.18 Correlations between sub-factors for the medium business sub-group
......................................................................................................... 171
Table 6.19 Correlations between sub-factors for the product innovator sub-group
...............................................................................................................
......................................................................................................... 172
Table 6.20 Correlations between sub-factors for the process innovator sub-group.
...............................................................................................................
......................................................................................................... 173
Table 6.21 Correlations between sub-factors for the patent holder sub-group .. 174
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Table 6.22 Correlations between sub-factors for the non-patent holder sub-group.
...............................................................................................................
......................................................................................................... 175
Table 6.23 Regression values for factor pairs .................................................... 177
Table 6.24 Regression values for sub-factor pairs ............................................. 178
Table 6.25 Common economic themes in the open-ended comments by survey
respondents ...................................................................................... 183
Table 6.26 Common relationship themes in the open-ended comments by survey
respondents ...................................................................................... 184
Table 6.27 Common structural themes in the open-ended comments by survey
respondents ...................................................................................... 186
Table 6.28 Inconsistency factors ........................................................................ 190
Table 6.29 Standard Deviation of AHP factor weightings ................................ 192
Table 6.30 Standard Deviation of AHP subfactor weightings ........................... 193
Table 6.31 Standard Deviation of AHP factor weightings for small and medium
sized businesses ............................................................................... 194
Table 6.32 Standard Deviation of AHP sub-factor weightings for small and
medium sized businesses ................................................................. 195
Table 6.33 Standard Deviation of AHP factor weightings for product and process
innovators ......................................................................................... 196
Table 6.34 Standard Deviation of AHP sub-factor weightings for product and
process innovators ............................................................................ 197
Table 6.35 Standard deviation of AHP factor weightings for patent holders and
non-patent holders ............................................................................ 198
Table 6.36 Standard Deviation of AHP factor weightings for patent holders and
non patent holders ............................................................................ 199
Table 7.1 Comparison of blocks with alternatives available ........................... 222
Table 7.2 Case study company characteristics................................................. 245
Table 7.3 Case study innovation characteristics .............................................. 246
Table 7.4 Descriptive innovation categories .................................................... 248
Table 7.5 Prime reason for successful innovation delivery ............................. 249
Table 7.6 Case study descriptions .................................................................... 250
Table 7.7 Drivers of SME technical innovation development ......................... 253
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LIST OF ABBREVIATIONS
ABS Australian Bureau of Statistics
AHP Analytic Hierarchy Process
AIB Australian Institute of Building
AIQS Australian Institute of Quantity Surveyors
ASTM American Society for Testing and Materials
ATS Australian Technology Showcase
BRANZ Building Research Australia and New Zealand
BRITE Building Research on Innovation Technology and Environment
CCF Civil Contractors Federation
CRC CI Cooperative Research Centre for Construction Innovation
CSIRO Commonwealth Scientific and Industrial Research Organisation
EA Engineers Australia
GDP Gross Domestic Product
MBA Master Builders Association
MCDM Multi Criteria Decision Making
NATA National Association of Testing Authorities
OECD Organisation for Economic Cooperation and Development
OH&S Occupational Health and Safety
SBA United States Small Business Administration
SME Small and Medium-sized Enterprise
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EXECUTIVE SUMMARY
This study investigates occurrences of technical innovation successfully delivered by
Small and Medium Enterprises (SMEs) in the construction industry in the Greater
Sydney area. A literature search identified five factors that potentially affect the
delivery of technical innovation. These can be summarised under the headings:
• Company resources;
• Client and end-user influences;
• Project-based conditions;
• Industry networks;
• The regulatory climate.
Under each factor, several related sub-factors were also identified.
Mixed method research
Because the management of innovation essentially involves a human element, it was
decided that a mixed methods approach would be taken. Any convergences that
emerge in the results from the different research strategies can be seen as equating to
robustness in the conclusions that may be drawn.
Purposive sampling was used to identify potential respondents to a quantitative
survey. The main eligibility criterion was a proven track record in delivering a
significant technical innovation in the construction market. As the surveys were
carried out face-to-face, respondents were restricted to locations in the greater Sydney
region and the western hinterland as far as Bathurst in regional NSW. The
information contained in the surveys was de-identified for ethical reasons and only
aggregate data is presented in this thesis.
Seven illustrative case studies which represent the storylines of successful innovation
delivery are presented in this thesis. All the technical innovations studied involve
significant measurable improvements which may be measured in economic,
environmental or social terms and some represent improvements in multiple fields.
The case studies were chosen because they represent unique examples of a relatively
rare phenomenon; that is, the successful delivery of a high-level technical innovation
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by a SME construction company. Information on the seven case studies was gathered
from multiple sources including trade literature, industry-focused magazines,
company websites and personal observation. The case studies were classified by
descriptive innovation categories depending on whether the innovation was
considered to be proactive or reactive, bounded or unbounded, and intuitive or
analytical.
Research contribution
The principal finding of this research is that specific areas of expertise beyond that of
construction technology are essential to the successful delivery of a technical
innovation in construction. In other words, superior technical skills are a necessary,
but not a sufficient, condition for the effective delivery of a technical innovation.
Soft-skills relating to people management and networking are critical to the delivery
process, as are a high degree of economic understanding, marketing and business
planning skills. A great idea for a technical innovation is not enough in itself to
produce a delivered technical innovation. The great idea needs to be supported by
adequate investment, effective research development and testing, strong linkages with
intra-industry groups and timely delivery into the market. The successful innovators
studied in this research have all managed in one way or another to acquire this
diversity of skill-sets. This is potentially useful information for policy-makers, as
well as for those individuals seeking to improve his or her company’s innovation
performance.
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CHAPTER 1 INTRODUCTION
Chapter 1 describes the history of innovation theory and its importance to economic
performance. It reports on the relative lack of current research attention given to
small and medium enterprises (SMEs) in Australian construction. The significance
and value of the issue of improving innovation performance in construction SMEs is
explained. Finally, the chapter gives an outline of the objectives and structure of the
remainder of the thesis.
1.1 Background
Although the term ‘innovation’ is often used loosely in general discourse, there is an
extensive and specific body of literature on the topic in academic journals.
Nevertheless, as Drucker (2007) pointed out, many people and even many businesses
equate innovation with inspiration, and entrepreneurship with good luck (Drucker
2007 p.xv). This thesis will address the discipline of innovation from the perspective
of established economic and management theory rather than popular culture. Afuah
(2003) defined general technological innovation as the application of knowledge
about tools, materials, processes and techniques to problem solving. Innovation is
widely recognised as an iterative process rather than a singular event; the process
involves an extended set of activities that translate new knowledge into something of
value (Bessant and Venables 2008). In market economies, technological innovation
creates economic value by allowing firms to use their resources more efficiently, as
well as, meeting people’s needs in ways they were not met before (Shane 2008).
Technical innovation in industries like construction represents a sub-set of broader
technological change in the larger economy. As described by Slaughter (1998),
technical innovation in construction is ‘the actual use of a non-trivial change and
improvement in a product, process or system’ (Slaughter 1998, p.225). An innovation
does not have to be an invention; that is, it does not necessarily involve a detailed
design that is novel with regard to existing knowledge and practice. Incremental
innovation and innovations that cannot be closely defined as an object or process are
classified as innovation, even though instances may be difficult to identify as discrete
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events. Innovation includes patented inventions if they are successfully delivered, but
if original inventive ideas remain unrealised, they are not classified as innovations.
The scope of innovation is, therefore, considerably broader than invention in the sense
that it includes changes that are simply new to the institution developing the change,
rather than unique and new to the whole world. The term invention applies to unique
and original ideas with demonstrably practical implications. There are many reasons
why an invention may never be successfully realised in the marketplace. These may
relate to cost, competition, timeliness and its interoperability with existing systems.
The intersection between invention and innovation consists of new and unique ideas
successfully delivered in a real life context: the ‘inventive innovation’ or the
‘innovative invention’ depending on classifier emphasis. This relationship is
illustrated in Figure 1.1 below. As Bessant and Venables have explained:
“... innovation is a process − an extended set of activities that
translate new knowledge into something of value. It isn’t ... simply a
matter of a ‘Eureka!’ moment, but rather a long and painstaking
process of translating the initial idea into something useful − and
used” (Bessant and Venables 2008 p.3).
Figure 1.1 Diagrammatic relationship between innovation and invention
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The effectiveness of innovation theory as both a generator and a supporter of business
success has been noted in the wider economic literature for many decades (Tidd and
Bessant 2009). The practice of fostering innovative activity as a way of improving
business performance and maintaining growth has long been an acknowledged part of
market economics, stemming from the pioneering work of J.A. Schumpeter in the first
half of the twentieth century (Schumpeter 1934; Schumpeter 1942). Schumpeter
observed a circular flow (‘kreislauf’ in the original German) to be the underlying
pattern of economic life. A degree of constancy in this circular flow pattern is
achieved, because the action of the law of supply and demand tends toward a state of
equilibrium. Schumpeter declared that “Economic activity may have any motive,
even a spiritual one, but its meaning is always the satisfaction of wants.” (Schumpeter
1934, p.10). It is the harnessing of a combination of productive forces including
natural resources and human labour that produce economic benefit. Innovation is the
spontaneous and discontinuous change which alters the previously existing
equilibrium of circular flow. Schumpeter (1942) described this process as the “gales
of creative destruction” that supplant outdated practices and introduce new and more
efficient modes of operation. Winch (1998), wryly and more circumspectly,
described the process in residential construction, as one of “zephyrs of creative
destruction”. Whatever the perceived impact, the process must be one of continual
adjustment, because as wants are satisfied intensity of desire or ‘demand’ lessens.
The primary incentive for entrepreneurial activity and innovation is that it provides
the opportunity for participating in economic gain as a result of the disturbance of the
pre-existing equilibrium flow.
There remains some general resistance to innovation theory in some areas of industry
and commerce generally. This resistance is mainly based around industry culture,
learning behaviour and absorptive capacity (Henderson and Ruikar 2010; Morton and
Burns 2008; Walker and Peansupap 2003). Nevertheless, the manufacturing sector
has adopted the theory and practice of innovation with considerable enthusiasm over
several decades (Bessant and Grunt 1985; Nonaka and Takeuchi 1995; Tushman and
Moore 1988; Tushman and Anderson 2004). The construction industry, however, has
been relatively slow to incorporate innovation as an industry goal, despite some early
prompting in that direction by economists like Bowley (1960). This
underperformance on measures of innovation is illustrated in the Australian context
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by an Australian Bureau of Statistics Report from 2005 which produced the graph
shown as Figure 1.2 (ABS 2005). It is partly due to the perception that construction is
innately different from other industries and partly due to a continuing level of
conservatism about change initiated from outside the industry (Reichstein et al. 2005;
Winch 2003).
Figure 1.2 Proportion of businesses undertaking new goods and services innovations
(Source: ABS 8163.0 Patterns of Innovation in Australian Businesses 2005)
Nevertheless, in the last few decades, researchers such as Nam, Tatum, Slaughter and
Gann have sought to interpret innovation theory in the context of the construction
industry (Gann 1997; Gann 2001; Nam and Tatum 1992; Slaughter 1993; Tatum
1984).
1.2 Research aim and objectives
The main research aim of this thesis is to perform a systematic study of successful
construction SME innovations and the strategies adopted for their delivery, with the
intention of yielding useful lessons for other businesses wishing to improve their own
innovation performance. The research question is that will be addressed is “What are
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the factors which affect technical innovation by construction industry SMEs?”. In
addition, this thesis has the following specific objectives:
• Identify a series of possible factors which impact on the successful delivery of
a technical innovation by a construction SME;
• Prioritise those factors via a structured survey of successful SME innovators;
• Illustrate the survey outcome by descriptive case studies of successful
innovation delivery;
• Provide encouragement for interested parties such as other construction SMEs
who are considering introducing a technical innovation;
• Provide advice for government bodies, professional and industry associations
who wish to foster a culture of innovation in the construction industry;
• Indicate possible strategies for universities and other research institutions on
how they can best contribute to SME innovation.
These objectives will be addressed in this thesis by means of a systematic study of the
holistic storyline of instances of successful innovation delivery.
1.3 Significance
The intended contribution of this thesis is to address the, as yet, under-researched area
of technical innovation in Australian construction industry SMEs. In doing so, the
thesis will generate some insights into the complexity of the innovation delivery
process. As Tidd and Bessant (2009) report, innovation is important, not only for its
critical contribution to the survival of individual firms, but also for the ongoing
prosperity of national and global economies. Priority areas which have the most
impact on a successful innovation delivery will be identified in this thesis. This
knowledge is useful to the successful innovators themselves, as an affirmation of their
strategies and processes. The dissemination of such knowledge provides
encouragement for potential innovators who are able to see the pathways taken by
SME innovators in the past. It can also provide guidance for others with an interest in
improving the overall performance of the construction industry sector in the national
economy.
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1.4 Research methodology
As construction management research involves the observation of human activity, it
cannot be readily reduced to a strictly quantitative research problem. The subject of
this research process is the actions of successful innovators. It is, therefore, important
that multiple methods of data collection are used in the observation. It is also
important to ensure that the research methodology takes account of potential
strategies such innovators may use to influence the research outcome (Leiringer and
Cardellino 2008). In order to do this, a mixed method strategy involving both
quantitative and qualitative methodologies is employed. The methodological options
considered are discussed in detail in Chapter 3. Mixed methods research aims to
achieve triangulation of the research subject by addressing it from multiple
viewpoints. If convergences are detected in the findings from the different
methodological strategies, this can equate to robustness in the findings of the
research.
1.5 Structure of the thesis
This study will attempt to determine the major enabling factors that allow some
Australian SMEs in construction to generate or adopt technical innovations. Mixed
methodology techniques involving both quantitative and qualitative strands will be
used to approach the research question from differing points of view. It is contended
that an approach that mixes an anonymous statistical survey with qualitative named
case studies of specific technical innovations is likely to generate a fuller picture of
factors impacting on technical innovation delivery, than would result from either
approach by itself.
Chapter 2 of this thesis examines the research context of this study. Major
impediments to change in the industry have been identified. Factors that may have an
impact on the delivery of technical innovation are discussed in a review of the
scholarly literature on the topic.
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The case for mixed methods research in construction management is made in Chapter
3. Several methodologies that were considered are evaluated for their fitness to
answer the research question and the preferred strategies are explained.
It is considered that the choice of whether or not to adopt a technical innovation can
be considered as a classic ‘decision-making’ problem. This is especially true in small
businesses where an individual chief decision maker has to evaluate many competing
and incommensurate factors when deciding to generate or to adopt a technical
innovation. Numerous quantitative methodologies exist under the heading of Multi
Criteria Decision Making for addressing such situations and these are studied and
evaluated in Chapter 4.
The validity and relative importance of the factors identified from the literature
review was tested by a statistical survey of independently acknowledged successful
innovators in Australian construction SMEs using the identified methodology. The
survey format is reported in Chapter 5 along with an explanation of the selection
criteria for the participants.
Analysis of the survey participants’ responses comprises the topic of Chapter 6. The
collected data forms the basis of a critical evaluation of alternate strategies for
supporting innovation activity. Factor priorities are established by aggregation of the
survey data, both for the whole sample and for sub-groups within the sample.
Statistical tests were undertaken to assess the significance and the validity of the
derived priorities.
Qualitative case study examples of selected innovation delivery are described in
Chapter 7. The case studies provide accessible storylines of the innovation process in
order to qualitatively substantiate the data collected in the quantitative study. They
are descriptive and elucidatory in nature, in order to meet the research objective of
providing indicative strategies for those companies wishing to improve their
performance. In a sense, the case studies represent a triangulation of the results
gleaned from the literature review and the statistical survey.
Chapter 8 analyses convergences between the results of the quantitative survey and
the qualitative case studies. A simplified model of successful technical innovation
delivery by construction SMEs is introduced. The model represents an attempt to
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explain the essential characteristics of successful technical innovation by SME
construction companies.
Finally, Chapter 9 gives the research conclusions and recommendations of the
appropriate course of actions both for SMEs who wish to lift their innovation
performance, as well as for government bodies and industry organisations hoping to
foster an increase in innovation delivery and diffusion. Strategies have been
evaluated from the point of view of a business wishing to raise its innovation level,
but also from the perspective of industry associations, professional bodies and
government regulators who may want to actively foster innovative performance.
Potential avenues for further research which could be tested in a larger and more wide
ranging study have been suggested.
1.6 Limitations
Much of the currently published work on innovation and construction in small
businesses has come from researchers at the University of Salford in the United
Kingdom (Abbott et al. 2006; Barrett and Sexton 2006; Sexton and Barrett 2003a;
Sexton and Barrett 2003b; Sexton and Barrett 2004; Sexton et al. 2006). Their
research has noted that “Small construction firms have their own distinctive
characteristics, which are profoundly different from those of large construction firms”
(Sexton and Barrett 2003, p.623). One of the questions addressed was the external
and internal events that trigger innovation activity in the small construction firm. The
importance of owners’ attitudes, as well as the need for incremental exposure to new
systems, has been suggested as important areas for consideration. Changing client
needs and unanticipated project conditions were identified as triggers for innovation
activity in small construction firms. Other researchers from Salford have used action
learning techniques to assist construction SMEs to tackle problems and develop
solutions (Davey et al. 2004). In addition, Hari et al. (2005) have used a grounded
theory approach, as defined by Glaser and Strauss (1967), to study knowledge capture
in UK construction SMEs. In the United States, the relationship between residential
builders and technical innovation has been closely observed (Toole 1998; McCoy et
al. 2008; McCoy et al. 2009; McCoy et al. 2011).
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To date, no large, comparable body of research into small construction businesses and
innovation in Australia has been uncovered, other than some notable exceptions in the
work of Manley (2008) and Thorpe et al. (2009). As a result, this research is
necessarily explorative in nature. It examines successful instances of technical
innovation within a limited period bounded by the greater Sydney metropolitan area
and its hinterland. The sample of innovators studied may not prove to be typical of
SME innovation throughout Australia. It can only be said to represent a systematic
collection of data from a limited place and time. The suitability of the results for
broader generalisation will be subject to the outcome of future comparative studies.
1.7 Conclusion
The research presented in this thesis represents a substantial and original contribution
to the study of innovation delivery in SMEs in the Australian context. This author has
worked for several decades in small and medium-sized construction businesses in
Australia and consequently sees the possibilities and pitfalls of such businesses from
an insider’s perspective. Research aimed at acquiring a better understanding of the
factors that encourage small construction firms to innovate can be anticipated to have
economic, environmental and social benefits.
Innovation theory has been broadly acknowledged as both a generator and a supporter
of industry performance over many years. Encouraging the rate of innovative activity
in order to improve profitability and quality of output has been an axiom of market
economics since the previously mentioned work of Schumpeter (Schumpeter 1934;
Schumpeter 1942). The manufacturing sector in most market-based economies has
wholly adopted the theory and process of innovation. The construction industry,
however, has a tendency to resist economic theory generated in other areas and often
sees itself as a unique case which cannot be appropriately compared to other sectors
(Reichstein et al. 2005; Winch 2003). This is partly due to the fragmented, combative
and project-based nature of the industry, but also to a strong innate tendency to avoid
unnecessary change. Several authors have addressed the issue of innovation in
construction internationally (Gann 1997; Gann 2001; Nam and Tatum 1992; Nam and
Tatum 1997; Slaughter 1993; Slaughter 1998; Slaughter 2000; Tatum 1984; Tatum
1987). In Australia, this work has been taken up by several researchers at the
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Australian Cooperative Research Centre for Construction Innovation (CRCCI);
notably Hampson, Sidwell, Manley and Thorpe (Hampson and Tatum 1997; Manley
and McFallan 2006; Manley 2008; Sidwell et al. 2001; Thorpe et al. 2009; Walker et
al. 2003).
As a result, there exists a significant body of scholarly literature concerning matters
affecting the theory and practice of construction innovation. This existing body of
work is the subject of the literature review in Chapter 2 of this thesis. With some
notable exceptions, this literature has tended to concentrate its study on large
construction projects and large construction enterprises. Relatively little attention has
been paid to small and medium-sized construction companies, despite this sector
forming the greater part of the industry in terms of employment and a significant
component in terms of market value. It is surprising, given both the significance of
the industry and the high percentage of SMEs that it contains, that there has not been
a great deal of research into the factors that enable construction SMEs to survive,
prosper and grow into successful and innovative enterprises. An extensive review of
papers on construction innovation covering the past two decades in scholarly journals
has identified more than 500 refereed journal articles dealing with innovation in
construction. Only twelve of these have dealt specifically with small business
innovation. It is this identified gap in the transfer of the value of innovation theory to
the Small and Medium Enterprise in construction that is to be addressed by this
research.
While the history of every company which achieves successful adoption and delivery
of an innovative practice is clearly different in detail, it is speculated that there are
some features which such firms have in common. The identification of these
common features is useful to the firm itself as a validation of their own choices and
practices but, more importantly, it can provide some suggestions for other companies
wishing to lift their performance. Government and industry bodies may also benefit
from the knowledge of the factors that are likely to increase innovation activity, so
that they are able to foster ‘innovation friendly’ practices throughout the SME sector.
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CHAPTER 2 THE RESEARCH CONTEXT
Chapter 2 examines the context of the construction industry with respect to innovation
theory. It defines the terms of the study and discusses existing impediments to
innovation. Factors that are likely to be significant in the delivery of technical
innovation are identified from a literature review and are grouped in clusters of
potential relationships.
2.1 Construction industry culture and innovation
A business strategy focussing on innovation and continual improvement has long
been identified as an effective means of ensuring ongoing financial success for
enterprises operating in a market economy (Schumpeter 1934; Schumpeter 1942;
Tushman and Moore 1988; Utterback 1994; Audretsch 1995; Keen 1997; Baumol
2002; Tushman and Anderson 2004; Dodgson et al. 2005; Fagerberg et al. 2005; Tidd
et al. 2005; Chesborough et al. 2006; Isaksen and Tidd 2006; Bessant and Tidd 2007;
Drucker 2007; Malerba and Brusoni 2007; Dodgson et al. 2008; Shane 2008;
Audretsch et al. 2009; Malerba and Vonortas 2009; Weick 2009). Increasingly,
openness to innovation is also associated with improved environmental and social
performance in many sectors of the economy in the worldwide context (Fussler and
James 1996; Elkington 1997; Johansson and Magnusson 1998; Tushman 2004;
Elkington and Hartigan 2008; Hubbard 2009).
However some sectors, such as the construction industry, are widely reported to have
mainly failed the challenge to adopt new attitudes and modes of operation and are
said to remain largely ‘low tech’, traditional and craft-based (Pavitt 1984; Nam and
Tatum 1989; Reichstein et al. 2008; Sundqvist 2004). Over a long period of time, the
construction industry has been broadly criticised as slow to absorb both new
management practices and new technologies (Bowley 1966; Latham 1994; Egan
1998; Fairclough 2002; Woudhuysen and Abley 2004). Indeed, among the general
public, there is an often-reported perception of the construction industry as being
‘dirty, dodgy and dangerous’. In other words, it can sometimes be regarded as rife
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with corruption and given to doubtful safety practices which lead to injury and loss of
life on project sites. In the Australian context, this belief was widely voiced in
submissions to the Cole Royal Commission into the Building and Construction
Industry (Cole 2003). The Royal Commissioner, in his “Summary of Findings and
Recommendations” listed as his first report outcome, that there was “an urgent need
for structural and cultural reform” in the construction industry (Cole 2003, p.3). In
particular, the position of small contractors, sub-contractors and independent workers
was identified as highly vulnerable to disruption and intimidation because of their
dependence on continuous and undelayed work to maintain essential cash flow and
liquidity. Cole also identified “an unwillingness within industry leadership to
recognise the long term advantages of structural and cultural change, accepting
instead a short term project driven profit process” (Cole 2003, p.13). In this context,
the industry culture is widely perceived as belligerent, fractious, excessively
competitive and even inwardly destructive. Risk shifting and blame shifting are
reportedly commonplace and the smaller and more vulnerable end of the industry can
be forced to carry the majority of the risk associated with introducing any new or
improved practice. Significantly, the current contractual and governance system
tends to assume this background environment of disputation, intimidation, lack of
openness and barriers to information access. The available remedies for the resulting
disputes tend to be expensive and time-consuming legal ones and unfortunately
smaller businesses often lack the economic capacity to defend their interests in the
courts. As a result, change from the bottom-up may be stifled and a large part of the
industry is deflected from the prospect of improving their individual situations
through the introduction of an innovation strategy. Of course, the problems
mentioned here have by no means universal coverage among construction companies.
It is acknowledged that many firms have management structures in place to avoid
such difficulties. Nevertheless, Cole (2003) did find significant and widespread
cultural impediments to positive change in the construction industry.
2.1.1 Is construction unique?
Some degree of explanation for the perceived dearth of construction innovation is a
function of the unique structure of the industry and the way its boundaries are
currently defined. Nam and Tatum (1988) have described how the products of
construction differ in scope, complexity, costliness, durability and in potential for
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social consequences from manufactured products. Winch (2003), for example, has
pointed out that the motor vehicle manufacturing industry is considered to be separate
from the car repair industry for statistical purposes and consequently vehicle
manufacturing can demonstrate a higher level of innovation as it is not held back by
the more mundane processes of maintenance and repair. In the case of the
construction industry, however, repair and maintenance functions are often counted as
part of the same industry leading to a lower overall industry rate of delivered
innovation. Certainly, porous boundaries exist between the construction industry and
related areas of engineering, product manufacturing, building maintenance,
demolition, project management and facilities management. As a result, Winch sees
the ‘Complex Product Systems’ model as a more appropriate description of the
industry’s situation than the classical perspective of industry development (Winch
1998, p.269). The construction industry is made up of many and diverse
interconnecting elements. It often encompasses complicated hierarchies, non-linear
progressions and a high degree of user involvement in the overall process. In this
sense, construction is not directly comparable to any other industry, although it has
features in common with several other project-based industries.
Bresnen and Marshall (2001) have stated that the question as to whether construction
is essentially different in nature from other industries is probably unanswerable and
should be avoided in favour of analysis of how knowledge and ideas are diffused in
practice in the industry. Other authors have pointed out difficulties with the direct
transfer of management ideas from manufacturing to construction due to the
established practice patterns of the industry (Cheung et al. 2003; Gann 2001; Jaafari
1996; Jørgensen and Emmitt 2008; Loosemore and Tan 2000; Santos and Powell
2001). The project-based structure of the industry means that groupings of discrete
businesses temporarily coalesce and then separate around the delivery of relatively
short term projects. Although some continuity is provided by the tendency to work
with groups where there is some connection from a previous project, the temporary
nature of the relationship can lead to suspicion, or at least caution, about the sharing
of information and experience. This is not an atmosphere conducive to the diffusion
of successful innovations. This is a problem not only for the industry itself, but also
for the wider economy because of the importance of construction as a driver of
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economic performance in most national economies. As will be demonstrated, this is
certainly true in Australia.
2.1.2 Importance of the construction industry
Although the construction industry continues to form a significant slice of national
economies throughout the developed and the developing world, definitions and
estimates can vary widely as to the extent of this economic importance. Construction
sector contribution to national Gross Domestic Product (GDP), as reported in a large
study by Walsh et al. (2005), varies between 3.5% and 24.7%, with a mean
contribution of 10.7%. The financial value is not the full extent of the influence,
however, as construction has a significant impact on the socio-economic development
process and is able to stimulate growth in other sectors because of its complex and
extensive linkages with other parts of the economy. In the Australian context, Royal
Commissioner Cole noted that the significance of the industry is much greater than its
strict economic definition because “Every Australian business and every Australian
citizen use the built environment” (Cole 2003, p.3). This relationship was clearly
recognised by the Australian government under former Prime Minister Kevin Rudd
(2007-2010). It formed the basis of the economic stimulus package introduced in
2009 to ameliorate the effects of the global financial crisis.
The nature of the industry is also evolving and in the developed world, there is less
emphasis on new and ‘green-field’ construction and more emphasis on upgrading,
renewal, achieving sustainability and delivering complex projects. A longitudinal
global study by Pietroforte and Gregori (2003) observed a decline in the importance
of the overall construction sector over the period from the late 1960s to the 1990s in
developed countries. At the same time, however, a rise was observed in the
significance of renovation and refurbishment and an increase in the importance of
services as opposed to manufacturing inputs to construction. The observed decline
may largely be due to other sectors making significant gains in their productivity,
while construction lagged behind in structural reorganisation. In addition to this,
particularly in the developed world, the character of the construction industry is
changing, with less emphasis on new construction and a rise in the more complex
system projects. Construction remains a crucial sector of the global economy, but the
increasing diversity of activity within the sector means that its character is more
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varied than in the past. The need for innovation to maintain the industry’s status as an
economic driver is therefore all the more pressing.
Consequently, the debate over how to maintain and improve industry performance has
been the subject of widespread discussion among industry groups themselves, as well
as government policy makers and academic researchers. Creating an atmosphere
conducive to continuous innovation is seen as important, both for individual
organisations and for the industry as a whole (Hampson and Manley 2001; Dainty et
al. 2007). Gann (2003) has described a process of intensification that is occurring as
construction firms strive to maintain profitability, while addressing newly important
priorities such as the environmental and social consequences of action in the built
environment. This is evidenced by the increasing interest in the theory and practice of
innovation among governments, industry bodies and the research community (Abbott
and Allen 2005; Bossink 2007; Keast and Hampson 2007; Lim et al. 2010; Manley
2006; Manley 2008; Manley and McFallan 2006; Manseau and Seaden 2001; Miozzo
and Dewick 2004; Pellicer et al. 2010; Stewart and Fenn 2006; Taylor and Levitt
2008; Yin 2006). The translation of this interest into widespread practice is
problematic because of the inertia created by current industry structure and because of
the qualities which have been widely seen to characterise standard industry practice
for many years; in other words, informal industry culture and structure.
2.1.3 The need for change
In a ground-breaking study of the British construction industry based on data gathered
over the preceding eighty year period, Bowley (1966) identified five fundamental
problems affecting the industry’s performance:
• Low-level of competence of prospective building owners to make an
informed choice between competing contractors;
• Lack of mechanisms to foster innovative solutions;
• Absence of design and construction integration;
• Lack of economic input into design decision making;
• Poor quality of production and low efficiency levels in the housing sector.
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Many of these factors have been recognised to have much broader coverage than the
UK building industry. Internationally, the industry has changed a great deal in the
intervening period since the identification and formulation of these issues; however,
some difficulties have proved less easily managed than others. In the forty years
since Bowley’s insights, many public sector and other repeat clients have specifically
sought to improve their technical competence when it comes to making evaluative
judgements about construction procurement (Manley 2006). Nevertheless, lack of
capacity to evaluate contractor options remains a problem for first time or one-off
clients. The rise of ‘Design and Construct’ and ‘Package Deal’ procurement and of
the input to the process from the quantity surveying profession have at least partly
addressed two other of Bowley’s areas of concern. Quality of production, though an
ongoing issue, has been addressed via both regulation and through quality assurance
perspectives and management strategies. The establishment of mechanisms to foster
innovative solutions, however, has proved a more intractable problem. There will
likely always be a tension between regulation and innovation. This tension is centred
on risk and responsibility. The entrenched avoidance of risk has proven to be a
significant long term barrier to the development of a construction industry culture
which promotes and embraces innovation.
Some four decades after Bowley, an extensive international study using grounded
theory, Fox and Skitmore (2007) found eight key factors which are associated with
construction industry development:
• Industry-led better practice and culture;
• Financial resources and investor confidence;
• Human skills and a culture of transparency;
• Government policies and strategies supporting construction business;
• Research and development for construction;
• Self-reliant construction culture;
• Institutional support;
• Supportive attitudes from aid agencies.
The need for cultural change is emphasised along with the provision of appropriate
support structures to encourage and manage change. The focus of interest has shifted
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towards the management of knowledge and the delivery of appropriate human
resource allocation, along with the prudential management of financial resources.
The importance of education and a process of questioning of assumptions have been
identified as necessary conditions for a change in industry culture. Kumaraswamy et
al. (2002) stressed the importance of this change process being internally driven by
the industry, with emphasis on value-oriented procurement and collaborative working
arrangements. In particular, there is a need to persuade the industry of the advantages
of information technology for their productivity (Betts 1999; Peansupap and Walker
2006). Stewart et al. (2004) identified continuing barriers to the adoption of
information technology in the Australian construction industry, which are only likely
to be overcome by strong leadership and the example of the major industry
participants. El-Ghandour and Al-Hussein (2004) made similar findings in the North
American context and emphasised the value of integration between different IT tools.
A study by O’Connor and Yang (2004) investigated the extent to which the adoption
of new technologies contributes to project performance. Both information sharing
and automation of processes were studied. Scheduling benefits were noted to be more
closely associated with technology usage than were cost benefits. In an extensive
follow-up study of capital facility projects in Taiwan, Yang (2007) found a strong link
between overall project performance and electronic information transfer and storage.
With the increasing availability of IT tools in construction, this result indicates that
those who do not adapt to this situation may find that they are increasingly outbid by
information technology users.
Advanced business practices have also been shown to improve performance for those
construction industry firms who elect to adopt them. The wider management
literature has established the utility of such practices for business performance (Tidd
et al. 2005). The industry lead-users of strategic business plans, quality certification,
incentives, computerised record keeping, online marketing, multimedia
communication and relationship contracting have seen significant benefits to their
market share and overall profitability (Goulding and Alshawi 2002; Kululanga et al.
2001; Manley and Marceau 2001).
Despite the widespread evidence for the need to reform both industry culture and
industry practice, there remains considerable resistance to change in many areas. The
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causes of this resistance are both structural and resource-based. Careful analysis of
the factors resisting change is necessary if industry performance is to be significantly
improved.
2.2 Resistance to change
The academic literature on factors which result in resistance to change in the
construction industry is extensive. In order to set the context for this thesis, the
academic literature which deals with problems in the construction industry was
studied to identify known causes of industry underperformance. Two kinds of factors
were widely mentioned; resource-based factors and structural factors. Resource-
based factors centre on the lack of appropriate skills and financial backing to apply to
complex construction projects, while structural factors deal with the innate nature of
the industry and its context. For the purposes of this thesis, resource-based factors
which have been identified as contributors include:
• The proliferation of many very small businesses who have difficulty
surviving let alone growing and investing in improvements (Abbott et al.
2006; Dainty et al. 2007; Koksal and Arditi 2002; Love and Irani 2004;
Sexton and Barrett 2003b; Winch 2000);
• Insecurity of much employment in the industry (Campbell 1996; Walker
et al. 2001; Green and May 2003; Forde et al. 2009);
• The tacit and individualised nature of much of industry experience, skills
and knowledge (Fernie et al. 2003; Hari et al. 2005; Larsen and Ballal
2005; Love et al. 2000; Love et al. 2005; Tombesi 2006; Vakola and
Rezgui 2000);
• Lack of expertise in, and value placed on, human resource management
(Bossink 2004; Druker et al. 1996; Kangari and Miyatake 1997; Keegan
and Turner 2002; Loosemore et al. 2003; Searle and Ball 2003);
• Contractual risk shifting towards those who can least afford to bear the
cost (Hinze 1994; Langford et al. 2000; Loosemore 1999; Loosemore
2005; Zaghloul and Hartman 2003).
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Structural factors which have been identified as impediments to change and
innovation in the construction include:
• Its temporary project-based nature (Dubois and Gadde 2002; Towill
2003; Reichstein et al. 2008);
• Procurement systems which stress lowest price rather than best value
(Wong et al. 2000; Salter and Torbett 2003; Turner 2004; Williamson et
al. 2004);
• The complexity and lack of integration in existing industry supply chains
(Dainty et al. 2001; London and Kenley 2001; Love et al. 2004; Briscoe
et al. 2004; Kumaraswamy et al. 2004);
• Resistance to standardisation and modularisation because of the inherent
diversity of industry participants (Fox et al. 2001; Gibb 2001; Gibb and
Isack 2003; Blismas et al. 2006; Blismas and Wakefield 2009);
• Self-perceptions of the industry’s nature which limit both top-down and
bottom-up innovation (Koskela and Vrijhoef 2001).
Each of these preceding ten factors will be discussed in detail below.
2.2.1 Many very small businesses and independent workers
Koksal and Arditi (2002) in an extensive study of construction business failure data in
the USA, cite insufficient profits, heavy operating expenses and burdensome
institutional debt as the most significant factors affecting business survival. While
this might seem an obvious conclusion which could apply to any business in any
industry, it is important to note that the proliferation of such undercapitalised and
overstretched businesses is a feature of the construction industry in most parts of the
world. Such firms have difficulty achieving a survival mode and are in a poor
position to innovate.
Abbott et al. (2006) stressed the importance of firm size in the innovation process and
noted that, although it is possible for small firms to manage and drive change, they do
so in circumstances which differ widely from those of large companies. Small firms
need to gradually develop an innovation capability which enables them to become
more adventurous in their change management processes.
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In recounting the history of the construction industry in the UK, Winch (2000a) noted
that continued strong reliance by large and medium firms on self-organising groups of
workers for actual production means that many construction organisations can fail to
develop and maintain their core competencies. The historic shift from an
employer/employee relationship to a contractor/sub-contractor relationship has
resulted in a strict focus on cost, rather than on sensible allocation of resources to
allow continuity of employment and maintain a skills base. A detailed discussion of
this matter is outside the scope of this thesis, however, it remains an important part of
the day-to-day context in which small and medium-sized construction firms exist.
2.2.2 Insecurity of employment
The proliferation of small business sub-contractors has also increased overall
insecurity of employment in an industry that was already characterised by unstable
employment practices (Green and May 2003). Walker et al. (2001) have reported on
the traditional adversarial approach to industrial relations, which was common until
recently on most Australian construction projects. Such adversarial attitudes and time
lost due to disputes can be correlated with the perception of insecurity experienced by
those whose future employment is uncertain and who, therefore, seek to maximise
their current returns at the expense of project quality and value (Campbell 1996).
This ‘everyone for himself’ attitude is a major impediment to a more co-operative
industry culture and a more innovative industry. Interestingly, Forde (2009) has
noted a developing tendency for a blurring of the line between employee and sub-
contractor which may result in attitudinal change.
2.2.3 Tacit nature of industry knowledge
A further factor which tends to exasperate the deep-seated adversariality in the
construction industry is the fact that much industry knowledge and skill is tacit,
uncodified and resides in the minds of individuals who have acquired their knowledge
through experience over time and on diverse projects (Loosemore et al. 2003; Love et
al. 2005; Vakola and Rezgui 2000). In addition, the rationale for decisions is often
not written down or recorded in any way, making it difficult for the organisation as
opposed to the individual to learn from project experience (Tombesi 2006).
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This highly personalised nature of construction knowledge means that the ability to
make sensible decisions is very difficult to teach or transfer to others (Fernie et al.
2003b; Thorpe et al. 2009). Promising new technologies may be rejected simply
because they challenge existing norms and standard practice (Zhang and Yang 2006).
The socialisation process is often given scant resourcing in construction firms with a
resultant breakdown in the transfer of knowledge between different project teams and
employee generations. Hari et al. (2005) looked specifically at this transfer process in
small and medium construction enterprises and found a specific lack of awareness of
the issues of knowledge transfer within a firm. When these issues were managed
well, it tended to be because of the vision and flair of the organisation’s owners rather
than through any systematic process (Hari et al. 2005, p.555). Consequently, the
greater part of the industry, especially the small firms, has no effective strategy for
knowledge transfer from project experience. Szulanski (1996) described such issues
through the concept of ‘internal stickiness’ and found that problems with knowledge
transfer were often related to the recipient’s lack of absorptive capacity or to
relational difficulties between the knowledge source and the recipient.
2.2.4 Lack of human resource management expertise
Construction firms tend to be led by people with technical expertise and often there is
an associated lack of human resource management skills (Druker et al. 1996).
Construction industry education has also tended to neglect the softer human skills in
favour of technical capacities. Kangari and Miyatake (1997) point out that in contrast
to western countries, management culture in Japan is quite proactive in incorporating
‘people skills’ in technical enterprise management. Collaborative attitudes,
systematic information gathering and a reliance on reputation are regarded as essential
components of a management structure which is friendly to innovation. Bossink
(2004) identifies the manager’s leadership style as an important issue in the
progression of innovative ideas in the Dutch construction industry. He reports that
training for such managers has tended to avoid issues of human resources in favour of
technical skills, resulting in a lack of expertise in many parts of the industry and the
inability to benefit from newer management ideas and practices. Similarly
Tzortzopoulos and Sexton (2007), in researching case studies, found that a ‘learning’
approach rather than managerial ‘command and control’ structure was more likely to
favour improved construction industry performance.
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2.2.5 Risk shifting
Similarly, lack of awareness of more progressive management theory has led many
parts of the industry to persist with adversarial risk shifting and blame shifting
strategies (Loosemore 1999). The practice of shifting risk down the contractual chain
to the smaller players was identified by Hinze in the early nineties (Hinze 1994).
Langford et al. (2000) noted the adverse impact this has on safety on construction
sites, as it can leave responsibility for safety with those with the least resources to
manage the problem. The pull of productivity bonuses and other incentives can lead
sub-contractors to compromise on safety issues if head contractor managers do not
intervene to prevent this situation. This represents a serious impediment to
progressive change. Kay (2010) has asserted that potential risk and uncertainty have
acted together to stifle much needed innovation in the construction industry.
A study undertaken in the Canadian construction industry demonstrated that lack of
trust between the contracting groups on projects can lead to a hard line reliance on the
letter of the contractual law to apportion blame, rather than to solve the problem
(Zaghloul and Hartman 2003). This lack of trust was shown to be ultimately
counterproductive for all the parties concerned. Nevertheless, it remains the common
context of much of industry interaction.
2.2.6 Project-based nature of the industry
Construction activity is essentially carried out by teams who come together for short
term projects. Linkages between companies are often temporary and unstable.
Dubois and Gadde (2002) have described the difficulties associated with a ‘loosely
coupled’ system as such a project-based industry inevitably is. The strong project
focus inherent in such an industry structure makes coordination with those outside the
project difficult and even pointless (Dubois and Gadde 2002, p.629). Seymour and
Rooke (1995) noted that stereotypes abound in the construction industry because they
facilitate transitory relationships. However, these stereotypes tend to impede the
formation of the longer-lasting and personalised relationships that characterise
effective working in teams. Small firms particularly can suffer from a lack of
strategic alignments which broaden their resource base (Hua 2007). Unlike some
other project-based endeavours like, for example, the movie industry, the construction
industry produces artefacts which are usually very long-lived and continue to impact
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on the environment and on society for many years after their production. This
combination of short-lived project teams with long-lived effects is one of the essential
problems for the delivery of quality project outcomes. Towill (2003) has stated that a
focus on implementation, not just on the early phases of process mapping and process
redesign, is necessary if construction is to gain the benefits that an integrated industry
like manufacturing currently enjoys.
2.2.7 Lowest price procurement
In addition to the temporary nature of the industry structure, construction also suffers
from an overdependence on cost, as opposed to value, as the means of determining
the distribution of work. It has been demonstrated that a multi-criteria contractor
selection process has many advantages over simple lowest cost selection (Wong et al.
2000; Williamson et al. 2004). However, at times, the experience, skill-base, safety
record and appropriate capitalisation of bidders can tend to be ignored in favour of a
low tender price from a less reputable firm that may be ultimately undeliverable.
Along with this attitude is a short-sighted tendency to under resource the design time
allocation for a project in order to cut costs (Salter and Torbert 2003). As a result, the
various design alternatives may not be fully explored because of the need to restrict
design costs and the end result may not be the ‘best for project’ solution.
Turner (2004) pointed out that the information available on the parameters of a
construction project is inevitably incomplete at the time a contract is awarded. In
these circumstances, a reliance on tender price as the only measure of selection is
particularly problematic. The broader assessment approach taken by some
relationship procurement methods is likely to be much more effective in the long term
but, as previously noted, these methods are currently mostly restricted to the large
national and multi-national business end of the construction industry.
2.2.8 Supply chain complexity
Since the Egan Report (1998) in the UK pointed out the need to integrate the project
delivery process, there has been a strong move towards such supply chain integration
worldwide. Dainty et al. (2001), however, have shown that sub-contractors are often
sceptical of the value of supply chain integration, seeing it as a way of limiting their
scope for profit and their potential for independent operation. As a result, there has
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been very little uptake by the small and medium-sized construction firms of the more
collaborative forms of project delivery.
London and Kenley (2001) have described the tension between the integration of the
construction supply chain and the nature of a project-based industry. It is clear that
theories developed in the context of the manufacturing industry may need some
significant adjustment in the context of the more complex and diversified construction
industry. The nature and extent of competition, as well as the power relationships
between firms of different sizes, can be important barriers to the efficiencies of closer
integration.
As Briscoe et al. (2004) have pointed out, clients can be potential drivers of industry
performance improvement by supporting the appropriate integration of the supply
chain through their procurement policies. Love et al. (2004) have supported this
notion and stressed the importance of communication, co-operation and learning
within the project team and incorporation of design within the delivery process rather
than separate from it. Collaborative decision making within the supply chain received
further support from Kumaraswamy et al. (2004b). ‘Acceptable rules of engagement’
need to be set out in order for industry groupings to negotiate information-sharing,
risk allocation and reward-sharing in an industry that has traditionally relied on
competition rather than co-operation.
2.2.9 Resistance to standardisation
There are many possible benefits from standardisation of building products and these
have been known for many years. Nevertheless, the structure of the industry tends to
resist pre-assembly, pre-fabrication and modularisation of components (Gibb 2001;
Gibb and Isack 2003). A new component has to win acceptance, not only from the
owner or ultimate purchaser, but also from the variety of consultants, contractors and
tradespeople who will need to integrate the new component into their own operations.
Some benefit needs to accrue to each part of the delivery chain or the change is likely
to be resisted (Blismas et al. 2006; Blismas and Wakefield 2009).
Although construction has tended to be a bespoke industry because of its scale of
operation and the complexity of its inputs, there is an increasing place for
standardised and modularised buildings and the economies they produce. This is
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particularly true of standardised components for onsite fabrication (Fox et al. 2001).
Input from the builder at the design stage is essential if such standardised components
are to achieve widespread acceptance. In the field of manufacturing, user input for
products in heterogeneous markets is being encouraged (Von Hippel and Katz 2002).
This move may well have some relevance for the construction industry which has a
clear need to balance standardisation savings with customised performance.
2.2.10 Industry self-perception – the theory of construction
Finally, Koskela and Vrijhoef (2001) suggest that the most fundamental barrier to
improved performance in the construction industry is the industry’s own self-
perception. The current accepted theoretical model of the industry is one of
‘transformation’ where the inherent uncertainty and interdependence of operations are
ignored. Top-down changes often fail because of the absence of feedback
mechanisms from site-based workers to design originators, or because the strong
emphasis on process limits the possibility for change. Bottom-up changes are limited
by the inability of the individual to comprehend all aspects of the problem given the
limited access they have to a whole project perspective. There is also structural
resistance to ideas that come from areas other than management. Koskela (2006)
called for a debate on an appropriate theory of construction that will aid in achieving
the efficiencies already gained by the manufacturing sector and produce a ‘Lean
construction’ equivalent of Toyota’s ‘Lean production’ system. It may be that this
will prove to be a helpful avenue, but by no means all researchers agree with the
proposition. Green (1999) noted that the Lean Production system is not without its
critics, in the manufacturing sector where it originated. Furthermore, there are
potential adverse consequences, if it is accepted without a careful, balanced appraisal
of its suitability in the construction industry context (Green 2002; Green et al. 2008a).
Green et al. (2008b) called for a complex understanding of human actions and the
construction industry context in which they occur. Winch (2006) also stressed the
need for further development of the concepts involved, particularly, in terms of a
broader definition of the concept of ‘value’. Consequently, a widely accepted theory
of production in construction is still far from being established.
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Each of the preceding ten factors amounts to a barrier to change to a greater or lesser
extent. Construction industry culture produces a level of inertia which discourages
the development of new solutions to community problems because of the associated
risk. The competitive and adversarial industry structure exacerbates the problem.
Working together, industry culture and industry structure combine to produce an
unfriendly atmosphere towards the fostering of innovation and continual
improvement. These circumstances are not restricted to the construction industry;
however, a determined resistance to change does appear to characterise some parts of
the industry. The situation is not entirely negative, however, as recent decades have
seen many genuine efforts at reform by individual firms and sector groupings. There
remain many areas where change has not taken root. The case, therefore, needs to be
made that the encouragement of innovative practice will benefit all sections of the
industry and improve the outcomes for those who work in the industry, as well as
those who use its products.
2.3 Theories of invention and innovation
At this point, it may be useful to describe a brief history of the theories of innovation
and invention over the past two hundred years. This will assist in understanding
where the issue of technical innovation in construction fits into the much larger
picture of the theoretical basis for the development and delivery of inventions into the
marketplace as innovations. These matters have been carefully explained in a report
by Kaiserfledt (2006). In a thoughtful discussion of “how new stuff comes about”,
Kaiserfledt (2006, p.2) makes it clear that many researchers in the area stress the
difference between ‘invention’ and ‘innovation’. Innovation is generally
distinguished by the successful delivery to the market of a new idea (Tidd et al.
2005). In this sense, invention usually precedes innovation. Many inventions may be
generated, but never successfully make the transition to the marketplace. Despite this,
inventions are a necessary precondition for technical innovation and there are grey
areas in definition between innovation and invention (Baumol 2002). Kaiserfledt
(2006) presents a taxonomy of theories of invention as depicted in Figure 2.1.
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Figure 2.1 Taxonomy of theories of invention (Based on Kaiserfledt 2006 p.6)
According to this explanation, Schumpeter’s theory is located in the top right-hand
quadrant of the invention theory spectrum, as it stresses the importance of the
individual entrepreneur and his or her ability to bring together diverse resources to
derive advantage in the marketplace (Schumpeter 1934). Neo-classical theories of the
economy (mainstream economics) by contrast stress the social environment as
represented by market forces before the influence of the individual and problem
solving before access to resources (Weintraub 2002). Neo-classical theories are
therefore located in the lower left hand quadrant. Evolutionary models are placed in
the central upper half of the range, because they equally stress both problems and
resources (Nelson and Winter 1982). Schumpeter (1942) saw the ‘entrepreneur’ or
successful businessperson as the personification of innovation and gave support to the
belief that it is large companies that drive innovation, because they have acquired the
resources to do so. Under the classical Schumpeterian perspective, the inventor of a
technical innovation is unlikely to be the person who will successfully deliver the
innovation to market (Hagedoorn 1996). Similarly, classical Schumpeterian
economics sees small businesses as unlikely innovators because of their lack of
resources. Other economists have countered this argument and demonstrated that
small businesses in many areas can indeed be highly innovative (Acs and Audretsch
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1990; Acs 1999). This thesis will investigate contrary examples to the classical
Schumpeterian theory. It will deal with episodes where construction industry SMEs
have successfully managed both to generate and deliver a building product or building
process improvement. As explained by Bessant and Tidd (2007), innovation delivery
has three stages:
• Generating new ideas;
• Selecting the useful and practical ones;
• Implementing them.
This thesis considers all three stages, but the emphasis is on the third stage - that of
implementation or delivery.
2.3.1 The significance of the individual inventor/innovator
The role of the individual inventor in the history of technological development has
been given particular research attention. Bijker (1995) describes how an unusual
combination of knowledge in a specific field often gives birth to a radical innovation
in a different field. A seminal example that is given is the Wright Brother’s
knowledge of bicycle mechanics enabling them to solve the problems of steering
aeroplanes. A generalisation of this idea is that creative problem solving can occur
when there is interaction between individuals with different knowledge sets (Freeman
and Golden 1997). In the second half of the 19th century, Thomas Edison and his
associates effectively invented the ‘Scientific Research Centre’ based on this principle
(Altshuller 1984). Edison established teams or workshops which broke down
technical problems into a series of tasks and each workshop simultaneously tested
many variants of particular solutions. This is the origin of the Scientific Research
Institute as it is known today. It has proved to be a very effective way of solving
specific technical problems, but it is clearly an option not available to smaller
businesses with their limited resource base. Such businesses must employ other
strategies if they wish to participate in the benefits of innovation.
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2.3.2 The significance of the entrepreneur
Small business managers need to be able to gather together the knowledge of many
participants via networking both within and outside of their industry group. Nobel
Prize winner K.J. Arrow referred to this as ‘social knowledge’ and saw it as essential
to the innovation delivery process (Arrow 1994). Inventors may themselves become
entrepreneurs, or they may form associations with sympathetic entrepreneurs. In
either case, an understanding of ‘entrepreneurship’ is reported as essential to the
successful delivery of significant innovation (Drucker 2007; Audretsch et al. 2009;
Acs et al. 2009). Entrepreneurial activity is centred round the identification and
exploitation of opportunity. Shane (2003) defines entrepreneurship as activity that
involves the discovery, evaluation and exploitation of opportunities to introduce new
goods and services by organising efforts in ways not previously achieved. This thesis
will concentrate on SME construction firms led by individuals who have had success
in addressing this challenge.
2.3.3 Technology leadership
Nam and Tatum (1992) promoted the idea that a ‘proactive technology leadership’
strategy was both feasible and desirable in the construction industry. The industry did
not have to be exclusively subject to ‘demand side pull’ factors initiated by
clients/owners, but could actively develop its own technological solutions. In a
seminal study of ten innovative projects, Nam and Tatum (1992) demonstrated that
some owners were quite willing to accept innovative solutions to problems that
develop on site (called the ‘Problem needs solution model’) and some were also open
to solutions proposed by contractors as a result of their previous technical experience
(described as the ‘Technology guides problem model’). In other words, it was shown
not to be the case that owner’s specifications or the demand side strictly controlled the
outcome in construction. Rather, the contractor or the supply side could significantly
influence the success of the project outcome by the application of their technical
expertise in developing new technological solutions. Nam and Tatum’s findings were
in contrast to the work of innovation theorist von Hippel in the manufacturing sector,
where end-users were shown to clearly dominate the innovation process (von Hippel
1976; von Hippel 1988). As a result, Nam and Tatum exhorted the industry to
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proactively pursue innovation as a goal which supports better practice rather than
simply a reactive response to problems in project delivery.
2.3.4 Innovation funding
The difficulty of financing innovation has been addressed in the broader economic
context stemming from Schumpeter (1942) and laid out by Arrow (1962). It can be
difficult for smaller companies to obtain external financing because of the gap
between the rate of return and the cost of capital (Hall 2008). Hall concludes that
government policy intervention is usually required in this area. The question of how
best to fund the research needed to develop innovations that result in improved
quality, profitability and competitiveness in construction was directly addressed by
Gann (1997). Gann described the traditional linear model of innovation, where
scientific research generates ideas which are later developed in an applied context by
non-scientists resulting in new products and processes that generate economic growth
(Gann 1997, p.258). This model, however, does not fit well with industries like
construction that have only a slight and passing relationship with the classical
scientific method. It is reported that in such industries, up to 90% of innovations arise
from the adaptation of pre-existing technology and not from academic science or
abstract research. The term ‘research’ is not, however, restricted to theoretical
research, as it also incorporates strategic research, applied research and experimental
development.
In project-based industries like construction, where comparatively little formal
Research and Development (R&D) is performed, there is nevertheless a need to adapt
and appropriate the findings of R&D undertaken by component manufacturers and by
other industries. The particular expertise of builders is called upon both to integrate
ideas from elsewhere and to manage compliance with the regulatory requirements
under which they operate. Gann (1997) reports that builders make many small, ad
hoc changes in the delivery of projects and often these changes are critical to the
success of the project outcome and its budget or schedule. Large changes in
materials, components or equipment tend to come from other parts of the supply
chain, specifically component manufacturers and design consultants. Consequently,
funding for research should be a joint responsibility of both government agencies in
the interests of the public good, as well as private industry in the interests of
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economic growth and development. This thesis focuses on innovation and
construction SMEs. Without some level of external support, SMEs in particular find
it difficult to generate or adopt innovative practices.
2.4 Innovation definitions and statistics
As governments contribute either directly or indirectly (through tax subsidies) to
research and innovation, they necessarily feel the need to collect standardised
statistical information on the effectiveness of their investments. This has been the
impetus behind the Oslo Manual developed by the Organisation for Economic Co-
operation and Development (OECD/Eurostat 2005). The manual proposes guidelines
for collecting and interpreting technological innovation data. It deals with industry in
the broad definition and is not specific to construction. The premise of the data
collection effort is that the world is currently experiencing a major technological
revolution with the introduction and roll-out of information technology, but the
benefits of this technology are being harnessed unevenly and resultant productivity
growth is mixed. Governments and policy makers have seen the benefits of an
innovation focus in specific industries and would like to see a more widespread use of
the management strategies that encourage continuous improvement and innovation.
The Oslo Manual is seen as supporting the concept of the ‘innovation dynamo,
meaning the background and process factors which enable innovation in industry
through its monitoring of the level of innovation that currently occurs’ (OECD 2005,
p.6). Innovation is acknowledged as a complex and diversified process, which
requires an appropriate level of analysis in order for its occurrence to be understood
and the application and adaptation of exemplars to be made possible (Gray and
Davies 2007).
2.4.1 The Oslo Manual and its scope
The Oslo Manual’s scope is defined as follows (OECD 2005, p.7):
• The Manual covers innovation in the business enterprise sector only. It
does not deal with public services such as health or education;
• It deals with innovation at the level of the firm rather than at industry or
national level;
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• It concentrates on technological product and process (TPP) innovation,
with optional guidelines for other forms such as organisational change;
• It covers diffusion down to the ‘new to the firm’ level.
2.4.2 Products versus services
While innovation in services and service industries is important and some discussion
in the Oslo Manual is devoted to how to collect statistics in this area, this remains a
field for future detailed definition and research and is largely outside the scope of this
thesis. The distinction between service and product is important for this study,
because, to some degree, construction is a service-providing, as well as, a product-
generating industry. A particular area where overlap between technical and service
innovation is likely to occur in the construction industry, is the area of occupational
health and safety (OH&S) initiatives. In general, OH&S innovations will only be
included in this study if they include a product, process or equipment innovation.
Awareness-raising or other information and education provision activities will not be
included. These matters are more properly classified as organisational rather than
technical innovation.
2.4.3 Firm level focus
The Oslo Manual focuses on innovation delivery within the individual firm, rather
than larger and more complex regional clusters or industry-wide groupings. This
study proposes a similar focus, because decisions made at individual firm level
generate the aggregate performance of the industry. It is suggested that the
innovation enabling factors described at firm level by successful innovators, if
adopted broadly, would lead to improved industry efficiency and performance.
When defining a construction firm, this study seeks to identify independent and
responsible entities which operate in the competitive marketplace. Definitional issues
exist with regard to boundaries between firms, especially large and multi-national
corporations and their subsidiary companies. Complex corporate law in different
jurisdictions defines the ‘business’ or ‘firm’ in a variety of ways to do with
employment and structure. The construction industry unfortunately has more than its
fair share of ‘shelf companies’ and ‘phoenix operations’. In the former case, these are
firms who exist in name only and in the latter case, firms that go through repeated
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death and re-birthing processes to avoid responsibility for previous poor performance.
This study will endeavour to exclude firms that are fully controlled instruments of
larger entities and, therefore, not able to act independently, as well as firms with a
limited and temporary focus which have no interest in long-term improvement
strategy.
2.4.4 Technological versus other kinds of innovation
Afuah (2003) defines technological innovation as the application of knowledge about
tools, materials, processes and techniques to problem solving. In the Oslo Manual
definition (OEDC 2005), purely subjective changes in a product’s appearance or style
are regarded as marketing rather than technical or functional innovation, and are
considered as a separate category in proposed data collection. It will also be
necessary to exclude innovations that are superficial in nature and, therefore, do not
result in any significantly improved functional performance. For illustration purposes
for this thesis, a new colour range for concrete roof tiles would not be considered a
technical innovation, but a new tile pattern which improved water-shedding
performance would be included. While marketing innovations can have a positive
effect on profitability, it is difficult to define any positive change that they make to
performance. Technical innovation must, by definition, result in improved
performance or else it is simply change not innovation.
2.4.5 ‘New to the firm’ innovation diffusion
The Oslo Manual includes the study of innovations which are not internally
generated, but simply observed and transferred to a firm’s operation. This is a much
broader definition than previous studies which restricted themselves to innovations at
higher levels of novelty such as ‘new to the industry,’ ‘new to the country,’ or ‘new to
the world.’ The reason for this apparent ‘lowering of the bar’ with regard to the
definition of what can be considered as innovation is that the diffusion of a
technological innovation throughout an industry is the main source of its economic
impact. If new ideas are generated in a small number of innovative firms who then
jealously guard the commercial advantage of the innovation, overall industry
performance fails to improve and general prosperity is not benefited. The size and
scope of the construction industry, as well as its ability to impact on the lives of most
human beings, mandates that successful innovations are diffused throughout the
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industry wherever they are useful and become available for the benefit of all people
who depend on the built environment.
2.4.6 Technical and organisational innovation
A further distinction that is made in the 2005 edition of the Oslo Manual, but was not
included in the earlier 2002 edition, is the difference between organisational and
technical innovation. Technical innovation concentrates on significant improvements
in products, processes and equipment. It involves ideas that have an overtly physical
manifestation. Organisational innovation, on the other hand, may be primarily
thought-driven or activity-driven. Organisational innovations include such things as
changes to business practices, communication systems, human resources and
knowledge management. These innovations may result in significantly improved firm
performance and, indeed, they may provide critical support for technical innovation.
Marketing innovation is considered a separate category of innovation by the OEDC,
and while it is an area worthy of study it is not part of this thesis. Specifically
technical innovation is the area covered by this thesis. Organisational and marketing
innovation will only be included insofar as they support or enable technical
innovation and not as an end in themselves.
2.4.7 Australian Bureau of Statistics Survey
The Australian Bureau of Statistics published an extensive study into innovation rates
in Australian businesses in 2003 (ABS 2003) and a follow-up survey was published in
2008, dealing with the 2006-2007 financial year statistical collection (ABS 2008a).
Data was collected across 16 industry sectors, one of which was the construction
industry. The survey determined a base rate of innovation active businesses as shown
in Figure 2.2 overleaf. This overall innovation rate incorporates goods and services
innovation, operational process innovation, organisational/managerial innovation and
marketing method innovation. The first and second categories include those
innovations which can be defined as technical innovation. It should be noted that
construction is the poorest performing sector under the overall category.
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Figure 2.2 Percentage of Innovation Active Businesses by sector 2006-2007 (ABS 2008a)
Although the construction industry performs relatively better when the two technical
innovation categories of goods and services innovation and operational process
innovation are considered, it nevertheless remains in the relatively ‘low achiever’
category in both types of technical innovation compared with the level in other
industry sectors. Part of the explanation for this lies in the diversity of industry
sectors and how they define what they regard as technical innovation. It is possible
that there was some under-reporting of technical innovation in construction, because
there is a sense in which all buildings are innovative because they are unique and
cannot be produced as a series of identical objects on an assembly line. However, the
survey respondents would have been aware that what is measured in terms of
innovation is some level of breaking away from ‘business as usual’. How great this
step needs to be is a question that is difficult to define and is likely to vary from
Per
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industry to industry because of operational differences. As construction is a technical
industry, it is possible that construction respondents defined the step at a higher level
than other industries. There is insufficient evidence at the moment to determine
whether or not this is the case.
When looking at goods and services innovation (Figure 2.3 below), the construction
industry no longer fills the bottom slot, but it is among the low-level innovators along
with mining, transport and real estate. On the whole, these four industries do not
provide many ‘small ticket items’ and this may partially explain their relatively low
goods and services innovation rate. The cost of change is greater if the item or
process being altered is expensive, and consequently innovation rates can tend to be
lower in ‘large ticket item’ industries.
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Oth
er S
ervi
ces
Figure 2.3 Percentage of Goods and Services Innovation Active Businesses by sector 2006-2007 (ABS 2008a)
Per
cent
age
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The area of operational process innovation (Figure 2.4 below) reveals a similar
pattern. Construction is among the low rated innovators, despite operational
processes being an area where it could be expected that technological industries
would excel. Only seven of sixteen industry sectors achieved operational process
innovation rates of greater than 15%. This may be at least partly due to the cost of
operational change in industries that are not capital intensive.
0.0
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Figure 2.4 Percentage of Operational Process Innovation Active Businesses by sector 2006-2007 (ABS 2008a)
2.4.8 BRITE Survey
Apart from the ABS survey, the other significant attempt to measure innovation rates
in construction in recent years is the Building Research on Innovation, Technology
Per
cent
age
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and Environment (BRITE) survey conducted in 2004 for the Australian Cooperative
Research Centre for Construction Innovation (Manley 2005). The survey dealt with
the road and construction industry, so its findings are not directly comparable to the
innovation rates for the construction industry in the ABS Innovation survey. The
BRITE survey found a ‘new to industry’ rate of technological innovation of 18%
which is a higher level of innovation than might be anticipated from the ABS results.
The survey sample was much smaller than the ABS study, but the survey
questionnaire was designed specifically for the industry, so it is possible to use it as
evidence that innovation in construction may be under-reported in the larger survey.
It is not proposed that this thesis seek to verify or to dispute innovation rates as
recorded in the ABS or BRITE surveys; that would be a statistical task requiring very
considerable resources beyond the scope of a research thesis. Instead, this thesis will
examine the reasons why some construction companies are able to innovate at a much
higher level than the sector average. It is envisaged that this could lead to useful
guidelines and advice for those firms who wish to lift their own innovation rates.
Furthermore, it is suggested that such advice could have particular relevance to SME
construction businesses and that this is an area where there is considerable potential
for improved innovation performance.
2.5 SME definition in the Australian context
The introduction of the Goods and Services Tax (GST) in Australia in 2000 involved
a system of national registration for all businesses delivering or using goods and
services. The system involves the registration of the trading unit by an Australian
Business Number provided by the Australian Taxation Office. Only businesses who
earn total revenue of less than $50,000 a year are exempt from this requirement and
some of them have an ABN nevertheless, because it enables them to claim back GST
amounts they have paid out to other businesses. As a result, there are very reliable
figures about the extent of business activity and a relatively small informal sector. In
its Counts of Australian Businesses 2007, the ABS found that the construction
industry had 308,405 businesses operating at the end of the financial year 2006-2007
(ABS 2008 p.10). This figure would include sole operators, ‘own account workers’
and multiple trading identities operated by the same individual.
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Since 2003, the ABS has specifically been collecting information on innovation in
Australian business. In these data sets, they define a business somewhat more rigidly
than the Counts of Australian Business model. Businesses are only included in the
innovation survey if they lodge Pay As You Go (PAYG) instalments with the
Australian Tax Office. This means that sole traders who operate as a business with a
separate business bank account from which they pay themselves wages are included
in the survey. Sole operators who accept payment for work and deposit the receipts in
their own private account are not included, whether or not they later submit quarterly
Instalment Activity Statements (IAS) or Business Activity Statements (BAS). There
is a resultant large discrepancy in the number of businesses listed as operating in the
construction industry in the Counts of Australian Businesses and in the Innovation in
Australian Business Survey. For 2007, the figures are 308,405 and 124,000
respectively. It can be seen that more than half the businesses in the greater
construction industry operate in a fairly informal manner and employ few people.
The breakdown of the 124,000 businesses in the scope of the construction survey is as
follows in Table 2.1 below.
Table 2.1 Numbers of businesses in construction
Category Number of Employees Number of businesses
Micro-business 0-4 91,000
Small business 5-19 30,000
Medium business 20-200 4,000
Large business > 200 < 1,000
Therefore, the Australia-wide population of formal, non-micro SMEs in construction
for the calendar year 2007 is 34,000 businesses. Of these, approximately one third, or
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11,000, are in New South Wales and slightly more than half of that number (6000),
are located in the Greater Sydney metropolitan area. This represents the population of
all potential businesses to be studied in this thesis. The total incorporates many
businesses that primarily operate as labour-only subcontractors. These are not the
focus of this research, however, as it is intended to study only those firms within this
population that have successfully delivered a recent technical innovation with a high-
level of originality. The primary qualification for eligibility for the study will be
having received some form of peer recognition as a successful innovator from
industry or professional organisations. This technique is classified as a form of
‘purposive sampling’ or non-probability sampling (Teddlie and Yu 2007). It will be
discussed further in Chapter 5 of this thesis.
2.5.1 Construction SME contribution to GDP
The ABS Annual Reports on Australian Industry itemise industry sector contributions
to Industry Value Added as a measure of relative sector performance (ABS 2008b).
As recorded in Table 2.2 overleaf, the statistics show that the construction industry
contributes approximately 10% of national Industry Value Added (IVA) and that
construction SMEs contribute just over 80% of the industry total, or 8% of the
national total. The construction industry also accounts for 11% of total sales and
service income, and SMEs contribute 77% of the industry total sales and service
income (see Table 2.3 overleaf). These percentages are considerable, especially when
the amount of attention sometimes given by policy makers to the views of the large
construction companies is taken into account. Construction SMEs clearly have the
potential to generate economic impact well beyond their restricted size. As such, they
represent a suitable area for ongoing study.
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Table 2.2 Construction industry contribution to Industry Value Added (IVA) 2006-2007 (ABS 2008b)
Business size Total industry
value added
($m)
Construction
industry selected
industry value
added ($m)
Percentage
contribution to
total industry VA
(%)
Small 249,506 45,245 18
Medium 168,036 13,516 8
Large 294,489 14,127 5
Total 712,030 72,888 10
Table 2.3 Construction industry contribution to sales and service income 2006-2007 (ABS 2008b)
Business size Total sales and
service income
($m)
Construction sales
and service income
($m)
Percentage
contribution
to total
industry SSI
(%)
Small 691,169 116,872 17
Medium 518,833 57,484 11
Large 893,998 51,830 6
Total 2,103,999 226,185 11
These percentages for the contribution made by construction SMEs are considerably
higher than for the other industry sectors recorded. Taken together, these statistics
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indicate the potential economic benefit to the nation of improved performance in
SME construction. This serves to emphasise the significance of a research focus on
SME construction as an area that can result in significantly improved economic
performance if barriers to effective change are addressed.
2.5.2 Characteristics of construction SMEs
There are some known areas where SMEs are distinctly different from other industry
participants. Typically, they often have very limited financial resources, both in terms
of capital and borrowings. As a consequence, they often have little spare capacity to
plan for change. Frequently, they have to contend with higher levels of competition
than larger businesses (Manley 2008b). SMEs may be less able to monitor their
competitors than large business. Consequently, keeping an up-to-date technology
watch may be beyond their resources, unless they can do so through an industry
network. Finally, some SMEs may be motivated to simply survive rather than to
grow (Abbott et al. 2006). Both the risk and the cost of change may be too great for
SMEs to attempt.
It has been decided to concentrate on SMEs who are not in the micro-business
category, precisely because the micro-business category is likely to suffer from the
restrictions listed above to a greater extent than even slightly larger businesses. This
is not meant to imply that micro-businesses are an unsuitable area for an academic
study, but simply that due to their very small size they are likely to have less
consistency as a class and to be far more subject to the constraints of individual
capacity and fortune.
On the positive side, many SMEs are headed by very able individuals, who have
chosen not to work in large business because of the brake that a large bureaucratic
organisation can put on individual creativity. Such individuals have the potential to
be leaders of industry change and generators of new systems and products. Nam and
Tatum (1997) refer to them as ‘champions’ of innovation. Dulaimi et al. (2005)
found that the role of such champions can be crucial in innovation delivery. The fact
that the industry is characterised by many small businesses is, therefore, both its
strength and its weakness. It does lead to restrictions on capacity and resources, but it
also enables creative individuals to move quickly in new directions and develop new
solutions to industry problems. It is this potential that justifies this research into
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enabling factors for non-micro SME construction companies. It is also possible that
creative individuals in SMEs can lead reform in industry practice in terms of
improving the environmental and social outcomes of construction processes.
2.6 Taxonomy of construction innovation
Slaughter (1993) looked in detail at the kinds of innovations developed by builders as
opposed to component manufacturers and found that builders were not only more
innovative in general, but that they generated the great majority of innovations that
related to the connection or integration of component parts. In Slaughter’s study, 34
innovations in stressed skin panels for housing construction were examined and 84%
of these innovations were generated by the builders rather than the panel
manufacturers. As a result, it can be suggested that there exists a de facto design
partnership between the component manufacturer and the builder which can lead to
effective innovation delivery, if both sides recognise the necessity of acknowledging
the constraints that affect the other’s operations. Slaughter went on to develop a
taxonomy of construction innovation, based on the degree to which the individual
innovation required changes in the systems and products around it (see Figure 2.5).
In ascending order from small change to major change in the surrounding
components, Slaughter classified innovations as Incremental, Modular, Architectural,
Systems and Radical (Slaughter 1998). Using this taxonomy, the developers of
innovations can become more aware of the changes that need to occur to deliver their
innovation and consequently understand the level of intra-industry cooperation
needed for successful adoption of a good idea in construction.
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Although the classifications represent a useful framework for discussing innovation, it
should be remembered that innovation delivery is a complex process. An innovation
that may be modular for one company in a supply chain may require systemic
innovation for the users of the innovation (Harty 2008). This complexity has been
described by Afuah and Bahram (1995) as “The hypercube of innovation”. There are
several other efforts to classify innovation in the literature. These include the
decision making typology of Mitropoulos and Tatum (1999) which sorts innovation
into two major categories; strategic/proactive versus project-based/reactive. There is
also Gopalakrishnan and Bierly’s typology based on knowledge characteristics which
has three general categories: Tacit/explicit; Systemic/autonomous; and
Complex/ordinary (Gopalakrishnan and Bierly 2001). This taxonomy, however, was
explicitly created for organisational rather than technical innovation and as such is not
strictly relevant to this study. Harty (2005) described, the essential difference
between a variety of innovation processes as consisting of whether they are bounded
or unbounded. In other words, the critical aspect is whether or not the innovation has
Figure 2.5 Slaughter’s taxonomy of innovation (Based on Slaughter 1998, p.229)
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impacts beyond the operation of the innovator’s own sphere of activity. Lim and
Ofori (2007) taking a different tack found three classes of innovations: those that
clients are willing to pay for because of their advantages for the end-user; those that
reduce construction costs; and those produce competitive advantage through their
intangible qualities. Each of these taxonomies of innovation are valid tools and will
be used to classify the technical innovations studied for this thesis, however, it is
important to remember that technical innovation is essentially unique in each of its
occurrences. For this reason, a great deal of attention is paid to the nature of research
in construction and to the funding of research that generates innovation.
2.7 Construction innovation literature
Many authorities, such as Keeney and Raiffa (1976), recommend the use of a
literature review specifically to identify the significant attributes in the area of a
research problem. The authors explain that a literature review may be used to identify
significant factors for later testing by empirical research. In consequence of this
advice, a search was made of refereed journal articles that dealt with innovation and
the construction industry published between 1990 and mid 2008. Five international
journals dealing specifically with construction were searched initially. These were:
Building Research and Information (BRI), Construction Innovation (CI),
Construction Management and Economics (CME), Engineering Construction and
Architectural Management (CME) and Journal of Construction Engineering and
Management (JCEM). References in these articles led to a further five journals, each
with three or more articles on the topic of construction innovation. In descending
order of the number of articles discovered, these were: Research Policy (RP),
Facilities (F), Journal of Management in Engineering (JME), Australian Journal of
Construction Economics and Building (AJCEB) and International Journal of
Innovation Management (IJIM). A further 29 journals were found with one or two
articles on construction innovation.
Articles were then classified as addressing any of five identified principal themes.
The themes were: firm resources; client and end-user influences; project-based
conditions; industry networks; and regulatory climate. Many articles addressed
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multiple themes. In addition, several sub-themes were identified under each of the
five identified primary themes.
As well as the articles referred to in Table 2.4 (below), an additional 112 articles were
identified during the initial search, which related to, but did not specifically address
the topic of construction innovation. Some of these articles are included in the
citations for this thesis.
Table 2.4 Occurrence of construction innovation themes
Journal Number of
construction
innovation
articles
Firm
resources
Client and
end-user
influences
Project-
based
conditions
Industry
networks
Regulatory
climate
CME 38 21 11 8 9 5
BRI 19 10 7 8 8 2
JCEM 17 10 2 7 5 2
CI 13 9 6 5 2 2
ECAM 13 8 3 2 3 2
RP 7 1 0 1 0 0
F 5 2 3 2 1 2
JME 4 3 1 0 1 0
AJCEB 3 2 2 2 1 0
IJIM 3 2 0 0 0 1
Other <3
in total
31 22 15 17 15 5
Total 153 90 50 52 45 21
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Detailed discussion of each factor and identified sub-factors follows. It is not
intended to comprehensively refer to every article included in Table 2.4. Rather the
intention is to sort out and evaluate principal areas of agreement and disagreement.
Ongoing monitoring of the literature published during the course of the study was also
undertaken and further references were added from relevant newly published papers
during the time of writing of this thesis. The initial literature survey to identify
significant factors is not claimed to be definitive, it was simply the starting point
consideration of the factors involved.
2.7.1 Five major categories of factors affecting technical innovation
For this study, the published literature was surveyed with a view to dissecting the
possible factors that affect technical innovation delivery in the construction industry.
Five factors were identified as reported in the literature to be of primary importance.
The first area concerns matters that are entirely internal to the company concerned,
that is, all the available resources, both tangible and intangible, that the SME has at its
disposal, to be deployed towards the innovation process. Technical capabilities,
capital investment, liquidity, time allocation and individual enthusiasm are all part of
this complex mix of resources that may be available to a potential innovator in a
construction SME. This factor has been summarised as ‘Company resources’.
The second area concerns matters that are entirely external to the company concerned.
It deals with influences at both ends of a construction project: at the front end, there
are those who commission the project, variously known as developers, clients and
investors; and at the bottom end of the project, there are those who occupy and use the
building project, known as the customers or the end-users. Both groups ultimately
pay for building projects, and consequently they potentially have a great deal of
power to influence the building project’s progress. Because of a general lack of
technical expertise, however, these groups are largely outside the mechanics of the
project delivery process, although sometimes they can take an active role. This factor
has been summarised as ‘Client and end-user influences’.
The third area identified from the literature relates to the innate nature of construction
projects. These are complex, but temporary, activities that involve a great deal of
organisational expertise. They also have to allow for the contingency of the unknown
factors that may arise on site once work has commenced. Management of human and
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physical resources requires careful planning as well as flexibility and responsiveness.
These matters have been summarised as ‘Project-based conditions’.
Published research has also pointed to the importance of intra-industry connections
that are not related to specific project delivery. These can be connections with
professional bodies which uphold ethical standards, or industry bodies which
represent the construction industry to the broader public. They may also include
organisations that provide independent verification and testing of new technologies.
This factor has been summarised as ‘Industry networks’.
The fifth and final factor identified related to the legal framework in which the
construction industry operates. Several areas of law have impact on the construction
industry. These include contract law, torts and professional responsibility
obligations. The major impact on building projects is, however, through building
regulation by the different levels of government. This factor is summarised as the
‘Regulatory climate’.
Each of the five factors will be discussed in detail as it relates to the published
literature. In addition, sub-factors which relate to specific areas under the influence of
the five factors will be described.
2.8 Company resources
The available resources of a firm, along with a multi-disciplinary approach to team
formation, are both widely regarded as critical for innovation success (van der Panne
et al. 2003). The ‘trial and error’ nature of much innovation requires a supportive
management structure and sufficient resource allocation if it is to deliver benefits.
The fact that builders can generate and deliver significant and valuable technical
innovations has been recognised by researchers since the 1960s (Bowley 1960;
Bowley 1966; Nam and Tatum 1992; Slaughter 1993). Motivational issues and the
value of innovation champions have also been acknowledged (Nam and Tatum 1997).
Leiringer and Cardellino (2008), however, caution that studies of innovation
champions may be subject to a bias that results from the champion practising
“impression management” by controlling the information presented to any observer.
The critical importance of the allocation of sufficient resources to deliver innovation
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has been clearly described by several authors (Gerwick 1990; Dulaimi 1995;
Slaughter 2000; Blayse and Manley 2004; Tatum 2005). This is particularly true in
the construction small business sector which often needs to be convinced of the direct
benefits to themselves of adopting new technologies, if they are to be persuaded to
change their current practices (Andresen et al. 2000).
2.8.1 Personal motivation
The personal motivation-level of the team which generates and delivers a successful
innovation has been demonstrated to have a decisive effect on the overall process
(Hartmann 2006b). Individual contributions can be critical in several roles and at
several stages of the innovation delivery process. This is likely to be particularly true
in smaller businesses where the impact of an individual innovator is proportionally
greater. Egbu (2004) explained that any meaningful innovation strategy should have
unequivocal support from the top in order to be successful. It also needs to be
monitored and reviewed regularly. Slaughter (1998) mentioned the role of
‘gatekeepers’ who are aware of possible solutions to a given problem. These people
can also be important as evaluators of the innovation delivery process. Winch (1998)
drew on a comparison with the aviation industry to describe the importance of
‘systems integrators.’ This is a role which in construction is often split between the
principal architect or engineer and the principal contractor. Consequently, third party
brokers are sometimes needed to moderate the process of innovation delivery when
responsibility is divided. Mitropoulos and Tatum (2000) identify ‘champions’ as the
people who absorb the risk of an innovation and drive the change. Top management’s
aspirations and proactive attitude towards technology are seen as a major source of
competitive advantage. Szulanski’s study of knowledge ‘stickiness’ takes a different
view and finds that motivational factors are less important in the diffusion of
innovation than conventional wisdom might suggest (Szulanski 1996). Abbott et al.
(2006) looks specifically at small business in construction and find that their
motivation to innovate differs intrinsically from that of larger businesses as they may
not necessarily be seeking to grow. Developing an appreciation of the benefits of
innovation for these companies may require the intervention of third party
organisations such as industry bodies or larger businesses in partnership
arrangements.
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2.8.2 Available financial resources
It has long been recognised that the traditional construction industry structure can
inhibit innovation, simply by reducing incentives to introduce technical or process
innovations (Brown 1990). Slaughter (1993) reported that builders commonly
innovate when technology is easy to modify and the costs of doing so are low. Barrett
and Sexton (2006) noted that small companies, in particular, often lack sufficient
‘slack resources’ in order to attempt innovative activities. The difficulties that small
construction businesses encounter in trying to survive, let alone innovate, have been
well documented (Sexton and Barrett 2003a; Sexton and Barrett 2003b; Sexton and
Barrett 2004; Sexton et al. 2006; Manley 2008). Such companies certainly depend
more heavily on scarce resources than do larger firms and they can often be
constrained by their financial circumstances.
An insightful paper by Pries and Jansen (1995) urged construction companies to be
more extrovert and market-oriented in order to overcome the inertia of ‘business as
usual’ type operations. Miozzo and Dewick (2002) found that contractors are more
likely to invest in new assets and their complementary knowledge if this can be
financed from reserves or cash flow rather than from borrowing. This innate risk
aversion can limit the potential for innovation. More recently, Stewart and Fenn
(2006) stressed that innovation needs to be ‘strategic’ or targeted towards a goal,
which can be profitably exploited, or else it is highly unlikely to succeed.
2.8.3 Available time
It is an industry axiom that construction companies exist under constant pressure to
deliver their projects on time and without going over budget. This can result in
avoidance of new ideas, because there is perceived to be no spare capacity to test new
products or systems. Shortage of resources contributes to a perceived lack of interest
in innovation especially in small construction firms (Davidson 2001). Veshosky
(1998) found that time constraints were a barrier to innovation in engineering and
construction firms. Even in large construction firms, groups such as designers often
feel that insufficient time is allocated to their role in the project delivery process and
consequently innovation may be stifled or curtailed (Salter and Gann 2003). This is a
short-sighted position, however, as it leads to the inability to adapt to potential
positive changes and efficiencies. Motawa et al. (2004) have looked at using
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computer scheduling to model the economic effect of iterative innovations. The
system they have developed will eventually form a useful tool for managers
modelling the possible impact of a proposed technical innovation on a company’s
available resources.
2.8.4 Available skill levels
Ling (2003) found the capabilities of people working on projects to be a significant
factor in the implementation of innovations along with level of interest, the working
environment and task groupings. Knowledge retention and transfer within
construction firms has tended to be problematic due to the competitive nature of much
construction activity. Individuals may fear the loss or devaluation of their hard-won
individual expertise. The rights of individuals need to be carefully considered if trust
is to be established. Janssen (2004) stressed the need for procedural and distributive
fairness in the implementation of innovations in order to prevent ‘burnout’ among
innovators. Participants need to be confident of receiving individual benefit from
gains they achieve for the organisation, or otherwise they will resist productivity gains
for fear of eventual job losses (Taylor and Levitt 2008). Attribution of innovations is
also important. The developing, presenting and championing of an innovation is a
stressful process which individuals are likely to abandon if the rewards are
inappropriate or insufficient (Mitropoulos and Tatum 2000). Ben Mahmoud-Jouini
(2000) has described how innovative construction products and processes can be
generated when project management skills are linked with technical skill
development. In a study of innovation in construction equipment, Arditi et al. (1997)
found that such innovations are likely to be incremental in nature. Furthermore,
technical innovations are not confined to the industry that develops the innovation;
they may cross industry boundaries. In a study of the Swedish construction industry,
Brochner (2008) found that those construction managers who diversified into the
facilities management area tended to be more proactive in identifying business
opportunities, were more collaborative in style and put a higher value on education
and training in their workforces. This skill-set enabled them to be more innovative in
their original endeavour.
When considering available skills in their broadest sense, Cohen and Levinthal (1990)
argued that the ability of a firm to recognise, assimilate and apply new knowledge can
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be described as their ‘absorptive capacity’. This ability or skill was seen as critical
for many performance measures. Szulanski (1996) found that ‘absorptive capacity’
was a significant factor in innovation diffusion. It was shown to outweigh
motivational issues which had traditionally been seen as critical for innovation
delivery. Peansupap (2004) and Peansupap and Walker (2006) made similar findings
concerning the diffusion of ICT in the construction industry.
The ‘technology push’ versus ‘demand pull’ debate remains inconclusive (Nam and
Tatum 1992; Arditi et al. 1997; Barlow 2000; O’Connor and Yang 2004; Anderson et
al. 2004; Abbott and Allen 2005). Innovation can, and does, occur as a result of both
influences and both require the knowledge base of the innovating firm to be robust
and diversified.
2.8.5 Insurance/risk
The role of firm culture and organisation in regard to risk management and
responsible corporate strategy is an increasingly important area of study (Loosemore
and Phua 2011). A study by Pries et al. (2004) has reported that attitude change is
required in order for the construction industry to progress from its technology and
project-oriented base. The authors suggest that there needs to be more client and
market focus, and construction firms should concern themselves more with the
delivery of a successful end product, than with the intricacies of the delivery process
itself. Some may regard this approach as a softer focus; however, it can be entirely
consistent with maintaining technical excellence, simply adding an extra level of
performance requirement. Improved project outcomes when both risk and reward are
shared among project participants have recently been reported (Love et al. 2011).
Much of the construction industry, however, tends to have an over-reliance on cost-
based measures of design performance when compared to quality and constructability
issues. This amounts to a cultural barrier to innovation. The importance of design to
innovation is stressed, as is the idea that designers need to participate in the collection
and analysis of data on design articulations if full benefits are to be achieved (Ivory
2005). While an innovation needs to have measurable benefits to be successful, these
benefits may be other than strictly cost-based. A culture of innovation requires the
consideration of environmental and social goals along with economic ones and this
involves some inherent risk.
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Miozzo and Dewick (2002) discuss the issue of governance and the extent to which
strategic control is in the hands of those who allocate resources for investment in
innovation. The capacity to assess innovation risk requires both a broad knowledge
of economic conditions and a specific knowledge of the potential benefits and pitfalls
of a particular proposed innovation. At the same time that this hard commercial
assessment must be made, the potential innovation manager needs to ensure that there
is a degree of openness in the firm’s capacity to develop beneficial changes. Seaden
et al. (2003) found that, in general, innovative behaviour varies with the size of the
firm and that small firms are largely risk-averse. Nevertheless, firms that are able to
overcome this challenge are likely to achieve significant gains from innovative
practice.
In a multi-industry study which included construction, Searle and Ball (2003) found
that company policy usually rewarded non-managerial level employees for
innovating, but expected managerial staff to do so as a matter of course. This
inconsistency was a source of blockage to the implementation of new ideas. Creating
the conditions in which individuals can freely engage in innovative processes requires
a certain level of open exchange both within and between organisations. It may be
that the temporary loss of exclusive possession of a profitable idea can be
compensated for by the generation of many more profitable ideas. Creativity only
flourishes in an atmosphere of openness, and overly cautious risk aversion can stifle
the potential of innovative suggestions.
2.9 Client and end-user influences
Clients have been clearly identified as key drivers of performance improvement and
innovation (Hartmann et al. 2008). Blayse and Manley (2004) noted that clients are
key drivers of innovation because they have the ability to influence firms and
individuals involved in building and construction projects in a way that either fosters
or impedes innovation. Clients exert this influence through a number of means,
including the design and implementation of contracts, pre-qualification schemes and
regulations (Fernie et al. 2003a). It has often been pointed out that the greater the
influence of the client, the more complex is the relationship to project outcomes
(Green 1996; Sidwell et al. 2001; Walker 2002; Walker et al. 2002; Ivory 2004; Boyd
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and Chinio 2006). Ivory (2005) has cautioned that this client influence is not always
positive for innovation, although it has the potential to be so. Barlow and Köberle-
Gaiser (2008) found similar impediments to innovation resulting from Private Finance
Initiative (PFI) agreements in the UK (Barlow and Köberle-Gaiser 2008). Client
influence may operate through the procurement structures selected or through the
level of involvement and technical competence of the client, both of which can be
included under the heading ‘client characteristics’. Each of these areas is discussed
below.
2.9.1 Procurement systems
Procurement in the construction industry can sometimes tend to favour the lowest
price options ahead of value-based options (Mahdi et al. 2002). Client-based
interventions such as the movement towards partnering and relationship contracting is
one attempt to address industry problems (Hampson and Kwok 1997; Bresnen and
Marshall 2000; Walker et al. 2000; Hampson et al. 2001; Chan et al. 2004; Cheng et
al. 2004; Sarshar et al. 2004; Turner 2004; Ingirige and Sexton 2006; Walker et al.
2002; Kumaraswamy and Dulaimi 2001; Kumaraswamy et al. 2002; Walker 2002;
Walker and Keniger 2002; Walker and Hampson 2003a&b; Hauck et al. 2004;
Kumaraswamy et al. 2004; Tawiah and Russell 2008). Such initiatives tend to be
mainly confined, however, to large and complex projects with the small and medium-
sized projects being largely uninvolved. Clients and end-users are also often the
driving force behind the use of procurement systems to propel the industry towards
more sustainable practices (Bossink 2002b; Dewick and Miozzo 2002; Dikman et al.
2005; Sterner 2001). Once again, however, this influence tends to have more effect at
the large company and large project level. The diffusion of these procurement systems
towards the SME sector of the industry is problematic, because of the mistrust that is
widely felt towards the large business sector.
Procurement systems in the construction industry influence innovation, because they
set the parameters for knowledge sharing and risk management (Khalfan and
McDermott 2006; de Valence 2010b). Systems such as alliances, specifically address
the traditional adversarial culture of construction and seek to alter its course. Alliance
contracts are themselves organisational innovations and one of their principal effects
is to encourage further innovation through a supportive environment and a fair
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distribution of economies gained. Rezgui and Miles (2010) have proposed a new
model of alliance that is specifically tailored for SME construction contractors and
which deals with income, risk and responsibility within the alliance, as well as
behavioural and collaborative management. Drejer and Vinding (2006) found that
firms who engage in partnering arrangements are more likely to be innovative than
those who do not. Of course, experience with the implementation of new
procurement methods is variable, and some research has shown that the contractual
basis of Public Private Partnerships (PPPs) in particular can sometimes discourage
innovation (Eaton et al. 2006; Leiringer 2006). This is especially so when smaller
businesses are involved.
It is worth pointing out that the complex nature of construction procurement means
that the terms ‘clients’ and ‘customers’ are not always synonymous in the industry as
they are in some others. The client can be regarded as the initiator and financer of a
project, sometimes called the ‘developer’. Customers, on the other hand, may be the
end-users of the construction product; that is, the project’s eventual occupants. There
may be a conflict of interest between the two groups, especially if the client or
developer is a speculator with only a short term interest in the outcome of the project.
End-users have their part to play in the diffusion of technical innovations, but they are
often less likely to identified as drivers of the innovation process in construction
(Harty 2010).
Like clients, end-users or customers have the potential to drive innovation (Fagerberg
1995; Ozaki 2003). Unlike clients, however, the end-users of buildings may
sometimes be of minor economic significance to the construction contractor, as they
are somewhat removed from the direct sphere of influence. Thus, some end-users
have little capacity to influence procurement arrangements. Nevertheless, post
occupancy evaluations and similar studies present the opportunity to perform a
feedback function for construction contractors which may improve this situation
(Lowry 2002). It is possible that this process may have a greater impact in the future
as end-user evaluations become common practice in the industry.
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2.9.2 Client characteristics
In discussing ‘Client characteristics’, this research will focus on the knowledge,
experience and management skill levels of the client, rather than their personal
idiosyncrasies. Clients may be groups as well as individuals and, consequently in the
group situation, individual personality traits are less significant. The absorptive
capacity of the industry and of individual firms has been identified as an important
precondition for innovation to flourish in the economy generally (Hampson and
Tatum 1997; Gann 2001; Ling et al. 2006). Manley (2006) has demonstrated that a
high-level of technical competence in the client body is a significant enabler for
construction innovation. Both the clients’ core competences and their internal
innovation capabilities need to be maintained if they are to foster and encourage
innovative thinking at levels of contractors who have input into the construction
industry (Lindahl and Ridd 2007).
Nam and Tatum (1992) have pointed out that client values are not necessarily as
conservative as they are often depicted to be by other industry participants. Some
clients who actively foster innovation within their own organisations are able to
accept and encourage innovation in the building projects which they commission.
This openness means that technology availability can drive technical innovation
without the presence of ‘market push’ factors from the outset. In order to increase
contractor contribution to innovation and value creation, clients need to take a long
term perspective and actively encourage an innovation-friendly climate on projects.
While traditional industry structure has been demonstrated to be a barrier to
innovation at times (Barlow 2000; Sidwell et al. 2001; Dulaimi et al. 2003), new
procurement methods under the general heading of relationship contracting can
sometimes fail to address the specific concerns of smaller companies and sub-
contractors in their relationships with clients (Barlow and Köberle-Gaiser 2008). This
is particularly so if risk remains shifted downstream from clients and large contractors
to the smaller players. Erikssen et al. (2007) found that procurement methods which
affect the level of sub-contractor involvement in project integration do not necessarily
improve the level of innovation delivered. Clients can counter this tendency by
having procedures which prioritise value over simple cost measures and which share
the benefits of innovation with all the participants in the process. A collaborative
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project climate and a ‘best for project attitude’ among all project participants is only
likely to occur if the client who is the project generator values such an atmosphere
and makes support for it explicit.
The demand for a more sustainable construction industry is increasingly giving
impetus to construction innovation (Bossink 2002). This is mainly a market-pull
force directed by clients and end-users, but can also be a technology-pull force
directed by the innovation generators themselves. As Bossink (2007) has clearly
identified, sustainable project delivery is heavily influenced by the personal style of
the manager involved. As clients are increasingly expressing a general community
desire to improve the sustainability of the construction industry, they can support this
improvement by choosing project managers who combine technical competence with
the ability to coordinate knowledge exchange and cooperation among the project
participants.
The construction industry derives considerable benefit from early adopter or lead-user
clients. Involved and active clients contribute a great deal towards the efficacy of
built environment solutions. They can initiate innovations themselves, foster an
atmosphere in which innovations are able to occur, facilitate the adoption of external
innovations and encourage the diffusion of successful innovations through feedback
and publicity. Frequently, lead-users have a long-term focus which is quite different
from the primary concerns of the construction organisation. Their role is a pivotal
one in the amelioration of the construction industry problems mentioned in previous
sections. Not all clients, however, are lead-users and understanding the innovation
behaviour of differing client groups is critical to the successful diffusion of new ideas
(Hartmann et al. 2008).
2.10 Project-based conditions
Project-based industries have been demonstrated to have different priorities for
innovation than more stable industries such as manufacturing (Blindenbach-Driessen
and van den Ende 2006). The nature of project-based activity can sometimes mean
that companies lack the stability and continuity necessary to develop complex
innovations which require time and multiple iterations. The competitive tender
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structure can sometimes mean that the financial benefits of innovations produced by a
builder are usually passed on fully to the end-user rather than to the builder’s own
profit margin (McCoy 2008). The builder’s reward may be that it is possible to use
the innovation in future projects and to gain more market share as a result.
Consequently, interest in knowledge management and the capture of project-based
lessons for future use is a growing area of research (Kamara et al. 2002; Bresnen et
al. 2003; Fernie et al. 2003b). There is a clear understanding that the temporary
nature of construction project teams can lead to a loss of useful experience and
unnecessary duplication of effort. This discontinuity of effective problem solving is
also a factor in the move towards more integrated supply chains in construction
(London and Kenley 2001; Love et al. 2002; Palaneeswaran et al. 2003; Briscoe et al.
2004).
2.10.1 Supply chain relationships
A great deal of research in recent times has focussed on the benefits of integrated
supply chains for a diverse industry made up of many small players (Dainty et al.
2001a; Dainty et al. 2001b; London and Kenley 2001; Love et al. 2002b; Love et al.
2004a; Palaneeswaran et al. 2003; Zou et al. 2005; Larssen et al. 2006; McCoy et al.
2008). Along with the efficiency and productivity benefits, there is also the
possibility that a more integrated supply chain can foster innovation. Establishing
good feedback loops between manufacturers, fabricators and installers can bring their
differing perspectives together for the delivery of a higher quality product (Larsson et
al. 2006). Arditi et al. (1997) described how innovations generated by production
intensive science-based companies outside of the industry can generate technical
innovations that are useful to the construction process. Manley (2008) has shown that
manufacturers have the potential to deliver construction innovations if knowledge
flows and cooperative relationships are supported. Stable supply chain relationships
can also smooth out the disruption caused by the temporary nature of project-based
work. Robeiro and Love (2003) found that strong e-business connections with their
supply chain were particularly useful for SME construction contractors looking for
competitive advantage in the market place.
Those technical innovations classified by Slaughter (1998) as “architectural”,
“systems” or “radical” require changes which can alter operations up and down the
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supply chain, because linkages with other parts of the construction process are
affected. Consequently, successful delivery of the innovation involves
communication, consultation and expert input from each affected member of the
supply chain (Andrews and Hahn 1998).
2.10.2 On site problem solving
Toole (2001) has identified four ‘trajectories’ or pathways which can ameliorate some
of the problems of the traditional craft-based and project-centred construction
industry. These are moving production off site; using machinery instead of labour;
using engineered materials instead of natural materials; and 'systems design'. While
this perspective is valid, the move to industrialise construction should not prevent
recognition of the fact that the site-based nature of construction can itself generate
practical innovation potential. Mitropoulos and Tatum (2000) identify ‘process
problems’ as one of the four forces which drive construction innovation. Doree and
Holmen (2004) present a case study where a significant technical innovation was
delivered by a contractor as a result of particularly severe project conditions.
Individuals as well as companies can generate innovative ideas resulting from
carefully analysing problems that occur on construction projects. A great deal of
practical knowledge is held in the minds of the individuals who work on site, yet this
experience is often not documented and may consequently be undervalued (Vakola
and Rezgui 2000). Korsvold and Ramstad (2004) have demonstrated from case
studies in the Norwegian construction industry that innovation can be fostered on
projects by using reflective practice to develop collective know-how and creativity
among project participants. This approach has the potential to improve industry
performance if adopted in a more widespread manner.
2.10.3 Occupational health and safety (OH&S) improvement
The construction industry has had long term problems with its poor safety record and
the source of the problem appears to be multi-faceted (Langford et al. 2000;
Loosemore and Andonakis 2007). Lingard and Holmes (2001) found a somewhat
fatalistic attitude to the inevitability of injury on construction sites among some small
businesses in construction. Sarshar et al. (2004) have stressed the need for better risk
mitigation, post-project reviews and improved induction programs to improve
construction project safety performance. At least in first world countries, the
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potential consequences of the largely poor OH&S record of the industry are now of
such economic importance that the need to improve safety standards is itself
becoming a push factor for construction innovation. Cultural changes favouring
hazard assessment processes and the use of safety equipment are gradually changing
the nature of work for many construction workers. The drive for a safer workplace
has in some cases led to specific technical innovations, whose main purpose is to
decrease the likelihood of workplace trauma and repetitive strain injuries (de Jong et
al. 2003).
Reichstein et al. (2005) reports on the liabilities that construction firms face with
respect to other industries in trying to deliver innovations. Despite the undeniable
difficulties inherent in a temporally organised project-based industry which produces
long-lived products, it is nevertheless possible to successfully deliver technical
innovation (Doree and Holmen 2002). The lessons learned from the exceptions to the
rule may well be useful to the industry as a whole.
2.11 Industry networks
Technical innovations, and especially inventions, may be generated by an individual
in isolation, but successful delivery to the marketplace involves the participation of
many other actors. Tatum (2005) identified the need to increase technical support for
construction innovation, while Harty (2005) pointed out the need to consider the
social and organisational context in which innovation is located. Indeed, Cohen and
Prusak (2001) claim that it is a firm’s social capital that is paramount in the efficient
operation of any business. In addition, Yin (2006) noted that innovation takes the
creative energies of many minds and therefore benefits from the free exchange of
ideas and information. Fleming and Juda (2004) reported on the advantages of
information gatekeepers building connections outside of their specific disciplines and
industries. Staber (2004) found that project-based workers with work-related social
networks outside their organisation tended to be more innovative than those without
such networks. Abbott and Allen (2005) have described how the UK Centre for
Construction Innovation has been able to facilitate both inter- and intra-organisation
cultural assessment with the aim of improving the climate for innovation. The Centre
has acted as an innovation broker, bringing together industrialists, researchers,
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academics and practitioners and fostering information exchange. The Cooperative
Research Centre for Construction Innovation (CRC CI) in Australia has filled a
similar role (Keast and Hampson 2005). Innovation brokerages have also been
successfully trialled in other Australian industries, such as mining and resources
(Dodgson and Steen 2008). While there has been some research that disputes the
efficacy of industry networks as an aid to innovation (Taylor and Levitt 2008), it is
nevertheless likely that some kind of industry facilitation will be needed in the future
to lift industry performance.
2.11.1 Professional and industry associations
Successful innovation in the building and construction industry is widely believed by
industry observers to be heavily influenced by the structure of relationships in the
industry (Reichstein et al. 2008). This is true of networking activities as well as of
integration of the supply chain. As noted in Blayse and Manley (2004), relationships
are important because they have the ability to facilitate knowledge flows via
transactions and interactions between individuals and firms. A ‘community of
practice’ approach to knowledge diffusion is also reported to be successful in
encouraging construction firms to innovate (Walker and Peansupap, 2003). The
authors found that ‘word of mouth’ is an extremely powerful means of encouraging
innovative practice. Joint problem solving is an effective framework for encouraging
the sharing of tacit knowledge and the development of trusting relationships.
‘Communities of practice’ can develop through industry organisations or through
repeat project groupings and the relationships formed can counter the short-term
project-based emphasis of much of the construction industry. In particular, the
sharing of information technology may assist in breaking down inter-firm barriers of
secrecy and mistrust (Bossink 2002).
There is evidence that the breaking down of such barriers is already occurring.
Miozzo and Dewick (2004) interviewed several large construction companies
operating across national boundaries. It was found that firms with strong inter-
relationships with related groups were most likely to prosper. Stable long-term
networks were found to be responsible for enhanced performance. The authors have
suggested that governments should encourage the formation of such long-term
industry relationships. Comet (2009) reported that small firms in the French
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construction industry have derived considerable benefit from cohesive networks
within their sphere of activity (Comet 2009). Rutten et al. (2009) looked at the role of
systems integrators who foster innovation by encouraging inter-organisational
cooperation. Within the Australian context, Manley (2003) reported on four key
approaches for construction industry relationships, namely systems, networks, value
chains and clusters. All are capable of providing the framework for innovation, but
the critical issue is their integration. Freel (2003) noted that for small firms
networking or informal association can be particularly critical for innovation delivery
and diffusion. Without such networking, the innovations developed in small firms
can sometimes fail to result in improved performance. The innovation may ‘wither
on the vine’. In addition, small firms often rely on informal networks of their peers in
order to learn of latest ‘best practice’ ideas. Informal networks, however, can only
partially resolve the difficulties and insecurities inherent for employees in loosely
connected project-based firms. More stability in inter-firm relationships is still
required to produce an industry structured to foster innovation.
Industry relationships can be contractual and based around projects or they may be of
a more general informal nature, based on long association over several years and
many projects. Some degree of stability is achieved through formal and informal
partnering relationships. Partnering relationships, usually governed by contractual
obligations, can also foster innovation provided that project knowledge and project
risk is fairly distributed. Chan et al. (2003) have described the benefits of
construction partnering as experienced in Hong Kong. A comprehensive
questionnaire revealed that under partnering arrangements, projects are more likely to
be delivered on time and on budget, and the number of conflicts and defects are also
reduced. By eliminating ‘defensive case building’, the cost of negotiating and
delivering a contract is considerably reduced. A better safety record and improved
customer satisfaction were also reported from partnering projects. The detail of the
contractual arrangements may have influenced the success of the projects studied, but
the results show a demonstrable benefit over traditional contractual arrangements.
The terms partnership, joint venture and alliance are used with varying shades of
meaning by different authors. The specific detail of the procurement relationship may
vary from project to project and some arrangements may fit into more than one
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category. As elucidated by Walker et al. (2002), project partnering and project
alliancing can result in significantly different relationships from the adversarial ones
commonly encountered in the industry. The partnering contractual relationship may
remain partially adversarial, in that the partners may be able to benefit at each others’
expense. Alliances on the other hand are predicated on sharing both risk and reward
between the parties, so that they either gain or lose together. Walker et al. (2003)
have reported that relationship-based procurement systems, notably alliances, can
foster innovation through the development of trust and the sharing of risk.
Professional bodies and industry organisations have the potential to foster multiple
connections within the industry through the informal contacts via the organisations
activities. There is some evidence that these informal contacts produce greater value
than government-sponsored formal networks aimed at improving performance
(Huggins 2001). Whichever way they are generated, these informal contacts have the
potential to encourage the level of communication necessary for parties to enter into
formal alliances and other groupings on projects.
2.11.2 Research organisations and universities
According to Barrett and Barrett (2003), integration and risk sharing needs to spread
from project firms to research institutions if a culture of innovation is to develop.
Industry is often reported as being dissatisfied with the results of research (Barrett and
Barrett 2003). It is argued that communication between those involved in research
and industry practitioners needs to improve for innovation to flourish and that
alliances may be formed which include research institutions alongside construction
firms and private consultants. Laursen and Salter (2004) found that firms with
successful open research strategies tend to have universities in their network of
contacts.
Formal and informal networks also assist in encouraging innovation through
providing a forum for discussion and through the dissemination of new ideas
(Hampson 1998). University Centres can provide this opportunity. Participation in
such networks is a good entry point for an individual firm wanting to develop a
system of innovative practice. Actually implementing such a system is likely to
involve an awareness of means of developing a culture of innovation in an enterprise
or an industry. Innovation intermediaries or ‘innovation brokers’ may be helpful in
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the development and diffusion of technological innovations (Hartmann 2006a;
Stewart and Hyssalo 2008; Winch and Courtney 2007). Universities are particularly
well placed to offer independent advice and assistance to companies wishing to adopt
new Information Technology systems and move to electronic storage and transfer of
data (Dodgson et al. 2002). There may be issues resulting from the differing
priorities of researchers and industry (Lorch 2003; Maqsood et al. 2007). The
funding of research priorities, therefore, needs to take both perspectives into account
if benefits are to flow to all participants.
2.12 Regulatory climate
The approval and regulation system under which the construction industry operates
can have the effect of either encouraging or discouraging innovative activity (Gann et
al. 1998; Campagnac 1998; Winch 2000; Slaughter and Shimizu 2000; Dewick and
Miozzo 2002a; Dewick and Miozzo 2002b). This may be due to the structure of the
industry, its ability to respond flexibly to challenges or even to more esoteric factors
such as how national culture values originality. There is an often-observed tension
between innovation and standardisation which may be difficult to resolve, but is not
necessarily without benefit for the industry (Edum-Fotwe et al. 2004).
2.12.1 Performance-based standards
Several authors have pointed to the restrictive role that planning and building
regulators may have on innovation (Oster and Quigley, 1977, Gann and Salter 2000;
Dubois and Gadde 2002; Meacham 2010). As a response, a widespread trend in
recent years in developed economies has been the move away from prescriptive
building regulation towards regulations that are ‘performance-based’. The framework
of national or local building regulations and standards as well as occupational health
and safety laws (OHS) represents a predetermined context into which successful
innovations need to fit. If it is legislatively too difficult to introduce changed practice,
then innovation can be largely stifled. Performance-based standards set the outcomes
required, but not the means of achieving those outcomes. They are open-ended and
therefore more responsive to context. There is some multi-industry evidence that this
is a successful approach (Bruneau 2004). Performance-based standards are often
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highly valued by building designers, as they are seen as enablers of flexible and
innovative solutions (Fujitani et al. 2004).
The positive impact of industry regulations on innovation in the building and
construction industry was examined in Blayse and Manley (2004). They cited
literature that pointed to the importance of government regulatory policies that
exerted an influence on demand and played an important role in moulding the
direction of technological change. It was suggested that ‘performance-based’, as
opposed to prescriptive or ‘deemed to satisfy’ industry regulations, had much more
capacity to provide the necessary conditions for innovation to occur in the building
and construction industry. A good example of such performance-based regulations
providing the opportunity for innovations is the relatively new discipline of Fire
Safety Engineering which has been developed largely in response to these standards.
It is based on providing innovative solutions in circumstances where the standard
code-driven response is inadequate or uneconomical. In particular, the application of
performance-based solutions to fire safety issues in refurbishment projects has led to
significant economies without loss of safety performance.
The trend towards introduction of performance-based standards is not without its own
difficulties. Sexton and Barrett (2005) have documented the way that performance-
based building can sometimes run counter to the business logic necessary for
innovation. In addition, performance-based standards can affect the reliability of
financial valuations of existing buildings. This is because the certainty formerly
provided by strictly enforced requirements on means of egress and fire protection has
been removed. A fire safety engineer may be able to provide a non-structural solution
in a building that would otherwise require expensive structural alterations to achieve
code compliance. Valuation is a significant issue for investors, so this problem
cannot be easily ignored. Some research in New Zealand has uncovered some
problems with building performance under flexible standards, but this research comes
from a legal perspective and may have more to do with certainty about legal rights
when standards are not met rather than with actual building performance (May 2003).
The flexibility provided by performance-based standards can sometimes be gained at
the cost of certainty, so there has been some resistance to the move to such standards
and it is clear that they do not always deliver the predicted benefits or result in greater
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innovation (Meacham et al. 2005). It is possible that more experience with the
operation of performance-based standards will settle the difficulty as innovative
performance-based solutions become standard practice.
2.12.2 Industry standards
The construction industry does not operate entirely on the basis of complying with
existing regulatory codes in all instances. With regard to new products and processes,
it may be that industry standard practice advances well ahead of building regulation.
In these cases, expert guidance and the attitudes of competitors can have a great deal
of influence. The pressing need for more stringent energy efficiency standards is
currently driving a great deal of innovation in the construction industry generally and
especially in the housing sector (Gann et al. 1998). Such innovation can be fostered
by semi-government and non-government organisations, as well as through
regulation. Both environmental performance and OH&S are areas where community
desire for improvement is pushing the industry to raise standards. Both
environmental groups and social activists are pressing the industry to change long
held cultural attitudes and improve its outcomes on these matters. Responsive
companies are achieving market gains by incorporating these ideals into their own
agenda.
2.12.3 Local government regulations
Not only is the construction industry itself characterised by many small entities, in
some countries governance and regulation is similarly diverse and local in nature. In
places like Australia where the construction approval system is not regulated by a
unitary national government but is devolved to smaller local government entities,
particular issues with consistency and verification can arise (Bell and Lowe 2000;
Brown and Furneaux 2007). This local focus also runs contrary to the move towards
market globalisation and international competition for construction projects. Local
regulations can protect sensitive local cultures, environments and practices, but their
downside is a possible failure to adapt to change and potential gains brought about
through an innovation culture.
Progressive companies can only actively improve their own performance and perhaps
hope to influence their competitors. The primary responsibility for improving
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standards lies with the industry regulators. Their input addresses issues of physical
safety, environmental effects and social consequences of construction industry
performance. The increasing trend towards performance standards, instead of
prescriptive solutions, is one that has considerable merit for encouraging innovation.
It is now generally accepted that while regulatory systems need to maintain standards,
they must be sufficiently flexible to enable the development and adoption of new
solutions. This is a difficult balance to achieve; but without it, regulators become a
brake on improvement and a barrier to innovation.
2.13 Summary of results from the literature review
The discipline of innovation management first developed in spheres of activity which
are fundamentally quite different from the construction industry. Despite this, the
literature shows that the application of innovation theory in the construction industry
can be of considerable benefit. The construction industry, at the same time, reacts to
and drives the global economy. Efficiency gains that can be made in construction
have significant flow-ons to other industries, as well as benefits for society as a
whole. Innovation is regarded as essential to the continued growth; consequently, the
construction industry needs to foster and encourage innovative practice (Hardie et al.
2006).
There is a considerable body of evidence in the literature to lead to the conclusion that
innovation requires a cooperative atmosphere and that the construction industry needs
to abandon its adversarial practices if innovation is to flourish. Despite some notable
exceptions, the traditional culture of the construction industry has produced attitudes
that are often antagonistic towards innovation and change. There is also considerable
inertia in the current system but, nevertheless, the movement towards a new culture is
already apparent in some areas. Innovation can be fostered through management
practices that encourage multi-disciplinary teams and idea sharing practices. There is
also widespread agreement that construction firms need to develop systems for
providing continuity between projects so that knowledge gained is retained and
disseminated. The equitable sharing of risk and reward through all project
participants is another measure widely believed to aid innovation.
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The changes required in current practice are not small and are likely to involve
considerable effort in their implementation. A radical overhaul of industry culture has
long been seen to be required (Pavitt 1984; Nam and Tatum 1989; Reichstein et al.
2008; Sundqvist 2004; Woudhuysen and Abley 2004). The project-based and largely
adversarial nature of construction contracts is slowly being replaced by innovative
management initiatives which share risk and foster collaboration. Already, systems of
knowledge management and empowerment of participants are providing encouraging
results for those organisations which actively pursue these goals. Robust networks of
contacts within the industry increase the likelihood of innovation generation and
innovation diffusion. Initial sources of innovative practice are many and varied.
Creative individuals can lead innovation, provided they are given an environment
conducive to the exercising of their talents. Innovations can stem from the
identification of a newly recognised need such as increased environmental
performance. A technological development itself can inspire innovation in the form
of new applications. An organisational structure that encourages monitoring of new
ideas and practices and the careful evaluation of innovations creates an atmosphere in
which further innovation is quite likely to occur.
The literature reports on considerable synergies between organisational innovations
and technological ones. They tend to occur together and result in multiple benefits.
There is much industry support for the adoption of innovation strategies, both in
organisational as well as technological matters. There remains some disagreement
about the best way to encourage innovation in those areas of the industry which
currently perceive of no benefit to themselves in partaking in the process. There is
also disagreement about who should lead the process and what structures will best
promote the necessary change.
It is, nevertheless, clear that measurable improvements in performance, quality, time
saved and in profitability can be demonstrated as having resulted from construction
innovations. A culture which favours and fosters innovation is widely regarded as
crucial to the continued growth and prosperity within the industry and the larger
economy. This thesis reports on the experience of SME construction managers who
have been recognised by their peers as having delivered successful technical
innovations. It is contended that their opinions and insights will give an indication of
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the most appropriate strategies that can be adopted by those wishing to emulate
current day innovator’s success. Chapter 3 deals with the selection of methodologies
suitable for capturing the knowledge gained by the identified successful innovators.
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CHAPTER 3 RESEARCH METHODOLOGY
Chapter 3 considers the possible methodological approaches which might be used to
address the question of ‘What lessons can be learned from instances of successful
technical innovation delivered by construction SMEs?’ The limitations of the use of
purely quantitative research approaches when dealing with human actors are
presented. The value of mixed methodology structures in construction management
research is explained and the specific methodological structure selected for this
research is presented. Several possible methods of triangulating quantitative data
with qualitative research outcomes are discussed.
3.1 Mixed methodology research
Creswell (2009) has explained how the perceived legitimacy of both quantitative and
qualitative research has resulted in an expanding trend towards mixed methodology
research. A mixed methods approach can incorporate the best features of quantitative
and qualitative research (Teddlie and Tashakkori 2009). The conclusions drawn from
the two strands can be compared and contrasted. Convergences and disagreements
between the methodological approaches may offer particular insights that either
approach alone may not provide. Of course, this is also true if two or more different
research methods are used within the overall paradigm of either quantitative or
qualitative research. The approach of using multiple viewpoints for the same research
object is referred to as ‘triangulation’ (Jick 1979). Drawing on a metaphor from the
geometry of spatial location, triangulation can be seen as a way to improve the
accuracy of research results by collecting different types of data which relate to the
same observed phenomenon.
The concept of triangulation in research methodology relies on the suggestion that the
weaknesses of any single method are likely to be counter-balanced by the
compensating strengths of another. As Jick (1979) has explained, qualitative
researchers can benefit from quantitative methods of systematising their observations,
employing sampling techniques and coding their qualitative data sets. Similarly,
quantitative researchers can learn from qualitative approaches to social observation
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strategies, interpretive fieldwork and the investigation of puzzling findings. Mixed
quantitative and qualitative methods are especially appropriate when the research
focus is on matters which involve the element of human behaviour.
3.1.1 Debate over quantitative research in construction management
Seymour and Rooke (1995) have addressed the issue of the human element in
construction management research and come down heavily on the side of the
argument that claims that purely quantitative research, which they term the ‘rationalist
paradigm’, does not effectively answer research problems in construction
management. The authors state that the distinction between subjective experience and
objective reality, which works authoritatively in the natural science disciplines, falls
down in fields that involve research into human beings, because researchers have no
way of confirming the validity of their version of events compared with that of the
participants. The metaphor often used is that ‘the dancers cannot be separated from
the dance’. Seymour and Rooke (1995) claim that the expectation implicit in the
rationalist paradigm is that research findings will be unambiguous. They further state
that such an approach is not suitable for making assessments about social processes.
The individual researcher’s own viewpoint is hard to separate from that of the people
being studied or observed. Seymour’s and Rooke’s call for a debate among
construction researchers on this subject provoked responses that included widely
varying perspectives and some outright rejection (Root et al. 1997; Runeson 1997a
and b).
The more common response to Seymour and Rooke (1995 and 1998), Rooke et al.
(1997) and Seymour et al. (1997) from other researchers has been to suggest that it is
not appropriate to characterise disagreement about the value of quantitative and
qualitative research as an ‘all or nothing situation’ (Raftery et al. 1997; Chau et al.
1998). These authors contend that there is a place for the rationalist or scientific
method approach in construction research and that it can exist alongside and in
company with qualitative and interpretive research. They argue against
‘methodological monopolies’ and ‘throwing the baby out with the bathwater’. They
note that it has always been possible to use quantitative methods in a reflective mode
and thereby lessen the likelihood that the researcher will impose inappropriate
strictures on data and the evaluation of results.
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Similarly, research methodologies have been developed which increase the rigour and
reduce the subjective nature of qualitative research such as case studies, interviews
and ethnography (Barrett and Sutrisna 2007; Dainty et al. 2000; Dey 1993; Maqsood
et al. 2007; Pink et al. 2010; Sutrisna and Barrett 2007). Dainty (2008) has recently
looked at the nature of the research type in published articles in Construction
Management and Economics and has concluded that the positivist paradigm and
quantitative methodologies still account for the great majority of construction
management research, as evidenced by the published record in this journal. Dainty
(2008) recommends ‘reflexivity’ ,where researchers openly question the effectiveness
of their methodologies and the robustness of their results as an appropriate strategy to
improve rigour in qualitative research. Following this advice and seeking reflexivity,
this researcher has sought to extend the findings of the quantitative AHP study with
qualitative research in the same subject area.
3.1.2 ‘Paradigm wars’
The methodology debate which occurred in the late 1990s in construction academia
mirrors a much larger and more disputative debate in the broad fields of the Social
Sciences and Economics over several decades and commonly referred to as the
‘Paradigm wars’ (Tashakkori and Teddlie 1998). The dichotomy is often expressed
as between various polar alternatives such as quantitative and qualitative
methodologies; deductive and inductive reasoning; and positivist and constructivist
philosophy. Positivism is a philosophy of science theory which holds that the only
authentic knowledge is that which is based on sensory experience and positive
verification. Positivist theory is founded in the traditional scientific method arising
from the approach of 17th century scholar Francis Bacon who set out the ground rules
for making meticulous observations and carrying out systematic experiments (Kuhn
1996). In the twentieth century, mathematician and philosopher Karl Popper
reconsidered the Baconian scientific method and came to the conclusion that
experimentation, however careful and however often repeated, cannot prove an
hypothesis. Repeated experimentation only serves to increase the probability of the
hypothesis being correct. On the other hand, a single case where the hypothesis fails
under experimental verification is enough to disprove it (Popper 1954; 1979). The
Popperian paradigm of Post-Positivism revitalised the scientific method and gave
new, though restricted, support to the use of quantitative experiments as a way of
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understanding problems in the physical world. Constructivism is the opposite of
Positivism/Post-positivism because it holds that scientific knowledge is constructed
by scientists and not discovered from the world. Based on the work of educational
theorist Jean Piaget, constructivism believes knowledge is created within the
individual’s own mind and cannot be transmitted objectively. Consequently, the
constructivist view is that there is no single valid methodology and qualitative
methodologies are more suitable than scientific experimentation for use in studies of
human beings.
While some researchers in particular fields continue to hold tightly to an exclusively
‘Positivist’ or an exclusively ‘Interactionist’ perspective and reject the mixing of these
approaches, there has also been strong recent growth in the area of mixed methods
where both quantitative and qualitative research strategies are used together to tackle
a complex research question (Mingers and Gill 1997; Morgan 2007; Teddlie and Yu
2007). Furthermore, it has been clearly demonstrated that qualitative research can
have structure and rigour and can be applied within established traditions of inquiry
and research which may previously have eschewed such methods (Creswell 1997).
This researcher favours the mixed approach over restrictive ideological approaches
that exclude either quantitative or qualitative methods. This is not intended to deride
or characterise as inadequate single method studies, but rather the intention is to seek
to validate results in an area of ambiguity by approaching the research question from
several different angles. As Creswell (2009) declares, “there is more insight to be
gained from the combination of both quantitative and qualitative research than either
form by itself” (Creswell 2009 p.203). This insight can been described as
methodological triangulation.
3.1.3 The case for mixed methods in a developing discipline
Love et al. (2002) discusses the suitability of methodological triangulation as a
research strategy in construction management. It is contended that the approach used
to study events and phenomena in the natural sciences is largely inappropriate in
construction management research, because the latter involves “thinking participants”
(Love et al. 2002a p.294). The separation that exists between thoughts and events in
the natural sciences does not exist when the subjects of the research have their own
thought processes. In consequence, uncertainty is created and the laws of scientific
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generalisation are violated. Triangulation as a strategy aims to get a clearer picture of
reality than a single methodological approach can generate. If the results of the
differing strategies converge or demonstrate agreement, then this can be regarded as
adding to the robustness of the conclusions. Nevertheless, convergence is difficult to
achieve, especially when the separate methodologies used are drawn from differing
fundamental world views. Researchers adopting the triangulation approach are,
therefore, cautioned that they should not adopt this approach merely for convenience
or because other efforts to close a research problem have failed (Love et al. 2002,
p.301). The adoption of a mixed methods approach is a positive step towards a
broader understanding of the research question rather than an admission of the failure
of a single methodology to produce robust conclusions.
Li and Love (1998) proposed the need for a theory of construction problem-solving
that considers not only the problem, but also the problem-solver and the industry in
which the problem occurs. In the absence of such a theory, the discipline cannot be
regarded as mature. This thesis hopes to make a contribution to the development of
the understanding of construction problem-solving and decision making by
approaching these issues with mixed method strategies in order to triangulate the
results of separate quantitative and qualitative studies. As Love et al. (2002 p.296)
have noted, construction businesses “are essentially human enterprises and cannot be
understood solely in terms of technical relations among components from a purely
scientific approach”. Consequently, it was always the intention of this researcher that
the results gained from a quantitative study would be extended by a qualitative
approach and the results evaluated against one another.
3.2 Mixed method strategies
Creswell (2008) sets out the types of mixed methods strategies which can be used
when combining quantitative and qualitative research. Such methods can be applied
either sequentially or concurrently. If the data is collected sequentially, either the
qualitative or the quantitative phase may occur first, depending on the intention of the
study. Six strategy options are identified: Sequential Explanatory Strategy;
Sequential Exploratory Strategy; Sequential Transformative Strategy; Concurrent
Triangulation Strategy; Concurrent Embedded Strategy; and Concurrent
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Transformative Strategy (Creswell 2008, pp. 211-216). The strategies’ purposes and
applicability are summarised below.
The Sequential Explanatory Strategy is suitable for researchers with strong
quantitative leanings. It involves collection and analysis of empirical data, followed
by secondary qualitative data collection to examine surprising or unexpected results.
Strong weighting is given to the quantitative data. The results from the quantitative
data inform the secondary qualitative data collection.
In the Sequential Exploratory Strategy, the two phases are reversed. Qualitative data
is collected and analysed and this informs the second phase of quantitative data
collection. This strategy is used to explain and interpret relationships and is useful for
a researcher who wants to explore observed phenomena. Generally, stronger
weighting is given to qualitative aspects.
Sequential Transformative Strategy is also a two-phase process, but it involves a
“theoretical lens” which overlays the sequential procedures and guides or shapes the
study (Creswell 2009). Equal weight can be given to both phases or, alternately,
either may predominate. It is appropriate when the researcher wishes to test an
existing theoretical perspective.
The Concurrent Triangulation Strategy involves the researcher collecting both
quantitative and qualitative data at the same time and observing any convergences or
differences in the two data sets. This can be referred to as confirmation, dis-
confirmation, cross-validation or corroboration (Creswell. 2009). The intention is to
offset the weaknesses inherent in one method with the strengths of the other.
In Concurrent Embedded Strategy, there is a primary method that guides the project
and a secondary database that plays a supporting role in the procedures. The
secondary data collection may be seeking information at a different level of analysis.
The data from the two sources is compared and contrasted in a discussion of the
results.
Finally, the Concurrent Transformative Strategy is guided by the use of a specific
theoretical perspective which is the driving force behind the methodological choices.
It is appropriate when the researcher intends to test a pre-existing ideological
framework.
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3.2.1 Evaluation of strategies
In the case of this study, sequential methods were ruled out because many of the
subjects of the research were extremely busy people who were only available for a
limited period of time and were unlikely to accept repeated return visits from the
researcher. Consequently, the survey was completed and initial qualitative
information collected at the same time in a single face-to-face interview.
Subsequently, further information was collected through demonstrations and site
visits to construction projects, at times convenient to the survey respondent’s
company. The survey was completed between February and December 2009. The
qualitative data was collected between February 2009 and April 2010. Both empirical
and descriptive data gathering were completed by April 2010.
In considering the concurrent options, Transformative Strategy was ruled out because
of the absence of an existing coherent theoretical construct which addressed the
research topic of factors affecting the delivery of innovation in SME construction.
The Embedded Transformative Strategy was ruled out, because the researcher
contends that while the weighting of the two data collection strands is not exactly
equal, nevertheless one does not dominate the other to any great extent. The
perspectives of both quantitative and qualitative data are considered necessary in
order to adequately explain the phenomenon of technical innovation delivery by SME
construction organisations. This leaves Concurrent Triangulation Strategy as the most
appropriate option. This researcher has an issue with the use of the term
‘triangulation’ to describe data collection from two (rather than three) different
perspectives as the geometric or surveying metaphor implies. Nevertheless, as the
literature review can be considered the third perspective of the research, the
Concurrent Triangulation Strategy is selected as a means of observing convergence or
disagreement in the quantitative and qualitative areas of the thesis. The design of this
methodology is set out in Figure 3.1 overleaf. The three strategies have been pursued
throughout this research into the factors affecting technical innovation delivery by
construction SMEs.
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Figure 3.1 Concurrent Triangulation Strategy: Convergence Model
Developed from Creswell and Plano Clark (2007 p.63)
The basic reasoning behind a triangulation strategy is simply that given robust
methodological application “convergence usually equates to robustness in terms of
knowledge acquisition” (Love et al. 2002 p.301). When convergence does not occur,
this signals areas that require additional investigation as unknown factors may be in
operation. Given the advantages of triangulation, it was decided that at least one
qualititative and one quantitative research method would be employed.
3.3 Selection of qualitative method
Among the qualitative techniques that were considered as potentially appropriate for
this study are: structured interviews; ethnographic studies; grounded theory; action
research; content analysis techniques and case studies. Some of the advantages and
disadvantages of each of these research methods are discussed below.
3.3.1 Structured interviews
One scenario considered was that of a series of structured interviews with selected
experts in the field of construction innovation delivery. Structured interviews have
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the advantage that they enable the researcher to control the line of questioning and
direct the participants’ responses to the critical study questions (Creswell 2009).
Participants are able to describe the history and context of their involvement in the
research area. This would enable relatively rapid collection of data on possible
critical factors for technical innovation. The information provided would, however,
be highly filtered through the perceptions of the chosen experts. The researcher’s
presence could affect the data collected, as the experts might be looking to protect
their reputations or direct future research in the area (Leiringer and Cardellino 2008).
Structured interviews with individuals who had personally been the driver of
successful technical innovation delivery within a construction industry SME were
considered to be likely to yield fresh insights into the research question. Such
individuals are likely, however, to be unable to spare a great deal of time to this
research project. It was also considered that due to time constraints, structured
interviews would necessarily cover a smaller number of the successful innovators
than a quantitative survey that could be completed in less than an hour.
Consequently, a method that involved less demand on the time of the SME innovator
was sought in order to maximise the participation rate. It remained a possibility that
unstructured comments could be collected during other data collection exercises.
3.3.2 Ethnographic studies
Deriving from the field of anthropology, ethnographic research aims to obtain a
holistic picture of the subjects studied by observing their everyday experiences in
context (Creswell 2009). The subject participants are interviewed for their own
opinions. Relevant observations are also collected from other sources. In the case of
a construction company, ethnographic research would be likely to involve a degree of
embeddedness by the researcher in the innovative company concerned. At the very
least, it would require long hours of observation within the identified company. The
time frame for this research did not permit extensive observation from within one or
more construction companies. It was also likely that access would be a problem due
to issues of commercial sensitivity. Nevertheless, the message from ethnographic
theory that the researcher should seek a holistic picture of the observed subject is well
taken.
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3.3.3 Grounded theory
Grounded theory as originally expounded by Glaser and Strauss (1967) involves the
researcher attempting to derive a generalised theory from observation and analysis of
a process, action or interaction. As such, it reverses the traditional scientific
experimental approach. Instead of propounding a theory and subsequently designing
experiments to test the validity of the original theory, grounded theory starts without
any preconceived theoretical structure. Observations are made and data is collected
with the intention that careful consideration of the information gathered will suggest a
theory. The validity of the grounded theory developed by this means should then be
judged according to its fitness, relevance, workability and modifiability (Glaser and
Strauss 1967; Glaser 1992). The developed theory may then be tested in a more
traditional manner.
It should be noted that the proponents of grounded theory do not accept its
classification as a qualitative methodology, because they assert that ‘all is data’. As a
result, the approach may be used for numerical data as much as for qualitative
observations. For the purposes of this thesis, however, it was only considered as a
means of exploring qualitative data. While suitable for exploratory research,
grounded theory method was not chosen for this study because its multi-stage
approach would, as with ethnography, involve considerable demands on the time of
the research subjects. Although Hari et al. (2005) have demonstrated that this
methodology can be useful for studying the difficulties experienced by small
construction businesses, this was in a context where the participants had an
expectation of significant improvement in their own organisation’s performance by
means of involvement in the study. It was considered that this time commitment was
unlikely to be readily available from SME innovators who were already successfully
delivering innovations.
3.3.4 Action research
Action research is a reflective process for the purposes of progressive problem
solving. The researcher works with individuals in a group or team to address the way
they approach problems and find solutions. The term was coined by Kurt Lewin in
the 1940s as part of his work on the problems of racial minority groups (Lewin 1946).
Action research may be undertaken by companies or groups with a view to improving
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their performance, practices and self-awareness. Davey et al. (2002) has proven the
efficacy of this technique for small construction companies. Even more so than
grounded theory, however, this approach would involve a strong commitment from
the participating SMEs and it was therefore not chosen for this thesis.
3.3.5 Content analysis techniques
Computer-aided qualitative data analysis software (CAQDAS) can be used to analyse
information from multiple sources with a view to coding and identifying patterns in
qualitative data (Veal 2005). The most commonly used software package for these
purposes is Nvivo™. The software assists in the shaping of large amounts of text and
other data into coded groupings which are then able to be used to test intuitive
assumptions about the meaning of the aggregated data. This software was accessed
too late in the research process for it to be used for this thesis. It is envisaged that this
methodology will be used to code and re-analyse the data collected during this thesis
with a view to deriving more value from the research study.
3.3.6 Case studies
The case study as a research methodology can be defined as the intensive analysis of
the occurrence of an individual event or phenomenon when observed in its temporal
and spatial context. Case studies may be selected because they are typical instances
of the event studied, or because they are unusual and may therefore shed light on the
extent or nature of the phenomenon being observed (Fellows and Liu 2008). As Yin
(2009) explains, case study research is suitable when the number of contextual
variables is so numerous that traditional experimental design would be unworkable
due to the number of data points required. Case studies are also suitable when the
primary data collection technique is participant observation. In order to enhance the
validity of the information gained from case studies, it is recommended that multiple
sources of evidence are used and that a case study database is developed as part of the
methodology (Fellows and Liu 2008).
The case study methodology enabled a process whereby the researcher could collect
multiple information sources relating to instances of technical innovation by
construction SMEs without making unreasonable demands on the time of the
individual innovators. Data could be accessed from the innovators themselves by
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interview, but also from published academic and trade literature, professional
association reports, site visits and post occupancy evaluations. This approach
lessened the likelihood that the innovators could manipulate the dialogue with the
researcher to their own advantage as suggested by Leiringer and Cardellino (2008).
Case study methodology allowed the observation of multiple instances of technical
innovation by construction SMEs and therefore facilitated access to a variety of
different kinds of successful innovation. For this reason, case studies were selected as
the methodology most likely to yield useful results within the projected timeframe of
the thesis study.
3.4 Selection of quantitative method
Quantitative methods considered for use in this study into the delivery of technical
innovation in construction include: statistically validated questionnaires; computer
simulations; and goal-oriented decision-making.
3.4.1 Statistically representative questionnaires
A questionnaire used to survey a statistically significant proportion of the population
of construction SMEs in the study area was initially considered as a means of
determining the drivers and inhibitors for technical innovation. Such questionnaires
could be composed using Likert scale questions. This would yield large amounts of
numerical data which could then be analysed with standard statistical tests.
The population of construction industry SMEs as recorded by the Australian Bureau
of Statistics is in the region of 125,000 (ABS 2008, p.10). This presents a difficulty
in that the population of construction SMEs is so large that it would be beyond the
resources of a PhD candidate to contact and receive responses from a statistically
significant sample. Such surveys are rightly the province of the ABS. Consequently,
it was decided to narrow the focus of the research to successful SME technical
innovators. These would then be contacted and data collected by several means in
order to record their experience.
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3.4.2 Computer simulations
In recent years, computer game software has been developed which mimics the
operation of a construction enterprise and simulates the decision making processes
that occur on construction projects. It would be possible to set up a scenario where a
technical innovation was proposed for development and deployment within an SME.
Chief decision makers from such companies could potentially be invited to work
through the issues involved via the game simulation. The game would score the
success of the simulation decisions numerically. This might well yield useful insights
into the delivery process for technical innovation. It would be more useful, however
if employed as a follow-up methodology once a well structured scheme of decision
making priorities had been determined. Therefore, it was not selected for this thesis,
but is suggested as a future research methodology to extend this research.
3.4.3 Goal-oriented decision-making
It was considered that in order to achieve a high response rate from successful SME
innovators, it would be necessary to demonstrate to them a research tool that might
prove useful in their future operations. The term goal-oriented decision-making
describes a variety of research tools that give individuals and firms a structure for
decisions that they might otherwise make in an ad hoc or intuitive manner. There are
numerous methodologies that come under the general heading of Multi Criteria
Decision Making (MCDM). These are considered in Chapter 4 and the preferred
option is given. The value of this methodology for this study lay in the rigour of its
mathematical basis combined with its ease of use. The technical innovators who are
the subject of this research may not all be particularly prone to self-analysis. They
might also be not especially articulate about the process that they have been through.
MCDM methodologies enable the capture of a quantitative structure behind the series
of choices that are made when delivering a technical innovation.
3.5 Methodology for evaluating convergence in the data sets
Having identified the appropriate methodologies for addressing the research question
as qualitative case studies and a quantitative Multi Criteria Decision Making survey, it
is then necessary to consider how it might be possible to aggregate the results from
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the two methodological viewpoints. Love et al. (2002) cautions against the use of
methodological triangulation for the sake of convenience. It is unlikely that randomly
chosen different methodologies will result in the ‘closure’ of a research problem or
the imposition of an overall unifying theory on diversely collected data. Any
convergences in the findings will, therefore, require interpretation. Love et al. (2002
p. 301) counsel the researcher that “to understand the world of meaning one must
interpret it”. The researcher needs to look beyond the simple outputs of different
methodologies adopted and offer constructions that attempt to explain holistically
how the results relate to the initial study object. Therefore an interpretivist approach
is taken to the aggregation of the results from the mixed methods study. This
interpretivist outcome is presented in Chapter 8 of this thesis.
Tashakkori and Teddlie (1998) have described mixed methodology or mixed model
research as having a clear focus on the research question, rather than on the prevailing
discipline paradigm or world view. As a result, mixed model research, used either
sequentially or concurrently, is able to address areas of study that are in their relative
infancy in terms of formal research. Mixed model research is able to break new
ground by validating research conclusions from the differing perspectives of
quantitative and qualitative studies. The intention in this thesis is that three research
strategies are used to triangulate the results on the general research question of “What
are the factors which affect technical innovation by construction industry SMEs?”
The three strategies are literature review, the quantitative methodology of an MCDM
study and the qualitative methodology of descriptive case studies. It is intended that
the three approaches give a multi-faceted view of the research question and permit
somewhat more generalisation from the findings than any of the individual three
strategies may have entailed separately. The three different approaches involve:
‘casting the net widely’ in the literature review to determine the factors to be tested;
undertaking prioritisation of those factors using an anonymous survey of successful
innovators; and illustrating the variety and extent of possible SME technical
innovation strategies via the case studies.
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CHAPTER 4 DECISION MAKING METHODOLOGIE S
Chapter 4 makes the case that the choice of whether or not to introduce an innovation
can be seen as a classic decision making problem. It then analyses the various
methodologies which come under the category of Multi Criteria Decision Making
(MCDM) Models and selects Analytic Hierarchy Process (AHP) as the most
appropriate method for the quantitative section of this study.
4.1 Decision making problems
Rogers (2003 p.168) describes “the innovation-decision process” as comprising of
initial knowledge, the forming of an attitude, the decision to adopt or reject, the
implementation of the innovation and finally, the confirmation of the decision. In
SMEs, this process is often undertaken by an individual who is the chief decision
maker for the firm. In larger firms, the structure of the decision making process may
be much broader. When the organisational structure is multi-faceted and diverse, the
use of decision making methodologies would be inappropriate. In smaller firms,
however, it is quite likely that the choice to invest in change may well be made by one
or two individuals. At both ends of the spectrum, decision making in some form has
long been regarded as being a core skill at the heart of all business management
processes (Arrow and Raynaud 1986; Simon 1957; Simon 1983; Hammond et al.
1999). The making of selections among different courses of action, which may
include the choice of ‘no change’ or maintaining the current position, is definitely a
complex process, but it is not necessarily without structure. Decision making theory
relies on the assumption that all decision makers desire to make rational choices
whether or not they actually achieve this objective (Buede and Maxwell 1995). It is
certainly true that some decision making is ad hoc or unconscious. If this were the
major mode of operation for a business, it would make MCDM unsuitable. Selecting
the highest valued available alternative for a particular set of evaluation criteria,
however, is the goal of the rational decision maker. While this assumption of
rationality cannot be claimed to hold true for all categories of human decision
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making, decision making theory nevertheless represents a methodology for requiring
the decision maker to make any tacit priorities explicit. As such, it introduces some
level of precision and reliability to the assessment of alternative courses of action.
When the decision being considered requires considerable investment of time or
capital most responsible decision makers would aim to have some rational basis for
their choices. As McCoy et al. (2009) have noted that in the last six decades, decision
making research:
“has demonstrated that model-based decision support, can leverage a
decision maker’s intelligence, remove emotional biases and make
tradeoffs that are too complex or too computationally burdensome for
an individual or an organisation to make.”
Furthermore, Weick (2001) noted that decisions made in organisations have public
consequences and, therefore, need to be justified. While this may be less true for
small and medium businesses than it is for large ones, there is nevertheless, a general
requirement for public accountability in decision making, from those individuals who
employ other people, or expend investors’ funds.
Arrow and Raynaud (1986) caution that every decision making problem necessarily
involves two steps: the identification of potential factors; and the processing of that
information. At either stage, approximations may be made that result in inaccuracy.
Indeed, it may not be possible to avoid some level of inaccuracy or inconsistency in
human judgements. It is, therefore, of crucial importance that the methodology
chosen is suitable for the problem being studied. Hammond et al. (1999, p.6)
proposed eight keys to effective decision making. These are:
• Work on the right problem;
• Specify the objectives;
• Create imaginative alternatives;
• Understand the consequences;
• Grapple with the trade-offs;
• Clarify the uncertainties;
• Think hard about risk tolerance;
• Consider linked decisions.
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This represents a structured and systematic evaluation of subjective and unbounded
problems, which the authors call the ProACT approach. It is not intended to make
difficult decisions easy, but rather to give order to the process of solving difficult
problems. Shane (2009) has presented a guide for decision makers looking to pursue
an innovation project in circumstances of uncertainty. The uncertainty may relate to
any or all of the following areas: technical matters; markets; finance; and
competitiveness. The guidelines can be summarised as:
• Focus on high return opportunities;
• Minimise investment in non-salvageable assets;
• Maintain flexibility;
• Re-allocate uncertainty to those better able to deal with it.
It can be seen that the decision maker is expected to juggle conflicting and competing
priorities while maintaining standards of ethical behaviour. The management
decisions faced by construction companies often entail precisely this sort of complex
mixture of competing priorities and values. The study of decision making theory has
the potential to shed new light on the most effective ways of handling such problems.
The problem faced by an SME construction manager who has to decide whether or
not to introduce to the marketplace new products, processes or equipment is likely to
have three characteristics. Firstly, there are likely to be several goals, decision criteria
or attributes that are involved in the problem. Secondly, there is probably conflict
among the various criteria. Thirdly, there are probably incommensurable units
associated with the different criteria. The field of Multi Criteria Decision Making
(MCDM) methods has developed in an attempt to introduce the rigour of a scientific
approach to the assessment of such problems. This is commonly performed by
assigning decision weightings to the relative importance of each criteria and
expressing the problem in a matrix format. There are many specific methodologies
that come under the category of MCDM. Several of these methodologies are
currently being used to support the evaluation of critical economic and social
alternatives in government and industry (Buede and Maxwell 1995). Some have wide
applicability, while others are suitable only in specific circumstances. Some
methodologies are only suitable when attempting to select the best option in a specific
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case, but others are also suitable when the aim is to tease out general deciding factors
and priorities from the collective opinions of a group of experts. This is the option
taken in Chapter 5 of this thesis.
4.2 Multi Criteria Decision Making (MCDM) methodologies
MCDM methodologies can be classified according to the type of data they use
(Triantaphyllou 2002). The data may be deterministic, stochastic or fuzzy and it can
also be combinations of these categories. Deterministic data involves physically
measured quantities. Stochastic data involves statistically or probabilistically
estimated quantities. Fuzzy data involves consideration of uncertainty and
imprecision arising from phenomena which are neither random nor deterministic
(Chen and Hwang 1991; Yoon and Hwang 1995).
MCDM methods can also be classified according to whether they involve individual
or group decisions. This study will concentrate on decisions made by the owner or
principal of an SME construction company, so group MCDM methods are outside the
scope of the thesis. Multi Attribute Decision Making (MADM) methods are a sub
category of MCDM, where the number of alternatives has been predetermined. These
are cases where the most promising alternative needs to be selected from a standpoint
of limited resources. MADM methods include:
• Dominance;
• Maximin;
• Maximax;
• Conjunctive method;
• Disjunctive method;
• Lexicographic method;
• Lexicographic semi-order;
• Weighted Sum Model (WSM) also called Simple Additive Weighting (SAW);
• Weighted Product Model (WPM);
• Technique for Order Preference by Similarity to Ideal Solution (TOPSIS);
• Elimination By Aspect (EBA);
• Elimination et Choice Translating Reality (ELECTRE);
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• Analytic Hierarchy Process (AHP);
• Linear programming techniques for Multi-dimensional Analysis of Preference
(LINMAP).
This list is by no means comprehensive and there are several variations in the
definition and the detailled application of each listed method. Choosing the best
method for a particular MADM problem involves careful analysis of the nature of the
problem and of the kinds of information that is available (Ho 2000).
Chen and Hwang (1991) present three taxonomies of Multi Attribute Decision
Making (MADM) methods derived from earlier work by Hwang and Yoon (1981).
The first is based on the type of information from the decision maker and the salient
feature of that information. The second classifies methods according to the solution
aimed at; either screening or prioritising. The third is based on the data type
involved: Yes-No data; Ranking data; and Numeric data.
The three approaches are summarised in Table 4.1 (p.97) and Table 4.2 (p.98). The
fourteen methodologies listed above will be discussed in terms of their suitabilit y for
addressing particular kinds of problems in construction management. It is not
proposed to reproduce an extensive mathematical basis for each methodology, but
rather to descriptively present the advantages and disadvantages of each as
acknowledged by the principal authors in the field. Illustrative examples from the
construction industry will be suggested of the possible applicability to the
construction industry of each methodology.
4.2.1 Ranking methodologies
The first three methodologies, Dominance, Maximin and Maximax are used when no
information is provided by the decision maker. In other words, they are appropriate
when no pre-conditions are set by the decision maker. All three are non-
compensatory, meaning that each attribute must stand on its own (Yoon and Hwang
1995).
Dominance is a screening methodology which involves ranking data. An alternative
is considered dominated if there is another option which surpasses it in one or more
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attributes and equals it in the remaining attributes. The chosen solution is the one
remaining when all dominated alternatives are discarded.
EXAMPLE: Simple lowest price tender selection for construction projects
operates in a manner similar to this methodology. The lowest price is the
one chosen, provided that other criteria such as predicted construction
time, sureties provided and insurance cover held are not considered
dominated by other bids.
This is a simple and easily understood process, but the disadvantage is that some
screened out alternatives may in fact be better on balance than some of the non-
dominated alternatives. For example, the lowest price may contain errors or
omissions due to the inexperience of the estimator and consequently later problems
may result if this tender is selected.
Maximin relies on the logic of the aphorism ‘a chain is only as strong as its weakest
link’. All attributes must be measured on a common scale. Only one attribute is
considered for a particular alternative and all other attributes are ignored.
EXAMPLE: The strength of a structural steel space frame is dependent on
the weakest structural steel element in the frame, because if one member
fails under load, the frame fails progressively.
There is an inherently pessimistic outlook to this strategy, as it makes decisions on the
basis of the worst case; however especially when safety is involved, such an attitude
may be quite appropriate.
Maximax involves selecting an alternative by its best attribute. The best attribute is
selected for each alternative and the alternative with the maximum overall best value
is chosen. Like Maximin, this method requires commensurable units, numeric data
and only one attribute is chosen to represent an alternative. However, unlike
Maximin, there is an optimistic outlook to this strategy.
EXAMPLE: The finishes selected for a high prestige building may be
chosen on the basis of superior appearance above all other attributes such
as cost, durability and maintenance requirements.
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4.2.2 Cut-off methodologies
Conjunctive and Disjunctive methods are both screening methodologies which
involve cut-off levels and use numerical data. These are sometimes known as
‘Satisficing’ Methods. ‘Satisficing’ is a portmanteau word derived from the
combination of ‘satisfying’ and ‘sufficing’. Coined by Herbert Simon in the 1950s,
the term refers to decision making strategies based on criteria for adequacy rather than
on the identification of the optimal solution (Simon 1957). In the Conjunctive
Method, an alternative which does not meet the minimal acceptable level for all
attributes is rejected.
EXAMPLE: A sub-contractor may be selected based on having passed the
accepted competency certificate levels in a series of skills. Failure to have
a competency certificate in one area outweighs high performance in the
remaining competencies.
Trade-offs between competencies are not allowed and, hence, this is non-
compensatory methodology.
The Disjunctive Method is the mirror image of the Conjunctive Method. A minimum
acceptable level for each attribute is specified. The option chosen is the one which
exceeds the desired performance level by the greatest amount. In other words, the
choice is made on the basis of the best attribute for each option.
EXAMPLE: The members of a project design team may be selected on the
basis of outstanding talent in any one of the following areas: design,
communication skills, technical skills, services integration and
documentation. Team members are not expected to excel in all areas.
The disadvantage of this system is that an option that is good in all categories, but not
outstanding in any, will not be chosen. In other words, the steady, competent all-
rounder is likely to miss out. Once again, this method is non-compensatory.
4.2.3 Prioritizing of alternatives methodologies
The Lexicographic Method and the Lexicographic Semi-order Method are used when
it is necessary to evaluate and prioritise the best option from a series of alternatives.
They are both methodologies that can involve Yes-No data, ranking data or numerical
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data. The Lexicographic Method applies in situations where a single attribute seems
to predominate.
EXAMPLE: When selecting building materials for a low-budget, fully
utilitarian project choose the cheapest option from among the alternatives;
only look at other attributes if price is equal.
Attributes must be ranked in terms of importance and they are considered non-
compensatory.
The Lexicographic Semi-order Method is a slightly more discriminating method. It is
used when one attribute seems to predominate, but bands of imperfect discrimination
are allowed so that one alternative is not chosen simply because of a slightly higher
value on the principal attribute. The attributes must be ranked in terms of importance
and a tolerance value must also be specified for each attribute. This indicates the
difference from the best value which is not considered significant.
EXAMPLE: When selecting building materials choose the cheapest, but
only if cheaper by a specified amount. If the specified amount is not
exceeded, look at the next important attribute, say durability, and compare
the best price within the tolerance options with the standard for durability.
If both are still within the tolerance range move to the next attribute, say
colour range. Continue comparing attributes until a difference outside the
tolerance range is found, and a preferred option can be chosen.
As in the previous methodology, attributes remain non-compensatory.
4.2.4 Scoring methodologies
The next sub-group of decision making methodologies are those that involve some
form of scoring of attributes. In such problems, an alternative in a decision making
problem is viewed as a vector which has multiple elements. Scoring methodologies
aim to transform the vector into an appropriate scalar value so that the alternative with
the highest value or utility can be selected (Yoon and Hwang 1995, p.31). Two
varieties of methodology are based on the decision maker assigning weights to the
attributes. These are Weighted Sum Model (WSM), also called Simple Additive
Weighting (SAW) by some authors (Chen and Hwang 1991), and Weighted Product
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Model (WPM). In the WSM methodology, the overall score of an alternative is
computed via the weighted sum of the attribute values. Each attribute is scored by
multiplying its rating by its importance weighting. The attributes must be capable of
being expressed numerically and they must be comparable. Unlike the previously
mentioned methodologies, trade-off among attributes is compensatory.
EXAMPLE: An item of construction plant or equipment may be chosen by
identifying the important attributes, say capital cost, maintenance cost,
anticipated lifespan and safety rating. These attributes are given a
numerical weighting to reflect their importance to the decision maker. The
possible alternatives are rated for each attribute. The score for each
alternative is the sum of the products of each attribute’s rating multiplied
by its importance weighting.
Weighted Product Method penalises alternatives with some poor attribute values more
heavily than WSM by using the product rather than the sum of the weighted values
across the attributes.
EXAMPLE: If the decision maker for the previous example (the purchase of
plant and equipment) decided that maintenance costs were particularly
important then this priority could be emphasised by scoring the
alternatives for each attribute and multiplying rather than adding each
score to form the end value for each option.
This has the effect of increasing the importance of outlying values for individual
attributes. A low score on an individual attribute has more effect on the outcome
value than it does with WSM.
4.2.5 Elimination methodologies
In Elimination by Aspects (EBA), alternatives are compared one attribute at a time
and are considered eliminated if they fail a Yes–No question or a minimum
acceptable level. Minimum cut-offs are specified for each attribute. Attributes are
ranked in terms of discrimination power and are processed in order until only one
attribute is left.
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EXAMPLE: A construction manager may set up a series of yes-no criteria
for the engagement of a sub-contractor to perform work on an hourly rate
basis: Can you deliver your services at our specified maximum hourly
rate? Can you start at two weeks’ notice? Do you have the required
competency certificates? The available contractors could be screened on
the basis of their answers to the yes-no questions.
The disadvantage of this is that an alternative with one unacceptable attribute will be
screened out, even if it has very high scores in the other attributes.
A development of simple elimination by aspects is Elimination et Choice Translating
Reality or ELECTRE (the acronym is a hybrid translation from the original French
version). This methodology also uses the concept of the outranking relationship.
Pair-wise comparisons of alternatives are made under each criterion separately.
Alternatives are considered dominated if there is another alternative which excels
them in one or more criteria and equals them in the remaining criteria. Choices are
made at the decision maker’s discretion. Even though two alternatives do not
dominate each other mathematically, the decision maker accepts the risk of regarding
one as almost certainly better than the other. The trade-off among attributes is
compensatory and the information contained in the decision making matrix is fully
utilised.
EXAMPLE: A construction manager may be faced with many available
options with regard to selection of a supplier for a common building
material, say pre-mixed concrete. Perhaps he decides that there are only
three important criteria for selection: cost per m³ delivered to site;
capacity of concrete that can be delivered in a given time; and lead time
between order and delivery. By making successive comparisons of the
alternatives and discarding the dominated alternatives, it is possible to
arrive at the likely best option.
This method is particularly useful when there are relatively few criteria and many
alternatives. The consecutive assessment of out-ranking relationships does not
necessarily yield the most preferred alternative. It may only provide a number of
equally rated leading alternatives.
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4.2.6 Ideal solution methodologies
Some decision making processes rely on the presumed existence of an ideal solution
to the problem at hand. An ideal solution is defined as a collection of ideal ratings in
all attributes considered (Yoon and Hwang 1995, p.38). Developed by Hwang and
Yoon (1981) as an alternative to ELECTRE, the Technique for Order Preference by
Similarity to Ideal Solution or TOPSIS uses the rationale that the best alternative is
the one which has the shortest distance to the ideal solution and the farthest distance
from the negative ideal solution. Attributes must be both numerical and comparable.
Trade-off among attributes is compensatory. The method assumes that each criterion
has a one dimensional effect on the utility of the choice.
EXAMPLE: It is possible to describe an ideal or perfect materials
handling system for a construction site. The required performance can be
specified in terms of attributes which all relate directly to cost: initial
capital outlay; running costs; predicted downtime for maintenance and
repair; expected serviceable lifespan etc. The available market options can
then be compared to the ideal solution and its direct opposite, the negative-
ideal solution attribute by attribute. The option with the least distance
from the ideal solution is selected.
In reality, the ideal solution is generally unattainable, but it is often possible to
construct the ideal solution hypothetically and select the available option that is
closest to it.
4.2.7 Weighted comparison methodologies
Developed by Dr. Thomas Saaty over the decades since the 1970s, the Analytic
Hierarchy Process or AHP is a combination of the eigenvector method based on
matrices and the Weighted Sum Method (Golden et al. 1989; Saaty 1977; Saaty 1980;
Saaty 1994a; Saaty 1994b; Saaty 1996; Saaty 2006; Saaty and Vargas 1991; Saaty
and Vargas 1994; Saaty and Vargas 2001).
Some authors have elected to classify AHP as simply a variant of WSM or SAW
(Chen and Hwang 1991), but others see it as sufficiently different in scope to merit
classification as a separate system (Yoon and Hwang 1995). AHP operates by
decomposing a problem into a series of hierarchies and constructs a matrix m x n
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where m is the number of alternatives and n is the number of criteria (Saaty 2006). A
feature of the method is that it is applicable to situations where the criteria are in non-
commensurate quantities. The problem is set up in the form of a Value Tree which
contains criteria and sub-criteria. The decision maker is asked to make pair-wise
comparisons across the range of the selection criteria and across the sub-criteria
sections also. This breaks the problem down into a series of small decisions, which
are then evaluated in matrix format.
EXAMPLE: The selection of heavy plant or equipment for a construction
project involves soft factors such as the manager’s convenience,
operational efficiency, likely progress delays and work safety issues
alongside hard capital and running costs. With AHP, these factors are
given weightings via pair-wise comparisons of each factor on the same
level. This enables the alternative options to be ranked in terms of their
desirability and any internal discrepancies in the weighting are made
apparent and can be debated and decided.
AHP as a research methodology has found an enthusiastic reception in many
discipline areas with refereed journal papers (and special journal issues) published
using the methodology in extensive fields of endeavour. This will be discussed more
fully in Section 4.3 of this chapter.
4.2.8 Alternative preference methodology
LINMAP stands for Linear programming techniques for Multidimensional Analysis of
Preference. The decision maker is required to indicate a preference between
alternatives. This is a much more complex task than choosing between attributes.
This is because multiple factors have to be evaluated at the one time. LINMAP
requires both the assessing of weights for attributes, as well as locating the ideal
solution. The ideal point is assumes to exist in n-dimensional space. Once this ideal
point is located, the alternative with the least distance to the ideal solution is chosen.
EXAMPLE: The credit worthiness of potential joint venture construction
partners could be assessed using LINMAP methodology. This would
involve fuzzy assessment of a number of attributes including reputation,
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project record, known commitments, trustworthiness and insurance cover.
Several judgement calls have to be made in assessing the alternatives.
LINMAP methodology was designed to capture information on reasons for consumer
choice rather than for making a decision. As such, this methodology exceeds the
needs of this study. Similarly, an examination of the growing field of fuzzy data
analysis is beyond the scope of this thesis, because of the imperative to keep the
methodology simple enough to allow inclusion of those decision makers who may be
technically highly competent in their field, but who do not have a great deal of formal
education and who may be intimidated by terminology that appears complex and
esoteric.
Tables 4.1 and 4.2 (p.97 and p.98) summarise the comparison of the decision making
methodologies listed above. For the purposes of this thesis, AHP has been
determined to be the most suitable methodology, because it has the appropriate level
of complexity, it is user-friendly and it is able to deal with problems that have several
competing criteria. A fuller explanation of the selection of AHP methodology is
given in Section 4.3 of this chapter.
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Table 4.1 Comparison of methodologies (Ranking methodologies, cut-off methodologies, prioritising of alternatives methodologies)
Methodology Data type
Information received from the decision maker
Salient feature of information
Compensatory or Non-compensatory attributes
Dominance Yes-No
Rank
Numeric
None Not applicable
Non-compensatory
Maximin Numeric None Not applicable
Non-compensatory
Maximax Numeric None Not applicable
Non-compensatory
Conjunctive method Numeric Information on attributes
Standard level
Non-compensatory
Disjunctive method Numeric Information on attributes
Standard level
Non-compensatory
Lexicographic method
Yes–No
Rank
Numeric
Information on attributes
Ordinal Non-compensatory
Lexicographic semi-order
Yes–No
Rank
Numeric
Information on attributes
Ordinal Non-compensatory
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Table 4.2 Comparison of methodologies (Scoring methodologies, elimination methodologies, ideal solution methodologies, qualitative data methodologies, alternative
preference methodologies)
Methodology Data type
Information received from the decision maker
Salient feature of information
Compensatory or Non-compensatory attributes
Weighted sum model WSM
Numeric Information on attributes
Cardinal Compensatory
Weighted product model WPM
Numeric Information on attributes
Cardinal Compensatory
Elimination by aspects EBA
Yes-No Information on attributes
Ordinal Non-compensatory
ELECTRE Numeric Information on attributes
Cardinal Compensatory
TOPSIS Numeric Information on attributes
Cardinal Compensatory
Analytic Hierarchy Process AHP
Numeric Information on attributes
Cardinal Compensatory
LINMAP Fuzzy Information on alternatives
Pair wise Preference
Compensatory
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Ranking methodologies (Dominance, Maximin and Maximax) are unsuitable for this
exploratory study because they fail to include consideration of all available
information on alternatives. Cut-off methodologies (Conjunctive and Disjunctive
Methods) and Prioritising of Alternatives methodologies (Lexicographic method and
Lexicographic semi-order) are unsuitable for this study because they are non-
compensatory and do not allow trade-off between aspects. Such trade-offs are
desirable in problems that have conflicting criteria. Scoring methodologies (WSM
and WPM) do have the effect of introducing a level of compensation between the
attributes, but they have difficulty in comparing attributes which are measured in
entirely different units. This can be become a case of “adding apples and oranges”
(Triantaphyllou 2002 p.7). Elimination methodologies (Elimination by Aspects and
ELECTRE) are also compensatory, but the effect of one unacceptable attribute may
be to rule out an otherwise well scored alternative. Ideal solution methodology
(TOPSIS) assumes that an ideal solution exists and can be mathematically described.
Furthermore, each alternative has a calculable linear relationship to the preferred
solution. TOPSIS applies to problems where all attributes are numerical and
comparable (Chen and Hwang 1991 p.39), so it is not suitable for this study.
LINMAP requires the decision maker to make comparisons between the available
alternatives rather than between the attributes of those alternatives. As such, it
involves a higher level of discrimination than is needed for this study. This leaves the
Weighted Comparison methodology, AHP, as the option which makes use of all
available information on attributes, incorporates trade-offs and enables comparing of
non-commensurate and non-numerical attributes.
4.3 Selection of AHP methodology
The effectiveness of AHP methodology has led to its current widespread use in
disciplines as disparate as ecology (Ananda and Herath 2008), economics
(Büyüközkan et al. 2008; Shahin and Mahbod 2007), education (Melón et al. 2008),
engineering (Hwang 2004; Wang et al. 2008) manufacturing (Shi et al. 2008; Wang et
al. 2004) and medicine (Ahire and Rana 1995; Liberatore and Nydick 2008). In the
field of property, which is closely related to this research, its use is also widespread
(Ball and Srinivasan 1994; Bender et al. 2000; Chan 2002; Ho et al. 2005; Ho et al.
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2006; Hutchison et al. 2005; Kauko 2003; Ong and Chew 1996; Newell and Seabrook
2006; Schniederjans et al. 1995; Yang and Lee 1997). AHP has been employed to
study various complex decision making areas including: factors which influence
investment decision making; investment strategy; and assessing commercial office
building quality.
Recent years have seen the development of the use of the methodology to address a
wide variety of problems in construction management (Abudayyeh et al. 2007; Al-
Harbi 2001; Al Khalil 2002; Bayazit et al. 2006; Cheng and Li 2004; Cheung et al.
2002; Chung and Skibniewski 2007; Dias and Ioannou 1996; Doloi 2008; El-Sawalhi
et al. 2007; El-Sayegh 2009; Gunhan and Arditi 2005; Lin et al. 2008; Shapira and
Goldenberg 2005; Skibniewski and Chau 1992; Wu et al. 2007). In the construction
management field, AHP has been used to study the areas as diverse as: contractor
selection; site location selection; improving construction productivity; equipment
selection for construction projects; Total Quality Management (TQM); and evaluating
accessibility in buildings.
While the ubiquity of the AHP method is not proof of its efficacy, it is a strong
indication that many scholars have found the methodology useful for the study of
diverse and complex problems. These problems tend to have competing and
conflicting parameters and often the different attributes being evaluated are measured
in units that are incommensurate. AHP represents a systematic method for breaking
down the decision making process into a series of simple pair-wise comparisons. It is
based on a well defined mathematical structure of consistent matrices to generate
approximate weights (Forman and Gass 2001). As such, the problem is given
structure and the degree of discrimination required is reduced, as the decision maker
is only required to consider the relative importance of two attributes at any given
time. The result of the process is a mathematically validated guide to the preferred
option. The methodology is not, however, confined to use in determining a specific
course of action. When the same decision making problem framework in AHP is then
repeated by a number of experts with experience in the issue concerned, the resulting
data can be aggregated and analysed for patterns of agreement and disagreement,
which represent the current collective knowledge on the issue of the sample of experts
chosen. This is the methodology of the study reported in Chapter 5 of this thesis and
analysed in Chapter 6.
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CHAPTER 5 SURVEY OF TECHNICAL INNOVATORS IN CONSTRUCTION SMEs
Chapter 5 reports on the construction of a value tree from the literature review. AHP
methodology is then used in a survey of chief decision makers in SME construction
companies in the Greater Sydney metropolitan area and nearby New South Wales.
The defining qualification for survey participants is some form of peer recognition for
the successful delivery of technical innovations. The statistical characteristics of the
survey group and sub-groups are described.
5.1 AHP Value Tree
It is possible to construct a Value Tree hierarchy for a decision making problem by
several means. Some authors have used individual experts or small numbers of
experts in group discussion to construct the Value Tree for a decision making problem
(Al -Harbi 2001; Al Khalil 2002; Ball and Srinivasan 1994; Cheng and Li 2001; El-
Sayegh 2009; Hwang 2004; Ong and Chew 1996; Schniederjans et al. 1995; Shahin
and Mahbod 2007; Skibniewski and Chao 1992; Yang and Lee 1997). Others have
relied upon the literature of previously published studies to construct a hierarchy for a
research problem (Büyüközkan et al. 2008; El-Sawalhi et al. 2007; Kauko 2003;
Wang et al. 2008). As mentioned at the start of this chapter, the latter approach has
been taken here.
The identified factors discussed in thesis sections 2.8 to 2.12 have been summarised
in a Value Tree presented as Figure 5.1 (overleaf). A Value Tree is a hierarchical
structure that demonstrates simple functional dependence of one element of a system
on another. Such structures are useful as a means of decomposing a complex problem
into its component parts, in order to aid understanding (Saaty 1994a). The Value Tree
presented here is drawn from the targeted literature review and forms the basis of the
empirical study described in this chapter.
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Figure 5.1 Value Tree of factors affecting technical innovation in construction
A Value Tree is an integral part of Decision Analysis. It represents an attempt to
classify and codify relationships between multiple factors in a logical and consistent
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manner. There can always be argument about the content and definition of the Value
Tree elements; however, as a tool for analysing a problem, it has the advantage of
giving form to a problem that may otherwise be considered too large or too complex
to tackle.
5.2 Selection of survey respondents
Purposive sampling techniques (Teddlie and Yu 2007) were used to select suitable
candidates to respond to the research survey for this thesis. The intention was to
identify a select group of successful SME innovators and determine if they had any
commonalities between them. The principal criterion for eligibility to respond to the
survey on factors influencing technical innovation in construction was a verifiable
track record in successfully delivering a significant technical innovation. A
significant technical innovation is defined in these circumstances as one that has
received recognition by peers in the Australian construction industry. The potential
survey respondents were identified from several sources, which included public
databases, industry awards and other peer recognition processes. Two public
databases were used. These were Australian Technology Showcase (ATS) and the
Building Research Innovation, Technology and Environment (BRITE) National
Innovative Contractor Database. The ATS website is maintained by three Australian
state governments (Queensland, New South Wales and Victoria), and is a national
networking program aimed at promoting and developing export markets for
innovative technology based products. In NSW, it is managed through the
Department of State and Regional Development. The website covers products
produced by SMEs from many industries, including more than 80 in construction. To
be eligible, companies must provide two independent referee reports, a current
business plan with a commercialisation strategy and they must demonstrate that their
technology is:
• Clearly innovative;
• Scientifically credible;
• Significantly local in content;
• Commercially attractive;
• Demonstrably marketable and exportable;
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• Socially and environmentally beneficial (ATS 2008).
The BRITE National Innovative Contractor Database was established as a result of a
research project at the Australian Cooperative Research Centre for Construction
Innovation (CRCCI) in response to calls from the construction industry for a ‘Yellow
Pages’ directory of innovative contractors. The purpose of the database is to help
facilitate networking between industry participants and innovative contractors across
Australia (Manley 2006). The database contains more than 80 listings of contractors
and specialist contractors. This database is not restricted to SMEs and in fact contains
many large companies, but there are some SMEs among the identified high
innovators. To qualify, businesses completed a survey dealing with the novelty and
impact of their innovations. Answers were scored and the top 25% of respondents
were included in the database.
A third source of potential interviews was the annual awards lists of professional
organisations and industry umbrella bodies covering the period of 2005 to 2009.
Awards which mentioned innovation, either specifically, or by implication, were
selected. Organisations canvassed were Australian Institute of Building (AIB),
Masters Builders Association of NSW (MBA), Housing Industry Association (HIA),
Engineers Australia, Civil Contractors Federation (CCF) and Panasonic Australian
Business Awards. All awards considered were based on competitive nominations.
They are all awarded after scrutiny and assessment by expert panels to ensure the
integrity of the award process.
Finally, featured inventions from the last five years on the Australian Broadcasting
Commission’s television program “The New Inventors” were also included, if they
involved construction industry contractors. This program undertakes an extensive
screening process for potential featured inventions by experts in the specific field of
endeavour for each invention. The screening experts come from both industry and
academia. Selection of inventions featured on the program is highly competitive.
5.3 Characteristics of survey respondents
After sorting through these four sources of potential survey respondents, a
spreadsheet was assembled of 38 possible eligible interviewees located in an area that
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was within a day’s travel by car of the researcher’s university home campus
(approximately 150 km radius). While this geographic limitation could be seen as
somewhat arbitrary, it should be noted that this region encompasses more than a fifth
of the Australian construction industry by number of enterprises and, as such, may be
regarded as a significant section of the national industry. It is not, of course, a
random sample of the entire Australian construction sector, but this simply limits the
generalisability of the results. It does not invalidate the usefulness of the sample as a
view of opinions in a particular geographic zone.
Checks were then made to ensure that the potential interviewees fitted the category of
SME. Six short-listed companies were removed at this point, as they proved to be
sub-sections or subsidiaries of large construction companies. Another four were
removed, because they were largely manufacturers or suppliers to the construction
industry, rather than contractors operating in the industry. This left 28 possible
interviewees. Of these, 21 completed the survey for a satisfactory response rate of
75%. In every case, the person approached for an interview was the owner, director,
manager or department head with the responsibility for company decision making
which would affect innovation delivery. The sources of the eligible survey
participants are shown in Table 5.1 overleaf. It is worth noting that the highest
response rate from the survey respondent sources was 100% from both the BRITE
Innovative Contractor Database and the New Inventors. These contractors are clearly
engaged in promoting their technical innovations widely. The lowest response rate
was from those potential survey respondents identified from industry awards, but this
rate was still more than half of those approached.
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Table 5.1 Source of survey respondents
Source BRITE
Innovative
contractor
database
Australian
Technology
Showcase
Industry
awards
New
Inventors
Total
Qualified potential
survey respondents 4 10 9 5 28
Completed survey
interviews 4 7 5 5 21
Percentage 100% 70% 56% 100% 75%
The breakdown of the 21 respondents’ company sizes and the nature of their
innovation type are shown in Table 5.2 overleaf. For small businesses, the total
employee number was between 5 and 19 including part-time employees. Medium
businesses had between 20 and 200 employees including part-time employees. This
information was given by the participants and whenever possible confirmed from
other sources such as industry website listings.
Product innovations were concerned primarily with goods or components that are
installed or incorporated in buildings. Process innovations were primarily concerned
with the actions needed for installation or incorporation of goods in a building, or in
other words building techniques. Tidd et al. (2005) describe the difference between
the two as a product consists of “what we offer the world”, while a process consists of
“how we create and deliver that offering” (Tidd et al. 2005 p.23). This is a definition
that is easier to recognise on a case by case basis than it is to describe in the abstract.
In simple terms, building products are things, and building processes are ways of
incorporating these things in buildings. There is some degree of overlap between the
two categories, as new products usually require some new means of installation to
some extent, but all the innovations studied in practice appeared to fall reasonably
clearly into one category or the other. As a point of clarification, the term process
innovator here is taken only to mean those who have delivered a new building process
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or building technique. It does not, for the purposes of this thesis, refer to the broader
area of business process innovation. This is a form of organisational innovation and
is outside the scope of this thesis.
5.4 Patents on technical innovations
A patent can be defined as a government-granted monopoly that precludes others
using an invention for a stated period of years (Shane 2009). Patents are only granted
for inventions that the national Patent Office determines are novel, non-obvious and
useful. The survey respondents stated whether or not they held patents on their
innovation and this was confirmed by checking the Scopus database (Elsevier 2010).
Both Australian and international patents were considered, and most respondents held
multiple patents on their invention. To maintain the confidentiality of the survey
response, patents are not referenced in this thesis, except where the innovation is
discussed in Chapter 7 as a case study. Separate AHP analyses will be carried out to
assess for significant differences between the two groups for each of business size,
innovation type and patent holdings.
Table 5.2 Classification of survey respondents
Business size Innovation type Patents
Small 10 (48%) Product 13 (62%) Patent
holders
14 (67%)
Medium 11 (52%) Process 8 (38%) Non-
patented
7 (33%)
A brief, randomised and non-identifying description of the technical innovations
delivered is shown in Table 5.3 overleaf.
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Table 5.3 Descriptions of innovations studied
Product innovations Process innovations
• Solar powered, rainwater collecting hot water system
• High performance membrane noise barrier for thin wall structures
• Lightweight slate roofing system for domestic roofs
• Weather sealing for temporary repair to storm damage
• Safety guard for floor penetrations during construction
• Under floor rainwater storage bladders
• Eco-friendly replacement for Portland cement
• Temporary formwork for concrete columns
• Interlocking lightweight and waterproof concrete block
• Early warning monitoring system designed to prevent mobile plant roll over
• Road pavement repair and profiling machinery
• Roof tile fixing system
• Evacuated tube solar hot water systems
• Long-span post tensioned steel roof system for column free internal space
• Salt removing poultice to restore masonry building components deteriorating due to rising damp
• Heavy lift tower crane system suitable for restricted sites
• Increased use of recycled concrete as road base and aggregate in civil projects
• Long-span, lightweight, customised roof systems, allowing for double curvature
• Energy efficient heat exchanger air conditioning installations
• Sheet piling for emergency repairs
• Electricity co-generation installations
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5.5 Detailed methodology for survey
In accordance with the procedures of Analytic Hierarchy Process (AHP), survey
respondents were asked to make pair-wise comparisons of the elements in the Value
Tree, which was generated from the literature review in Chapter 2 of this thesis (see
Figure 5.1, p.102). Comparisons were made on a seventeen point scale between 9 at
either end of the scale for extremely preferred element distributed around a neutral
point of 1 where both elements are equally preferred. This is the standard scale
derived by Saaty (1980) and is used in Expert Choice™ software as illustrated in
Figure 5.1. Such pair-wise comparisons were made between each element grouping
in the Value Tree as illustrated in Figure 5.2 below. The system allows for
comprehensive assessment of the different factors and sub-factors identified in the
Value Tree. Each first level factor is compared to all other factors and each sub-
factor (or second level factor) is compared to all others in its own group.
Figure 5.2 Sample survey question
For the Value Tree presented in Figure 5.1, this amounts to 28 pair-wise comparisons
in the format of Figure 5.1 in order to cover all possible combinations among the first
level factors (ten pair-wise comparisons) and among each sub-grouping in the second
level factors (18 pair-wise comparisons). This is illustrated in Figure 5.3 overleaf.
The robustness of the methodology stems from the comprehensiveness of the
judgements made and the level of inbuilt redundancy. The maximum number of sub-
factors in a sub-grouping was five. Consequently, at no stage were respondents asked
to make relative judgements over more than five individual elements, that is, ten pair-
wise comparisons. As such, the quantity of judgements made, is considered well
within the capacity of a competent decision maker.
Thinking of your most successful technical innovation which was more important in assisting the delivery process: Company resources or Client and end-user influences?
Company resources Client and end-user influences 9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
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Figure 5.3 Pair-wise comparisons from the Value Tree
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One of the basic premises of decision making theory was reported by Miller in the
1950s. Miller refers to the “magic number of seven plus or minus two” (Miller 1956).
This represents the contention that most human beings only have the capacity to
discriminate between a limited number of variables at any one time, that being 7±2.
As previously explained, in this study, five is the maximum number of variables that
are contained in any comparative grouping. This is well within an individual decision
maker’s capacity to judge.
Under the standard procedure established by Saaty (1996), an intensity scale of
importance for the numbered comparisons is explained in verbal terms to reduce
variability in answers to the pair-wise comparisons. This is shown in Table 5.4. As
human beings are much more capable of making relative judgements rather than
absolute ones, pair-wise comparisons of the full range of possibilities in each
grouping enables a level of built-in redundancy which assists reliability (Forman and
Selly 2001).
Table 5.4 The fundamental scale verbal descriptions of pair-wise comparisons in AHP
Intensity of Importance Definition Explanation
1 Equal importance Two elements contribute equally to the objective
3 Slightly more importance of one over the other
Experience and judgement slightly favour one element over another
5 Moderate importance of one over the other
Experience and judgement strongly favour one element over another
7 Strong importance of one over the other
An element is strongly favoured and its dominance is demonstrated in practice
9 Absolute importance of one over the other
The evidence favouring one element over another is of the highest possible order of affirmation
2,4,6,8 Intermediate values between the two adjacent judgements
When compromise is needed
Source: Saaty (1996)
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The validity of the AHP method stems from its three primary functions: structuring
complexity; measurement; and synthesis (Forman and Gass 2001). This is the basis
of the method’s broad applicability to the study of many different kinds of decision
making problems. Zahedi (1986) sets out the standard procedure for the use of AHP
in decision making in four steps. These are:
Step 1 Setting up the decision hierarchy by breaking down the
decision problem into a hierarchy of interrelated decision
elements;
Step 2 Collecting input data by pair-wise comparisons of decision
elements;
Step 3 Using the ‘eigenvalue’ method to estimate weights of decision
elements;
Step 4 Aggregating the relative weights of decision elements to arrive
at a set of ratings for potential outcomes.
Each step involves specific procedural protocols to ensure the validity of the collected
data. These are discussed below.
5.5.1 Step 1: The decision hierarchy
A typical hierarchical structure for a decision making problem is presented in Figure
5.4 overleaf. For the purposes of this thesis, the literature review reported in Chapter
3 was used to accomplish Step 1, setting up the hierarchical Value Tree of potential
factors and sub-factors relating to the goal of successful technical innovation delivery
(Figure 5.1). The five factors were selected under the following criteria:
• Each factor needed to be distinctly different from every other factor;
• It needed to be possible to make relative judgements about the importance of
each factor. In other words, fully intangible elements could not be included;
• As far as possible, the factors should cover the items of major significance in
the innovation delivery process, but repetition should be avoided.
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Figure 5.4 General form of a hierarchical structure
Source: Adapted from Saaty (1994a)
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5.5.2 Step 2: Data collection
Data was then collected from the 21 eligible survey respondents to complete Step 2.
This took place over a period of nine months in 2009. All survey respondents
qualified under the criteria set out earlier in this chapter, and no respondents were
added to the eligibility list in an ad hoc manner, or due to ‘word of mouth’
recommendation. Survey respondents were provided with a Participant Information
Sheet and a Participant Consent Form as required by the University of Western
Sydney Ethics Committee under national guidelines for ethical research involving
human beings (see Appendices 2 and 3). All respondents read and signed the consent
form. The data was stored on a laptop computer, backed up on the university network
and in hard copy. According to the university policy, the data was de-identified and
will be retained for a period of five years for verification purposes.
5.5.3 Step 3: Estimates of weightings
Step 3 involves the computation of weighting estimates for each of the factors and
sub-factors in the Value Tree using the standard AHP eigenvalue technique. In the
eigenvalue technique, the reciprocal matrices of pair-wise comparisons are
constructed. Using these pair-wise comparisons, the weighting parameters can be
estimated (Saaty 1980; Forman and Gass 2001). The method recognises that a
common way for human beings to deal with complexity is via the hierarchical
structuring of complexity into groups of relatively homogeneous factors (Forman and
Gass 2001). The method is robust because all possible pairings in a sub-group or
family are investigated. In addition, the methodology contains an in-built check for
internal consistency. This enables a researcher to determine whether or not it may be
necessary to discard some respondents’ answers. This matter will be discussed more
fully in Chapter 7, when the limitations of the study are considered.
In classical AHP methodology, the right eigenvector of the largest eigenvalue of
matrix A (see Equation (1) overleaf) constitutes the estimation of relative importance
of attributes or factors.
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where bi is the importance or desirability of decision element i.
In the AHP approach, the eigenvector is scaled to add up to 1 to obtain the weights.
AHP methodology allows for simple checking of the internal consistency of the
judgements made. It should be noted that the matrix A represented in Equation 1, is a
reciprocal matrix with the diagonal equating to unity, and the right top triangle of the
matrix being equal to the left bottom triangle. Based on the properties of reciprocal
matrices, a consistency ratio (CR) can be calculated. Saaty (1977) has shown that the
largest eigenvalue, , of a reciprocal matrix A is always greater than or equal to n
(number of rows or columns). If the pair-wise comparisons do not include any
inconsistencies, then equals n. The more consistent the comparisons are, the
closer the value of computed to n. A consistency index (CI), which measures
the inconsistencies of pair-wise comparisons is given in Equation (2).
CI = ( - n) / (n -1) (2)
A CR, given in Equation (3), measures the coherence of the pair-wise comparisons.
CR =100(CI / ACI) (3)
where ACI is the average CI of the randomly generated comparisons.
The comprehensive consideration of alternatives, along with checking for
inconsistency, is the basis of the methodology’s robustness.
(1)
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5.5.4 Step 4: Aggregation of results
It is possible to aggregate results via several methods. These include: aggregation
using the arithmetic means of the separate survey responses; aggregation by use of the
median scores for the dataset; and aggregation by use of the geometric mean (Fellows
and Liu 2008). Use of the arithmetic mean for the sample is recommended, whether
the data set is large or small. It is generally the most representative of a series or
distribution. It is necessary, however, to check for outlying responses which may
skew the result. The median response is only suitable when there are few outliers
which affect the overall response. It is not suitable for small numbers of responses.
The geometric mean is suitable for small samples and to assess the relative changes
between responses (Fellows and Liu 2008).
In this case, the arithmetic mean of all the factors and sub-factors is calculated for the
full sample of survey respondents, as well as for sub-groupings within the sample.
Consideration will also be given to the effect of outlying answers in the survey
response. These results are presented in Chapter 6 of this thesis.
5.6 Survey data analysis software
The results obtained from the survey respondents were entered into Expert Choice™
software to enable rapid analysis of the priorities. Expert Choice is the accepted
standard software package for AHP analysis (Zapotera et al. 1997; Ishizaka and Labib
2009). A weighting for each factor was then computed using the ‘eigenvalue’ method
in AHP taking into account each of the pair-wise comparisons as described above.
The data sets were completed for each of the 21 respondents in this way. The
software returns a rating for each factor and sub-factor in decimal form. For
convenience of understanding, the rating factors were converted to percentages and
are presented as such in the results section of this thesis.
5.7 Inconsistency in survey response
The purpose of the study is an exploratory one, and the research aim is to gather
information on the collective experience of the expert respondents. In these
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circumstances, some level of inconsistency is expected and may even be elucidatory
of the complex process undertaken. Consequently, the decision was taken before the
survey commenced, that respondents would not be given the opportunity to address
any inconsistencies in their answers to the AHP survey. Expert Choice™ software
does allow this facility, as ratings are calculated on the spot, and the consistency
ratios can be immediately obtained. If the intention was to select a concrete
alternative, or to establish a decision making model, then it would be appropriate to
allow those respondents with high inconsistency in their answers to opt to amend their
responses. Since neither of these situations applied, it was decided to simply gather
the raw response even if the CR was high.
Inconsistent survey responses may result from several sources. Clerical error is the
simplest and may be, in fact, be the most common source of inconsistency. In the
case of pair-wise comparisons, the reverse of what is intended may be mistakenly
entered, particularly on the 17 point scale. People are also quite likely to respond to
the same questions differently at different times. Concentration level may drop and
the respondent may become distracted. Wikman (2005) has found that greater
inconsistency is likely to occur when people are asked to make judgements as
opposed to providing descriptions. In addition, terminology used in a survey may
have ‘fuzzy boundaries’ either semantically or in terms of specific context. When the
areas being considered are not strictly quantifiable and require judgement, it is highly
unlikely that inconsistency can be completely eliminated. Furthermore, in terms of
this study as it was carried out face-to-face, revealing the inconsistencies to the survey
respondent may have made it more likely that the researcher could influence the
results. Avoiding this possibility was a prime reason why only the raw response was
collected and not a modified response after consideration of the CR (these matters are
further discussed in Section 6.14). As Wikman (2006 p.104) points out, inconsistency
does not result solely from deficiencies in the measuring instrument, but may stem
from the innate uncertainty of human perception. Furthermore, Ganzac (1994) found
that in multi attribute judgements, inconsistency does not increase the level of
‘extremity’ of the judgements or the extent to which they deviate from the mean. In
other words, internally inconsistent results may still give good approximations of true
values (Ganzac 1994 p.193). In particular, the priorities derived from an AHP study
using the eigenvector method are likely to be robust, even when the numerical values
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are less so (Forman and Gass 2001). This is because the method contains enough
redundancy, to make the priorities reliable. As Forman and Gass have put it:
“If consistency does not hold, and in general it does not, error analysis
shows that the eigenvector still produces a set of priorities that are a
very acceptable approximation of the true (unknown in most cases)
values, under the reasonable assumption that the DM is not making
random comparisons” (Forman and Gass 2001).
Putting aside these reservations about consistency, the raw data as provided by the
survey respondents will be analysed for statistical significance using multiple tests as
established by standard statistical techniques.
5.8 ANOVA for sample sub-groups
Analysis of variance (ANOVA) is a statistical method which represents the ratio of
variance between groups to the variance within groups. The larger the between-
groups variance relative to the within groups-variance; that is, the larger the
calculated value of F value, the more likely it is that the mean differences represent
true effects, rather than random ones. In other words, the more likely it is that the
groups studied are distinct populations and not simply variability within an
amorphous group (Fellows and Liu 2008). When performing ANOVA calculations
using tables of the F-distributions and the appropriate degrees of freedom (df), if the
calculated value of F is greater than the critical F value (Fcalc.> Fcrit..), then the null
hypothesis, that there is no significant difference between the groups can be rejected.
In other words, the groups are significantly different. F-tests were carried out for the
three separate sub-group pairs in the survey sample: small and medium enterprises;
product and process innovators; and patent holders and non-patent holders. These
results are presented in Chapter 6 of this thesis.
5.9 Regression and correlation
Regression and correlation are usually considered together when expressing a
relationship between two variables. They can establish that a statistical relationship
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exists, but they do not establish causality. Scatter plots were prepared for each survey
factor against the other factors and the linear regression trend line calculated. The
regression line or the ‘line of best fit’ through the data points, uses the criterion of
least squares. The equations to find this line of best fit are:
(4)
(5)
where: b = slope of the line of best fit (estimate/regression) line
x = values of the dependent variable
y = values of the hypothesised or dependent variable
= mean of the values of x
= mean of the values of y
n = number of data points (pairs of values of the variables x, y)
a = y-intercept
The coefficient of determination measures the strength of a linear relationship
between two variables. It can be calculated directly in Microsoft’s Excel® or other
software such as IBM’s Statistics Package for the Social Sciences (SPSS). It is
calculated using the following equation given overleaf:
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(6)
where: b = slope of the line of best fit (estimate/regression) line
x = values of the dependent variable
y = values of the hypothesised or dependent variable
= mean of the values of y
n = number of data points (pairs of values of the variables x, y)
a = y-intercept
Pearson’s Coefficient of Correlation between two variables is defined as the
covariance of the two variables divided by the product of their standard deviations.
Based on a sample of paired data (Xj, Yj), the sample Pearson’s Correlation
Coefficient is:
(7)
where
v is the sample score
is the sample mean
is the sample standard deviation
The results of this analysis of regression and correlation for the survey data will be
reported in Chapter 6.
5.10 Other information collected at the time of the survey
At the same time as the survey interview, information was collected on the number of
employees at each SME, the nature of the most successful innovation delivered in the
last five years and whether or not patents were held on the innovation concerned.
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Extensive patent searches were later performed to confirm this information. This
information allowed the respondents to be classified as either small or medium-sized
businesses, as either product or process innovators and as patent holders or non-patent
holders (see Table 5.2, p.107). At the end of the survey, the respondents were given
the opportunity to advise of any factors that they considered significant in their own
story and which might be of assistance to others. This information was recorded in
the researcher’s notes. In addition, many of the survey respondents provided the
researcher with technical, trade and promotional material on the nature of their
innovation. Others also offered the opportunity for the researcher to attend
construction sites where the innovation was being currently utilised. A randomised
and de-indentified table showing the respondents’ characteristics is given in Table 5.5
overleaf. These descriptors will be used later in this thesis when quoting from, or
referring to, the open-ended responses given by the survey respondents.
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Table 5.5 Descriptors for survey open-ended comments
Respondent Small or
medium-
sized
company
Product
or process
innovator
Patent holder or
no patent
Descriptor
R1 Medium Product Patent holder R1_M.Prod.Pat
R2 Small Product Patent holder R2_S.Prod.Pat
R3 Medium Product No patent R3_M.Prod.NoPat
R4 Medium Process No patent R4_M.Proc.NoPat
R5 Small Process No patent R5_S.Proc.NoPat
R6 Medium Process No patent R6_M.Proc.NoPat
R7 Small Process Patent holder R7_S.Proc.Pat
R8 Medium Process Patent holder R8_M.Proc.Pat
R9 Medium Product Patent holder R9_M.Prod.Pat
R10 Small Product Patent holder R10_S.Prod.Pat
R11 Small Product Patent holder R11_S.Prod.Pat
R12 Small Product Patent holder R12_S.Prod.Pat
R13 Small Product Patent holder R13_S.Prod.Pat
R14 Medium Process No patent R14_M.Proc.NoPat
R15 Medium Process No patent R15_M.Proc.NoPat
R16 Medium Product Patent holder R16_M.Prod.Pat
R17 Small Product Patent holder R17_S.Prod.Pat
R18 Small Product Patent holder R18_S.Prod.Pat
R19 Medium Process No patent R19_M.Proc.NoPat
R20 Small Product Patent holder R20_S.Prod.Pat
R21 Medium Process No patent R21_M.Proc.NoPat
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5.11 Survey process and time-frame
The survey was conducted between March and December 2009. Interviews were
carried out on a face-to-face basis in the interviewees’ offices at a time that was
convenient to them. Participant consent forms and information sheet pro formas were
provided to the interviewees in accordance with the ethics approval process (copies of
these are included in the Appendices 2 and 3 of this thesis). Each survey interview
took between 30 minutes and one hour. The responses were either entered directly
into a laptop computer by the researcher during the interview or entered by hand onto
a paper version of the survey, depending on the convenience and preference of the
interviewee. Responses from the hard copy surveys were entered into the laptop
immediately after returning from the interview to the researcher’s office.
Initially, it was considered that some surveys could be done via email, but a pilot of
this methodology with two interviewees proved to be unsuccessful, as surveys were
not returned, even after several promptings. Making an appointment and using the
face-to-face format ensured a more inclusive response from the targeted group of
successful SME technical innovators. Because the nature of this study is primarily
exploratory rather than definitive, it was decided to allow for elaboration and
explanation of the terms in the survey during the interview (Suchman and Jordan
1990). The interviewee was informed at the start of the session that it was
permissible to ask questions if the survey terminology was unclear. A list of
synonyms, prompt words and explanations for the terms in the Value Tree was
prepared ahead of the interviews and used if the interviewee queried the terminology,
or hesitated for a significant period before answering. This list is included in Tables
5.6, 5.7, 5.8, 5.9, 5.10 and 5.11 (p.124 to p.127).
Strictly speaking, a survey where this level of interaction between the interviewer and
interviewee is permitted, is open to the charge of the interviewer leading the
interviewee to the desired responses. In order to limit the potential bias introduced by
this procedure, the list was simply used as an aid when respondents had some
definitional difficulty with the terms used. In the great majority of instances, the list
was not necessary and was not used at all. The first column of prompt words was
used on eight occasions and the second column was used only twice in total during
the twenty-eight question survey for the twenty-one interviewees. By far, the
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majority of the interviewees expressed no difficulty with understanding the
terminology or with definitional matters relating to the scope of the terminology.
Table 5.6 Synonyms/prompt words/explanations for Value Tree factors
Value Tree
item
Prompt words if
interviewee hesitates
or asks for
clarification
Examples to be suggested if prompt
words do not assist;
Questions if still unsure
Company
resources
Internal firm resources;
Available slack
resources
Do you ask the question “is a particular
innovation a realistic prospect for your
firm?”
Client and end-
user influences
Influence of project
initiator;
Influence of the
customer
Effect of owners/developers, project
commissioners and users/occupiers;
Essentially this item deals with people
who are outside the construction project
team but may be influential at the start or
the end of the project delivery
Project-based
conditions
Project unknowns;
Issues that arise once a
project has commenced;
On site variability
Construction planning and scheduling
issues; site-based incidents; site accidents
Industry
networks
Relationships external
to your firm; Industry
umbrella bodies; Other
industry players
Partners; Consultants; Collaborators;
Competitors
Regulatory
climate
Authorities; Building
codes; Approvals
systems; Certification
Are the Authority’s you deal with
generally willing to consider new
products or systems?
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Table 5.7 Synonyms/prompt words/explanations for Value Tree sub-factors of company resources
Value Tree
item
Prompt words if
interviewee asks for
clarification
Examples to be suggested if prompt
words do not assist; Questions if still
unsure
Motivation Enthusiasm; Personal
drive; Ability to motivate
others
How significant for innovation is the
personality of the leader?
Available
finance
Effort versus return;
Payback period
Long and short term perspectives;
Venture capital; Was your innovation
funded through borrowing or from
capital resources?
Available
time
Time pressure; Other
priorities in your life
Did your innovation take longer to
deliver than you anticipated?
Available
skill levels
Your own and your
employees’ skills levels;
Tacit knowledge
Skill shortages; Confidence in staff
ability to deliver; Degree of dependence
on individuals
Insurance
and risk
Availability of insurance;
Supportive backers
Does the perception of risk prevent you
developing some possible innovations?
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Table 5.8 Synonyms/prompt words/explanations for Value Tree sub-factors of client and end-user influences
Value Tree
item
Prompt words if
interviewee asks for
clarification
Examples to be suggested if prompt
words do not assist; Questions if still
unsure
Procurement
systems
Contractual relationships;
Tender system; Pre-
qualification systems
Alliances; “Best for project” attitudes;
Does your firm do work for public or
private clients mainly?
Client
characteristics
Experienced or new;
Actively involved or
preferring to delegate
Technical competence of client; How
much do they understand of the
construction process? How useful is
their input?
Table 5.9 Synonyms/prompt words/explanations for Value Tree sub-factors of project-based conditions
Value Tree
item
Prompt words if
interviewee asks for
clarification
Examples to be suggested if prompt
words do not assist; Questions if still
unsure
Supply chain
relationships
Your upstream
associations
Materials suppliers; Plant and equipment
hire firms; Construction product
manufacturers; Labour hire firms
Solving
problems
that occur on
site
Quality assurance
measures; Defects
remediation
Avoiding the cost and time delays
associated with rework; “Get it right
first time”
Improving
OH&S
Construction safety record;
Cost of construction
injuries
Proactively preventing accidents;
Designing out safety hazards
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Table 5.10 Synonyms/prompt words/explanations for Value Tree sub-factors of industry networks
Value Tree
item
Prompt words if
interviewee asks for
clarification
Examples to be suggested if prompt
words do not assist; Questions if still
unsure
Professional
and industry
associations
Building, construction or
specialist organisations
Australian Institute of Building;
Engineers Australia; Association of
Civil Contractors
Research
organisations
and
universities
Testing; Verification;
Developmental research
Commonwealth Scientific Industrial
Research Organisation (CSIRO);
National Association of Testing
Authorities (NATA)
Table 5.11 Synonyms/prompt words/explanations for Value Tree sub-factors of the regulatory climate
Value Tree
item
Prompt words if
interviewee asks for
clarification
Examples to be suggested if prompt
words do not assist; Questions if still
unsure;
Performance-
based
standards
Flexible open-ended
building standards
Building Code of Australia
Local
authority
regulations
Council building approvals
process
Local Council attitudes and processes;
Local building inspectors’ attitudes
Industry
standards
Standard industry practice;
“Business as usual”
Standards Association of Australia
(SAA); “Deemed to satisfy” solutions
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5.12 Face-to-face surveys
As previously mentioned, face-to-face interviews were adopted as the means of
survey delivery because this was speculated as likely to produce a high response rate
from the eligible survey group. This prediction proved to be correct. People who
manage SMEs are almost invariably very busy people with many demands on their
time. The researcher asked for, and made, an appointment with each respondent at
their offices and at a time convenient to the interviewee. This is the reason for the
high response rate for a construction industry survey of 75% of the targeted group.
Survey response rates of between 15 and 20% are considered reasonable by some
researchers in the Australian construction industry (Manley 2005). Those rates
would, however, only be satisfactory for a significantly larger sample size than was
possible in this study. A target response rate of over two-thirds of the eligible
respondents was set and achieved for this study in order to strengthen the validity of
the results because of the small size of the survey target group. As Doloi (2008)
points out, “one of the major advantages of AHP is that the analysis does not always
require a statistically significant sample size” (Doloi 2008 p.842). The
comprehensiveness of the pair-wise comparisons assures the method’s reliability. As
an indication of widespread acceptance of this approach, Table 5.12 overleaf shows
some examples of published AHP studies in several fields that have involved
relatively small, but carefully selected, survey samples.
While a low response rate can invalidate a survey because of the likelihood of sample
bias, it does not necessarily follow that a high rate removes this possibility. The bias
may have been in the selection criteria themselves. It was, therefore, given a high
priority that the qualifications for eligibility be clearly defined and no interviewees
were added to the list in an ad hoc manner. No self-nominations or informal third
party recommendations were accepted.
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Table 5.12 AHP studies based on selected expert samples
Reference Study area AHP sample size
Shapira and Simcha (2009) Construction equipment 19
Doloi (2008)
Construction productivity 19
Kaka et al. (2008)
Construction culture 51
Lam, Lam and Wand (2008)
Quality management 12
Melón, Aragonés Beltran and Carmen González Cruz (2008)
Technical education 14
Newell and Seabrook, (2006)
Property investment 15
Shahin and Mahbod (2007)
Key performance indicators 10
Gunhan and Arditi (2005)
International construction 12
Kauko (2003)
Property valuation 25
Chan (2002)
Property assessment 40
Dias and Ioannou (1996)
Project evaluation 14
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Face-to-face surveys have their own associated potential biases due to the essential
nature of human interaction. As Suchman and Jordan (1990) have explained, there is
often an unresolved tension between the survey interview as an interactional event
and as a neutral measurement instrument (Suchman and Jordan 1990, p.232). The
interviewer may give unconscious indications of the expected answers via body
language, facial expressions and verbal responses to comments made by the
interviewee. The interviewees themselves may be trying to impress, seeking to give
the anticipated ‘correct’ answers or those which will display their companies in the
best light. These possibilities were addressed by assurances that the survey responses
would be de-identified and only data on average responses published at the end of the
survey. Individual responses were not to be reported on in any way that could
identify the original source. In addition, the integrity of the answers was also aided
by the fact that the interviewees were, in fact, the primary experts on their particular
technical innovation and so were unlikely to be intimidated or directed in their
responses by the interviewer. The survey does not deal with matters that are personal,
emotional or which might impinge on the individual’s privacy. Therefore, the
inclusion of a small level of elaboration in the wording of the questions during the
interview can be considered to have no significant effect on the validity of the results.
All of the above quality control measures ensured the integrity of the interview
process and the quality of the survey materials collected.
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CHAPTER 6 ANALYSIS OF FACTORS AFFECTING INNOVATION DELIVERY
Chapter 6 analyses the quantitative results of the AHP survey in order to identify
those factors considered by the expert respondents to be most significant in assisting
the delivery of technical innovations. Recurring themes are reported and evaluated in
the context of SME construction businesses. Sub-groups within the sample are
analysed for significant differences.
6.1 Survey results for the whole sample
The survey response displayed a robust diversity amongst the respondents on
priorities for both the identified factors and sub-factors that influence technical
innovation delivery. Some observations can be made about the raw data responses.
Significantly, none of the identified factors were rejected as irrelevant by a large
number of the respondents. There was scattered support for all factors from at least
some of the respondents and this can be regarded as an indicator of the validity of the
identified factors in the Value Tree. These findings show that there is strong support
for the inclusion of all five factors in the Value Tree as at least some respondents
rated each of the five factors as very important.
Mean weightings and priorities given by the survey respondents for factors and sub-
factors are displayed in Table 6.1 overleaf. Four of the five factors were ranked
closely (ranging within ±0.8% of the mean of the four weights) with only ‘Company
resources’ receiving a significantly lower rating than the others (14.1%). ‘Project-
based conditions’ (22.6%) was the highest ranked factor, albeit by a small margin
from ‘Client and end-user influences’ (22.2%). ‘Regulatory climate’ (21.5%) and
‘Industry networks’ (19.6%) were rated next, followed by ‘Company resources’
(14.2%).
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These AHP results indicate three levels of importance:
• Level 1: project-based conditions and client influences (> 22%),
• Level 2: regulations and networks (< 22% and > 18%),
• Level 3: company resources (< 18%).
Table 6.1 AHP weightings for factors affecting SME technical innovation delivery
Factors Factor weight
Sub-factors Sub-factor weight
Sub-factor rank
1. Project-based conditions
22.6% Improving OH&S 10.4% 3
Supply chain relationships 7.2% 6
Solving problems that occur on site
5.5% 8
2. Client and end-user influences
22.2% Client characteristics 12.4% 1
Procurement systems 5.8% 9
3. Regulatory climate 21.5% Performance-based standards
11.2% 2
Industry standards 4.7% 11
Local authority regulations 4.4 12
4. Industry networks 19.6% Professional and industry associations
9.4% 4
Research organisations and universities
8.2% 5
5. Company resources
14.1% Personal motivation 6.9% 7
Available skill levels 5.3% 10
Available finance 3.9% 13
Available time 3.4% 14
Insurance and risk 1.9% 15
TOTAL 100% 100%
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The first two factors together accounted for nearly 45% of the total factor weightings.
It should be noted that both these factors relate to project-specific matters. These are
matters that do not persist beyond individual construction projects. This is evidence
for the primacy of construction project organisation on construction company
performance. The second pair of factors are related to regulations and networking.
These are matters that persist beyond individual projects and are at least partially
outside the control of the individual SME. The third level, or least important factor,
was found to be matters internal to the firm; that is, its resource base.
The AHP survey of factors found that there was no rejection of any of the individual
factors as insignificant. There was, however, no support for the contention that one or
other of the five factors completely dominates the others in the minds of technical
innovators. It is only possible to indicate a slight preference for the four highest rated
factors over the remaining one, that being ‘Company resources’.
The low weighting for ‘Company resources’ was somewhat unexpected, as there is
much published literature coming from the UK, in particular, which describes this
factor as being of critical importance to construction innovators in small and medium-
sized firms (Abbott et al. 2006; Barrett and Sexton 2006; Sexton and Barrett 2003a;
Sexton and Barrett 2003b; Sexton and Barrett 2004; Sexton et al. 2006). It is said to
be a reason why small businesses are unlikely to deliver innovations at a rate
comparable to large businesses. They are suggested to have too few slack resources
to devote time to innovation. Indeed Schumpeter, the principal founder of innovation
theory in economics, believed that innovation was likely to remain the province of
large businesses for this reason (Schumpeter 1942). The results of this study run
counter to this widely held opinion. The small and medium-sized business operators
in this study did not report that company resources were a significant factor in the
delivery of their innovations. It can be speculated that this is due to the fact that the
survey took place among successful innovators only. These innovators had solved
any potential problems with their resource base, in order to bring their innovation
successfully to market, and therefore, they did not rate the factor highly. It may also
be that the innovators were keen to present themselves and their businesses in the best
light and, consequently, did not wish to admit to any inadequacies in matters relating
to internal company resources. A study amongst potential innovators, or those
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considering embarking on an innovation delivery process, may have given very
different results.
Because of the closeness of the first four factor weightings, confidence levels were
calculated for the average responses. These are illustrated by the 5% error bars in
Figure 6.1. At a 95% confidence level, the top three factors cannot be said to be
markedly different, as illustrated by overlapping error bars.
Figure 6.1 Mean weighting for Value Tree factors with 5% error bars
The major finding on the AHP factor ratings is, therefore, that the survey group of
high performing technical innovators did not rank internal company resources as
important in the delivery of their innovation. This finding is contrary to traditional
innovation theory as delineated by Schumpeter (1942).
6.2 Sub-factor weightings
Sub-factor weightings covered a considerably greater range than the factor
weightings. There was a greater than six-fold difference between the rating of the
highest and lowest rated sub-factor.
This is illustrated by Figure 6.2 with the inclusion of 5% error bars for the sample. At
the 95% confidence level, there is considerable difference between the average
responses on sub-factor weightings.
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Figure 6.2 Mean weighting for Value Tree sub-factors with 5% error bars
The AHP results indicate three levels of sub-factor importance:
• Level 1(major importance): client characteristics, performance-based
standards, improving OH&S, professional and industry associations and
research organisations and universities. (Weighting: > 8%);
• Level 2 (moderate importance): supply chain relationships, personal
motivation, procurement systems, solving problems on site, available skill
levels, industry standards and local authority regulations. (Weighting: > 4%
and <8 %);
• Level 3 (minor importance): available finance, available time and
insurance/risk. (Weighting < 4%).
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These priorities are illustrated as a potential priority model for technical innovation by
SME construction firms in Table 6.2.
Table 6.2 Technical innovation delivery multi-criteria decision-making priority summary
Level Factors Sub-factors Driver/
outcome
First Client and end-user influences
Client characteristics Driver
Regulatory climate Performance-based standards
Driver
Project-based conditions Improving OH&S Driver/
outcome
Industry networks Professional and industry associations
Driver
Industry networks Research organisations and universities
Driver
Second Project-based conditions Supply chain relationships Driver
Company resources Personal motivation Driver
Project-based conditions Solving problems that occur on site
Driver
Client and end-user influences
Procurement systems Driver
Company resources Available skill levels Driver
Regulatory climate Industry standards Driver/
outcome
Regulatory climate Local authority regulations Driver
Third Company resources Available finance Driver
Company resources Available time Driver
Company resources Insurance and risk Outcome
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Table 6.1 (p.132) shows that there was a distinctly greater difference of opinion on
the sub-factors generally when compared with the fairly uniform response to the
factors. The highest ranked sub-factor ‘Client characteristics’ was given a rating of
six times the lowest ranked sub-factor ‘Insurance and risk’. This is a larger difference
than was anticipated. It is mainly accounted for by the relatively low importance
ascribed to the five sub-factors which relate to a company’s resources; in other words,
the internal characteristics of the business arrangements.
The survey of the sub-factors in the Value Tree strongly supported the contention that
client characteristics, as well as performance-based building standards, assist
technical innovation. To a lesser extent, it also found that the assistance of
professional bodies and research organisations was considered by many innovators to
be very important in the delivery process. Each of these findings is useful to the
industry as a whole and to related groups such as building procurers.
Among the sub-factors, ‘Improving OH&S’ (3rd in total priority order) was rated more
highly than previous innovation studies have indicated. It was also regarded as
almost twice as important as the other two ‘Project-based conditions’ sub-factors.
This finding may be related to a recent strong push from both government and large
construction companies to improve the Australian industry performance in this area.
Several individual innovators in this study gave very high priority to OH&S issues
generally, and some reported it as the driving motivation for their innovation.
The sub-factor ‘Client characteristics’, was regarded as twice as important as
‘Procurement systems’, which was the other factor in its sub family. This is a
surprising result as it indicates that personal factors to do with the clients’ choices,
their competence or their behaviour outweigh contractual and legal issues in the
minds of the innovators surveyed. As this matter was not raised in any of the
informal comments at the end of the survey, any explanations offered are necessarily
speculative. It may be that the personal factors are exaggerated in some
circumstances and these occasions are likely to be remembered when reflecting on
past experience for this survey. It is not possible to determine from the data collected
whether or not this is so.
‘Professional and industry organisations’ and ‘Research organisations and
universities’ were given fairly similar ratings by the survey respondents with the
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former being only slightly favoured over the latter. It is possible that different kinds
of technical innovation focus either on verification by independent testing, or
verification by acceptance of the innovation within the industry. The first group
would place more importance on universities and the second on industry
organisations. This is a matter for further investigation.
Finally, ‘Performance-based standards’ were regarded as twice as important as the
other two sub-factors relating to the ‘Regulatory climate’. This indicates strong
support from the innovators for the move towards performance-based regulation of
building.
6.3 Sub-groups within the overall sample
The AHP survey data was also sorted to display the responses of the sub-groups in the
sample: small versus medium businesses; product versus process innovations; and
patent holders versus non-patent holders. The results for small versus medium are
displayed in Table 6.3 overleaf; product versus process innovation in Table 6.4
(p.144); and those for patent holders versus non-patent holders in Table 6.5 (p.144).
The sub-groups were not equal in numbers: ten small versus eleven medium-sized
businesses; thirteen building product innovators versus eight building process
innovators; and fourteen patent holders versus seven non-patent holders. Some
significant differences between the mean responses at 95% confidence level were
noted and these have been listed in the last column of Tables 6.3, 6.4 and 6.5.
6.4 Small versus medium business results
The average responses for both small and medium enterprises in the sample are
considerably less uniform than the average responses for the whole group. This is an
indicator that significant differences exist between the two groups. All five factors
and fourteen of fifteen sub-factors were given different priority ranks by the two
groups.
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Table 6.3 AHP weightings: small versus medium-sized businesses
Weights
Small
businesses Factor rank
Medium businesses
Factor rank
Sig.
Factors
Company resources 12.5% 5 15.5% 5 Yes
Client and end-user influences 27.0% 1 19.5% 3 Yes
Project-based conditions 17.7% 4 25.6% 1 Yes
Industry networks 18.6% 3 20.5% 2 No
Regulatory climate 24.4% 2 18.9% 4 Yes
Sub-factors
Personal motivation 4.5% 12 7.9% 5 Yes
Available finance 4.1% 13 3.3% 13 Yes
Available time 3.5% 14 2.7% 15 Yes
Available skill levels 4.6% 11 5.4% 10 Yes
Insurance and risk 0.7% 15 3.0% 14 Yes
Procurement systems 5.8% 6 = 5.7% 8 No
Client characteristics 15.8% 1 8.8% 4 Yes
Supply chain relationships 5.3% 9 7.8% 6 Yes
Solving problems that occur on site 5.8% 6 = 5.5% 9 No
Improving OH&S 7.7% 5 13.6% 1 Yes
Professional and industry associations 8.2% 4 11.9% 2 Yes
Research organisations and universities 10.5% 3 7.4% 7 Yes
Performance-based standards 13.1% 2 10.2% 3 Yes
Industry standards 4.9% 10 4.2% 11 Yes
Local authority regulations 5.8% 6 = 3.6% 12 Yes
Significance is taken here to represent significant difference between means of small and medium-sized business factor/ sub-factor weights allowing for 5% error.
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As a general observation, it can be seen that ‘Client and end-user influences’ is rated
much more importantly by small companies than it is by medium-sized companies.
This probably reflects the relative importance of an individual client to a small
business. Conversely, medium-sized businesses rate ‘Project-based conditions’ much
more importantly than do small businesses. This may indicate that the medium-sized
businesses are involved in more complex projects where site conditions assume more
significance. On the other hand, there is little difference in the average response of
the two groups on ‘Industry networks’. Both small and medium businesses in the
survey on average see industry networks as important, but not critical, to their
innovation delivery process. Figure 6.3 illustrates the differences between the two
groups’ averages on factors along with 5% error bars.
Figure 6.3 Bar chart of small and medium-sized business average response on factors with 5% error bars
Some useful points can be noted here. Although the average difference between the
groups on the factor ‘Industry networks’ is not significant, there are sub-factor
averages relating to this factor which do contain significant differences. The inverted
priority between small and medium businesses, on the factors ‘Client and end-user
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influences’ and ‘Project-based conditions’, has already been commented upon. It may
be a result of differing levels of reliance on individual clients and differing positions
in the contractual hierarchy.
Curiously, ‘Company resources’ is rated as more important by medium-sized
businesses than by small. The literature would tend to indicate that that this should be
reversed (Abbott et al. 2006; Barrett and Sexton 2006; Sexton and Barrett 2003a). It
may be that the medium-sized businesses in the survey are generally engaged in larger
contracts and, therefore, more pressed for resources. This response may also be due
to the larger wage and salary commitments of the medium-sized businesses.
The sub-factors exhibit a greater degree of difference in average response than the
factors do (Tables 6.11 p.159 and 6.12 p.161). Thirteen of fifteen sub-factors exhibit
significant differences between the two groups. There is reasonably close agreement
between the two groups on ‘Procurement systems’ and ‘Solving problems that occur
on site’. Otherwise, there is considerable disagreement in the ratings derived from the
average response. The four largest differences are on ‘Client characteristics’,
‘Improving OH&S’, ‘Personal motivation’ and ‘Professional and industry
associations’.
Individual clients are proportionately more important to small businesses than to
medium-sized businesses, as they are likely to represent a greater proportion of
income for the small business. Indeed, sometimes small businesses may be very
dependent on one or two individual clients, and therefore, they can be very vulnerable
to changes of opinion by their important clients. Medium-sized businesses are less
likely to be in this situation, because their size is likely to mean that they have a
spread of potential clients.
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Figure 6.4 Bar chart of small and medium-sized business average response on sub-factors with 5% error bars
The next biggest difference between the two groups was on ‘Improving OH&S’,
where medium-sized businesses gave this sub-factor considerably higher priority.
This may be evidence of medium-sized companies taking up the push towards
improving industry performance on OH&S which has in recent years been driven by
government and by large companies in the Australian construction industry.
Medium-sized businesses are possibly more likely to be engaged as sub-contractors
on large projects for government clients or where the head contractor is one of the top
200 industry enterprises. Consequently, the medium sized business manager may be
more aware of OH&S as a driver of industry change. Since medium sized businesses
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employ more people, they also have more vulnerability to be liable for the cost of
injury and death on construction sites.
It is unclear why ‘Personal motivation’ should be seen as more important by medium-
sized businesses than by small ones. Generally, this researcher has observed a high-
level of personal motivation among those respondents at both levels of business size.
It may be that for small businesses ‘being a self-starter is a given’ (comment by
R13_S.Prod.Pat), and consequently, they failed to rate the attribute highly. It is
simply considered a prerequisite for running a small business in a competitive
industry like construction.
It is also somewhat difficult to explain why medium-sized businesses in the sample
rated ‘Professional and industry associations’ much more importantly than small
businesses. It may be that, for this sample, the kinds of services and opportunities
currently provided by professional organisations are more closely geared to the needs
of medium-sized businesses. This is a potential area for future research.
6.5 Building product versus building process innovators
The second pair of sub-groups in the sample is product innovators compared to
process innovators. As the term implies, product innovators have generated a distinct
physical product, either a building component or a piece of plant or equipment for use
on construction projects. Process innovators on the other hand have developed a new
or substantially different construction process which is not bounded by an individual
building component. The average responses for both groups in the sample are, once
again, considerably less uniform than the average responses for the whole group.
This is an indicator that significant differences exist between the two groups. All five
factors and eleven of fifteen sub-factors were given different priority ranks by the two
groups.
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Table 6.4 AHP weightings: product versus process innovators
Weights
Product innovators
Factor rank
Process innovators
Factor rank
Sig.
Factors
Company resources 13.0% 5 15.9% 4 Yes
Client and end-user influences 25.1% 1 19.8% 2 Yes
Project-based conditions 17.2% 4 29.3% 1 Yes
Industry networks 22.0% 3 15.6% 5 Yes
Regulatory climate 22.8% 2 19.5% 3 Yes
Sub-factors
Personal motivation 4.9% 11 8.5% 4 Yes
Available finance 4.2% 13 2.9% 13 Yes
Available time 2.3% 14 4.4% 12 Yes
Available skill levels 5.0% 10 5.1% 10 No
Insurance and risk 2.2% 15 1.4% 15 Yes
Procurement systems 5.4% 9 6.2% 8 Yes
Client characteristics 13.7% 1 9.5% 3 Yes
Supply chain relationships 5.5% 8 8.3% 6 Yes
Solving problems that occur on site 5.7% 6 = 5.6% 9 No
Improving OH&S 8.0% 5 15.3% 1 Yes
Professional and industry associations 11.2% 3 8.4% 5 Yes
Research organisations and universities 10.1% 4 6.9% 7 Yes
Performance-based standards 12.2% 2 10.5% 2 Yes
Industry standards 5.7% 6 = 2.6% 14 Yes
Local authority regulations 4.7% 12 4.5% 11 No
Significance is taken here to represent significant difference between means of product and process innovator factor/ sub-factor weights allowing for 5% error.
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As can be seen from Table 6.4, process innovators rated ‘Project-based conditions’
much more highly than product innovators did. For product innovators, ‘Client and
end-user influences’ were rated most important of the five factors. This confirms
anecdotal impressions of the two groups. Building process innovators are more likely
to be head contractors or major sub-contractors. As a result, they are often driven by
solving problem situations that occur during the delivery of construction projects
(Slaughter 1993a; Slaughter1993b). They are more likely than product innovators to
have supervision responsibility for other participants in the construction project
delivery process. In other words, they are more likely to be ‘integrators’ and problem
solvers. Product innovators, on the other hand, are likely to be more dependent on a
sympathetic attitude from project funders who may opt for the conservative approach
and be unwilling to try anything new. Consequently, product innovators rate the
client or the end-user as being of critical importance in the delivery of their
innovation.
The differences on average between product and process innovators in the sample
were significant for each of the five factors as can be seen in Figure 6.5 (overleaf)
where error bars for 5% value are shown. The average differences between product
and process innovators are greater than for either of the other pairs of sub-groups in
the sample. This is a somewhat unexpected finding. Small and medium-sized
businesses were expected to exhibit the biggest differences between the sub-groups as
the unique position of small businesses has been much reported (Abbott et al. 2006;
Barrett and Sexton 2006; Sexton and Barrett 2003). It may be that for this sample, it
is the level of project integration which the innovator has responsibility that is the
critical factor in revealing the story of how technical innovation is delivered. This is a
suitable area for future research.
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Figure 6.5 Bar chart of product and process innovators average response on factors with 5% error bars
A similar attitude can be seen to be confirmed by the ratings given to the fifteen sub-
factors by each group. Product innovators once again saw the ‘Client characteristics’
as easily the matter of most importance. This indicates their dependence on the client
opting for a change from standard practice in the adoption of an innovative product.
Clients would probably have more say in the selection of products than they would in
the adoption of innovative processes, as this may be decided by the builder or head
contractor.
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Figure 6.6 Bar chart of product and process innovators average response on sub-factors with 5% error bars
Process innovators, however, rated ‘Improving occupational health and safety’ as
being the sub-factor of the highest level of importance and this was considerably more
important to them than to product innovators. The process innovators in the sample
were more likely to have responsibility for integrating the construction process and
consequently, they were more likely to see construction safety as of prime importance
to their innovative process solutions.
It is unclear why process innovators rated personal motivation considerably higher
than did product innovators. It may be that the delivery of a new building process
requires more negotiation and the convincing of other players in the project delivery
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system and consequently, the process innovators are more dependent on personal
drive to manage this negotiation.
For the sub-factors ‘Research organisations and universities’ as well as ‘Industry
standards’, product innovators were considerably more enthusiastic than process
innovators. It could be that once again this is about the need to convince the
appropriate people of the value of a new product or process. Independent verification
and the attitude of competitors both seem to be more important for product
innovators.
The bar chart for the sub-factors averages (Figure 6. 6) illustrates the significant
differences between product and process innovators on eleven of the fifteen factors.
This is an indication that they may represent quite distinct populations within the
sample.
6.6 Patent holders versus non-patent holders
The third pair of sub-groups in the sample was patent holders compared with non-
patent holders. The sample contained fourteen patent holders and seven respondents
who did not hold patents on their innovation. Three of five factors and fourteen of
fifteen sub-factors were given different priority ranks by the two groups. As Table
6.5 illustrates, patent holders rated ‘Client and end-user influences’ much higher than
did non-patent holders. This is further support for the need for open-minded
individuals funding projects when new and innovative solutions are proposed. Other
than on this factor, there were few notable differences between the two groups on
factors. There was little difference in the average responses on ‘Company resources’
or ‘Industry networks’ between the two groups. The group differences on the factors
of ‘Project-based conditions’ and ‘Regulatory climate’ were minor.
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Table 6.5 AHP weightings: patent holders versus no patents
Weights
Patent holders
Factor rank
Non-patent holders
Factor rank
Sig.
Factors
Company resources 14.5% 5 13.2% 5 No
Client and end-user influences 25.1% 1 19.0% 4 Yes
Project-based conditions 20.5% 3 24.5% 1 Yes
Industry networks 19.5% 4 19.7% 3 No
Regulatory climate 20.5% 2 23.7% 2 Yes
Sub-factors
Personal motivation 6.0% 6 = 6.9% 7 Yes
Available finance 4.1% 12 2.9% 13 Yes
Available time 3.8% 14 1.5% 15 Yes
Available skill levels 4.9% 10 5.3% 9 = No
Insurance and risk 1.4% 15 2.7% 14 Yes
Procurement systems 6.0% 6 = 5.2% 11 Yes
Client characteristics 13.6% 1 9.2% 4 Yes
Supply chain relationships 5.9% 8 7.9% 5 Yes
Solving problems that occur on site 5.8% 9 5.3% 9 = No
Improving OH&S 10.0% 3 12.2% 2 Yes
Professional and industry associations 9.3% 5 11.8% 3 Yes
Research organisations and universities 9.6% 4 7.4% 6 Yes
Performance-based standards 11.1% 2 12.6% 1 Yes
Industry standards 4.0% 13 5.5% 8 Yes
Local authority regulations 4.5% 11 4.9% 12 No
Significance is taken here to represent significant difference between means of patent holders and non-patent holder’s factor/ sub-factor weights allowing for 5% error.
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Figure 6.7 Bar chart of patent holders and non-patent holder’s average response on factors with 5% error bars
On sub-factors, as displayed in Table 6.5, there were generally fewer significant
differences on average than for the other two sub-group pairs. Only the sub-factor
‘Client characteristics’ revealed a fairly large difference on average. This is a similar
result to the one for the factor ‘Client and end-user influences’ and probably stems
from the same source. The bar chart illustrated in Figure 6.7 shows the relatively
minor differences in average response to the survey by patent holders and non-patent
holders. This is a somewhat unexpected finding as patent holders are generally
regarded as very unusual in the construction industry. Compared to the
manufacturing sector, the construction industry generates relatively few patents. As a
result, it might be expected that the patent holders in the sample would form a
distinctly different group. However, as all the respondents were selected on the basis
of having achieved peer recognition as a significant innovator, it is likely that the
whole sample represents a distinctly different group from the average construction
company rather than the patent holders being specially delineated.
Minor differences were noted on ‘Personal motivation’, which was rated more highly
by process innovators than by product innovators. This may be due to the higher
level of integration and communication skills needed by those delivering innovations
that may require other parties in the construction process to change their standard
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practices. Conversely ‘Research organisations and universities’ were more important
on average to product innovators than they were to process innovators. This
difference may relate to the need for independent testing of products before their
delivery in the marketplace.
Figure 6.8 Bar chart of patent holder’s and non-patent holder’s average response on sub-factors with 5% error bars
In general, the average responses of these two groups on sub-factors does not exhibit
large enough difference to be confident that these are two distinct groups as opposed
to one group without distinctly different characteristics.
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6.7 Preliminary results summary
Generally, the preliminary descriptive analysis of the three pairs of sub-groups in the
sample has revealed that there may be significant differences between product and
process innovators on the factors that assist their innovation delivery. Similarly,
while the results demonstrate that there may be some important differences between
small and medium-sized businesses, these are generally less than was anticipated
before the survey was undertaken. Only minor differences between patent holders
and non-patent holders in the survey response were exhibited.
It is also noteworthy that all of the ten small businesses in the sample were patent
holders, while only four of the eleven medium-sized businesses held patents. This
indicates that the protection afforded by a patent may be critical for small business
technical innovation delivery. This would particularly be likely in the establishment
phase of the innovation delivery.
So far, the analysis of the sub-group response has looked only at the difference
between the group means. Statistical tests are available to more closely examine both
variance and correlation within the data set of group responses.
6.8 ANOVA
The analysis of variance (ANOVA) concept starts from the premise that the
individual items of information being studied are not all the same and may vary
according to a significant pattern (Black 2008 p.409). One-way ANOVA can be used
to compare the relative sizes of the total variation in the group to the error variation
(which is due to individual differences within the group). ANOVA was completed in
Statistical Package for the Social Sciences (SPSS) for each of the three pairs of
identified sub-groups in the sample against each of the factors and sub-factors. This
test can be expressed as:
Along with consideration of degrees of freedom, the calculated F value can be
compared with critical F values for 0.05 probability. If the calculated F value exceeds
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the critical value for a particular treatment, then the null hypothesis is rejected and the
variances between the samples are significant. Tables 6.6, 6.7 and 6.8 reveal the
ANOVA results for the five factors for each of three sub-groups: small versus
medium-sized companies; product innovators versus process innovators; and patent
holders versus non-patent holders.
Table 6.6 Results from ANOVA on factors by company size
Small versus medium-sized companies
Sum of Squares df
Mean Square F Sig.
Company resources
Between Groups
47.114 1 47.114 0.330 0.572
Within Groups 2710.058 19 142.635
Total 2757.172 20
Client and end-user influence
Between Groups
425.572 1 425.572 2.239 0.151
Within Groups 3610.790 19 190.042
Total 4036.363 20
Project-based conditions
Between Groups
459.710 1 459.710 1.887 0.186
Within Groups 4629.901 19 243.697
Total 5089.611 20
Industry based networks
Between Groups
23.582 1 23.582 0.106 0.748
Within Groups 4218.720 19 222.038
Total 4242.303 20
Regulatory climate
Between Groups
155.792 1 155.792 0.439 0.515
Within Groups 6739.674 19 354.720
Total 6895.467 20
Where df represents the degree of freedom for the sample and Sig. represents the calculated
significance level.
No significant differences compared with F Critical of 2.970 (Black et al. 2009).
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Table 6.7 Significant results from ANOVA on factors by innovation type
Product versus process innovators Sum of Squares df
Mean Square F Sig.
Company resources
Between Groups
42.176 1 42.176 0.295 0.593
Within Groups 2714.996 19 142.895
Total 2757.172 20
Client and end-user influence
Between Groups
79.391 1 79.391 0.381 0.544
Within Groups 3956.972 19 208.262
Total 4036.363. 20
Project-based conditions
Between Groups
591.927 1 591.927 2.501 0.130
Within Groups 4497.684 19 236.720
Total 5089.611 20
Industry based networks
Between Groups
206.400 1 206.400 0.972 0.337
Within Groups 4035.903 19 212.416
Total 4242.303 20
Regulatory climate
Between Groups
56.090 1 56.090 0.156 0.697
Within Groups 6839.377 19 359.967
Total 6895.467 20
Where df represents the degree of freedom for the sample and Sig. represents the calculated
significance level.
No significant differences compared with F Critical of 2.970 (Black et al. 2009).
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Table 6.8 Significant results from ANOVA on factors by patent
Patent holders versus no patents Sum of Squares df
Mean Square F Sig.
Company resources
Between Groups
8.961 1 8.961 0.062 0.806
Within Groups 2748.211 19 144.643
Total 2757.172 20
Client and end-user influence
Between Groups
111.394 1 111.394 0.539 0.472
Within Groups 3924.969 19 206.577
Total 4036.363 20
Project-based conditions
Between Groups
38.477 1 38.477 0.145 0.708
Within Groups 5051.134 19 265.849
Total 5089.611 20
Industry based networks
Between Groups
0.174 1 0.174 0.001 0.978
Within Groups 4242.129 19 223.270
Total 4242.303 20
Regulatory climate
Between Groups
48.000 1 48.000 0.133 0.719
Within Groups 6847.466 19 360.393
Total 6895.467 20
Where df represents the degree of freedom for the sample and Sig. represents the calculated
significance level.
No significant differences compared with F Critical of 2.970 (Black et al. 2009).
As can be seen from Table 6.7, only one of the five factors demonstrated significant
difference between the product and process innovator respondents in the ANOVA
test. The ‘Project-based conditions’ factor was significantly more important to
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process innovators than to product innovators. This is a reasonably expected result, as
process innovators are likely to be more involved with the detailed delivery of their
technical innovation on site. Product innovators may or may not be so involved,
depending on whether they are heavily involved in the product’s on-site installation.
The ANOVA results for the other two pairs of sub-groups revealed no significant
differences on factors affecting technical innovation (Tables 6.6 and 6.8). This is, in
itself, an interesting result. A possible interpretation may be that the sample
represents a reasonably coherent group of high-level innovators in construction
SMEs. The characteristic for which they were selected, that is, successful delivery of
a high-level technical innovation, would appear to dominate other differences within
the group. Company size, technical innovation type and whether or not they hold
patents on their particular innovations, all appear to have less impact on their ratings
of the factors that affect technical innovation delivery, than does their membership of
the group overall. Since successful delivery of a technical innovation by a
construction SME is still a comparatively rare event, it is perhaps unsurprising that
this fact dominates other company characteristics. It was never anticipated that these
firms represented typical construction firms. Indeed, they were chosen for an
achievement which is atypical. The lack of differentiation by sub-group can be said
to give more weight to the priorities and weights of the overall sample, as listed in
Table 6.1.
ANOVA tests were also performed for each of the fifteen sub-factors by the three
pairs of identified sub-groupings. These results are given in Tables 6.9, 6.10 and
6.11. For 95% confidence, the F Critical value should be 2.970 (Black et al. 2009).
No calculated value of F exceeded this figure. Therefore, no significant differences
were found, so the null hypothesis must be retained. In other words, the proposed
sub-groups do not represent two distinct populations within the sample. As with the
ANOVA tests for factors, it should be concluded that membership of the survey group
of high-level technical innovators dominates membership of the potential sub-groups
based on company size, innovation type and patent holding. This supports the
validity of the sub-factor priorities given in Table 6.1, as being an accurate reflection
of high-level technical innovator group opinion. Further statistical tests were carried
out in order to search out patterns in the data set and these are reported in the next
section of this chapter.
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Table 6.9 Results from ANOVA on sub-factors by company size
Small versus medium-sized companies Sum of Squares df
Mean Square F Sig.
Personal motivation
Between Groups 40.060 1 40.060 1.084 0.311 Within Groups 701.963 19 36.945 Total 742.023 20
Available finance Between Groups 1.955 1 1.955 0.128 0.725 Within Groups 291.305 19 15.332 Total 293.260 20
Available time Between Groups 3.414 1 3.414 0.195 0.663 Within Groups 331.878 19 17.467 Total 335.291 20
Available skill levels
Between Groups 3.609 1 3.609 0.124 0.729 Within Groups 554.621 19 29.191 Total 558.230 20
Insurance and risk
Between Groups 23.381 1 23.381 2.698 0.117 Within Groups 164.646 19 8.666 Total 188.027 20
Procurement Between Groups 8.424 1 8.424 0.205 0.656 Within Groups 781.201 19 41.116 Total 789.626 20
Client characteristics
Between Groups 240.593 1 240.593 2.721 0.115 Within Groups 1680.187 19 88.431 Total 1920.780 20
Supply chain relationships
Between Groups 26.347 1 26.347 0.574 0.458 Within Groups 871.903 19 45.890 Total 898.250 20
Solving problems on site
Between Groups 0.124 1 0.124 0.007 0.933 Within Groups 323.574 19 17.030 Total 323.698 20
Professional and industry organisations
Between Groups 191.209 1 191.209 1.303 0.268 Within Groups 2788.800 19 146.779 Total 2980.010 20
Research organisations and universities
Between Groups 72.310 1 72.310 0.933 0.346 Within Groups 1473.308 19 77.543 Total 1545.618 20
Improving OH&S
Between Groups 44.801 1 44.801 0.521 0.479 Within Groups 1633.748 19 85.987 Total 1678.550 20
Performance-based standards
Between Groups 40.509 1 40.509 0.260 0.616 Within Groups 2955.278 19 155.541 Total 2995.787 20
Industry standards
Between Groups .118 1 .118 .005 .942 Within Groups 407.365 19 21.440 Total 407.483 20
Local authority regulations
Between Groups 27.165 1 27.165 .355 .558 Within Groups 1452.127 19 76.428 Total 1479.291 20
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Table 6.10 Results from ANOVA on sub-factors by innovation type
Product versus process innovators Sum of Squares df
Mean Square F Sig.
Personal motivation
Between Groups 47.092 1 47.092 1.288 0.271 Within Groups 694.931 19 36.575 Total 742.023 20
Available finance Between Groups 5.888 1 5.888 0.389 0.540 Within Groups 287.372 19 15.125 Total 293.260 20
Available time Between Groups 21.601 1 21.601 1.308 0.267 Within Groups 313.691 19 16.510 Total 335.291 20
Available skill levels
Between Groups 0.150 1 0.150 0.005 0.944 Within Groups 558.080 19 29.373 Total 558.230 20
Insurance and risk
Between Groups 4.335 1 4.335 0.448 0.511 Within Groups 183.692 19 9.668 Total 188.027 20
Procurement Between Groups 0.196 1 0.196 0.005 0.946 Within Groups 789.430 19 41.549 Total 789.626 20
Client characteristics
Between Groups 80.769 1 80.769 0.834 0.373 Within Groups 1840.011 19 96.843 Total 1920.780 20
Supply chain relationships
Between Groups 31.358 1 31.358 0.687 0.417 Within Groups 866.891 19 45.626 Total 898.250 20
Solving problems on site
Between Groups 0.015 1 0.015 0.001 0.976 Within Groups 323.683 19 17.036 Total 323.698 20
Professional and industry organisations
Between Groups 34.904 1 34.904 0.439 0.515 Within Groups 1510.168 19 79.483 Total 1545.072 20
Research organisations and universities
Between Groups 48.542 1 48.542 0.566 0.461 Within Groups 1630.008 19 85.790 Total 1678.550 20
Improving OH&S
Between Groups 269.925 1 269.925 1.892 0.185 Within Groups 2710.084 19 142.636 Total 2980.010 20
Performance-based standards
Between Groups 5.203 1 5.203 0.034 0.857 Within Groups 2943.155 19 154.903 Total 2948.358 20
Industry standards
Between Groups 35.031 1 35.031 1.787 0.197 Within Groups 372.452 19 19.603 Total 407.483 20
Local authority regulations
Between Groups 0.185 1 0.185 0.002 0.962 Within Groups 1479.106 19 77.848 Total 1479.291 20
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Table 6.11 Results from ANOVA on sub-factors by patent holding
Patent holders versus no patent Sum of Squares df
Mean Square F Sig.
Personal motivation
Between Groups 0.857 1 0.857 0.022 0.884 Within Groups 741.166 19 39.009 Total 742.023 20
Available finance Between Groups 5.794 1 5.794 0.383 0.543 Within Groups 287.466 19 15.130 Total 293.260 20
Available time Between Groups 24.994 1 24.994 1.530 0.231 Within Groups 310.297 19 16.331 Total 335.291 20
Available skill levels
Between Groups 0.915 1 0.915 0.031 0.862 Within Groups 557.314 19 29.332 Total 558.230 20
Insurance and risk Between Groups 6.326 1 6.326 0.661 0.426 Within Groups 181.701 19 9.563 Total 188.027 20
Procurement Between Groups 12.705 1 12.705 0.311 0.584 Within Groups 776.921 19 40.891 Total 789.626 20
Client characteristics
Between Groups 80.649 1 80.649 0.833 0.373 Within Groups 1840.131 19 96.849 Total 1920.780 20
Supply chain relationships
Between Groups 15.361 1 15.361 0.331 0.572 Within Groups 882.889 19 46.468 Total 898.250 20
Solving problems on site
Between Groups 0.747 1 0.747 0.044 0.836 Within Groups 322.951 19 16.997 Total 323.698 20
Professional and industry organisations
Between Groups 30.515 1 30.515 0.383 0.543 Within Groups 1514.557 19 79.714 Total 1545.072 20
Research organisations and universities
Between Groups 21.286 1 21.286 0.244 0.627 Within Groups 1657.264 19 87.224 Total 1678.550 20
Improving OH&S Between Groups 23.926 1 23.926 0.154 0.699 Within Groups 2956.084 19 155.583 Total 2980.010 20
Performance-based standards
Between Groups 22.881 1 22.881 0.149 0.704 Within Groups 2925.477 19 153.972 Total 2948.358 20
Industry standards Between Groups 16.974 1 16.974 0.826 0.375 Within Groups 390.509 19 20.553 Total 407.483 20
Local authority regulations
Between Groups 0.549 1 0.549 0.007 0.934 Within Groups 1478.743 19 77.829
Total 1479.291 20
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6.9 Correlation and regression
Correlation analysis was carried out using Pearson’s Coefficient of Correlation to
determine if any specific relationships exist between the variables of the survey
response. Significant results were returned for both the factors and the sub-factors.
Results for the factors are displayed in Table 6.12. Results for the sub-factors are
presented in Table 6.13.
Three factor pairings exhibited significant negative correlations: ‘Client and end-user
influence’ with ‘Regulatory climate’; ‘Project-based conditions’ with ‘Regulatory
climate’; and ‘Project-based conditions’ with ‘Industry networks’. The first two
factors are fully external to the SME innovator’s company and are items over which
the innovator has little or no control. To an extent, they are also external to the
project delivery process. The negative correlation is evidence that the innovators in
the study see these two factors as working in opposite directions to each other when it
comes to fostering innovation. The second factor pair is evidence of the somewhat
disputative relationship between building regulators and those who have
responsibility for dealing with unforeseen occurrences that can occur on a
construction site. The third factor pair both relate to industry-centred matters, not
entirely in the control of the SME innovator, although it may be possible to exercise
influence. Nevertheless, these factors are also seen by the survey innovators to be
acting counter to each other. It may be that the innovators were split into those who
largely focussed on delivering their own projects, or those who aimed at convincing
the industry to take up their innovation. This represents a dilemma for those
contractors who successfully deliver a technical innovation. Do they remain in the
area of construction project contractor or do they become essentially a supplier of
their innovation to the larger industry? The innovators who responded to this survey
involved companies who were headed in either direction, as well as those who were
continuing to take both roles. Either path may prove to be suitable for some kinds of
innovation and for some company types which embark on the innovation delivery
process. The study undertaken for this thesis was not able to determine a single most
appropriate course for the potential construction innovator.
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Table 6.12 Correlations between factors for the whole sample
Company
resources
Client and
end-user
influence
Project-
based
conditions
Industry
based
networks
Regulatory
climate
Company
resources
Pearson
Correlation
1
Client and
end-user
influence
Pearson
Correlation
-0.139 1
Project-
based
conditions
Pearson
Correlation
-0.105 0.084 1
Industry
based
networks
Pearson
Correlation
-0.080 -0.355 -0.518* 1
Regulatory
climate
Pearson
Correlation
-0.374 -0.472* -0.451* -0.017 1
* Correlation is significant at the 0.05 level (2-tailed).
A table of sub-factor correlations is presented overleaf (Table 6.13). Both positive
and negative correlations were exhibited between the sub-factors. The correlations
include some which were of a high order of significance. These are shown
highlighted in the tables.
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Table 6.13 Correlations between sub-factors – whole sample
Non-patent holder sub-factor correlations
N = 21
Personal
motivation
Available
finance
Available tim
e
Available skill
levels
Insurance and risk
Procurem
ent
Client
characteristics
Supply chain
relationships
Solving
problems on
site
Improving
OH
&S
Professional
& industry
organisations
Research
organisations &
universities
Perform
ance-based standards
Industry standards
Local authority regulations
Personal motivation
1
Available finance
0.505* 1
Available time
0.720** 0.369 1
Available skill levels
0.642** 0.761** 0.501* 1
Insurance and risk
0.662** 0.217 0.323 0.561** 1
Procurement
-0.076 -0.150 -0.124 -0.310 -0.089 1
Client characteristics
-0.192 -0.257 0.064 -0.190 -0.054 -0.086 1
Supply chain relationships
-0.158 -0.206 -0.110 -0.187 -0.238 0.407 0.078 1
Solving problems on site
-0.491* -0.365 -0.484* -0.405 -0.384 0.011 0.327 0.309 1
Improving OH&S
0.013 -0.174 -0.076 -0.088 -0.137 0.005 0.070 0.040 0.402 1
Professional and industry organisations
-0.251 -0.213 -0.320 -0.399 -0.060 0.085 -0.360 -0.023 -0.079 -0.281 1
Research organisations and universities
-0.161 0.152 -0.087 -0.221 -0.276 0.064 -0.453* -0.298 -0.414 -0.480* 0.737** 1
Performance-based standards
-0.268 -0.126 -0.252 0.098 0.029 -0.393 -0.102 -0.343 0.151 -0.205 -0.141 -0.157 1
Industry standards
-0.328 -0.249 -0.256 -0.268 -0.182 -0.315 0.312 -0.025 0.019 -0.220 -0.052 0.009 0.096 1
Local authority regulations
-0.251 -0.118 -.205 -0.179 -0.156 -0.023 -0.182 -0.097 -0.304 -0.361 -0.064 0.265 0.046 0.259 1
* Correlation is significant at the 0.05 level (2-tailed). ** Correlation is significant at the 0.01 level (2-tailed).
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Twelve pairs of sub-factors exhibited significant correlation. Eight of these were
positive correlations and four were negative. Six pairs were correlated at 99%
confidence level and six at 95% confidence level. The strongest correlation was
between ‘Available skill levels’ and ‘Available finance’ and this may simply denote
that if sufficient finance is available skill levels can probably be acquired. Strong
correlations (in descending order of magnitude) were also noted between:
‘Professional and industry organisations’ and ‘Research organisations and
universities’; ‘Personal motivation’ and ‘Available time’; Personal motivation’ and
‘Insurance and risk’; ‘Personal motivation’ and ‘Available skills levels’; and
‘Available skills’ and ‘Insurance and risk’. The first two of these pairs relates to
external contacts which may verify or promote the innovation. The remaining three
pairs are all internal company matters relating to the firms resources. Although these
matters were given relatively low priority by the survey respondents, their high
positive correlations suggest that they ‘hang together’ in the minds of the survey
group. A certain level of interdependency is indicated. As previously mentioned, the
survey group is atypical among the construction SME population, because they have
largely solved their resource based problems, in order to successfully deliver their
technical innovations to the market.
The remaining six pairs of factors with significant correlation at the 95% confidence
level are:
• ‘Personal motivation’ and ‘Available time’;
• ‘Available time’ and ‘Available skills’;
• ‘Personal motivation’ and ‘Solving problems on site’ (negative correlation);
• ‘Available time’ and ‘Solving problems on site’ (negative correlation);
• ‘Improving OH&S’ and ‘Research organisations and universities’ (negative
correlation); and
• ‘Client characteristics’ and ‘Research organisations and universities’ (negative
correlation).
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The first two pairs relate to the previously mentioned resource base of the SME. The
next two pairs relate a resource based matter to solving problems that occur on
building sites. This is an interesting negative correlation because it appeared to the
researcher that most of the survey respondents were very focussed on solving
practical problems. That their motivation and time allocation was negatively
correlated with ‘Solving problems on site’ indicates a possible trade-off between this
focus and the allocation of individual and company resources. The last two
negatively correlated pairs relate to ‘Research organisations and universities’. The
relationship suggests that when an innovation involves an OH&S problem, or when
clients are particularly demanding, independent verification form universities is
unlikely to be sought. Universities and other research organisations can provide
assistance in these matters, but it seems that the innovators in this sample were not
often availing themselves of this option.
6.10 Correlations for sample sub-groups
Pearson’s correlation coefficients were also calculated for each of the six sub-groups
in the sample: small businesses (10); medium businesses (11); product innovators
(13); process innovators (8); patent holders (14); and non-patent holders (7).
Remembering the caveat that these are small sample sizes, it may be that some
interesting insights can be gained from these statistics. The results for the factors are
presented in Tables 6.14 to 6.16. The results for the sub-factors follow in Tables 6.17
to 6.22.
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Table 6.14 Correlations between factors for the small and medium business sub-groups
Small business response N = 10
Company resources
Client and end-user influence
Project-based
conditions
Industry based
networks Regulatory
climate
Company resources 1
Client and end-user influence
-0.156 1
Project-based conditions -0.264 0.360 1
Industry based networks 0.159 -0.512 -0.549 1
Regulatory climate -0.422 -0.609 -0.362 -0.027 1
Medium business response N = 11
Company resources
Client and end-user influence
Project-based
conditions
Industry based
networks
Regulatory climate
Company resources 1
Client and end-user influence
-0.045 1
Project-based conditions -0.0998 0.106 1
Industry based networks -0.263 -0.210 -0.536 1
Regulatory climate -0.310 -0.504 -0.409 0.010 1
No correlation is significant at the 0.05 level (2-tailed).
No significant correlations were found between the factors for either small or medium
sized businesses. The nearest to a significant correlation was the small businesses’
ratings of ‘Project-based conditions’ compared to ‘Industry based networks’. It may
be that the small business innovators are particularly likely to focus their attention on
either on projects or on industry networks to a greater extent than medium-sized
businesses. A similar negative correlation was observed in the responses of product
innovators and this was statistically significant (Table 6.15 overleaf).
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Table 6.15 Correlations between factors for the product and process innovator sub-groups
Product innovator response N = 13
Company
resources
Client and
end-user
influence
Project-
based
conditions
Industry
based
networks
Regulatory
climate
Company resources 1
Client and end-user
influence
-0.077 1
Project-based conditions -0.398 0.470 1
Industry based networks 0.060 -0.518 -0.496 1
Regulatory climate -0.468 -0.566* -0.301 -0.099 1
Process innovator
response
N = 8
Company
resources
Client and
end-user
influence
Project-
based
conditions
Industry
based
networks
Regulatory
climate
Company resources 1
Client and end-user
influence
0.199 1
Project-based conditions -0.214 -0.030 1
Industry based networks -0.276 -0.368 -0.440 1
Regulatory climate -0.191 -0.567 -0.495 0.036 1
* Correlation is significant at the 0.05 level (2-tailed).
There were no significant correlations between patent holder and non-patent holder
responses (Table 6.16 overleaf). Once again this serves to signal the individual nature
of the innovation delivery process because respondents were quite diverse in their
factor ratings whether or not they held patents on their innovation.
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Table 6.16 Correlations between factors for patent holder and no patent sub-groups
Patent holder response N = 14 Company
resources
Client and
end-user
influence
Project-
based
conditions
Industry
based
networks
Regulatory
climate
Company resources 1
Client and end-user
influence
-0.105 1
Project-based conditions -0.055 0.046 1
Industry based networks -0.129 -0.416 -0.501 1
Regulatory climate -0.498 -0.445 -0.425 0.077 1
Non-patent holder
response
N = 7
Company
resources
Client and
end-user
influence
Project-
based
conditions
Industry
based
networks
Regulatory
climate
Company resources 1
Client and end-user
influence
0.255 1
Project-based conditions -0.578 0.235 1
Industry based networks 0.010 -0.358 -0.500 1
Regulatory climate -0.090 -0.696 -0.405 -0.143 1
No significant differences
Correlation calculations were completed for the six sub-groups in the sample on the
innovation sub-factors. Once again, some significant differences were found on a
relatively small number of sub-factors. Small business innovators returned significant
positive correlations for four pairs of factors:
• ‘Personal motivation’ and “Available time’;
• ‘Personal motivation and ‘Insurance and risk’;
• ‘Available finance’ and ‘Available skill levels’; and
• ‘Research organisations and universities’ and ‘Professional and Industry
associations’ (Table 6.17).
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The strong correlation for the first three of these sub-factor pairs, however, is
tempered by the fact that these sub-factors were rated fairly low in the overall priority
list of sub-factors (see Figure 6.3). The remaining strong positive correlation is for
the external organisations which small businesses are likely to depend on for support
and guidance. It is therefore, unsurprising that these correlate highly. The only
strong negative correlation for small business respondents was between ‘Client
characteristics’ and ‘Research organisations and universities’. Remembering that
small businesses rated ‘Client characteristics’ much higher than did other groups, it
might be speculated that this is a result of small business high dependence on
individual clients to have their innovation accepted in the marketplace (see Figure
6.3).
Medium-sized business respondents returned significant correlations for ten separate
sub-factor pairs (Table 6.18). All significant correlations were positive. Eight
correlated pairs referred to sub-factors of the factor ‘Company resources’. This
indicates the close inter-relationships between these matters, which were, however,
given fairly low ratings overall. The two other sub-factor pairs with high positive
correlation are: ‘Professional and industry organisations’ and ‘Research organisations
and universities’; and ‘Solving problems on site’ and ‘Improving OH&S’. The first
of these indicates a strong preference by medium-sized business innovators for
multiple networks within the larger industry sector. The second indicates an
association in the innovators’ minds between site issues generally, and the specific
issue of site safety. This is a positive finding as it indicates that there is a growing
awareness among leading innovators in medium-sized businesses of the importance of
dealing thoroughly with safety matters on construction sites.
Product innovators returned positive correlations for eight sub-factor pairs and two
negative correlation pairs (Table 6.19). Seven of the positive correlations were within
the ‘Company resources’ area. As previously mentioned these were relatively lowly
rated overall (Figure 6.6). The remaining positive correlation was for ‘Professional
and industry organisations’ and ‘Research organisations and universities’. The two
negative correlations were between ‘Personal motivation’ and ‘Solving problems on
site’; and between ‘Client characteristics’ and ‘Research organisations and
universities’. This may be an indication of two streams within the product innovators:
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those who focus on the outcome of their innovation; and those who are deeply
focussed on the innovation process itself.
Building process innovator responses showed six positive correlation pairs and one
negative (Table 6.20). They were the only sub-group to identify a high correlation
between ‘Procurement’ and ‘Supply chain relationships’. It is perhaps surprising that
other innovators did not rate these sub-factors higher, but it may be that the process
innovators dealt with more complex procurement and supply situations than did other
innovators. Process innovators were the only sub-group to display a high correlation
between ‘Insurance and risk’ and ‘Performance-based standards’. This may be due to the
complexity of the approvals process for a new building process. This may also explain
the negative correlation between ‘Procurement’ and ‘Industry standards’ as process
innovators may be seeking to change industry standards, and consequently may require
more flexible procurement options.
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Table 6.17 Correlations between sub-factors for the small business sub-group
* Correlation is significant at the 0.05 level (2-tailed). ** Correlation is significant at the 0.01 level (2-tailed).
Small businesses sub-factor correlations
N = 10
Personal
motivation
Available
finance
Available tim
e
Available skill
levels
Insurance and risk
Procurem
ent
Client
characteristics
Supply chain
relationships
Solving
problems on
site
Improving
OH
&S
Professional
& industry
organisations
Research
organisations &
universities
Perform
ance-based standards
Industry standards
Local authority regulations
Personal motivation
1
Available finance
0.517 1
Available time
0.791** 0.259 1
Available skill levels
0.602 0.916** 0.470 1
Insurance and risk
0.655* 0.217 0.369 0.164 1
Procurement
0.079 -0.211 -0.255 -0.347 0.628 1
Client characteristics
-0.243 -0.443 0.112 -0.300 -0.060 -0.234 1
Supply chain relationships
0.348 0.012 0.211 0.170 0.000 0.116 0.040 1
Solving problems on site
-0.513 -0.281 -0.493 -0.335 -0.283 -0.208 0.393 0.034 1
Improving OH&S
-0.386 -0.283 -0.256 -0.060 -0.151 -0.042 0.490 -0.028 0.160 1
Professional and industry organisations
-0.107 -0.295 -0.315 -0.370 0.258 0.462 -0.459 -0.248 0.151 -0.073 1
Research organisations and universities
0.123 0.185 -0.065 0.036 0.278 0.399 -0.798** -0.367 -0.373 -0.404 0.727* 1
Performance-based standards
-0.233 -0.014 -0.237 -0.107 -0.473 -0.524 -0.182 -0.433 0.227 -0.195 0.031 -0.048 1
Industry standards
-0.604 -0.418 -0.337 -0.543 -0.452 -0.193 0.574 -0.196 0.274 0.042 -0.408 -0.460 0.127 1
Local authority regulations
-0.326 -0.105 -0.199 -0.230 -0.419 0.148 -0.194 0.147 -0.287 -0.332 -0.287 0.097 -0.147 0.457 1
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Table 6.18 Correlations between sub-factors for the medium business sub-group
* Correlation is significant at the 0.05 level (2-tailed). ** Correlation is significant at the 0.01 level (2-tailed).
Medium businesses sub-factor correlations
N = 11
Personal
motivation
Available
finance
Available tim
e
Available skill
levels
Insurance and risk
Procurem
ent
Client
characteristics
Supply chain
relationships
Solving
problems on
site
Improving
OH
&S
Professional
& industry
organisations
Research
organisations &
universities
Perform
ance-based standards
Industry standards
Local authority regulations
Personal motivation
1
Available finance
0.727* 1
Available time
0.891** 0.678* 1
Available skill levels
0.695* 0.585 0.616* 1
Insurance and risk
0.704* 0.494 0.630* 0.803** 1
Procurement
-0.124 -0.124 -0.010 -0.275 -0.159 1
Client characteristics
0.002 0.173 -0.214 0.054 0.198 -0.014 1
Supply chain relationships
-0.407 -0.479 -0.377 -0.423 -0.371 0.571 0.324 1
Solving problems on site
-0.524 -0.586 -0.497 -0.491 -0.572 0.206 0.256 0.532 1
Improving OH&S
0.082 -0.087 0.118 -0.151 -0.277 0.066 -0.095 0.004 0.640* 1
Professional and industry organisations
-0.440 -0.093 -0.332 -0.481 -0.237 -0.118 -0.137 0.017 -0.304 -0.499 1
Research organisations and universities
-0.255 0.118 -0.170 -0.405 -0.334 -0.152 -.362 -0.247 -0.489 -0.487 0.851** 1
Performance-based standards
-0.279 -0.366 -0.322 0.315 0.166 -0.320 -0.082 -0.308 0.064 -0.200 -0.254 -0.263 1
Industry standards
-0.204 -0.103 -0.219 -0.077 -0.177 -0.387 0.094 0.041 -0.190 -0.329 0.161 0.246 0.075 1
Local authority regulations
-0.173 -0.229 -0.302 -0.070 -0.117 -0.343 0-.458 -0.353 -0.397 -0.508 0.390 0.558 0.402 0.065 1
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Table 6.19 Correlations between sub-factors for the product innovator sub-group
* Correlation is significant at the 0.05 level (2-tailed). ** Correlation is significant at the 0.01 level (2-tailed).
Product innovator sub-factor correlations
N = 13
Personal
motivation
Available
finance
Available tim
e
Available skill
levels
Insurance and risk
Procurem
ent
Client
characteristics
Supply chain
relationships
Solving
problems on
site
Improving
OH
&S
Professional
& industry
organisations
Research
organisations &
universities
Perform
ance-based standards
Industry standards
Local authority regulations
Personal motivation
1
Available finance
0.493 1
Available time
0.931** 0.626* 1
Available skill levels
0.665* 0.854** 0.714** 1
Insurance and risk
0.870** 0.234 0.745** 0.552 1
Procurement
0.029 -0.171 -0.123 -0.341 -0.028 1
Client characteristics
-0.353 -0.401 -0.413 -0.275 -0.134 -0.150 1
Supply chain relationships
-0.266 -0.247 -0.324 -0.112 -0.195 -0.165 0.136 1
Solving problems on site
-0.557* -0.408 -0.546 -0.456 -0.449 -0.185 0.540 0.362 1
Improving OH&S
-0.034 -0.291 0.021 -0.074 0.002 0.026 0.438 0.080 0.158 1
Professional and industry organisations
-0.125 -0.314 -0.190 -0.306 0.026 0.258 -0.354 0.054 0.077 -0.179 1
Research organisations and universities
-0.197 .0134 -0.124 -0.176 -0.346 0.397 -0.654* -0.338 -0.275 -0.431 0.577* 1
Performance-based standards
-0.251 -0.018 -0.205 -0.085 -0.225 -0.470 -0.020 -0.308 0.185 -0262 -0.054 -0.001 1
Industry standards
-0.270 -0.294 -0.304 -0.296 -0.275 -0.326 0.326 0.200 0.032 -0.253 -0.205 -0.104 0.019 1
Local authority regulations
-0.279 -0.105 -0.258 -0.234 -0.251 0.183 -0.152 0.078 -0.227 -0323 -0.345 0.134 -0.107 0.248 1
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Table 6.20 Correlations between sub-factors for the process innovator sub-group
* Correlation is significant at the 0.05 level (2-tailed). ** Correlation is significant at the 0.01 level (2-tailed).
Process innovator sub-factor correlations
N = 8
Personal
motivation
Available
finance
Available tim
e
Available skill
levels
Insurance and risk
Procurem
ent
Client
characteristics
Supply chain
relationships
Solving
problems on
site
Improving
OH
&S
Professional
& industry
organisations
Research
organisations &
universities
Perform
ance-based standards
Industry standards
Local authority regulations
Personal motivation
1
Available finance
0.909** 1
Available time
0.615 0.354 1
Available skill levels
0.650 0.407 0.438 1
Insurance and risk
0.208 -0.060 -0.011 0.720* 1
Procurement
-0.226 -0.179 -0.128 -0.312 -0.314 1
Client characteristics
0.278 0.011 0.591 0.009 0.072 -0.028 1
Supply chain relationships
-0.149 -0.084 -0.070 -0.368 -0.377 0.938** 0.102 1
Solving problems on site
-0.373 -0.241 -0.563 -0.251 -0.156 0.293 -0.108 0.262 1
Improving OH&S
-0.117 0.030 -0.244 -.0157 -0.365 0.001 -0.098 -0.083 0.801* 1
Professional and industry organisations
-0.393 -0.118 -0.377 -0.628 -0.459 -0.075 -0.480 -0.046 -0.351 -0.307 1
Research organisations and universities
-0.012 0.164 0.004 -0.335 -0.331 -0.243 -0.313 -0.208 -0.698 -0.493 0.894** 1
Performance-based standards
-0.307 -0.473 -0.288 0.450 0.760* -0.329 -0.238 -0.376 0.107 -0.171 -0.246 -0.337 1
Industry standards
-0.433 -0.482 -0.192 -0.203 0.189 -0.727* 0.116 -0.667 -0.074 -0.049 0.264 0.188 0.458 1
Local authority regulations
-0.189 -0.214 -0.237 0.046 0.440 -0.434 -0.312 -0.511 -0.596 -0.622 0.557 0.628 0.392 0.500 1
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Table 6.21 Correlations between sub-factors for the patent holder sub-group
* Correlation is significant at the 0.05 level (2-tailed). ** Correlation is significant at the 0.01 level (2-tailed).
Patent holder sub-factor correlations
N = 14
Personal
motivation
Available
finance
Available tim
e
Available skill
levels
Insurance and risk
Procurem
ent
Client
characteristics
Supply chain
relationships
Solving
problems on
site
Improving
OH
&S
Professional
& industry
organisations
Research
organisations &
universities
Perform
ance-based standards
Industry standards
Local authority regulations
Personal motivation
1
Available finance
0.439 1
Available time
0.781** 0.311 1
Available skill levels
0.655* 0.868** 0.564* 1
Insurance and risk
0.719** 0.109 0.411 0.269 1
Procurement
0.071 -0.131 -0.191 -0.286 0.125 1
Client characteristics
-0.366 -0.457 -0.028 -0.364 -0.198 -0.229 1
Supply chain relationships
-0.112 -0.185 -0.061 -0.023 -0.180 -0.119 0.089 1
Solving problems on site
-0.499 -0.336 -0.537* -0.365 -0.314 -0.259 0.376 0.316 1
Improving OH&S
0.220 -0.105 0.038 0.213 0.172 -0.044 0.088 0.007 0.094 1
Professional and industry organisations
-0.331 -0.323 -0.406 -0.486 -0.022 0.338 -0.296 0.033 0.202 -0.252 1
Research organisations and universities
-0.224 0.167 -0.188 -0.143 -0.236 0.418 -0.521 -0.372 -0.302 -0.496 0.643* 1
Performance-based standards
-0.368 -0.051 -0.319 -0.211 -0.336 -0.463 -0.034 -0.251 0.231 -0.341 0.089 0.101 1
Industry standards
-0.586* -0.422 -0.404 -0.570* -0.331 -0.174 0.639* -0.082 0.272 -0.213 -0.256 -0.230 0.241 1
Local authority regulations
-0.293 -0.104 -0.217 -0.241 -0.224 0.154 -0.096 0.049 -0.255 -0.345 -0.247 0.146 -0.066 0.490 1
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Table 6.22 Correlations between sub-factors for the non-patent holder sub-group
* Correlation is significant at the 0.05 level (2-tailed). ** Correlation is significant at the 0.01 level (2-tailed).
Non-patent holder sub-factor correlations
N = 7
Personal
motivation
Available
finance
Available tim
e
Available skill
levels
Insurance and risk
Procurem
ent
Client
characteristics
Supply chain
relationships
Solving
problems on
site
Improving
OH
&S
Professional
& industry
organisations
Research
organisations &
universities
Perform
ance-based standards
Industry standards
Local authority regulations
Personal motivation
1
Available finance
0.925** 1
Available time
0.786* 0.886** 1
Available skill levels
0.657 0.577 0.782* 1
Insurance and risk
0.699 0.665 0.819* 0.966** 1
Procurement
-0.349 -0.322 -0.321 -0.349 -0.223 1
Client characteristics
0.722 0.657 0.470 0.364 0.405 0.064 1
Supply chain relationships
-0.312 -0.258 -0.261 -0.440 -0.362 0.917** 0.180 1
Solving problems on site
-0.482 -0.564 -0.715 -0.488 -0.509 0.344 0.155 0.337 1
Improving OH&S
-0.391 -0.353 -0.555 -0.461 -0.444 0.061 0.126 0.049 0.883** 1
Professional and industry organisations
-0.087 0.160 0.143 -0.278 -0.171 -0.135 -0.534 -0.144 -0.617 -0.358 1
Research organisations and universities
-0.047 0.107 0.067 -0.326 -0.286 -0.259 -0.542 -0.196 -0.639 -0.457 0.932** 1
Performance-based standards
-0.092 -0.317 -0.056 0.542 0.385 -0.324 -0.241 -0.484 0.034 -0.095 -0.492 -0.425 1
Industry standards
-0.010 0.077 0.275 0.020 -0.146 -0.383 -0.026 -0.029 -0.282 -0.267 0.095 0.256 -0.065 1
Local authority regulations
-0.049 -0.189 -0.165 -0.012 -0.066 -0.356 -0.646 -0.480 -0.489 -0.512 0.440 0.616 0.327 -0.085 1
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The patent holder sub-group displayed seven positive correlation sub-factor pairs and
three negative pairs (Table 6.21). In addition to those pairs already discussed, patent
holders positively correlated ‘Client characteristics’ and ‘Industry standards’. This is
hard to explain, other than to state that ‘Industry standards’ are perhaps partly
determined by what the client is willing to pay for. There were two negative
correlations with ‘Industry standards’: these being ‘Personal motivation’ and
‘Available skill levels’. The remaining negative correlation was between ‘Available
time’ and ‘Solving problems that occur on site’. This probably reflects the underlying
industry issue of tight project scheduling leaving relatively little contingency time for
problem solving.
Lastly, among the non-patent holders there were nine significant positive correlation
pairs and no negative ones (Table 6.22). These results differed from the patent holder
results in that non-patent holders closely correlated ‘Procurement’ and ‘Supply chain
relationships’ as well as ‘Solving problems on site’ and ‘Improving OH&S’. It may
be that the non-patent holder innovators were, like the process innovators, involved in
more complex construction project types.
6.11 Regression analysis
Regression analysis was undertaken to establish if any linear relationship exists
between the variables in the survey factors and sub-factors. Regression analysis was
performed for all possible pairs of factors as well as for all possible pairs of sub-
factors in the sample for a total of 115 individual tests. The results of this analysis are
presented in Tables 6.23 and 6.24. Only three pairs, where R² value was greater than
0.5, were found. The positive results were for the following sub-factor pairs;
‘Personal motivation’ versus ‘Available time’; ‘Available finance’ versus ‘Available
skill levels’; and ‘Professional and industry associations’ versus ‘Research
organisations and universities’. Scatter plots for these results are displayed in Figures
6.9, 6.10 and 6.11 (pp.179-180). These illustrate the strength of the relationship by
the steepness of gradient of the ‘line of best fit’ R² value.
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Table 6.23 Regression values for factor pairs
Regression for factor pairs (R²)
Company resources
Client and end-user influences
Project-based conditions
Industry networks
Regulatory climate
Company resources
1.000
Client and end-user influences
0.000 1.000
Project-based conditions
0.047 0.008 1.000
Industry networks
0.007 0.147 0.246 1.000
Regulatory climate
0.140 0.287 0.161 0.000 1.000
No significant values
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Table 6.24 Regression values for sub-factor pairs
Regression R² for sub-factor pairs
Personal
motivation
Available finance
Available tim
e
Available
skill levels
Insurance and risk
Procurem
ent system
s
Client
characteristics
Supply chain
relationships
Solving
problems
that occur on site
Improving
OH
&S
Professional
and industry associations
Research
organisations and
universities
Perform
ance-based
standards
Industry standards
Local authority
regulations
Personal motivation
1
Available finance
0.2555 1
Available time 0.519* 0.136 1
Available skill levels
0.4128 0.5786* 0.2512 1
Insurance and risk
0.4379 0.0472 0.104 0.3143 1
Procurement systems
0.0058 0.0225 0.0155 0.0958 0.0079 1
Client- characteristics
0.0368 0.0662 0.0041 0.036 0.0029 0.0074 1
Supply chain relationships
0.025 0.0426 0.0121 0.0348 0.0567 0.1656 0.006 1
Solving problems on site
0.2413 0.1334 0.2346 0.1638 0.1471 0.1656 0.1068 0.0955 1
Improving OH&S
0.0002 0.0302 0.0058 0.0078 0.0188 0.00002 0.0048 0.0016 0.1618 1
Professional and industry associations
0.0628 0.0454 0.1024 0.1588 0.0036 0.0072 0.1298 0.0005 0.0062 0.0787 1
Research organisations and universities
0.0261 0.0231 0.0076 0.049 0.076 0.004 0.2055 0.0886 0.1717 0.23 0.5427* 1
Performance-based standards
0.0717 0.016 0.0636 0.0096 0.0008 0.1544 0.0104 0.1179 0.0227 0.0421 0.0198 0.0246 1
Industry standards
0.1078 0.062 0.0655 0.0719 0.0332 0.0994 0.0972 0.0006 0.0004 0.0482 0.0027 0.00008 0.0092 1
Local authority regulations
0.063 0.0139 0.0419 0.0319 0.0244 0.0005 0.033 0.0094 0.0923 0.1301 0.0041 0.0703 0.0021 0.0669 1
*Significant R² values
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Figure 6.9 Scatter plot and linear trend line for ‘Personal motivation’ versus ‘Available time’
Figure 6.10 Scatter plot and linear trend line for ‘Available skill levels’ versus ‘Available finance’
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Figure 6.11 Scatter plot and linear trend line for ‘Professional and industry associations’ versus ‘Research organisations and universities’
That these particular three pairs of sub-factors should demonstrate a relationship is an
interesting finding. ‘Personal motivation’ and ‘Available time’ are both matters
centred on the individual innovator. The more that personal motivation is regarded as
important, the more likely it is that finding sufficient time to devote to the potential
innovation will also be important. These sub-factors were not prioritised at the first
level (Table 6.2), but their close relationship does signal the importance of the
individual leader in the process of technical innovation delivery by an SME.
‘Available finance’ and ‘Available skill levels’ are both strongly in a company’s
resource capacity. The necessary skills can often be acquired, if appropriate financial
resources are available to do so. The greater the financial resources that are available,
the more high quality skills can be assigned to the innovation delivery process.
Finally, ‘Professional and industry associations’ and ‘Research organisations and
universities’ are both networking factors fully external to the innovating company.
The positive relationship indicates that those innovators who value contacts with one
group are likely to value association with the other. Both these sub-factors were
given first level priority in the survey sample (Table 6.2).
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The inter-relationships between the survey factors and sub-factors could be
investigated more fully with a larger sample of construction SMEs with more varied
experience in innovation delivery and innovation diffusion.
6.12 Summary of statistical results
The statistical analysis of the survey data has provided some insight into factors that
affect technical innovation delivery by construction SMEs. It does not, however,
provide a template for undertaking such innovation processes. There is much
variation among the survey responses. This indicates that the individual nature of
each innovation delivery should be emphasised, ahead of any commonalities.
Furthermore, the differences found between the identified sub-groups were less than
anticipated. This is especially true of small and medium-sized company sub-groups
in the sample. Much existing literature on small businesses in construction stresses
the importance of internal resources to the small firm (Abbott et al. 2006; Sexton and
Barrett 2003a; Sexton and Barrett 2003b; Sexton and Barrett 2004; Sexton et al.
2006; Manley 2008). The survey sample did not support this belief. This particular
sample of construction SMEs were not typical of other companies in the sector. The
characteristic which qualified them for the sample, having delivered a recognised
successful technical innovation, made them necessarily atypical. High-level technical
innovators may represent a distinct group among construction companies. The
experience of having successfully delivered a high-level technical innovation was
seen in the survey sample to largely outweigh expected differences in terms of
company size, innovation type and patent holdings.
In order to learn more about the technical innovation delivery process, further
investigation of the individual experience is required. Qualitative data collection is,
therefore, an appropriate avenue to pursue.
6.13 Survey respondents open-ended comments
At the completion of the survey the innovators were asked if they had any comments
to add on the basis of their experience with technical innovation delivery. Care was
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taken to avoid interview bias by allowing the survey respondents to take the lead with
their open-ended responses (Kvale 1996). These open-ended responses have been
sorted into three broad categories: economic, relational and structural issues. Tables
6.25, 6.26 and 6.27 (pp.183-186) illustrate the number and type of interviewees who
made comments under each category.
The innovators who raised economic issues mostly stressed that economic reform was
needed if industry performance was to be improved. The importance of the larger
economy to SMEs was mentioned by three innovators. It was also pointed out that
the current state of the national and the global economy can impact on the importance
rating for each of the factors in the survey. The Global Financial Crisis was reported
to have had a strong effect on supply chains in construction by those medium-sized
businesses who worked on international projects:
“Last year we had difficulty getting what we wanted from our
suppliers but the downturn overseas has made things easier”
(R4_M.Proc.NoPat).
The effectiveness of Australian government stimulus packages was commented upon
favourably by two innovators:
“The Building Education Revolution (BER) program is very
good for us because school communities are keen to have more
sustainable building practices” (R18_S.Prod.Pat).
Other innovators raised the issue of “off balance sheet assets” such as intellectual
property, business processes, reputation and market understanding. These form a
large part of the innovator’s investment in an SME
Lack of recognition of this situation results in difficulties for those seeking to generate
and deliver innovation. This is supported by the wider management literature (Keen
1997). It was reported as particularly true in the early stages of innovation delivery.
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Table 6.25 Common economic themes in the open-ended comments by survey respondents
Comment Survey respondents who raised this
matter (Descriptive codes explained in
Table 5.4)
State of the economy R4_M.Proc.NoPat; R8_M.Proc.Pat;
R5_S.Proc.NoPat;
Finance in the planning stages R1_M.Prod.Pat; R10_S.Prod.Pat; R16_M.Prod.Pat;
R2_S.Prod.Pat; R12_S.Prod.Pat; R20_S.Prod.Pat;
Government stimulus packages R16_M.Prod.Pat; R18_S.Prod.Pat;
Cost of patents R11_S.Prod.Pat; R13_S.Prod.Pat;
R12_S.Prod.Pat;
Industry unwilling to pay for IP R5_S.Proc.NoPat;
Market knowledge R3_M.Prod.NoPat; R14_M.Proc.NoPat;
R11_S.Prod.Pat; R19_M.Proc.NoPat;
Proven performance R1_M.Prod.Pat; R6_M.Proc.NoPat;
R2_S.Prod.Pat; R9_M.Prod.Pat;
The cost of acquiring and defending patents was raised by three innovators. Although
patents are expensive to acquire and to defend, banks and other lenders do not usually
recognise a patent as an asset. A business, particularly a small business, often cannot
find finance as a result of holding a potentially profitable patent even if they have a
viable business plan. . As one small business innovator put it:
“It is very difficult to fund a technical innovation because the
banks do not regard a patent as an asset. You have to have
established cash flow before you can borrow to develop a
product” (R11_S.Prod.Pat).
The cost of patent litigation is a widespread problem internationally, especially in the
United States, where it has the potential to force some smaller businesses out of
research on product development (Lerner 1999). In addition, one innovator reported
that:
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“The Australian construction industry is largely unwilling to pay
for the use of intellectual property. They understand the need to
pay for the products of innovation, but not for the know-how
involved in problem solving” (R5.S.Proc.NoPat).
Four innovators declared that a thorough knowledge of the market being serviced is
essential for any successful innovation delivery process. A further four reported that
in the end, it is proven performance in comparison to existing practice, which allows
an innovation to become accepted in the construction market. These unprompted
comments indicate the importance placed on business management skills by the
successful innovators.
Table 6.26 Common relationship themes in the open-ended comments by survey respondents
Comment Survey respondents who raised this
matter (Descriptive codes explained in
Table 5.4)
Disputes with industry organisations
R1_M.Prod.Pat; R18_S.Prod.Pat;
R16_M.Prod.Pat;
Competitor sourced misinformation
R1_M.Prod.Pat; R15_M.Proc.NoPat;
R2_S.Prod.Pat;
In house training R1_M.Prod.Pat; R3_M.Prod.NoPat;
Shifting the risk R4_M.Proc.NoPat;
End-user misunderstanding R2_S.Prod.Pat;
Community involvement R9_M.Prod.Pat; R17_S.Prod.Pat;
R14_M.Proc.NoPat;
Professional association’s lobbying power
R1_M.Prod.Pat; R6_M.Proc.NoPat; R17_S.Prod.Pat;
R2_S.Prod.Pat; R9_M.Prod.Pat; R21_M.Proc.NoPat;
The innovators who raised relationship issues talked about the need for more
cooperation within the industry and the need to reduce time wasted in intra-industry
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disputation. Three reported that some industry organisations resist innovation as it
can be seen as a threat to their area of expertise. Three innovators gave examples of
misinformation put out by established competitors. This can severely restrict those
innovators trying to acquire a share of the market.
Two innovators reported their positive experience with staff training. They found that
training staff ‘in-house’ in the use of an innovative product or process had been more
effective than relying on traditional trade training which is sometimes inflexible. One
innovator reported that large companies often try to shift risk downwards to smaller
businesses through sub contract arrangements. This is widely supported in the
academic literature (Hinze 1994; Langford et al. 2000; Loosemore 1999; Zaghloul
and Hartman 2003).
One innovator reported difficulty with end-user misunderstanding of product
operation. Lack of technical expertise may lead potential clients to avoid an
innovative product because of inability to judge the long term benefits of a ‘new to
market’ innovation. Three innovators explained how involvement in their local
community encourages positive public perceptions of innovative companies:
“The local council and the people in this area are very
supportive of local businesses” (R9_M.Prod.Pat).
This is a useful strategy for potential innovators to follow. A total of six innovators
stated that industry and professional organisations are particularly useful to them as
lobbyists on government legislation and Australian Standards. Such organisations can
also play a useful role as monitors of changes in the regulatory environment for
SMEs. Small businesses, in particular, rely on industry associations to represent their
interests with government and provide feedback to the members on potential
government policy changes. Unlike large businesses, they are usually not able to deal
with these matters directly because of limited influence on the national stage.
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Table 6.27 Common structural themes in the open-ended comments by survey respondents
Comment Survey respondents who raised this
matter (Descriptive codes explained in
Table 5.4)
The significance of various factors changes over the course of innovation delivery
R3_M.Prod.NoPat; R15_M.Proc.NoPat; R16_M.Prod.Pat;
R7_S.Proc.Pat; R18_S.Prod.Pat;
Independent performance testing R1_M.Prod.Pat; R17_S.Prod.Pat;
R2_S.Prod.Pat;
International verification R7_S.Proc.Pat;
Environmental issues drive innovation
R2_S.Prod.Pat; R11_S.Prod.Pat; R17_S.Prod.Pat; R19_M.Proc.NoPat;
R6_M.Proc.NoPat; R14_M.Proc.NoPat; R18_S.Prod.Pat; R21_M.Proc.NoPat;
Circuit breakers to ‘business as usual’
R2_S.Prod.Pat; R16_M.Prod.Pat;
R12_S.Prod.Pat;
Those innovators who raised structural issues mostly said that processes needed
streamlining in order to assist delivery of new ideas. They pointed out that the needs
of SME innovators vary according to the stage of innovation delivery. A great deal of
assistance from government and research organisations would be useful in the early
stages of innovation delivery. This tends to be the time however, when assistance is
largely unutilised because the effort and compliance paperwork involved in qualifying
for assistance deters small businesses.
Independent performance verification and testing can be an expensive investment, but
it is often essential to the delivery of a new construction product or process. Three
innovators pointed out that relationships with research bodies and universities could
be improved in this area. One innovator related the situation where, in attempting to
deliver a technical innovation internationally, the process of proving the value of the
innovation must begin again ‘from scratch’ in each jurisdiction. Internationally
recognised verification standards would assist with this matter.
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Six innovators said that environmental issues are currently the main drivers of
construction innovation:
“There are a lot of good intentions out there. Environmentally
friendly products have a ready-made market if it’s done
properly” (R14_M.Proc.NoPat).
This is power of environmental issues to drive innovation is supported in the
academic literature by Bossink (2004a). Two innovators reported that they believed
this to be an accelerating trend.
Finally, three innovators reported on the widespread need for ‘circuit breakers’, in
order to persuade industry to move away from ‘business as usual’ as a mode of
operation. External events such as accidents, natural disasters, recessions and credit
droughts have the potential to create the impetus for innovative construction products
and processes. Sometimes SMEs are best placed to meet these challenges.
The issues raised in the open-ended comments have the potential to shed much light
on the way technical innovations are delivered in the construction industry. As many
of the issues raised are subjective and case-related, it is necessary to explore the
matter of construction innovation delivery through qualitative as well as quantitative
methods.
6.14 Limitations of the data derived from the AHP study
There are always pitfalls when future predictions are made from empirical research
that is very much situated in the present day. As referred to in Chapter 1 of this
thesis, the seminal work of Marian Bowley in the 1960s did much to elucidate the
construction industry’s dilemma in the delivery of a more efficient built product
(Bowley 1960, 1966). The work represented a pioneering contribution to the study of
construction innovation. However, one of technologies lauded by Bowley in her 1960
book “Innovations in building materials: An economic study” was asbestos cement
sheeting for housing construction. With the perspective of the current day and our
knowledge of the mortality, disease and distress caused by this product when it is
disturbed by construction processes, a different evaluation must be made. There is no
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intention here to deride Bowley’s work as the damage done by asbestos was not
known at the time and the evaluation done at the time was correct according to the
existing state of knowledge about asbestos fibre. The example is simply raised as an
illustration of the perils of making predictions based on any data that is necessarily
limited and subject to change. In a sense, all knowledge includes this unknown factor
but it is particularly true when the research question involves the impact of human
beings and their actions in the environment.
As reported in Chapter 4 of this thesis, Analytic Hierarchy Process is a methodology
that has been applied in many fields to address many complex and divergent decision
making processes. The value of the methodology chiefly resides in the fact that it can
deal with problems that require the evaluation of non commensurate criteria or
quantities. It is therefore a suitable method to use for a survey addressing the
question of the factors that have most influence on the successful delivery of technical
innovation by construction SMEs. Useful insights have been generated through
reflective analysis of the data collected by the survey. It was not, however, the
intention of this researcher to produce a statistically validated rating system for
predicting those factors that have the most effect on potential technical innovator
performance. The sample size is much too small for this and the individual instances
of technical innovation delivery far too diverse. Rather, the intention of the survey
was exploratory. It was intended to shine a light on any commonalities of attitude or
of strategy that could be deduced from the survey respondents’ answers. Such
commonalities, as well as any divergences, are capable of revealing insights into the
process of technical innovation delivery and of indicating possible useful strategies
for potential innovators. However, it is not possible from this kind of research to
draw broad generalisations about the innovation process which can be expected to
have universal application. The survey reports on aggregated attitudes from a group
of successful innovators in a particular place and at a particular time. It would be
inappropriate to claim it represents more than a useful perspective on the research
question as opposed to an empirically validated answer to it. This does not invalidate
the survey, or the priorities derived from it, but it serves to temper its ability to be broadly
generalised. It has been pointed out that:
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“Being consistent is often thought of as a prerequisite to clear
thinking. However, the real world is hardly ever perfectly consistent
and we can learn new things only by allowing for some inconsistency
with what we already know” (Forman and Selly 2001 p.46).
Furthermore, there are other issues with the use of the AHP data set to assess or
predict the likelihood of innovation success in SMEs generally. Keeney (1996) points
out the importance of a consideration of values in the decision making process. If a
problem is reduced to a choice between predetermined alternatives, other possible
approaches are necessarily excluded. This represents a freely acknowledged
limitation to this study. There is a human factor in the operation of construction
projects which cannot be validly ignored. This was clearly brought home to the
researcher when it was noticed that a particular survey respondent had rated ‘personal
motivation’ very lowly in his list of comparative weightings. This seemed to be an
anomaly as the survey respondent appeared to the researcher to be someone who was
characterised by a very high level of personal motivation and enthusiasm for his
innovation. When queried on this matter, the respondent replied that he was “always
motivated and therefore it was not of any significance in the delivery of his
innovation” (R1_M.Prod.Pat). The logical inconsistency which some may see in this
answer can be regarded as symptomatic of the effect of the human element in the
survey response. Self efficacy, or the belief in one’s own ability to perform a task, is
likely to be very strong in those who undertake entrepreneurial activity to deliver an
innovation (Shane 2003).As the previously mentioned example illustrates, however, the
individual may not be in a position to objectively judge his or her own level of self
efficacy or motivation.
6.14.1 Inconsistency factor in AHP
The question of inconsistency is specifically addressed in the formulation of the AHP
methodology (Saaty 1980, 1994). Inconsistency arises when a decision maker ranks
criteria in a self contradictory manner. In the most severe case, this would mean X is
more important than Y, Y is more important than Z, but Z is more important than X.
More commonly, inconsistency arises from the weighting or amount by which one
criterion is said to be preferred over another. AHP methodology assumes that such
inconsistencies are likely to occur and provides a measure of the level of such
inconsistency using the consistency ratio. Table 6.28 shows the inconsistency factors
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for each of the 21 survey respondents randomly sorted so that individuals cannot be
identified (Equation given in Chapter 5, p.115).
Depending on the intended aim of the decision making process, different levels of
inconsistency may be acceptable. Particularly when the aim is to explore a process
using multiple respondents, a relatively high level of inconsistency is to be expected
and does not nullify the results of the priority rating. Relatively high inconsistency,
however, does suggest the need for finer grained, qualitative research into the reasons
behind the inconsistencies.
Table 6.28 Inconsistency factors
Respondent Respondent Respondent
A 0.13 H 0.57 O 0.25
B 0.17 I 0.30 P 0.42
C 0.07 J 0.46 Q 0.11
D 0.26 K 0.26 R 0.42
E 0.17 L 0.21 S 0.10
F 0.40 M 0.12 T 0.11
G 0.20 N 0.33 U 0.23
Average inconsistency factor – 0.28
Saaty (2003) specifically states that an inconsistency factor of greater than 0.1 for the
data set leaves the result open to question. He is, however, referring to the situation
where an individual decision maker has used the process to determine a specific
course of action or where some empirical conclusion is to be drawn from a data set of
several decision makers. This is not the case in the study undertaken for this thesis.
Newell and Seabrook (2006) reported that a consistency ratio of less than 0.2 is
considered acceptable in AHP studies, such as those used to compile an index of
specific priority ratings in fields such as property investment (Newell and Seabrook
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2006 p.286). Forman and Selly (2001) note that higher than usual standard levels of
inconsistency may be tolerated in some circumstances, particularly when the data
gathering intention is descriptive rather than definitive. This thesis does not propose
to produce a specific priority guideline on the factors which affect technical
innovation in construction. The priorities detected here are simply indicators of the
directions that a specific number of successful innovators have followed. As such, the
descriptive intent allows for a more flexible approach to inconsistency in the data.
Ozdemir and Saaty (2006) have gone so far as to suggest that this matter of
inconsistency can be addressed by including an additional criterion labelled ‘the
unknown’ in the value tree. The unknown would then be ranked against the other
criteria in the standard way with all Analytic Hierarchy Process studies. This is
proposed as a technique for avoiding inconsistencies. The technique is not adopted
here as it was considered likely to antagonise some respondents and lead to
incomplete survey responses.
Doloi (2008) in his AHP study on improving construction productivity states that an
appropriate test for consistency when using AHP with survey data is that “75% of the
data set must lie within the range of average ±2 standard deviations” (Doloi 2008
p.845). This condition can be met by the data set for this thesis, as is demonstrated by
Tables 6.29, 6.30, 6.31, 6.32, 6.33, 6.34, 6.35 and 6.36 (commencing overleaf p.191).
Confidence intervals were also calculated for the whole sample and the three sub-
group pairs. F tests were performed in Excel spreadsheets for each of the sub-group
pairs and no significant differences were found compared with critical F test values
from tables (Black et al. 2009). While the standard deviations of the survey responses
can be characterised as relatively high, indicating that the survey group is diverse in
its attitude to the factors and sub-factors, there is no statistically significant difference
in the sum of squares calculations for any of the three identified sub-group pairs in the
sample. Consequently, it can be argued that the inconsistency levels of the responses
are unlikely to have skewed the results in any particular direction. As previously
mentioned, Ganzac (1994) found that internally inconsistent results may still give
good approximations of real or ‗true‘ values (Ganzac 1994 p.193). For this reason,
the decision was taken that those responses which exhibited higher levels of
inconsistency would be retained in the sample, given that a descriptive and
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exploratory approach was taken to the research topic of the factors affecting technical
innovation delivery by construction SMEs.
Table 6.29 Standard Deviation of AHP factor weightings
Factor Standard Deviation
for 21 survey
responses
Company resources 11.658 %
Client and end user influences 14.1139 %
Project based conditions 15.9688 %
Industry networks 16.2019 %
Regulatory climate 18.751 %
As Table 6.29 (above) shows, the confidence intervals are somewhat similar for all
factors with only ‘Regulatory climate’ showing a larger disparity of response than the
other factors. For the sub-factors (Table 6.30 overleaf) only two items have significantly
larger confidence intervals than the others. These are ‘Performance-based standards’ and
‘Improving OH&S’. Qualitative research investigations may be able to shed further light
on these issues.
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Table 6.30 Standard Deviation of AHP subfactor weightings
Sub Factor Standard Deviation
for 21 survey
responses
Personal motivation 6.1688 %
Available finance 3.8368 %
Available time 4.0911 %
Available skill levels 5.2679 %
Insurance and risk 3 0746 %
Procurement systems 5.3252 %
Client's characteristics 9.7552 %
Supply chain relationships 6.7816 %
Solving problems that occur on site 4.0054 %
Improving OH&S 12.1778 %
Professional and industry associations 8.8375 %
Research organisations and universities 0.092128
Performance based standards 11.9688 %
Industry standards 4.4076 %
Local authority regulations 8.5780 %
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Table 6.31 Standard Deviation of AHP factor weightings for small and medium sized businesses
Factor Standard deviation for small businesses
Confidence interval for 95% confidence level
Standard deviation for small businesses
Confidence interval for 95% confidence level
Company resources 11.51 7.14 12.32 7.28
Client and end-user
influences
16.11 9.99 11.29 6.67
Project-based conditions 11.46 7.10 18.57 10.97
Industry networks 13.24 8.21 16.25 9.60
Regulatory climate 19.21 11.91 18.48 10.92
F tests revealed no significant difference in variability between the two groups for each factor at 5% level (Black et al. 2009).
Confidence intervals are naturally larger when the sub-groups are considered because of
the smaller sample size but no significant difference in variability between the sub-groups
of small and medium sized enterprises was found.
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Table 6.32 Standard Deviation of AHP sub-factor weightings for small and medium sized businesses
Sub-factor SD small businesses
Confidence interval for 95% confidence level
SD for medium sized businesses
Confidence interval for 95% confidence level
Personal motivation 4.98 3.09 6.92 4.09
Available finance 5.01 3.11 2.55 1.51
Available time 5.14 3.19 3.06 1.81
Available skill levels 5.64 3.49 5.18 3.06
Insurance and risk 0.75 0.47 3.99 2.36
Procurement systems 5.70 3.53 6.99 4.13
Client characteristics 12.09 7.49 6.04 3.57
Supply chain relationships 4.56 2.83 8.27 4.89
Solving problems that occur on site
4.57 2.83 3.69 2.18
Improving OH&S 8.71 5.40 14.52 8.58
Professional and industry associations
8.23 5.10 9.29 5.49
Research organisations and universities
7.98 4.94 10.30 6.09
Performance-based standards
12.48 7.74 12.46 7.37
Industry standards 3.69 2.29 5.23 3.09
Local authority regulations
11.51 7.14 5.27 3.12
F tests revealed no significant difference in variability between the two groups for each factor at 5% level (Black et al. 2009).
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Table 6.33 Standard Deviation of AHP factor weightings for product and process innovators
Factor Standard deviation for product innovators
Confidence interval for 95% confidence level
Standard deviation for process innovators
Confidence interval for 95% confidence level
Company resources 13.10 7.12 9.67 6.70
Client and end-user
influences
12.98 7.06 16.62 11.52
Project-based
conditions
11.60 6.31 20.29 14.06
Industry networks 13.00 7.07 16.93 11.73
Regulatory climate 17.87 9.71 20.73 14.36
F tests revealed no significant difference in variability between the two groups for each factor at 5% level (Black et al. 2009).
As for the small and medium sized company sub-groups, confidence intervals are
naturally larger when the sub-groups are considered because of the smaller sample
size, but no significant difference in variability between the sub-groups of building
product and building process innovators was found.
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Table 6.34 Standard Deviation of AHP sub-factor weightings for product and process innovators
Sub-factor Standard deviation for product innovators
Confidence interval for 95% confidence level
Standard deviation for process innovators
Confidence interval for 95% confidence level
Personal motivation 6.43 3.49 5.34 3.70
Available finance 4.56 2.48 2.33 1.61
Available time 2.76 1.50 5.64 3.91
Available skill levels 6.00 3.26 4.23 2.93
Insurance and risk 3.71 2.02 1.64 1.13
Procurement systems 5.36 2.91 7.97 5.53
Client characteristics 9.87 5.36 9.79 6.79
Supply chain relationships
6.05 3.29 7.82 5.42
Solving problems that occur on site
4.43 2.41 3.55 2.46
Improving OH&S 8.20 4.46 16.49 11.42
Professional and industry associations
8.05 4.38 10.24 7.09
Research organisations and universities
8.39 4.56 10.59 7.34
Performance-based standards
11.22 6.10 14.56 10.09
Industry standards 5.29 2.88 1.67 1.16
Local authority regulations
10.17 5.53 5.96 4.13
F tests revealed no significant difference in variability between the two groups for each factor at 5% level (Black et al. 2009).
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Table 6.35 Standard deviation of AHP factor weightings for patent holders and non-patent holders
Factor Standard deviation for patent holders
Confidence interval for 95% confidence level
Standard deviation for non-patent holders
Confidence interval for 95% confidence level
Company resources 13.01 6.81 9.56 7.08
Client and end-user
influences
14.52 7.60 14.06 10.41
Project-based
conditions
14.45 7.57 19.74 14.62
Industry networks 13.40 7.02 17.82 13.20
Regulatory climate 17.84 9.35 21.25 15.74
F tests revealed no significant difference in variability between the two groups for each factor at 5% level (Black et al. 2009).
Once again, confidence intervals are naturally larger when the sub-groups are
considered compared with the whole sample, because of the smaller sample size.
Nevertheless, no significant difference in variability between the sub-groups of patent
holders and non-patent holders was found. Non-patent holders being the smallest
sub-group in the sample, exhibit the largest variability in their response and, therefore,
the largest confidence intervals.
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Table 6.36 Standard Deviation of AHP factor weightings for patent holders and non patent holders
Sub-factor Standard Deviation for patent holders
Confidence interval for 95% confidence level
Standard Deviation for non-patent holders
Confidence interval for 95% confidence level
Personal motivation 4.09 2.14 4.68 3.47
Available finance 6.07 3.18 2.61 1.93
Available time 2.05 1.08 1.38 1.02
Available skill levels 6.44 3.37 5.76 4.27
Insurance and risk 0.77 0.40 3.93 2.91
Procurement systems 6.60 3.46 8.78 6.50
Client characteristics 13.19 6.91 6.75 5.00
Supply chain relationships
7.43 3.89 8.32 6.16
Solving problems that occur on site
4.97 2.61 3.96 2.94
Improving OH&S 9.55 5.00 16.59 12.29
Professional and industry associations
9.20 4.82 9.85 7.30
Research organisations and universities
9.68 5.07 11.63 8.62
Performance-based standards
7.60 3.98 15.31 11.34
Industry standards 3.72 1.95 6.21 4.60
Local authority regulations
1.26 0.66 6.33 4.69
F tests revealed no significant difference in variability between the two groups for each factor at 5% level (Black et al. 2009).
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In addition, as previously stated in the case of this thesis, no strictly numerical
conclusions are to be drawn and no rating scheme is to be established. The data was
collected for the purposes of elucidating a process about which not a great deal is
known. Consequently inconsistency can be tolerated, particularly as the survey data
collection will be accompanied by qualitative exploration to determine some of the
reasons behind the inconsistencies.
6.14.2 Some possible reasons for inconsistency in the survey results
Forman and Selly (2001) identify clerical error as a common cause of inconsistency in
AHP survey responses. Particularly, they have noted that reversing the intended
preference for a pair of factors has been observed as a relatively common mistake to
make (Forman and Selly 2001, p.47). The researcher observed that some of the
respondents corrected themselves while entering their responses for the survey. They
were focussing on the numerical weighting of a particular factor, and almost ticked
the wrong side of the seventeen point scale compared to their verbal response. There
may have been cases that were not picked up. The researcher was, however, aware of
this tendency and when possible, asked for clarification if an answer appeared
ambiguous or contradictory to that which had been previously stated. In addition,
when the survey respondent opted to fill out the survey on paper rather than through
the laptop computer, the researcher entered the spoken responses on another copy of
the survey at the same time as the respondent. This picked up some potential clerical
errors and these were amended on the spot.
Another explanation for inconsistency in the survey results was raised in an
unprompted manner by nine of the twenty-one respondents during the face-to-face
survey interviews. It can be summarised as the matter of the temporal nature of the
factor ‗importance‘. A common comment was that the importance of the factors
varies over time, and in accordance with where you are in the innovation delivery
cycle. In an example frequently cited by the survey respondents, during the early
stages of development and testing, company resources are often critical, but they tend
to become less so as the innovation achieves market acceptance. The survey
respondents had all passed through this early stage and had achieved the delivery of
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their innovations to the market at the time of the survey. The respondents were
specifically asked to give their current ratings for the factors, not their importance at a
time in the past. Psychologically, this is hard to do for a complex process and
individuals may tend to remember somewhat erratically particular incidents in the
past when they answer some weighting questions and revert to the present day with
regard to other weightings. Inconsistency of weighting therefore results.
A difference of interpretation between the researcher‘s and the respondent‘s
understanding of the terminology used may be another possible explanation for
inconsistencies in the factor weightings. As some of the terms relate to complex
concepts, it may simply be that the respondent was thinking of different aspects of the
term at different times during the survey. Certainly, the survey prompted virtually all
the respondents to recount specific instances of the effect of a nominated factor on
their innovation process. They did this by way of explanation of their answer to the
survey question. The researcher noted down these comments at the time. On
reflection, the recounting of anecdotes during the survey could well result in
inconsistency of weighting because the flow of thought process is interrupted. As the
intention of the survey was to record the successful innovator‘s experience, it is
considered that it was useful to allow these interruptions to occur and to record their
nature for use in the selected case studies which form the basis of Chapter 7 of this
thesis.
The Analytic Hierarchy Process as represented in Expert Choice™ software does signal
inconsistencies in the data in real time and thereby allows the decision maker to address
any such inconsistencies. An individual decision maker can decide whether or not they
wish to change their weighting to avoid inconsistency. This would be particularly
appropriate when the process is undertaken in order to select an appropriate course of
action. In the case of this survey, however, the researcher opted to simply collect the raw
data in terms of weightings from the respondents without giving them the option to
address any inconsistencies.
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CHAPTER 7 SELECTED CASE STUDY EXEMPLARS OF INNOVATION DELIVERY
Chapter 7 reports the storyline of seven representative exemplars of successful
technical innovation delivery by SME construction contractors. The case studies
have been chosen because they are elucidatory of both the development process and
the actual realisation and delivery of a technical innovation in construction. They are
all high-level innovations which can be classified as ‘new to the country’ or ‘new to
the world’.
7.1 Case study purpose statement
The case studies presented in this chapter represent a collection of bounded delivery
process stories of technical innovation in the construction marketplace by
construction SMEs. These narratives of innovation delivery serve to contextualise
and enrich the data gathered in the AHP study. Seven specific examples of technical
innovations that have been successfully delivered are described and analysed for
convergent themes. All the technical innovations involve significant measurable
improvements to standard industry practice for the specific product or process
concerned. The improvements may be economic, environmental or OH&S based, and
some represent improvements in multiple fields. All have received peer recognition
as significant technical innovations from industry awards or via inclusion on the
innovation databases used in Chapter 5 to select participants for the AHP study. The
innovations may be ‘new to the world’ or ‘new to the country’ level of originality as
described in the Oslo Manual (OECD 2005). This represents a form of purposive
sampling known as revelatory case sampling (Teddlie and Yu 2007). The case
studies are chosen because they represent unique examples of a relatively rare
phenomenon; that is, the successful delivery of a high-level technical innovation by a
SME construction company. Collectively, they serve to illuminate the innovation
delivery process for construction SMEs.
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7.1.1 Explanation of case study significance
Yin (2003a & b) has explained that case studies can have several functions ranging
from exploration of individually varying circumstances to elucidation of typical
processes or features that are likely to recur. Manley (2008a) has demonstrated the
usefulness of case studies in the small construction enterprise context, as well as for
manufacturers subcontracting to construction projects (Manley 2008a; Manley
2008b). Leiringer and Cardellino (2008) are correct in cautioning about the potential
bias which may result from the innovator seeking to manage the outcome of the
research study for self-promotion. Neverthelesss, for the purposes of this thesis, the
case studies are intended to illustrate the variety and quality of innovations delivered
by SME firms in a limited region of the Australian construction industry based in the
greater Sydney and the surrounding area. It is not intended that these case studies
comprise the range of all potential types of technical innovation. Nor is it suggested
that the selected case studies represent the extent of achievement by elite performers
in innovation delivery by SMEs. Rather, the case studies are intended as exemplars
of successful innovation delivery which may be of interest to potential innovators
seeking encouragement from the achievements of others in the industry. As well as
these elucidatory storylines, some common factors may be present in several case
studies and these will be discussed in the last section of this chapter. It is intended
that the case studies provide useful examples of strategies and ‘best practice’ options
that can assist the delivery of technical innovation. The case studies may represent
useful storylines for encouraging less innovative sections of the industry to improve
their performance and consider trying new ideas.
7.1.2 Case study information
Several illustrations are included for each innovation case study, because
communication in the construction industry is primarily visual in nature and pictures
provide a significant amount of information that cannot readily be transmitted by
means of text only. This is particularly true as the intention of this chapter is to
describe the nature of technical innovations that have been successfully delivered to
market. Photographs of construction innovations often involve inclusion of some
individual workers involved in the process, but every effort has been made to ensure
that the individual’s privacy is not invaded, by using photographs that do not show
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recognisable individuals. All photographs are captioned as either by the author of this
thesis, or provided by the technical innovator. Trade names are used in this chapter in
order to recognise the considerable contribution made by the individual developers of
technical innovations to research in this field of applied endeavour, rather than to
publicise the individual innovation. The researcher has no financial or other interest
in any of the innovations presented as case studies. They have been chosen as
representative of some of the different kinds of technical innovation described by
Slaughter’s taxonomy of technical innovation (Slaughter 1998) as described in Figure
2.5 on p.44 of this thesis. The case studies have also been selected on the basis of
their peer recognition as successful high-end innovations and on the participant’s
willingness to assist with the research aim of presenting successful exemplar
storylines in order to encourage other potential innovators.
7.1.3 Case study identity disclosure
Information on the seven case studies was gathered from several sources including
trade literature, industry focused magazines, company websites, testimonials, site
visits and personal observation. An interpretive approach was taken to the case
studies and the researcher’s aim, following Seymour and Rooke (1995), is to report on
the perspectives of the participants in their particular settings. For this reason, trade
names are identified in the case study chapter, although they were not used in the
AHP study. The author gratefully acknowledges the assistance of the innovating
firms in the preparation of this chapter.
Yin (2003) discusses the question of whether case studies should be “real or
anonymous” (Yin 2003a p.157). He concludes that the most desirable course is to
disclose the identities of the case studies. This has the advantage of allowing the
reader to recall any previous information he or she may have learned about the case
from other sources and thus integrate the case study with previous research
knowledge. Even more significantly disclosure allows for the cases to be more
readily peer reviewed and for appropriate criticisms to be raised about the
interpretation of the case studies. The use of real company names in this
circumstance thus aids the intellectual rigour of the study, because it is possible for a
reader to repeat the case study research and either confirm or dispute its conclusions.
Anonymity is only required for case studies where there is some area of privacy or
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delicacy involved for an individual participant. The names of individual company
leaders are not given in this thesis as this would be considered an unnecessary breach
of privacy. Company names, however, do not involve similar privacy issues. In the
case studies presented here, the companies are actively involved in publicising their
innovation and were supportive of the academic publication of their stories. The case
studies focus on the building product or process and not on the individual people who
responded to the AHP survey or their private opinions. The case studies were
selected from the innovations delivered by some of the respondents to the AHP study,
but due to ethical considerations it is not possible to match the case studies with any
individual responses given to the AHP study. As previously mentioned, the
individual responses in the survey have been de-identified to ensure anonymity and
only aggregated data is presented. Each of the seven case studies will now be
discussed individually.
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7.2 Case study 1: Rapid setting volumetric concrete
Volumetric Concrete® mixing combined with RapidSet™ cement is a radical system
change which has potential to replace a significant proportion of the agitator type
rotary mixer concrete trucks that produce most concrete in all but remote areas today.
It can also replace on-site mixing as still used on remote sites where ready-mixed
concrete is not available. Ready-mix concrete has taken up an increasing percentage
of the Australian market since it was first offered in a widespread manner in the
1960s. It is an efficient system for delivery of concrete to building sites, but relies on
accurate estimating of the amount of concrete required for a particular job. Over
ordering can often result in significant wastage. Volumetric concrete mixers include
all mixing devices that measure the raw materials using volume rather than weight to
produce a concrete mix. The volumetric system studied here involves custom-made
trucks which carry three separate bins for aggregate, sand and cement in dry form plus
a water tank. There is also an integral chain fed conveyor belt under the bins to feed
the chute where all the mixing happens. The mixes are measured with great accuracy
by the machine, and an onboard computer allows the operator to vary the mix via the
control panel. Concrete is only mixed as it is used, so there is no over-ordering and
virtually no wastage. Only the small amount of concrete in the enclosed three metre
long chute as the pour finishes would ordinarily be wasted. One truck can service
several sites a long distance apart without any concern about the mix going off in the
truck, or the need to add plasticisers or other additives which decrease the quality of
the concrete. Rear discharge volumetric concrete mixers were originally developed in
the United States (Cooper 2006). They are regarded as the new generation in concrete
mixers, but constitute a ‘new to the country’ innovation in Australia (Volumetric
Concrete Australia 2010).
In addition to the savings in avoiding waste, the system has the added advantage of
being able to economically produce rapid setting concrete. The rapid setting cement
used contains no chlorides, accelerators or water reducing additives. The use of rapid
setting concrete means that repair work or critical tasks can be performed with
considerable time savings. This is demonstrated by the fact that a slab poured using
this system develops sufficient strength to be trafficable within a few hours of being
poured rather than a few days (see Figs. 7.1 to 7.6). Such speed of operation makes
the system particularly suitable for road and runway repairs and extensions, as the
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time between concrete pour and functional operation is greatly reduced. Reductions
in material wastage and time savings in many cases make the use of the more
expensive rapid setting cement a viable proposition.
This was illustrated by repairs completed to the Qantas Domestic Terminal apron at
Sydney Airport in early 2009. Demolition and replacement of sections of cracked
concrete was undertaken during the airport curfew hours of 11pm to 4am. The
replacement slab was trafficable by 6am. Consequently, there was no need for partial
closure of the airport facility and resultant delay and rescheduling costs were avoided
(Volumetric Concrete Australia 2010). Conventional concrete delivery could have
required a week-long shutdown of the area concerned. The flow-on cost to the
economy of any sort of airport shutdown has been demonstrated during recent
extreme weather events experienced in several parts of the world in 2010. While this
system does not address closures of that sort, it does avoid minor shutdowns for
maintenance work on aging infrastructure which could be both costly and disruptive.
This market niche of ‘rapid repair’ is the immediate area of useful application for the
volumetric concrete delivery system; along with small volume concrete jobs and
remote location concrete. It is believed by the innovator that increasingly the system
will prove competitive with standard ‘ready-mix’ concrete delivery for a wide variety
of applications.
The photographs in Figures 7.1 to 7.8 were taken by the researcher at an industry
open day in April 2010. The system was demonstrated by the pouring and finishing
off of a small slab followed by a one hour break after which the concrete truck was
driven onto the recently poured slab. No defects were observed in the new slab
despite careful inspection by the assembled interested parties.
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Figure 7.1 Volumetric concrete mixer with separate bins for cement, sand and aggregate
Figure 7.2 Mixer getting ready to pour
Photos Hardie
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Figure 7.3 Pour has commenced
Figure 7.4 Pour complete and slab being finished off
Photos Hardie
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Figure 7.5 Resin-based curing compound being sprayed on slab
Figure 7.6 One hour after the pour, the mixer truck is driven onto the new slab
Photos Hardie
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Dust extractor technology is being developed and has been recently added to the
system in order to ameliorate any adverse effects on concrete workers of the dispersal
of small particles of dry cement dust during the concrete mixing process. The system
has additional OH&S benefits in that it does not require unsafe speeding up of
concrete pours when the mix is close to going off.
7.2.1 Slaughter’s taxonomy
This is a ‘Radical’ innovation under Slaughter’s terminology. It involves a new
approach which is likely to lead to major changes in the industry. It enables repair
and replacement of concrete structures in a much faster time frame than is possible at
present. Its current most appropriate applications are in civil works; particularly road
and runway repair and duplication. The speed with which the resulting slabs develop
their full working strength will have significant consequences for construction
scheduling and the economic benefit of the material waste reduction will require those
who stick with the existing system of concrete batching plants and agitator type
delivery trucks to find efficiencies of their own in order to compete. This is a
‘shooting star’ type innovation which breaks new ground for the construction industry
and opens up a plethora of new possibilities.
7.2.2 Strategies that support successful innovation delivery
Regular open day demonstrations at the innovator’s premises are used to explain the
technology to industry representatives and potential users. Such demonstrations are
carried out in combination with associated companies who wish to display their own
innovations to interested potential contractors and clients. The innovator in this case
puts a great deal of time and effort into networking within the industry and with
government and commercial client groups. An innovation which involves significant
changes in attitudes from current standard practice needs to court lead-users, and
especially large clients, whose projects are likely to get wide exposure in the industry
through technical magazines and industry publicity. Industry awards are also actively
sought by this innovator and several have been received from the Civil Contractors
Federation.
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Figure 7.7 Industry Open Day demonstrations held every few months
Figure 7.8 Industry demonstrations of related products
Photos Hardie
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7.2.3 Innovator comments
The innovator sees the major benefits of this system-changing innovation as the
following: a reduction in truck movements and waiting times on site; resultant
reductions in carbon emissions due to fewer truck trips; less wastage of concrete
particularly in hard to estimate jobs involving excavation; and no unstable cold joints
as a result of waiting for concrete deliveries to arrive. While monetary savings are the
strongest driver of this innovation, efficiency savings, time schedule savings and
reductions in pollution from concrete construction are also significant. OH&S
concerns relating to concrete dust released to the atmosphere on the work site are
being closely monitored and addressed by careful work site supervision and practice.
7.2.4 Lessons from this experience
The delivery of this innovation has been supported by conscious and organised
attempts to spread awareness of the system throughout the industry, including among
potential clients and competitors. Networking with other businesses is fostered
through the regularly scheduled open day demonstrations and the contacts that are
made there. Careful follow up is practised of queries raised during the
demonstrations. Surveys are taken at each open day and these results as well as open-
ended comments are analysed and receive follow up if necessary.
This innovation delivery process is a clear example of placing great importance on
communication and market research. Knowing that it would be necessary to
overcome entrenched attitudes about the superiority of the existing system of concrete
delivery, the innovator in this case has adopted a very open strategy with technical
information about the new system. Attendees at the open days are encouraged to
voice any scepticism about the innovation and where possible technical responses are
given. This openness to industry scrutiny is a necessary process for an innovation
which seeks to change standard practice in an established field. If lead-users in large
companies or in government procurement agencies can be convinced of the
effectiveness of the innovation, then adoption of the innovation is likely to be
relatively rapid.
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7.3 Case Study 2: Lightweight impervious concrete block
Benex Blocks™ are lightweight concrete blocks with superior acoustic properties, fire
rating and impact resistance when compared with other lightweight concrete blocks.
They are impervious to water and require no vapour barrier or tanking when used as
basement walling. The blocks contain expanded polystyrene beads in a concrete
medium. This produces the lightweight and waterproof characteristics which are the
principal innovative feature of the block. Construction time is rapid, no applied finish
is necessary and minimal clean up is required. The system reverses the ratio of
skilled to unskilled labour required for construction of masonry walls. The base
course for any wall is laid in mortar in the same manner as traditional block-work
and, as such, requires experienced and skilled block-layers to accurately set out the
walls. Subsequent courses are laid in adhesive and are locked in place by the integral
connecting lugs on the joining surfaces (these are illustrated in Figures 7.9 and 7.10
pp.216-217). These courses can be completed by unskilled labourers with
comparatively brief training and a high standard of finish can be produced (Bennett
2006, 2007). In the current industry climate, this means that the widespread shortage
of tradesmen bricklayers/block-layers can be addressed by using less skilled labour to
produce an outcome of a similar standard in a faster timeframe.
With the aid of specially designed hardware that fits over the core openings, the
blocks can be core filled in both the horizontal and the vertical dimensions. This
enables detailed engineering of walls for heavy load situations or reactive sites.
Typically, every fourth core is filled vertically and a horizontal tie beam is poured in
one course in every story. Blocks can readily be cut with a diamond tipped saw and
nails and screws can fix directly into the block-work. Special lintel blocks and wall
closer blocks are available in the same material as the standard block.
The blocks have been tested for fire rating, water penetration, thermal resistance,
acoustic properties, resistance to salt attack and structural strength by various testing
authorities including Commonwealth Scientific and Industrial Research Organisation
(CSIRO). The reports and certificates mentioned below are available on the company
website (Benex Technologies 2008). The blocks have achieved a fire rating (Fire
Resistance Level) of 240/240/240 for structure/integrity/insulation (CSIRO test
certificate 2042, 2007). Water penetration tests were based on ASTM E514-06 which
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is known as “Standard Method for Water Penetration and Leakage through Masonry.”
This test is normally terminated after four hours, as masonry generally fails the test
well before the four hour period has concluded. The innovator’s block wall did not
fail within the 4 hour period, so it was decided to continue the test for a total of 24
hours. The block had not allowed any water to pass through at the end of the 24 hour
period. The wall was untreated and the standard block and adhesive were used. No
special installation methods were adopted. CSIRO experts concluded that a properly
built wall from these blocks can resist the conditions imposed by the ASTM water
permeability test for more than 24 hours, without failure (CSIRO Report on Job
number JK13ATS346 8).
Thermal resistance has been shown to be equal to or superior to that of other concrete
block products (BRANZ Report no.EC 1310, 2007). Sound Transmission Class
(STC) and Weighted Sound Reduction Index (Rʷ) were tested and found to meet or
exceed BCA requirements (CSIRO Report TL474, 2007). CSIRO testing also
confirms that the blocks can be used in a saltwater environment without failure or
deterioration.
Finally, the block’s structural qualities are equal to that of competing concrete block
walls and much stronger and more impact resistant than Autoclaved Aerated Concrete
blocks (commonly known by the trade name Hebel™ blocks). It is not within the
scope of this thesis to confirm these technical tests on the block’s performance. It is
merely reported here to explain that testing has been performed by the appropriate
authorities and the blocks have been shown to perform well. It is likely that they
equal or exceed the performance of the existing hollow concrete blocks that are their
main competitor in most areas.
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Figure 7.9 Block dimensions Image Benex
Figure 7.9 above illustrates the integral connecting lugs that are used to locate the
block courses and to ensure the finish quality of the completed block-work wall. The
narrowness of the vertical joints between the blocks is also illustrated. This results
from the blocks being bonded with adhesive rather than traditional mortar. The result
is an acceptable finish without an additional cladding or lining, although lining
internally with plasterboard is optional should that be the desired finish.
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Figure 7.10 Block details
Image Benex
Figure 7.10 above further illustrates the block with isometric and end views. It may
be noted that the blocks have a larger percentage of void space than traditional
concrete blocks. This is achieved without any subsequent loss of strength. Along
with the inclusion of the expanded polystyrene beads this feature what makes the
blocks lightweight and relatively easy to manage and handle, even by inexperienced
block-layers.
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Figure 7.11 Lightweight impervious concrete block
Photo Benex
Figure 7.12 Cut block showing polystyrene bead interior Photo Hardie
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7.3.1 Slaughter’s taxonomy
Under Slaughter’s taxonomy, this is a ‘Systems’ innovation. There are multiple
changes within the blocks themselves when compared to standard concrete blocks, as
well as significant changes to the other construction systems that connect to the block-
work. The need for tanking in underground situations is removed, enabling the
elimination of a problematic wet trade from the construction process. The amount of
reinforcement required and the number of columns which need to be poured are both
reduced when compared with standard concrete blocks.
7.3.2 Strategies that support successful innovation delivery
In order to achieve market recognition, this innovation has been presented on
television (Australian Broadcasting Commission’s The New Inventors), as well as at
various trade fairs and through conferences of professional organisations such as the
Australian Institute of Building. The company provides training packages for other
builders who want to use the product, as well as training unskilled labour to lay the
blocks. This is done with the aid of several government income support and job
readiness schemes for the long-term unemployed.
Some resistance to the increasing market share of the product has come from existing
producers of concrete blocks. There are reports that competitors have spread
misinformation about the performance of the blocks to local building inspectors in
some areas. This has to be countered by the dissemination of verified performance
test results from respected authorities such as CSIRO and NATA. The blocks can
produce a 4 hour fire rated wall without filling all the cores, whereas standard
concrete blocks meet this standard only when all cores are filled. This represents a
significant saving on existing concrete block-work.
Feedback from early installers indicated that a standard glue gun applicator could not
deliver the large quantity of adhesive necessary to lay a block wall at the speed that
workers could put the blocks in place. Consequently, a purpose-designed large
volume applicator (made initially from 100mm poly pipe) was developed and is
delivered as part of the installation system.
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Figure 7.13 Retaining wall to garage not requiring waterproofing
Figure 7.14 Upper storey walls under construction
Photos Hardie
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Figure 7.15 Block wall under construction showing closer blocks
Figure 7.16 Internal wall face to be finished with plasterboard
Photos Hardie
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7.3.3 Innovator comments
The innovator described the main advantage of his construction system as being a
very rapid construction method, requiring very little worker training to produce a high
quality finish. Exceptional performance is achieved at a competitive price. Owner
builders have shown considerable interest in the product. The innovator is seeking
larger projects such as public buildings, in order to lift the profile of his product, so
that it will be considered as an alternative throughout projects where load bearing
masonry is currently used. Largely as a result of their thermal properties, the blocks
have been used for the Green Skills Trade Centre at Orange TAFE College in western
NSW in 2010. A comparison of the relative cost and time properties of the blocks
compared with their major competitors was supplied by the innovator. This is shown
in Table 7.1.
Table 7.1 Comparison of blocks with alternatives available
Feature Benex Block™ H600 core filled
Standard core filled, fire rated concrete block
Hebel Block 200 mm Thermoblock™
Finished cost/sq m (unpainted) March 2010
$140-$160 $180-$210 $125
Fire rating – Structural/Integrity/Insulation (hours)
240/240/240 240/240/240 240/240/240
Installation speed in m² per day
25-30 9-12 15-20
Dampcourse and moisture barrier required for water resistance
No Yes Yes
Additional finishing material required (external render or internal plasterboard)
No No Yes
Freight cost for delivery to site Low Medium Low
Screw fix direct to wall surface Yes No Yes
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As the Table 7.1 illustrates the Benex block system is quicker than both other
alternative options listed. It is more cost effective than standard concrete blocks and
is comparable in cost to Hebel block when the need for additional finishing material is
added.
7.3.4 Lessons from this experience
The reduction in the need for skilled labour to produce a quick and high quality result
is a feature of this innovation and the source of much of its economic
competitiveness. While the blocks have not yet achieved a slice of the market which
affects the prospects of traditional brick- and block-laying, they have the potential to
do so. As Seymour and Rooke (1995) have noted, innovation often leads to old skills
becoming redundant. Whether these blocks and other interlocking masonry products
will have this kind of impact remains to be seen.
Whatever the long term impact will be, this kind of block is significantly different
from its current competitors in the market, so it has been necessary for the product
innovator to invest in a great deal of independent testing to verify claims that are
made about the product. The test certificates are available on the product web pages
(Benex Technologies 2008) in order to reassure potential customers of the reliability
of the product.
The development of this innovation involved the study and usage of processes
developed in other industries. The process used for temperature control and curing
the concrete blocks is adapted from conveyor systems used in food processing.
Learning lessons from other industries is not often done in construction, but it is a
largely untapped source of potential innovations.
Large institutions such as universities often have a regular building program to
expand and upgrade their existing facilities. Targeting property managers from such
institutions with information about innovative products can prove a useful strategy to
spread the word about new construction systems. This is particularly true for
innovations that are attempting to gain market share in an area already well serviced
by existing technologies.
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7.4 Case Study 3: Under floor water storage bladders
WaterCell™ is a series of under floor water bladders connected to roof water
collection pipes. It is used as either partial or full replacement for mains water. Many
Australian cities and towns have experienced severe water shortages in recent years
and it is widely believed that this is an ongoing problem due to the combined effects
of population increase and global warming. The water storage bladder system
comprises an engineered, high volume rainwater harvesting, storage and reticulation
system which forms an integral part of a new building and can, in some cases, be
retrofitted to an existing one (Ball 2006).
The WaterCell™ system is entirely contained within the building footprint and
according to the producer; the components are accessible, serviceable, maintainable,
replaceable, recyclable and affordable. The storage cell is manufactured using
recyclable polyethylene which complies with both US and European standards for
food contact and drinking water storage. The technology delivers an immediate clean
water supply for a project, simultaneously eases the demand on the existing
centralised water supply system, extends the life of existing stormwater infrastructure,
and significantly reduces the cost of new stormwater infrastructure for the lifetime of
the installation. It can deliver a potable water supply at a reasonable and sustainable
cost to all kinds of buildings. Researchers at the University of Newcastle, Australia
have established that such water supply systems can provide safe, high quality water
to complement mains water supply (Kuczera 2008; Coombes and Kuczera 2003).
The system is normally located in the sub-floor space, but can be situated in any area
that can be allocated to the storage of water. It is competitively priced compared to
other water storage systems such as water tanks and water storage gutters.
A storage cell is a non-structural element, which takes the shape of its container. The
typical storage cell is 6 metres x 4 metres x 0.7 metres deep and has a storage capacity
of 16,000 litres. Each storage cell is a welded, closed bag, manufactured from thin,
flexible, impermeable, non-toxic, hygienic material and fitted with integral inlet and
outlet spigots. Any number of storage cells can be connected in series. The plumbing
system allows additional storage cells to be added in series at any time, and can allow
any particular storage cell or cells to be isolated, removed or replaced when required.
Each empty cell weighs 28 kilograms and is warehoused and transported in a
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cardboard box measuring approximately 1 m x 1 m x 0.2 m. This can be handled by a
single person with the use of a light trolley (VisionWater 2008). There are several
companies producing water storage bladders in various forms but the WaterCell®™
version is an integrated system that is easily transportable and is designed to reduce
the use of mains water in climatic conditions such as that of the greater Sydney area
by up to 85% compared to normal water usage (Coombes 2002). It is covered by
international patents (Ball 2006).
Ease of transportation is a major benefit of these water bladders over precast concrete,
plastic or galvanised steel water tanks that are in common use in Australia. Tanks of
similar capacity to the bladders need to be transported on large trucks and require site
access that is not available in some narrow streets or on steeply sloping sites. As the
individual bladders can be easily handled by one person, they can be placed in
position even when access is restricted by confined site layout and existing building
structures. For the same reason, it is also possible to use the bladders in some retro-fit
situations where tanks are unsuitable. Potential manual handling injuries from lifting
during installation are also avoided because of the light weight and compact nature of
the bladders compared to steel and concrete tanks.
Because the bladders are installed in out-of-sight locations under floors of houses,
they do not have the visual impact of water tanks which some residents find
objectionable. This is an issue in some residential areas where existing residents may
oppose the installation of tanks because they are perceived to be an eyesore. Attitudes
of this type may be changing with greater environmental awareness among the
broader community but the issue is circumvented if the bladders are used rather than
tanks. If a new technology can be designed to have minimal aesthetic impact on the
existing built environment, then this is likely to assist in the adoption process.
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Figure 7.17 Building design to incorporate sub-floor water bladders
Figure 7.18 Water bladder compartments in sub-floor space
Images WaterCell®
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Figure 7.19 WaterCell® being installed
Figure 7.20 Full WaterCell® in place
Photos WaterCell®
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7.4.1 Slaughter’s taxonomy
This is a ‘Systems’ innovation according to Slaughter, as it involves large changes to
the element itself (water storage units) as well as multiple changes to its linkages with
other elements. The floor space of the building needs to be designed in modular
compartments which can accommodate the water bladders. The roof plumbing of the
building needs to be connected to the bladders and the water stored in the bladders
needs to be piped to particular outlets such as toilet cisterns and garden hose cocks.
7.4.2 Strategies that support successful innovation delivery
The marketing strategy for the product targets end-users with desire to build
sustainably and who nevertheless want a cost effective solution to the provision of
fresh water in an environment, where the rainfall falling on a property is regarded as a
resource that can no longer be ignored. The system comes with advice about applying
for Government rebates and is supported by local council authorities in the
innovator’s region.
7.4.3 Innovator comments
The innovator stressed the potential of the water bladders to replace mains water
consumption as a significant contribution to likely water shortages as a result of
climate change. Particularly in coastal NSW, where rain falls in irregular patterns but
often in significant amounts at individual rain events, it is possible to greatly reduce
pressure on the available potable water supply with the use of this innovation.
Ongoing monitoring of completed projects is being undertaken to insure the validity
of these claims. It is preferable that the water bladder storage is used for regular
draw-down purposes such as toilet flushing and washing machine operation. If the
intention is to use the water only for landscaping purposes, the water can remain
unused for long times during rainy periods. This results in a sub-optimal usage.
7.4.4 Lessons from this experience
Close alignment with the strategies espoused by public utilities which provide
services to new development can assist the delivery of a technical innovation. This
innovator also had close ties with a regional university in the area which assisted in
modelling of the potential benefits of the system, as well as verification of the
effectiveness of the delivered system.
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7.5 Case Study 4: Cylindrical concrete formwork tubes
Ezytube™ is a spiral, lined formwork tube for off-form finished round concrete
columns. The tubes consist of multiple layers of thin water resistant paper and high
tensile strength plastic coated mesh. The tubes are light-weight which saves on
cranage costs, as tubes of up to 4.5m long by 600mm diameter can be safely handled
by a single worker in most cases. The tubes are weatherproof and can be stored easily
on construction sites. They save labour due to their fast and simple installation
requirements, as well as through the rapid removal process using an inbuilt ripcord.
They are very safe to use and no grinders or electric tools are required to trim, remove
or cut the tubes before placing in waste bins, as would be the case with metal form
tubes. The strong multilayer structure, nevertheless, provides flexibility and ensures
improved impact resistance when compared with single seam spiral tubes. During
transportation, the tubes may at times become distorted or ‘out of round’. According
to the producer, this is not a significant problem, as the tubes can normally be pushed
back into shape prior to fitting. Even if this cannot be done, the tube will attain a
round form when filled with concrete despite being slightly distorted prior to filling.
The tubes can be transported in either a vertical or horizontal position. In order to
contain freight costs, each of the different diameter tubes fit within the internal
diameter of the next larger size. In other words, 400mm fits inside 450mm, which fits
inside 500mm and so forth (Ezytube Pty. Ltd. 2009).
The particular advantage of these tubes over other removable formers available on the
market is the ease of stripping from the completed column. Forms are often left in
place until just before hand over of the building as they can prevent scratching and
other damage during construction and fit out of the building. When required they can
either be stripped with a knife or by using the ripcord feature installed for some of the
tubes.
When the ripcord function is not installed, after sufficient curing time has elapsed, the
base supports are removed and a Stanley knife (or similar implement) is used to
perform a straight vertical cut from the top of the tube to the base. An additional cut is
then made around the full circumference of the tube approximately 100mm from the
soffit or support beams. The two sections are pulled apart and the form can be easily
slid from the concrete column. One person can perform this operation, generally in a
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few minutes per column. For best finished results with lined tubes, the form should
be cut in line with the marks on the outside of the tube which indicate the location of
the internal plastic join. When the ripcord feature is used, the process is even quicker.
Somewhat similar products are available internationally, but the features of this
particular system make it unique in the current construction market as indicated by
international patents held by the innovating company (Adams and Villaescusa 2005;
Adams and Villaescusa 2009).
Figure 7.21 Formwork tube being put in place
Photo Ezytube
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7.5.1 Slaughter’s taxonomy
In Slaughter’s taxonomy of construction innovation, this would be regarded as an
‘Architectural’ innovation with relatively small changes to the element that enable
considerable change to the efficiency of the concrete pour process and, therefore, the
project delivery.
Figure 7.22 Formwork tube being removed
Photo Ezytube
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7.5.2 Strategies that support successful innovation delivery
The delivery of this product innovation is strongly dependent on long experience in
the concrete formwork industry, along with thoroughly organised feedback loops
between the product supplier and its on-site installers. This is an innovation
conceived and generated by individuals with practical experience of the quality
assurance and timing issues involved in concrete form-working. Considerable effort
has gone into training packages for workers using the product for the first time.
Instructional CDs are provided and these give particular emphasis to site safety as
well as to quality assurance.
7.5.3 Innovator comments
The innovator stressed that the inspiration for this product was the need to provide
safer and more economic methods of forming concrete columns. Emphasis on ease of
operation, complying with limits for manual lifting and the designing out of potential
injury hazards from the system were critical factors inspiring the delivery of this
innovation. OH&S matters are receiving increasing attention in the concrete forming,
pouring and stripping processes because of a history of frequent musculo-skeletal
injuries to workers in this area. The attention is unsurprising given that the
construction industry’s hospitalisation rate for injured workers is significantly higher
than the hospitalisation rate for all other industries. It is currently running at over 100
more hospitalisations per 100,000 workers than the average for all industry employees
(Australian Safety and Compensation Council 2008). Manual handling issues are the
most common cause of workplace injury for concreters. It is likely that such statistics
will drive further innovation in construction products and processes aimed at reducing
the frequency and impact of significant injury on construction sites.
7.5.4 Lessons from this experience
Effort spent informing the workers who actually use an innovative product of its
benefits is considerably more effective than providing this information to designers
and product specifiers. This tends to be overlooked by many technical innovators and
can result in the failure of a good idea to achieve market penetration. The actual
delivery process for the innovative product is reliant on the level of understanding of
those who deploy it, rather than those who select the product, but who are not
involved in responsibility for checking the end result.
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7.6 Case Study 5: Salt-removing sacrificial render to restore
deteriorating masonry walls
Cocoon™ desalination poultice is a sacrificial render that can be sprayed or trowelled
on to a masonry wall in order to remove the accumulated salt build up caused by
rising damp. This build up is a significant cause of deterioration in historic and
heritage masonry buildings. Indeed a UK specialist in the repair and conservation of
historic building has stated that:
“Soluble salts are a principal agent of decay in porous building
materials and a source of great frustration to those involved in the
conservation of historic buildings.” (Woolfit 2000).
In such buildings, there may have been inadequate provision for a Damp Proof
Course (DPC) to prevent capillary action, causing salt-laden ground water to be
absorbed into the soft masonry fabric of old brick or stonework (Cooper 1999).
In order to remove these salt deposits a render coat is applied to the affected surface
area. The render consists of an 8mm to 10mm thick layer of creamy paste in a
distilled water medium. It has a PH of 8 and contains no reactive chemical
compounds. The active constituent is pharmaceutical grade filter paper pulp.
Diatomaceous earth particles in the pulp have fine fibres which attach to the salt
particles in the masonry wall. The normal practice is to apply a first render coat
which is left in place for two weeks to allow the salt particles to be absorbed by the
render. The first coat is then easily peeled off and another coat applied and also left
for two weeks. After this, the second coat is removed. The end result is that almost
all the deposited salt on the masonry surface is removed and deterioration of the
fabric due to salt damage is either greatly reduced or halted altogether. The
applications result in a dramatic improvement in the appearance of the masonry and
do not need to be repeated for several decades under normal circumstances. The
product was first developed for the restoration of the convict-built structure in Sydney
Harbour known as Fort Denison (see Figures 7.23 and 7.24 overleaf). Located in a
tidal area, the sandstone structure had been subject to damage from dissolved salt
from salt water for over a hundred and fifty years. The salt removing poultice
performed more successfully than any other potential solution available at the time.
This led to its use on other historically significant buildings such as Elizabeth
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farmhouse in Parramatta, NSW (see Figures 7.25 and 7.26, p.233). The system has
also since been used on heritage buildings in many parts of the world, some of which
were of considerable antiquity (Westox Building Products 2010). An example of
these is the Duomo in Pisa, Italy where marble friezes have been successfully treated.
Figure 7.23 Fort Denison in Sydney Harbour
Figure 7.24 Salt affected stonework
Photos Westox
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As can be discerned from Figure 7.24, salt damage to historic masonry buildings is
more than just cosmetic in nature and can lead to long-term deterioration in the
strength of the wall, as well as, unsightly surface erosion. This damage builds up over
long periods of time, but the two stage treatment with the sacrificial render can
provide a building with many additional years of functional life, while restoring an
acceptable level of finish to the masonry surface.
Figure 7.25 Elizabeth Farmhouse in Parramatta, NSW (c 1790), one of the oldest European
structures in Australia
Photos Westox
Figure 7.26 Sacrificial render in place at Elizabeth Farmhouse and later being peeled off
Photos Westox
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7.6.1 Slaughter’s taxonomy
This innovation would be regarded as ‘Modular’ according to Slaughter. The actual
element itself, the sacrificial render, is a big departure from previous practice. The
render system is patented and represents a means of successfully treating a problem
previously considered intractable (Cooper 1999). It does not, however, require any
significant modifications to any other building processes involved with the restoration
of old masonry structures. It is essentially a fully-bounded innovation as defined by
Harty (2005).
7.6.2 Strategies that support successful innovation delivery
Since this is a highly specialised area of building, successful delivery of the
innovation requires that people responsible for decision making about historic
building restoration know of the potential of the salt removing treatment. This has
been done primarily through a web site that contains an animated explanation of how
the process works plus numerous case studies of its successful application. ‘Word of
mouth’ is highly significant in the dissemination of information about this innovation.
A process like this one, however, needs to be global in its approach and the internet is
the primary way of achieving international product recognition for the process.
7.6.3 Innovator comments
This innovation was driven by the innovator’s investigation of what was widely
regarded as an intractable problem; namely the disfiguring build-up of dissolved salts
on the surface of masonry. As a plasterer by trade, who had come to specialise in the
restoration of masonry surfaces in heritage buildings, he actively sought possible
existing solutions before experimenting with a potential solution of his own devising.
He also had a quantity of pharmaceutical grade filter paper available due to an
unrelated business deal, so he determined that it might be possible to use something
that he had available to solve a problem that he commonly encountered. Considerable
research, development time and expense were required to bring the initial idea to the
market as a successful solution to the problem. Similar poultice-based systems have
been suggested by conservationists, but effective solutions are not commercially
available to any great extent (Woolfit and Arbrey 2000). The issue is commonly
treated on a small-scale case-by-case basis.
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7.6.4 Lessons from this experience
In order to achieve acceptance for this process in building conservation circles, the
innovator has found it necessary to ‘start from scratch’ in each new country where the
system is introduced. Reports of previous success in other countries appear to carry
very little weight with the guardians of heritage buildings. In each new market, the
system needs to be extensively re-tested under local conditions before gaining
acceptance.
Often alliances and partnerships need to be formed with local companies in order to
have the process approved in the national jurisdiction. This has had to be accepted as
a condition of the business environment. Each new regulating authority is approached
and taken through the process of verifying the safety and effectiveness of the system
according to its own building and heritage standards.
Due to the highly specialised nature of the process, information about the system on
the company website is offered in ten languages in an attempt to address the
international communication issue. Video footage of several case studies employing
the process, both in Australia and internationally, have been made available on the
website (Westox Building Products 2010). The website also provides a very clear
explanation of how the process works in animated cartoon form. Such
communication and awareness raising measures are likely to be required for any
technical innovation which has a market in heritage buildings, because there is a long
history of poor and ineffective restoration processes which showed early promise of
delivering positive outcomes. Innovators need to be aware of the precautionary
approach that is usually taken by heritage guardians to any new process. Care needs
to be taken when building treatments are not reversible. Consequently, new solutions
are necessarily greeted with a fair degree of scepticism in matters that affect heritage
buildings. It is up to the innovator to reassure regulators and provide solid evidence
of the efficacy of any change.
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7.7 Case Study 6: Rollover warning system for articulated
construction plant
ROPS2™ is an early warning and function management system designed to reduce
the risk of mobile plant rollover. The system monitors axial machine angles and
warns the operator of impending dangerous angles. If the operator persists, the lock
out function is activated and the system immobilises the equipment. Developed for
vibrating rollers, the system is capable of being fitted to most mobile construction
plant. The system is needed, because operator perception can often be inaccurate
when assessing the risk of rollover. This is especially true for articulated vibrating
rollers that oscillate at their articulation joints. In most cases, the operator station is
fitted to the rear of the machine and the vibrating drum to the front section. When
working on uneven ground, the operator does not always move with the front section
of the unit. In other words, there can be an angle variation between the two sections
of the roller. When the machine is reversing and the operator is looking in the
direction of travel, the drum would not normally be in the operator’s field of vision.
The ROPS2™ system fitted to the front of the machine warns the operator with both
visual and audible alarms when the roller drum is at an unstable angle. The lock out
function of the system reduces the risks associated with operator error, complacency,
panic and slow reaction time. An additional safety feature is a seat belt sensor that
maintains park brake application and prevents travel unless the seat belt is engaged
(Ibrahim 2007). Appropriate operator training is still required, but the system greatly
reduces the margin for accident and injury caused by operator error (Conplant Pty.
Ltd. 2008). While plant rollover is not among the most common causes of worker
injury in the construction industry, when an incident does occur, it is comparatively
more likely than other incidents to result in a fatality. There were 16 recorded
fatalities in Australia in 2007-2008 from rollover incidents involving farming, mining
or construction machinery (Safe Work Australia 2010).
This case study represents another example of an innovation focussed on improving
OH&S outcomes in the construction industry. The innovator comes from a medium-
sized company which is delivering its innovation nation-wide, with the aim of
improving the industry’s safety record. While there are many rollover prevention
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systems available, the salient feature of this one is the lock out function which is
activated when the operator persists with moving the vehicle at an unsafe angle.
Figure 7.27 Rollover management system
Images ConPlant
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7.7.1 Slaughter’s taxonomy
This is a ‘Modular’ innovation under Slaughter’s taxonomy. It involves large changes
to the element concerned, but has little impact on the surrounding components other
than a reduction in time loss due to accidents. The innovation amounts a simple
substitute for similar plant and equipment, but the propensity for rollover is greatly
reduced.
7.7.2 Strategies that support successful innovation delivery
The equipment has been demonstrated at trade shows and is also promoted via means
of a plant hire system where contractors try out potentially useful machinery without
the expense of outright purchase. For equipment items with high capital cost, this is
an important way of acquiring market share.
7.7.3 Innovator comments
The innovator commented that his firm liked to have control of operator training in
order to be confident that correct procedures were carried out. They did not feel
entirely confident about relying on third party certification of machinery operation
skills. The system was motivated by the need to design out operator error and
intransigence. This was primarily a risk management strategy resulting from potential
liability due to OH&S laws. Removing the opportunity for potentially dangerous
operator decisions addresses a major risk on construction sites during the hazardous
excavation and site-forming phases of a building project.
7.7.4 Lessons from this experience
A technical innovation often needs to be supported by marketing and management
strategies that make the benefits of the innovation known. OH&S can be a driving
force behind inventive solutions to common construction problems. The evidence
from this case study is that safety is a primary concern for those construction SMEs
who use large plant and machinery, as well as a frequently changing workforce of
semi-casual employees. The emphasis is placed on reducing or removing the
potential hazard rather than on relying on the judgement of individual workers.
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7.8 Case Study 7: Dry wall noise barrier
QuietWave® is a high performance, dry wall noise barrier which is able to deliver
excellent sound attenuation due to its patented constrained layer membrane system.
The 1.2mm thick visco-elastic membrane is lightweight and can be readily installed
by one person. When combined with vibration damping, it easily exceeds Building
Code of Australia (BCA) noise reduction requirements for separating walls between
apartments, townhouses and other attached dwellings. It is also suitable when a high-
level of acoustic privacy is required, such as between offices, teaching spaces or other
institutional buildings. It is particularly successful at attenuating noise from
electronic entertainment sources for adjacent occupancies. The membrane has self
healing properties and can be penetrated without significant degradation in
performance. The finished wall system has a solid feel and when impacted upon,
sound resonates in a similar manner to that of a masonry wall. The system is space
saving, as it produces a 50% reduction in the width of the wall against other
comparable 6 star rated acoustic wall systems. This equates to a gain of 1m² of floor-
space for every 6.6m length of wall (Acoustica 2010).
The wall system comprises:
• One 13mm thick plasterboard sheet
• One 1.2mm thick visco-elastic membrane
• One 13mm thick plasterboard sheet
• 64mm staggered studs in a 92mm track
• 50mm thick insulation batt
• One 13mm thick plasterboard sheet
• One 1.2mm thick visco-elastic membrane
• One 13mm thick plasterboard sheet
This is illustrated in Figure 7.28 overleaf.
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Figure 7.28 Cut away model of QuietWave® wall
Image QuietWave®
Figure 7.29 QuietWave® compared to other sound reducing walls in current use
Image Spec Net
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The system provides what is currently regarded as the highest possible acoustic
performance for the thinnest available wall section. In addition, the membrane has
environmental benefits due to the fact that it is produced from organic waste products
including gelatine, glycerine and a filler material (Doneux and Takacs 2005a, 2005b,
2006).
7.8.1 Slaughter’s taxonomy
Under Slaughter’s five heading taxonomy of building innovations, QuietWave®
would best fit the category of ‘Modular’ innovation. It involves a large change to the
separating wall itself, but has little impact on other building components around the
wall. It is a closely bounded innovation in Harty’s terms (Harty 2008). The only
impact is that of space saving due to the comparatively narrow width of the wall.
This may result in more planning flexibility in some circumstances, such as in retrofit
projects.
7.8.2 Strategies that support successful innovation delivery
In the case of an innovative product which has no closely comparable competitors in
performance, it is necessary that a great deal of effort is put into making designers,
builders and clients aware of the product’s potential. Due to the highly original nature
of the innovation involved in the design of this wall system, marketing strategies have
played an important part in the successful delivery of the product.
Demonstrations of the effectiveness of the wall system on television programs such as
The New Inventors and Better Homes and Gardens were used to create public interest
and awareness. Endorsement on public websites such as the SMART 100 Index and
Australian Technology Showcase has further lifted the public profile of the product.
Recognition through awards such as the Small Business Ventures Excellence Awards
has also been pursued to increase market awareness of the quality of the product.
7.8.3 Innovator comments
This innovation was inspired by a need to improve the acoustic performance of noise
barriers in residential and commercial construction. This is an ongoing problem
which creates many acrimonious disputes between neighbours and some considerable
social disruption between people of different lifestyle habits and age group usage
patterns. There are other ways of reducing noise transmission between adjacent
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building areas, but this system was driven by the need to demonstrate the superior
performance that could be achieved using a product made from an environmentally
sustainable organic based product. It is likely that ongoing interest in green building
strategies will assist the growing market acceptance for this product. The innovator
sees this trend as the real potential for his innovation, because it is produced from
sustainable organic by-products which would otherwise be wasted.
7.8.4 Lessons from this experience
The technical superiority of an innovative product is not of itself sufficient to ensure
the rapid uptake of a product by the construction industry. Builders and designers
may prefer to stick with products that they are familiar with rather than risk change.
In order to overcome this, the innovator in this case targets market leaders in their
fields and specifically stresses originality and environmental benefits in the
information that the company disperses to architects and major property companies.
The more original the technical innovation, the more likely it is that an active
marketing campaign will be needed to persuade industry and end-users of the benefits
of change.
7.9 Case study innovation results and implications
All the case studies were of technical innovations of high-levels of originality, as
defined in the OEDC’s Oslo Manual, either new to the country or new to the world
(OEDC 2005). This does not mean that the products or processes have no
competitors or no available alternative solutions. Rather, it means that the products or
processes are significantly different in technical detail from the currently available
alternative options. The case studies highlighted the positive side of SME innovation.
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Table 7.2 Case study company characteristics
Innovation Small or
medium-sized
company
Product or
process
Patent holder
1 Rapid-setting volumetric
concrete
Medium Process No
2 Lightweight impervious
concrete blocks
Medium Product Yes
3 Under floor water storage
bladders
Small Product Yes
4 Cylindrical concrete
formwork tube
Small Product Yes
5 Salt removing sacrificial
render
Small Process Yes
6 Rollover warning system
for articulated
construction plant
Medium Product Yes
7 Dry wall noise barrier Small Product Yes
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Table 7.3 Case study innovation characteristics
Innovation Novelty level
(OECD Oslo Manual
definition)
Slaughter’s
taxonomy
1 Rapid-setting volumetric
concrete
To the country Radical
2 Lightweight impervious
concrete blocks
To the world Systems
3 Under floor water storage
bladders
To the world Systems
4 Cylindrical concrete
formwork tube
To the country Architectural
5 Salt removing sacrificial
render
To the world Modular
6 Rollover warning system
for articulated construction
plant
To the country Modular
7 Dry wall noise barrier To the world Modular
Many SMEs are headed by very able individuals who have chosen to avoid working
in large businesses, because of the restrictions that a large bureaucratic organisation
can place on individual creativity. Such individuals have the potential to be leaders of
industry change and generators of new systems and products. Nam and Tatum (1997)
refer to them as ‘champions’ of innovation. The fact that the construction industry is
characterised by many small businesses has both positive and negative aspects. It
does lead to restrictions on capacity and resources, but it also enables creative
individuals to move quickly in new directions and develop new solutions to industry
problems. It is this potential that justifies this research into factors that affect
technical innovation for non-micro SME construction companies.
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The breakdown of the characteristics of the case study innovations is shown in Table
7.2 and 7.3 on previous pages. As with the AHP study, innovations are regarded as
either product or process-based innovations, depending on whether or not they
primarily involve a physical object (product) or a method of work delivery (process).
The novelty level is either ‘new to the country’ or ‘new to the world’ as defined by
Manley in the BRITE Report 2005. Finally, Slaughter’s taxonomy of technical
innovation in construction, as described in Figure 2.5 (p.44) of this thesis, is used to
classify each innovation according to its degree of internal change, along with
changes involved in connecting construction products or processes.
As a further level of analysis, the innovations were classified according to three sets
of alternative characteristics described in the literature: These are ‘Project-based/
Reactive/Bottom-up’ compared with ‘Strategic/ Proactive/ Top-down’ as described by
Winch (1999); ‘Unbounded/ Systemic’ compared with ‘Bounded/ Autonomous’ as
defined by Harty (2005); and according to the decision making practices as described
by Mitropoulos and Tatum (1999) as Intuitive/ Behavioural as opposed to Analytical/
Rational. Although there was some cross over between the alternatives, most of the
innovations appeared to fall significantly, if not entirely, into one or other category.
The results of this analysis are shown in Table 7.4 overleaf.
The choice between strategic or proactive innovation types is largely revealed by the
history of the innovation generation. If the innovation resulted directly from a
perceived problem, it was regarded as reactive, but if it was more speculative in the
sense of looking for greater efficiencies in general delivery of a project, it was
regarded as proactive. Unbounded innovations affect the systems around them
significantly, whereas bounded innovations largely affect only themselves. The
choice between intuitive or analytical innovations mainly relates to the amount of
systematic testing that took place during the innovation generation. The analytical
approach starts with no particular solution in mind and scientifically eliminates
alternatives. The intuitive approach starts with a specific idea that is then tested for
its suitability and performance. Successful technical innovations have been recorded
as deriving from either process.
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Table 7.4 Descriptive innovation categories
Innovation Strategic/
Proactive/T
op-down
Project-based/
Reactive/ B
ottom-up
Bounded/
Autonom
ous
Unbounded/
System
ic
Analytical /R
ational
Intuitive/ B
ehavioural
Rapid setting volumetric
concrete
Lightweight impervious
concrete blocks
Under floor water storage
bladders
Cylindrical concrete formwork
tube
Salt removing sacrificial render
Roll over warning system for
articulated construction plant
Dry wall noise barrier
Table 7.5 (overleaf) shows how the innovations rate under Lim and Ofori’s three way
classification relating to the reason for the innovation’s successful adoption (Lim and
Ofori 2007). Although the innovations may be seen as fitting multiple categories,
only the primary, or driving one, is selected here. The case studies are evenly spread
between the three prime driving factors. This variety in driving factors supports the
contention that the case studies represent a sample of the diversity exhibited by high-
level technical innovations in construction.
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Table 7.5 Prime reason for successful innovation delivery
Innovation
Innovations the
market is w
illing to
pay for
Innovations that
reduce builders’ costs
Innovations with
intangible benefits
producing competitive
advantage
Rapid setting
volumetric concrete
Lightweight
impervious concrete
blocks
Under floor water
storage bladders
Cylindrical concrete
formwork tube
Salt removing
sacrificial render
Roll over warning
system for articulated
construction plant
Dry wall noise
barrier
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Table 7.6 Case study descriptions
Technical innovation case study
description
Com
pany holds patents on the invention
Involves trademark protected
intellectual property
Degree of novelty (O
EC
D O
slo M
anual)
Com
pany size by direct em
ployment (A
BS
)
On demand concrete mixing system that
reduces waste and can be used for rapid
setting concrete
* High Medium
Lightweight interlocking concrete block,
impervious to water that does not require
tanking in retaining wall situations
High Medium
Under floor rainwater storage bladders
connected to outlets within the building to
replace a percentage of mains water usage
High Small
Temporary formwork for round columns
with quality finish and easy removal Medium Small
Salt removing poultice to restore
appearance and strength to masonry
building components deteriorating due to
salt deposits resulting from rising damp
High Small
Early warning and function management
system designed to reduce the risk of
mobile plant roll over
Medium Medium
Lightweight, high performance dry wall
noise barrier that is easily installed and
takes up minimal floor space
High Small
*Company holds southern hemisphere licenses for the patented invention
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In Table 7.6 (on previous page), the originality of the case study innovations is
confirmed by checking on which innovating companies hold patents for the product
or process described. Six of seven do so and the remaining company holds licenses
for the patented process for the southern hemisphere. All seven innovations involve
trademarked intellectual property. The innovations are classified as high or medium
level innovations, according to the definitions set up in the OECD’s Oslo Manual
(OEDC 2005). No low-level innovations were included, because the selection criteria
for the case studies involved peer recognition for having delivered a ‘significant’
innovation’. Company sizes are based on the ABS definitions of 5 to 19 employees
for a small company and 20 to 200 employees for a medium company.
7.10 Vectors affecting technical innovation
Deriving from the case study observations, a pattern can be observed in the factors
that affect technical innovation delivery by construction SMEs. This is different in
detail from the factors initially identified from the literature review and tested via the
AHP survey. A set of seven vectors affecting technical innovation has been
identified. The seven vectors are illustrated in Figure 8.30 overleaf. The items are
properly described as vectors because they have both magnitude and direction. In
individual cases they may operate in either a push or a pull mode. In other words, the
direction of the affect may be either way. None of the innovators studied, operated
entirely in the ‘Open innovation’ mode as described by Chesborough (2003 and
2006). All exhibited concern about protecting their intellectual property and
commercial viability. From the findings of this study, however, technical innovation
in construction does not appear to be entirely focussed on economic motives.
Innovation may have primarily environmental (Bossink 2007) or social foci
(Loosemore and Phua 2010). Several other factors as described in Figure 7.30
(overleaf) can at times be the driving impulse for new building products and processes
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Figure 7.30 Vectors of SME technical innovation
The vectors are: contractor creativity; economic efficiency; solving problems on site;
OH&S benefits; end-user or social focus; environmental performance and client
demands. None of the case studies demonstrated being affected by all the listed
vectors; however, there was evidence for each vector from multiple case studies. This
is illustrated in Table 7.7 overleaf.
The company’s publically available information about their innovation, as well as
reviews and comments by the innovator and other industry authorities, have been
taken into account in determining the significance of each vector to the delivery of the
individual technical innovation.
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Table 7.7 Drivers of SME technical innovation development
Contractor creativity was a factor in all cases, unsurprisingly, as this is partly the
reason for the case study selection in the first place. Of the other factors, the
overcoming of site/project-based problem was a factor for six of the seven case
studies. This result accords with the findings of Mitropoulos and Tatum (2000) who
found ‘process problems’ as one of the four forces which drive construction
innovation. An economic focus and an OH&S focus were each noted for five of the
seven case studies. The construction industry is inherently practical and delivery
focused. Economic benefits are the most powerful driver of change diffusion
Innovation
Innovation generated by contractor creativity
Client dem
and driven
Driven by overcom
ing site/project based problem
s
Environm
ent focus
Econom
ic focus
OH
&S
focus
End-user/social focus
Rapid setting volumetric concrete
Lightweight impervious concrete blocks
Under floor water storage bladders
Cylindrical concrete formwork tube
Salt removing sacrificial render
Roll over warning system for articulated construction plant
Dry wall noise barrier
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throughout the industry, but they are not always the primary motivation for those who
generate that change, even though economic factors can never be ignored in an
applied industry like construction. Environmental and social focuses were noted for
three of the case studies each. These areas may become greater push factors as public
awareness and government regulation increase. Client demand was identified as
important in two of the case studies. This is perhaps lower than would be expected,
but may be due to the level of originality of the innovations studied. These tend to be
driven by the internal insights of the innovator rather than market demand.
Chapter 8 of this thesis will discuss and attempt to find convergence in the findings
from the literature review, the AHP study and the case studies. Diverse factors have
been identified via these three methods and differing weightings have been noted as
resulting from the three methodologies used in this research. Some differences are
generated due to the anonymity of the AHP survey compared with the public nature
of the case studies. Nevertheless, significant agreement has been noted and some
speculative theory has been generated.
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CHAPTER 8 A MODEL OF SME TECHNICAL INNOVATION DELIVERY
Chapter 8 analyses the convergences and contradictions between the three mixed
method strands of inquiry into technical innovation by small and medium construction
enterprises. A diagrammatic model of successful technical innovation delivery is
presented.
8.1 Convergence of methodologies at factor level
The AHP study rated the five factors in the Value Tree in order of priority as:
1. Regulatory climate
2. Client and end-user influences
3. Industry networks
4. Project-based conditions
5. Company resources.
The factor priorities expressed in the AHP survey proved to be quite robust, even
allowing for a level of inconsistency in the survey answers. The anonymity of the
AHP survey meant that respondents were able to disregard any potential public
relations consequences if, for example, clients or public bodies were the object of
implied criticism. Many of the Value Tree factors were also raised in the case study
data, but the level of emphasis was different. In the case study interviews, the
successful innovators, knowing that what they said would be published, were careful
to present only positive accounts of their relationships with clients and funding
bodies.
8.1.1 Regulatory climate
Regulations were rarely mentioned specifically by the case study innovators, except
when they were speaking of past problems which they had overcome. The expense of
providing independent tests as verification of the performance of the innovation with
respect to the Building Code of Australia (BCA) and Australian Standards was
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mentioned (three case studies). This was particularly important when an innovative
product or process was competing with a recognised prescriptive or ‘Deemed to
satisfy’ solution in the BCA. Sufficient capital to back the innovation through this
phase was, therefore, deemed to be an essential prerequisite for innovation delivery.
8.1.2 Client and end-user influences
The role of clients and end-users varied a great deal depending on the specific nature
of the case study innovation. In some cases, marketing techniques to raise consumer
awareness were critical. The use of internet websites to make the unique features of
an innovation known to the general public was practiced by all the case study
companies. In most cases, significant investment had been made in this area. Other
media such as television and radio were also used by the innovators to incite public
interest (five of seven case studies). Supportive clients were mentioned as important
in the early stages of innovation delivery by some case study innovators, particularly
those from small businesses (three of seven case studies). The use of open days to
demonstrate the innovation to industry decision makers was found to be a very
effective technique (single case study).
8.1.3 Industry networks
‘Industry networks’ were very important to some innovators, although this was not
universally so. Many innovators were heavily involved in a relevant professional
organisation or industry group (five of seven case studies). The value of industry
awards as a promotional tool was recognised by several case study innovators (five of
seven case studies). Some innovators had encountered difficulties with their
associations based on conservative attitudes to technical changes to established
practice. Malerba and Vonortas (2009) stress the importance of industry or sectoral
networks as part of the general strategy of a firm looking towards technological
advancement, increased market share and general competitiveness. Cohen and Prusak
(2001) describe how important networking is to the concept of social capital.
Progressive companies value knowledge exchange, collaboration and the reward of
being appreciated by those who understand their achievements. In general, industry
networks may have contradictory effects on innovation development and diffusion.
They can speed up the innovation delivery process for those inside the network, but
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they can also have the effect of excluding those outside it (Malerba and Vonortas
2009).
8.1.4 Project-based conditions
Six of the seven case study innovations were driven by the need to deal with ‘project-
based conditions’ or difficulties. These ranged from lowering the likelihood of
accident and injury on site (four case studies) to introducing entirely new alternative
solutions to common construction operations (five case studies). All the case studies
were practical solutions to problems in construction management or to problems in
the wider environment.
8.1.5 Company resources
The lowest ranked factor in the AHP study was that of ‘company resources’ and the
case studies tended to confirm this rating. It may be that a prerequisite for successful
technical innovation, as described in the case studies, is the ability to draw together
sufficient economic and other resources to ensure that the business is not operating at
the edge of survival. It may also be that internal motivational factors are less
important than other innovation elements as found by Szulanski (1996). Many small
construction companies do operate under constant threat of bankruptcy, as evidenced
by business failure rates. Significant innovations do not, however, appear to be
delivered by such companies. The evidence from this study is that problems of
managing cash flow and maintaining liquidity need to be solved before an SME is
able to take on the task of developing a technically innovative product or process.
8.2 Convergence of methodologies at sub-factor level
The AHP study prioritised the fifteen sub-factors in the following order:
1. Client characteristics
2. Improving OH&S
3. Performance-based standards
4. Professional and industry associations
5. Research organisations and universities
6. Supply chain relationships
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7. Personal motivation
8. Procurement systems
9. Solving problems that occur on site
10. Available skill levels
11. Local government regulations
12. Industry standards
13. Available finance
14. Available time
15. Insurance and risk.
8.2.1 Client characteristics
The case study innovators did not mention ‘client characteristics’ as being of primary
importance in the way that the AHP study prioritised them. A possible explanation of
this may be that in the anonymous survey, it is possible to acknowledge the critical
nature of a client’s relative openness to new ideas, but in the case studies where the
innovators knew that their comments might be published, they preferred not to reflect
adversely in any way on the nature of their clients. It could also be that some of the
seven case studies represent a kind of elite among innovators and are no longer
dependent on patronage from foresighted clients. Some may have reached the state of
maturity in their innovation processes where specific patronage is no longer required.
Either way, the case study evidence is insufficient to lead the critical observer to
ignore the high rating for this factor in the survey.
8.2.2 Improving Occupational Health and Safety
‘Improving OH&S’ was given high importance in the case studies, as well as in the
AHP study. Five of the seven case studies involved a distinct focus on improving
health and safety on construction sites. Safety is likely to be a high priority for any
technical innovator as any serious safety incidents would set the process of innovation
delivery back by a large amount. In addition, the human costs of workplace industry
accidents have been widely canvassed in the construction industry in recent years
(Loosemore and Andonakis 2007). With a significant technical innovation, there is
no track record of safe practices to indicate how best to manage safety issues. As
Weick (2001 p.330) explains, accidents occur because the people who operate
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complex systems may not be able to anticipate all the potential problems that can be
generated by those systems. Consequently, this issue must be thoroughly examined
and options tested before the new product or process is offered on the market. Even
so, safety can never be entirely assured; however the probability of misadventure may
be reduced to a level considered acceptable.
8.2.3 Performance-based standards
The third most important sub-factor ‘Performance-based standards’ was also not
mentioned directly in information collected about the case study innovations. Only
two of the seven case studies involved an innovation that competed directly with a
prescriptive or ‘deemed to satisfy’ solution in the BCA. It may be that this is another
item that is important in the establishment phase of a technical innovation, but
becomes less so over time if compliance has been well managed in the early stages.
The need for approval authorities to be up-to-date with technology development was
mentioned as an aside by two innovators. This is the issue that is specifically
addressed when new products or processes are presented via performance-based
solutions for particular projects.
8.2.4 Professional and industry associations
‘Professional and industry organisations’ were given a high priority in the AHP study
(ranked 4th). Six of seven case study businesses had significant involvement in a
relevant organisation. These included the Australian Institute of Building (AIB), the
Civil Contractors Federation (CCF), Housing Industry Association (HIA) and
Engineers Australia (EA). The innovators relied on contacts through their
membership of these organisations in order to raise awareness about their product or
process. They also relied on the kudos of industry awards distributed by these
organisations for general credibility as a successful contractor. The role of broader
industry organisations in lobbying governments was also recognised. In addition, the
innovators monitored their competition by means of contact through their professional
organisation.
8.2.5 Research organisations and universities
Four of the seven case studies had close associations with universities or other
research organisations. In some cases, this was mostly about independent testing and
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verification, but in other cases there was ongoing collaboration with academic
researchers during the development and delivery process for the technical innovation.
Some innovators also perceived universities as possible sources of new ideas and
potential developments in their fields. There was, however, also some wariness about
the loss of confidentiality and ownership of intellectual property when external
research bodies became involved in SME product development.
8.2.6 Supply chain relationships
Case study innovators did not reveal a great deal about their ‘Supply chain
relationships’ (ranked 6th in importance by the AHP study). Like the previous
comment on ‘Client characteristics’, this may simply represent a reluctance to be open
about commercially sensitive relationships. Managing the supply chain for a
construction business involves balancing a large number of variables. Much of the
necessary information is regarded as commercially in confidence. In the anonymous
AHP survey, however, this was rated as a moderately important factor for technical
innovation delivery. It is also likely that supply chains are critical during the
establishment phase of an innovation, but become less so when things are progressing
well. Economic downturns and materials shortages may also have great impact in this
area, independent of the innovation cycle.
8.2.7 Personal motivation
‘Personal motivation’ was ranked 7th in the AHP study, although few of the case
study innovators sought to put themselves forward as the primary driver of their
innovation. Mostly they wanted to emphasise the performance of their product or
process, rather than their personal input as an innovator. None of the case study web
sites make a feature of the individual or individuals who developed the innovation to
any great extent. They emphasise the range and the advantages of the product or
process, not the person or the team. None presented themselves using words like
‘inventor’ or ‘originator’. Nor did they characterise their products as ‘revolutionary’,
although several did declare their products to be ‘ground-breaking’. Nevertheless,
some of the individual innovators did speak privately of financial security,
sustainability and social benefits as being matters which motivate their work and their
lives in general.
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8.2.8 Procurement systems and solving problems on site
‘Procurement systems’ and ‘Solving problems that occur on site’ were ranked 8th and
9th in the AHP study. Both these factors relate to the applied nature of construction
and the importance of management skills in quality project delivery. The case study
companies all present themselves in their publically available information as flexible,
responsive and reliable. Some particularly stress their abilities as problem solvers and
claim that they prefer the difficult projects, as these give them the opportunity to excel
and to surpass expectations. The detail of preferred procurement routes was not
discussed by the case study innovators. Once again, this probably relates to issues of
commercial sensitivity.
8.2.9 Available skill levels
To round out the top ten in the sub-factor rankings, ‘Available skill levels’ was a
factor for some of the case studies as well as for the survey respondents. In particular,
two of the case study businesses had programs in place to train workers in the specific
tasks involved in their technical innovation. In both these cases, the innovator
expressed the opinion that existing trade training courses through TAFE colleges, did
not produce workers with sufficient skills to deal with new products or processes, so
the innovators had chosen to deliver the training through their own business.
8.2.10 Remaining sub-factors
The remaining five sub-factors were given relatively low importance by the AHP
survey and this was largely confirmed by the case studies. ‘Industry standards’ and
‘Local government regulations’ were not mentioned in the case study information.
Local government matters are mainly of concern to those innovators dealing with
housing stock. Only one of the case studies dealt primarily in this area and that
business had very good local community involvement and therefore, good
relationships with the local Council and its building inspectors. Several of the
innovators indicated that they were the ones who set the industry standards for
performance, rather than being followers of those standards. They regarded
themselves as ‘trend-setters’. ‘Available finance’, ‘Available time’ and ‘Insurance
and risk’ all scored low ratings on the AHP survey and were not mentioned in the
case study information. Although SMEs and small businesses, in particular, are often
said to suffer badly from these constraints, the case study businesses did not exhibit
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any such distress. As previously mentioned, this is probably due to their being elite
innovators, who have successfully managed these contingencies in order to set the
preconditions for their innovation delivery. As Drucker (2007 p.127) has pointed out,
successful innovators are not ‘risk-focused’; they are ‘opportunity-focused.’ This
may account for the successful innovators in the survey giving ‘Insurance and risk’
their lowest priority rating of any of the fifteen sub-factors.
8.3 Innovation delivery model
This research demonstrates that it is a suite of factors that enable a technical innovator
to deliver a new product or process. A new synthesis of factors can be derived from
the results of the mixed methods studies. Technical skill and a good idea do not
represent a sufficient precondition for successful innovation delivery. There must
first be a spark of a creative idea which may have any of several motives including
economic, environmental or social factors. That creative idea needs to be supported
by other skills in the areas of networking and business proficiency. This dependency
can be expressed graphically in the triangle of innovation delivery. In Figure 8.1, this
model is presented. The spark of contractor creativity is at the head of the triangle.
Stability is achieved if the creative idea is supported on a solid base of two
complementary skills. These are ‘Social networking’ and ‘Business competence’. In
the absence of either factor, or if one factor is weak, the triangle collapses. The
innovation effectively ‘goes nowhere’ and potential gains are not made. Drucker has
stressed that “Successful innovators use both the right and the left sides of their
brains” (Drucker 2007 p.123). It is contended that cases of successful innovation are
likely to fit this stable triangle format. Particularly for SMEs, the support factors of
social networks and business skills must be in place, as SMEs are unlikely to have the
resources to deliver significant innovations entirely ‘in-house’ and unaided. As
Bessant and Venables (2008) state “innovation is a process – an extended set of
activities that translate new knowledge into something of value” (Bessant and
Venables 2008 p.3). They go on to state that innovation involves the weaving
together of two different strands: the supply strand of knowledge about possible
means; and the demand strand of knowledge about needs. Successful innovators
know this and they avoid relying on narrow perceptions of acceptable practice, when
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alternatives are available for those who want to take advantage of all available
opportunities. Successful innovators recognise the complexity of the change process.
A successful innovation, however, also needs to be simple and focussed. It should
produce a specific end-result. Drucker says that the best praise an innovation can
receive is the response of “Why didn’t I think of that?” (Drucker 2007 p.123).
Without this acknowledgement from both competitors and customers, a good idea is
likely to remain unrealised. For this reason, all the successful innovators in this study
actively courted wider industry recognition and acceptance of their products and
processes. They had to balance the need for product awareness with the imperative of
protecting their intellectual property. Innovations usually start out as relatively small
investments in changes to existing practice. This allows the time for adjustments and
reassessments to be made before large scale and radical innovation is attempted.
Finally, all the innovations studied for this thesis aimed at achieving a position of
leadership in their particular field. Whether this leadership aspiration extended to
achieving market domination, or simply to successfully occupying a particular niche
in the market, depended on the nature of the innovation. All the innovators studied
wanted to achieve successful innovation delivery themselves, rather than altruistically
creating opportunities for others to exploit. This was true of innovations that were
motivated by environmental and social issues, as well as those with a primary
economic focus.
As Rogers (2003) noted, getting a new idea adopted is difficult even when it has
obvious advantages. The time frame may be long and there may a need for multiple
re-innovations to adapt to changing demands.
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Figure 8.1 A model of technical innovation by construction SMEs
The particular virtue of SMEs is flexibility, due to their reliance on the leadership of
‘hands on’ individual enthusiasts rather than on the collective choices of Boards of
Directors and other corporate structures, which may be at some distance from the
company’s core business. In the wider international economy, it is reported that many
of the most successful businesses of today were created by individuals, who
tenaciously pursued ideas that had been rejected by the decision making bureaucracies
in large organisations (Acs et al. 2009). Examples cited include Apple Computer,
Xerox, Microsoft, Google and Genetech (Acs et al, 2009 p.8). The power to have a
real influence on the direction that a business takes is one of the factors that attract
creative individuals to the running of small and medium-sized businesses. They are
less likely to be restricted by the conservative attitudes of over-cautious and multi-
layered management systems which sometimes characterise large firms. Indeed,
noted innovation theorist Baumol (2004) found revolutionary technical breakthroughs
to be the specific province of small firms, while large firms specialise in systematic
and incremental innovation.
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The downside of this picture is that SME business owners may have trouble attracting
the investment and the skill base necessary to deliver their innovative ideas. If the
creative individual is not also an entrepreneur and an adept business manager, then it
is necessary acquire these skills, or to form alliances with individuals who already
have them. This may happen by self-education, or from the formation of strategic
alliances with people or organisations that possess the necessary expertise. This is the
core idea behind the model presented in Figure 8.1. The creative contractor must
acquire by one means or another, the necessary skills and supports at the base of the
triangle if any creative technical ideas are to be translated into successful marketplace
innovations.
This gives context to the model presented in Figure 8.1, which is based on the
Schumpeterian perspective of entrepreneurial leadership, albeit by small and medium,
as well as by large businesses (Schumpeter 1942). However, the model also
acknowledges the significance of problem solving pull factors, as well as the social
environment via networking. It is not possible from the study carried out for this
thesis to determine the relative impacts of the individual compared with the
supporting environment. It is possible, however, to say that there is some congruency
between the factors found to be significant and the larger economic theory about the
generation of technological change at the level of the individual enterprise.
It is for this reason that the proposed model of technical innovation (Figure 8.1)
acknowledges the importance of the individual, but also maintains the importance of
networks with other individuals to support creative problem solving. In seeking to
understand how organisations can be effective generators of ideas, Weick (2001)
stresses the need for an appreciation of “the social, interpersonal, multiple actor
quality of coordinated activity that characterises most task performance” (Weick 2001
p.x). This is certainly the case in the construction industry. Almost all construction
endeavours involve multiple actors. One person alone may be able to build a log
cabin, but almost anything larger than that requires several pairs of hands for a
successful outcome. In other words, while individuals can have enormous impact,
they mostly cannot do so unassisted. Consequently, the model of technical innovation
presented here incorporates the importance of social networks at a level equal to that
of economic and resource factors. Similarly, almost all construction endeavours
involve profit as a motivating factor and innovation is a well recognised source of
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competitive advantage in a market economy (Keen 1997). Consequently, the business
competency leg of the triangle also cannot be neglected.
It must be noted that the quantitative study for this thesis found relatively few
statistically significant differences among the identified high-level technical
innovators. Factors such as company size, innovation type and whether or not the
innovation was patented had less impact on the innovation delivery process than was
anticipated. Consequently, the process of successful delivery of a technical
innovation can be seen to have outweighed the individual characteristics of the SME
innovators, at least to some extent. The innovators studied had managed to balance
the three legs of the innovation triangle presented in Figure 8.1 and this, in itself,
makes their experience unusual for a construction SME where business failure is
commonplace. Nevertheless, the high-level innovator’s experience has potential
lessons for others in the industry who seek to improve innovation performance on
several levels.
Extrapolating from the model presented as well as the outcomes of the quantitative
and qualitative studies, the final chapter of this thesis will attempt to draw out the
research outcomes in terms of recommendations for the various interest groups
involved in the construction industry which have an interest in lifting the rate of
technical innovation.
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CHAPTER 9 CONCLUSIONS AND
RECOMMENDATIONS
Chapter 9 identifies the major outcomes of this research in terms of advice for
aspiring innovators, industry umbrella bodies, professional organisations, research
institutions and government regulators. Possible areas of future research in this field
are also identified.
9.1 A matter of pre-existing resources?
While the detailed storyline of the delivery of each successful innovation is likely to
be unique, nevertheless, the distilled collective experience of SME technical
innovators in the construction industry has many potential lessons for the industry as a
whole, as well as for companies specifically looking to improve their own innovation
performance. Large businesses may have a level of slack resources which they can
choose to deploy towards finding solutions for technical problems. Indeed, this is the
traditional economic theory view of the generation of invention and innovation, where
it is largely considered to be impractical for small businesses to generate innovations
of significant originality (Schumpeter 1942). It is true that SMEs are rarely in the
happy situation of having a pool of unused resources which may be allocated towards
innovation. Nevertheless, some SMEs do manage to go against the general trend and
are able to generate, develop and deliver significant technical innovations. Often,
they are able to do this because of the level of control that the chief decision maker
may have in such businesses. Unlike the practice in many large companies, it is
probably not necessary for the business owner or manager to seek several levels of
approval from within the organisation. The SME individual therefore, has greater
power to follow his or her own insights and set his or her own goals. Many of the
survey respondents commented that they value this sense of autonomy and feel that it
enables them to make significant changes to standard practice. Speaking of the wider
economy rather than specific industries, Acs and Audretsch (1990) demonstrated that
small firms were featuring more prominently in the delivery of technological change
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at the end of the twentieth century, although this was against the ‘common wisdom’
of prevailing economic theory. More recently, Dodgson et al. (2008) has reported
that SMEs often have an ‘external orientation’ that enables them to be receptive to
working with other firms, research organisations and universities. Flexibility and
adaptability can, in part, make up for a lack of initial resources. Connections with
external bodies can assist the SME through the difficult start-up phase of technical
innovation delivery. The focus needs to be on delivering value and building
competitive advantage. Under these circumstances, SMEs are fully capable of
generating and delivering significant technical innovations (Dodgson et al. 2008,
p.131).
Although improving the rate at which construction companies develop new solutions
is a useful industry goal, the diversity of the industry probably limits the effectiveness
of simple ‘one size fits all’ programs on construction innovation. An open-ended
structure in the regulation and approval system appears to be needed as a prerequisite
for successful innovation. Flexibility in procurement systems and discretionary
encouragement by repeat clients with their own innovative practices are likely to
prove useful aids to innovation performance. Industry networks have a clear role to
play in supporting the efforts of innovators. Real and effective change is, however,
largely driven by the enthusiasm of talented individuals, who simply refuse to accept
that there is only one solution to a given problem. These ‘out of the box’ thinkers
combine technical know-how with an understanding of what the market wants and
how best to deliver it. An industry climate that provides scope and opportunity for
such people to develop and prosper is the primary prerequisite for improved technical
innovation rates.
In spite of perceptions that the construction industry can be slow to innovate, this does
not alter the fact of the accelerating rate of technological change in our wider society.
While encouraging the embracing of new technology, Keen (1991, p.211) stresses
that this is not a matter for ‘change management’, because change cannot be managed
when, because of the accelerating rate of change, there is no longer a status quo. In
any case, such change management strategies are necessarily reactive rather than
proactive. The preferable situation is that managers should seek to align their
business strategies with the process of change occurring in the wider society. This
desired alignment is the basis of the advice to stakeholders given below.
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In keeping with the research intent outlined in Section 1.10 of this thesis, ‘to perform
a systematic study of successful construction SME innovations and the strategies
adopted for their delivery, with the intention of yielding useful lessons for other
businesses wishing to improve their own innovation performance’ (p.32) the
following sections will outline the thesis findings for such businesses, as well as, for
other interested parties.
9.2 Findings for aspiring innovators in SMEs
Technical innovation is not limited to radical, paradigm-altering inventions. It may
include small changes and modifications to existing practice which have the effect of
improving the efficiency of project delivery. Furthermore, technical innovation may
be driven by several different motives. These include economic prosperity,
environmental performance or social improvements, such as safety-driven
technologies. Developing a ‘Technology strategy’, as advised by Shane (2009), is
important for any business, as it is the major source of value creation, as well as a way
of satisfying needs not previously met, and thereby generating competitive advantage
(Shane 2009 p.7).
The evidence from this study is that aspiring innovators who are decision makers in
construction industry SMEs should be aware of the importance of the two supporting
factors at the base of the technical innovation delivery model in Figure 8.1; namely
social networks and business competency. Such managers should seek to establish
good, cooperative relationships with repeat clients, investors, end-user representatives
and supply chain associates. They should join and become active members of
appropriate industry or professional organisations. This serves multiple purposes. It
provides a possible sounding board for innovative ideas that are not fully developed.
It enables the publicising of technical innovations among those most likely to be
interested in adopting them. It also enables an SME to have contact with its
competitors. This is not about industrial espionage, but rather about the reflective
monitoring of competitors’ activities in order to understand and constantly measure
the impact of different strategies on the success of innovation delivery. Additionally,
SME managers need to make contact with research and testing organisations, because
even when an innovation is entirely generated in house, it will almost inevitably
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require verification by independent authorities in order to convince a sceptical
marketplace of the utility and safety of the innovation concerned.
The company manager with a great idea for a potential technical innovation or one
with a problem that needs to be solved (either a push or a pull issue), should not
concentrate exclusively on the idea or problem itself. It is important that sufficient
attention is also given to establishing a business plan for the management of the
company during the development and delivery process of the innovative solution.
Lack of adequate capital and poor cash flow management can ensure that there is no
successful outcome for even the brightest of bright ideas. This area must be
addressed early in the process by developing the appropriate expertise or by acquiring
it from elsewhere; otherwise the likelihood of success is poor.
Potential innovators should scan available market options with an eye to potential
innovation opportunities. They should ‘cast their nets widely’ and not confine their
searches according to too many preconceptions. There are lessons to be learned from
other industries and other spheres of activity.
SME managers who wish to improve their firm’s innovation performance should be
heartened by the histories of the innovations described in this thesis. It is clear that
SMEs are capable of delivering significant technical innovations. They should not
leave the field of research and development to the large companies. The enthusiasm
and insight of those in SMEs who are ‘close to the action’ in the building process can
certainly deliver new solutions to the industry’s problems, both now and in the future.
9.3 Findings for industry bodies and professional organisations
Both the AHP study and the case studies undertaken for this thesis signalled that
networking by means of professional organisations and industry bodies is particularly
useful for SMEs. There was also some indication that this is especially so for small
businesses. SME managers certainly used their association memberships for business
and social contacts, but their importance was much broader than this basic
networking. Innovators specifically mentioned in their open-ended comments, the
value of professional bodies as lobbyists who could influence legislation and
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Australian Standards. This role is one that the organisations may be well advised to
stress in their recruitment drives among SMEs.
Keeping the wider industry up-to-date with innovative developments in their field was
clearly seen as an expected role for professional associations. Local and national
awards were valued by innovators for these purposes. Peer recognition was
specifically sought and valued by all the participants in this study. Furthermore, peer
recognition was seen as a significant marketing advantage for a new product or
process. There is also a potential role for industry bodies in providing
‘entrepreneurial apprenticeships’, or other structured guidance, to potential innovators
who have an abundance of good ideas, but lack the business skills to deliver them in
the marketplace. This has been demonstrated to have worked in other industries (Acs
1999).
The attitude of the innovators in this study was, however, not entirely positive
towards professional and industry groups. Some expressed the belief that these
bodies were sometimes captured by particular groupings, who operated for their own
benefit rather than that of the larger industry. It may be useful for the bodies
themselves to consider ways of countering both the perception and the actual
possibility of their being captured by special interest groups within the organisation.
9.4 Findings for researchers
Several innovators in this study described the importance of relationships they had
developed with universities or other research bodies. In a few cases, this amounted to
a genuine research partnership. This was particularly true for the more ‘cutting edge’
innovations. Others, however, saw traditional academic research as something that
had no relevance for their organisations. Their inventions or innovations were largely
generated and developed in-house. The role of independent testing for the finished
product was acknowledged, but there was little regard for research partnerships. The
problems expressed about university researchers included: a lack of concern for the
economic imperatives for businesses; the issue of confidentiality; and the different
time frames imposed by academic publication rules.
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If university researchers are to play a more active role in assisting innovation by
construction SMEs, it will be necessary for the different priorities of applied and
academic research to be carefully negotiated. University researchers need to be aware
of the scruples some SMEs have about the possible loss of control and confidentiality
of their innovation, once research bodies become involved. A more engaged and
cooperative approach is needed when dealing with industries like construction as
opposed to research in the traditional sciences. Something along the lines of the
Constructing Excellence Clubs in the UK may be a useful strategy (Constructing
Excellence UK 2010).
The possible role of universities as ‘innovation brokers’ and as centres for intra-
industry collaboration by SMEs is something that has not been much addressed in the
Australian context. These strategies have the potential to assist overall industry
performance and provide mutual benefits for the participants from industry and
academia alike. If, as has been suggested, inventive solutions and eventually market
delivered innovations can arise when different individuals with separate bodies of
knowledge are brought together to address a problem, closer relationships between
industry and academic research are a potential source of new ideas which may be of
mutual benefit.
9.5 Findings for governments and regulators
Governments and regulators should not fall into the trap of believing that innovation
is the exclusive province of large firms. While small and medium construction
businesses in the aggregate do not appear to be particularly research intensive or
innovative, many exceptions to this rule exist. There is considerable benefit to be
gained for the wider economy, from encouraging SME innovators. Indeed, some
researchers have found that small firms have the advantage in generating innovation
in industries that utilise a high component of skilled labour (Acs and Audretsch
1990).
A variety of attitudes to the role of governments and regulators were expressed by the
innovators studied for this thesis. Some innovators praised government institutions
such as the Australian Trade Commission (AUSTRADE) and the Australian
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Technology Showcase. These were perceived to be helpful in disseminating the
message about a technical innovation to a wider audience than the innovator could
reach unaided. Support was quite widespread for an ongoing government role in this
area. There was also some support for tax concessions for research, but much
opposition to the ‘red tape’ and bureaucracy that controls such concessions.
Governments may need to prioritise this issue, as there is a perception that innovators
are not able to access some of the available government support because of the time
pressures involved in running an SME.
The question of patents and patent administration is of critical importance to high end
SME innovators. The cost of taking out and defending patents can, at times, be
prohibitive for small firms. The growth of litigation over patents is a factor which, if
left unchecked, may become a significant brake on SME innovation of the more
radical kinds. Government authorities need to monitor this situation carefully, as it
has the potential to have great impact on industry development.
A difference of opinion was found with regard to the role of building regulations.
The findings from the AHP survey are equivocal when it comes to the importance of
performance-based standards for construction innovators with high variance being
shown on the priority rating for this factor. In the sample surveyed, ‘product
innovators’ expressed support for the performance-based strand of the Building Code
of Australia, but ‘process innovators’ did not see this as relevant or significant to their
innovation delivery. It may be that this is simply a reflection of whether or not the
innovation had a direct competitor among ‘deemed to satisfy’ or traditional
prescriptive standards. This was unlikely to be the case for those innovators not
involved in residential construction. The cost burden of regulation compliance for
small business was mentioned as a barrier to innovation by SMEs generally. This
area deserves further attention.
The prevailing assumption among governments in market economies has long been
that technological change is generated primarily by large firms and by specialist
research institutions (Acs and Audretsch 1990; Acs 1999; Acs et al. 2009). For a long
time, the role of small firms and entrepreneurship has been regarded as fairly
insignificant in the innovation process (Acs et al. 2009, p.3). This study provides
some support for the contention that this is not necessarily so. With appropriate
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support, even SMEs in traditional industry sectors like construction, may prove able
to generate, develop and deliver significant changes in standard practice. Government
policies should, therefore, avoid excluding this option by the way they frame
incentives for research and development. Technical innovation remains a central
component in the generation of new economic value. As such, a certain level of
open-mindedness to new ideas independent of their source, should guide those who
set the parameters for research support (Shane 2008).
9.6 Contribution of this research
This thesis has attempted to address the research question of ‘What are the factors
which affect the successful delivery of technical innovations by construction industry
SMEs in Australia?’ The researcher has taken a mixed method approach, because the
research field is comparatively immature and an exploratory, rather than a definitive
process was considered to be more likely to yield useful conclusions. The
quantitative and qualitative strands of the research did, indeed, yield results that were
both complementary and divergent for different factors. The sample sizes are small,
but necessarily so, because of the strict eligibility criteria for the study. While caution
needs to be exercised in extrapolating the results from this study to SMEs generally,
the study does yield significant insights into the processes undertaken by successful
SME innovators. The results presented here can inform future studies in the area of
SME innovation delivery.
The research undertaken for this thesis has identified ten factors that resist change and
innovation in the construction industry. As listed in Chapter 1, these are:
1) The proliferation of many very small businesses who have difficulty
surviving let alone introducing innovations;
2) Insecurity of much employment in the industry;
3) The tacit and individualised nature of much of industry experience, skills
and knowledge;
4) Lack of expertise in, and value placed on, human resource management;
5) Contractual risk shifting towards those who can least afford to bear the
cost;
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6) Its temporary project-based nature;
7) Procurement systems which stress lowest price rather than best value;
8) The complexity and lack of integration in existing industry supply
chains;
9) Resistance to standardisation and modularisation because of the inherent
diversity of industry participants;
10) Self-perceptions of the industry’s nature which limit both top-down and
bottom-up innovation.
Despite the existence of these impediments, this thesis has reported on the activities
of successful SME innovators who have been able to overcome this cultural
background. While these successful technical innovators may be atypical with
respect to other construction SMEs, nevertheless, their experience can yield some
useful lessons for all construction companies. Five principal factors that enabled
these SMEs to deliver their technical innovations have been identified as:
1) Project-based conditions;
2) Client and end-user influences;
3) Regulatory climate;
4) Industry networks;
5) Company resources.
Contributing sub-factors have also been identified and prioritised. Exemplars of
successful technical innovation delivery by construction SMEs have been described
as an illustration of good practice.
The principal qualitative finding of this research is that specific areas of expertise
beyond that of construction technology are of critical importance to the successful
delivery of a technical innovation in construction. In other words, superior technical
skills are a necessary, but not a sufficient condition for the effective delivery of a
technical innovation. Soft skills relating to people management and networking are
significant to the delivery process, as are a high degree of economic understanding,
marketing and business planning skills. A great idea for a technical innovation is not
enough in itself to produce a delivered technical innovation. The great idea needs to
be supported by adequate investment, effective research development and testing,
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strong linkages with intra-industry groups and timely delivery into the market. The
successful innovators studied in this research have all managed, in one way or
another, to acquire this diversity of skill-sets. They may not have had the appropriate
skills or training at the commencement of the innovation process, but they either
formed connections with people who did or they expanded their own skill-set to meet
the need. The high-level innovators in the study appear to form a distinct group
among SME construction companies, as signified by the fact that they have largely
overcome the limitations caused by internal company resources.
A secondary finding is that industry bodies and government departments are able to
assist overall industry performance by providing access to advice on achieving
competence in business and human resource management to SME managers who may
not already be in possession of such skills. This research supports the idea that
investment in such services would have a positive effect on industry innovation and
may lead to a more efficient and forward looking construction sector. Given the
importance of the sector to the overall economy, as well as to the quality of life of the
human beings who live and work in the built environment, a better performing
construction sector would have benefit far beyond the limited bounds of the industry
itself.
The work undertaken in this thesis specifically develops the theory of innovation by
providing evidence that, contrary to classical Schumpeterian theory, construction
SMEs are capable of generating and successfully delivering significant technical
innovations. Furthermore, this research stresses the critical significance of non-
technical inputs in the delivery of technical innovation by SMEs. When large
companies generate and develop a technical innovation, it is likely that they will call
upon specific expertise in the fields of capital investment, market research,
intellectual property and product placement. The smaller the business, the less likely
it is that such expertise will be available ‘in house’ or via existing relationships.
Consequently, the vital importance of making these skills available to potential SME
innovators is the chief contribution this thesis has to make to the general academic
discourse on innovation in the construction sector.
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9.7 Summary of outcomes from the research objectives
The six research objectives identified in Section 1.2 of this thesis have been met in the
following ways:
• Identify a series of possible factors which impact on the successful delivery of
a technical innovation by a construction SME; The possible factors were
identified from a review of published literature and synthesised into the Value
Tree presented on p.102 in Chapter 5 of this thesis.
• Prioritise those factors via a structured survey of successful SME innovators;
An AHP survey of 21 established technical innovators was undertaken and the
priorities generated were presented in Table 6.1, p.132. The method is able
establish robust priorities, even in the face of some inconsistency in human
value judgements.
• Illustrate the survey outcome by descriptive case studies of successful
innovation delivery; Seven case studies have been presented in Chapter 7.
These represent a variety of different kinds of technical innovation. They
demonstrate that a relatively high level of originality as defined in the Oslo
Manual (2005) can be achieved by SME construction firms.
• Provide encouragement for interested parties such as other construction
SMEs who are considering introducing a technical innovation; The case
studies, in particular, provide this encouragement, as they illustrate some
occurrences of strategic decision making leading to successful innovation
delivery. The strategies employed, such as the use of industry open days, an
emphasis on appropriate in-house training and the use of the broader media to
publicise new ideas, are all possible options for aspiring innovators.
• Provide advice for government bodies, professional and industry associations
who wish to foster a culture of innovation in the construction industry;
Sections 9.3 and 9.5 of this chapter specifically address ways that innovation
performance can be assisted by interested parties in government and the wider
industry.
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• Indicate possible strategies for universities and other research institutions on
how they can best contribute to SME innovation. Section 9.4 of this chapter
raises specific issues for academic researchers. In particular, university
researchers need to be aware of the different priorities and time frames under
which SMEs operate and be more cooperative in their dealings with small
business and potential innovators.
These objectives having been delivered, attention turns to areas of potential future
research.
9.8 Future research directions
Several avenues suitable for further inquiry are opened up by this research. Firstly,
the documentary data collected for this thesis is suitable for encoding with text-
matching software (NVIVO9). This further avenue of qualitative research may yield
new insights into the behaviour of technical innovators. It will be undertaken in the
light of the established patterns of innovation generation and diffusion as defined by
Rogers (2003).
Secondly, as this research only looked at successful innovators, there remains the
question of the factors affecting aspiring innovators. This includes those who may
have been less than successful in the past. These groups may, or may not, prove to
have similar motivations. Research on a larger scale, taking a representative sample
of SMEs and studying what they believe is necessary to lift their innovation
performance, has considerable potential for future economic value.
Thirdly, as some significant differences were found between small and medium-sized
innovating firms, albeit less than expected, these differences could be tested using a
larger Australia-wide sample. It may be that small businesses require a particular
level of support, beyond that necessary for medium-sized businesses in order to
deliver their innovative ideas to the market. Whether this support is best provided by
government departments themselves, or primarily by professional and industry bodies
with some government subsidy, is another question for further research.
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The particular needs of micro-businesses have not been addressed in this thesis, but
potentially the gains to be made from researching this area are very large, due to the
numbers of businesses involved. During the search for non-micro SMEs who had
delivered technical innovations, some micro-businesses were identified. They could
form the core of future research into the grouping.
Data collection for this thesis was geographically restricted to Sydney and the
surrounding region. Future research along the same lines in other areas could
potentially examine the effect of innovation clusters, as well as whether interaction
between high-level innovators assists innovation delivery. Innovation has been
widely reported to occur in clusters both temporally and spatially (Feldman and
Kogler 2008). A broad scale study to observe these effects in the Australian context
is a potential future direction for innovation research. It may be that networking
between innovators can provide the spark for new and improved technical
innovations. This phenomenon has not yet been closely studied in the context of the
Australian construction industry.
Finally, the matter of the differing priorities of innovating firms at different stages of
innovation delivery, could be the subject of much further inquiry. This matter was
raised by the innovators themselves, during the open-ended survey comments. The
effectiveness of government assistance programs targeted at innovation could greatly
benefit from a rich-textured understanding of what the innovators need at different
points in the innovation cycle.
9.9 Conclusion
Like all entrepreneurial activity, innovation delivery focuses on the recognition and
pursuit of opportunity. Individuals with foresight can make significant contributions
towards the development of new and more efficient technical solutions to industry
problems. It is particularly true in the construction industry, that those who deal day-
to-day with construction project delivery, are likely to have ideas about how products
and processes could be improved. Provided that appropriate support is available, the
flexibility and responsiveness of SME structure, has the potential to allow such ideas
to blossom and develop into realistic solutions. The policy settings of governments
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280
should make allowance for this possibility. Certainly, regulators and other
government bodies should avoid putting unnecessary obstacles in the path of potential
SME innovators.
Research into construction SME technical innovation has the potential to generate
spill-over innovations, which may significantly improve the performance of the
construction industry in economic terms, as well as, on environmental and social
parameters. Modern economic theory acknowledges the significance of motives other
than the simple ‘bottom line’ of economic benefit. While some economic theory has
suggested that research and innovation should remain the province of large businesses
with surplus resources to devote to speculative ventures, this is not always the case.
This research has shown that innovations motivated by pressing economic,
environmental and social issues, can sometimes be generated by SMEs, even in a
conservative industry like construction. As well as benefiting these likely future
priority areas, technical innovation in construction can indirectly make an important
contribution to the prosperity and the standard of living of Australians generally.
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APPENDICES
Appendix 1 – Survey Script
Question 1:
Thinking of your most successful technical innovation which was more important in assisting the delivery process company resources or client and end-user inputs?
Company resources Client end-user influences
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 2:
Thinking of your most successful technical innovation which was more important in assisting the delivery process company resources or project-based conditions?
Company resources Project-based conditions
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 3:
Thinking of your most successful technical innovation which was more important in assisting the delivery process company resources or industry networks?
Company resources Industry networks
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
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Question 4:
Thinking of your most successful technical innovation which was more important in assisting the delivery process company resources or the regulatory climate?
Company resources Regulatory climate
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 5:
Thinking of your most successful technical innovation which was more important in assisting the delivery process client and end-user inputs or project-based conditions?
Client end-user inputs Project-based conditions
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 6:
Thinking of your most successful technical innovation which was more important in assisting the delivery process client and end-user inputs or industry networks?
Client end-user inputs Industry networks
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 7:
Thinking of your most successful technical innovation which was more important in assisting the delivery process client and end-user inputs or the regulatory climate?
Client end-user inputs Regulatory climate
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
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Question 8:
Thinking of your most successful technical innovation which was more important in assisting the delivery process project-based conditions or industry networks?
Project-based conditions Industry networks
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 9:
Thinking of your most successful technical innovation which was more important in assisting the delivery process project-based conditions or the regulatory climate?
Project-based conditions Regulatory climate
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 10:
Thinking of your most successful technical innovation which was more important in assisting the delivery process industry networks or the regulatory climate?
Industry networks Regulatory climate
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
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Second level comparisons
Question 11:
Thinking of your most successful technical innovation which was more important personal motivation or available finance?
Personal motivation Available finance
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 12:
Thinking of your most successful technical innovation which was more important personal motivation or available time?
Personal motivation Available time
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 13:
Thinking of your most successful technical innovation which was more important personal motivation or available skill levels?
Personal motivation Available skill levels
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
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Question 14:
Thinking of your most successful technical innovation which was more important personal motivation or insurance and risk?
Personal motivation Insurance and risk
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 15:
Thinking of your most successful technical innovation which was more important available finance or available time?
Available finance Available time
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 16:
Thinking of your most successful technical innovation which was more important available finance or available skill levels?
Available finance Available skill levels
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 17:
Thinking of your most successful technical innovation which was more important available finance or insurance and risk?
Available finance Insurance and risk
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
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Question 18:
Thinking of your most successful technical innovation which was more important available time or available skill levels?
Available time Available skill levels
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 19:
Thinking of your most successful technical innovation which was more important available time or insurance and risk?
Available time Insurance and risk
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 20:
Thinking of your most successful technical innovation which was more important available skill levels or insurance and risk?
Available skill levels Insurance and risk
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 21:
Thinking of your most successful technical innovation which was more important procurement system or client characteristics?
Procurement system Client characteristics
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
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Question 22:
Thinking of your most successful technical innovation which was more important supply chain relationships or solving problems that occur on site?
Supply chain relationships Solving problems that occur on site
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 23:
Thinking of your most successful technical innovation which was more important supply chain relationships or improving OH&S?
Supply chain relationships Improving OH&S
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 24:
Thinking of your most successful technical innovation which was more important solving problems that occur on site or improving OH&S?
Solving problems that occur on site Improving OH&S
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 25:
Thinking of your most successful technical innovation which was more important professional and industry associations or research organisations and universities?
Professional and Industry associations Research organisations and universities
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
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Question 26:
Thinking of your most successful technical innovation which was more important performance-based standards or local government regulations?
Performance-based standards Industry standards
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 27:
Thinking of your most successful technical innovation which was more important performance-based standards or industry standards?
Performance-based standards Local government regulations
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
Question 28:
Thinking of your most successful technical innovation which was more important local government regulations or industry standards?
Industry standards Local government regulations
9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9
Much more important More important Equal value More important Much more important
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Appendix 2 - Participant Information Sheet
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Appendix 3 – Participant Consent Form
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Appendix 4 – International definitions of SMEs NOTE: The citations in this appendix are included in the main reference list.
Context
The Australian construction industry is characterised by having many small
businesses and sole operators (Australian Bureau of Statistics 2004). These
businesses account for the majority of industry employment and a significant, though
lesser, slice of industry contribution to Gross Domestic Product (de Valence 2010a).
The tendency for the construction industry to contain many small businesses is a
widely studied phenomenon in several different economies. Examples include Revell
and Blackburn (2007) in the United Kingdom; Hassanien and Adly (2008) in Egypt;
Tang et al. (2007) in China; Hua (2007) in Singapore; De Jong and Vermeulen (2006)
in the Netherlands; Navickas et al. (2006) in Lithuania; Acar et al. (2005) in Turkey;
Jaafar and Abdul-Aziz (2005) in Malaysia; Maes et al. (2005) in Belgium; Yavas et
al. (2004) in the United States; and Eyiah (2001) for several parts of Africa. The only
notable exceptions to this rule appear to be some of the transition economies of the
former USSR and Eastern Europe (Istomina 2005; Orlov 2003; Khodov 2003) where
SMEs still represent a relatively small proportion of employment and GDP as a result
of the predominance of government owned enterprises.
The widespread nature of construction SMEs may be due to the relatively low entry
barriers to establishing a construction business and to the traditional craft and trade
base of much construction industry activity, especially in the housing sector. While
the potential for economic growth at the very small or micro-business end of the
spectrum is by definition large, it can be contended that the limitations on what can
easily be achieved are equally large. As a result, this thesis has opted to exclude
micro-businesses employing less than five people from its study area. It has instead
focussed on the small to medium sector other than these micro-businesses.
Businesses employing five or more people (upper limit 200 to be discussed below)
represent a considerable percentage of the industry in gross turnover, contribution to
GDP and employment (ABS 2004) and their potential for efficiency growth is both
significant and achievable. Consequently, it is necessary to statistically define the
population of businesses in the classification area of the study.
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Definitions of SMEs
The definition of what constitutes a Small and Medium Enterprise varies a great deal
depending on the nature of the national economy and the industry sector concerned.
Most definitions are based on number of employees though annual turnover,
capitalisation and company structure are also included in some definitions (Loecher
2000). In general, larger economies such as the United States of America (USA) set
the maximum bar higher as regards inclusion in the category of small business. The
European Union has an agreed definition and the World Bank has attempted to define
the term in an international context, including both developed and developing nations.
In Australia, the Australian Bureau of Statistics has its own definition which varies in
the detail from the other definitions and is based on data collected through the system
of Australian Business Numbers (ABNs).
USA definition
The American Government’s Small Business Administration has existed since 1953
as an independent agency of the federal government. It has a general definition of a
small business for research purposes as “an independent business having fewer than
500 employees” (American Small Business Administration 2010). The qualifying
descriptor “independent” is included to ensure that wholly owned subsidiaries or
affiliates of larger companies are excluded whatever their company structure may be.
To be eligible for various assistance packages, the business must be independently
owned and operated and it must not be dominant in its field of operation. When
looking at a specific industry, factors such as the structure of the industry, the degree
of competition, average firm size, start-up costs and existing entry barriers are
considered (American SBA 2010). The primary qualifying factor may be either
employee numbers or gross annual receipts according to industry classification.
Employee numbers are defined as the average number employed over the preceding
12 months and part-time or temporary employees are counted as the same as full-
time. Gross annual receipts are defined as ‘total income’ plus ‘cost of goods sold’.
Net capital gains and taxes collected such as sales tax are not included in this
definition. For the construction industry, the current definition is one of gross receipts
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(though employee numbers have been used in the past). The qualifying total as at
October 2010 is $US33.5 million in gross receipts for the previous twelve months.
The terminology of SME is not used in the American regulatory context. Companies,
partnerships or other entities are defined as either ‘small’ or ‘not small’. The US
definition of a small business would include many businesses considered both large
and medium-sized in other jurisdictions, especially in developing countries. It
contains important caveats to exclude companies who might try to structure their
operations by separating them into a number of apparently independent companies,
but retaining control in the hands of the parent organisation. There are significant
penalties for attempting to gain benefit by misrepresentation of company size.
European definition
The European Union has had a standardised definition of an SME since 1996
(Loecher 2000). The quantified upper limits as reported in 2000 were:
• Less than 250 employees;
• Maximum 40 million Euro annual turnover;
• Maximum 27 million Euro annual balance sheet total (Loecher 2000).
The maximum monetary qualification limits are in both cases significantly more than
the American limits. This may be largely due to the inclusion of medium-sized
businesses which the American system excludes.
The European definition also distinguishes between different categories of SME. The
micro-business category is defined as having up to nine employees. The small
category is defined as having between 10 and 49 employees and the medium category
as having between 50 and 250 employees. However, as in the USA, it is
acknowledged that there needs to be consideration of factors other than the simple
quantitative factors. The issue of independence and ‘unity of leadership and capital’
also comes into the question. Consequently, a five point qualification list has been
recommended:
• Less than 250 employees;
• Maximum 40 million Euro annual turnover;
• Maximum 27 million Euro annual balance sheet total;
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• Minimum of 75% of company’s assets owned by company management;
• Owner managers or their families manage the company personally (Loecher
2000).
This last point brings up one of the factors which tend to distinguish SMEs from
larger companies. There is usually a nexus between ownership and management. It
is not within the scope of this thesis to test this proposition, but anecdotally it does
appear that most construction SMEs tend to be based on individual or family
ownership.
World Bank definition
A research report commissioned by the World Bank began looking into the nature of
SMEs across the globe in 2003 (Ayyagari et al. 2003 & 2007). The report collected
data from 76 countries using local definitions of SMEs. Both the formal and informal
sectors were included and this made a significant difference to the results in less
developed economies. The upper limit for an SME ranged between 100 and 500
employees, depending on the national definition, with the most common limit being
250 employees. The more developed countries tended to elect the higher range upper
limit although this was not exclusively so. The inclusion of the informal economy in
the figures allowed for a broader capture of the proportion of economic activity
generated by SMEs. It was determined that SMEs constitute most of the economy in
developing nations other than in the transition economies of the former communist
bloc where SMEs are still uncommon. Establishment costs, property rights
protections and efficient credit information sharing were the principal factors that
affected the relative size of the formal SME sector. High costs and inefficient
governance systems tended to contribute to a larger informal economy populated
principally by SMEs.
Australian definition
The Australian Bureau of Statistics has been collecting specific data on SMEs since
the early 1990s. The definition of an SME has varied in the time since statistics were
first separately kept. Initially 100 employees was the cut-off limit, but since 2003 this
has been raised to 200 employees. The SME sector is further sub-divided as between
20 and 200 in medium business and up to 19 employees in small business, with a
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further sub category of micro-businesses consisting of less than five employees (de
Valence 2010). It is this definition that is accepted for the purposes of this study.
While this means that comparisons to the collected data from other nations are limited
by the different cut-offs, this is more than compensated for by the consistency of the
government collected data. Year-to-year comparisons within Australia have a high-
level of validity due to the structural nature of how information is collected. The
comparison between the various international definitions is shown in Table A4.1
overleaf.
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Table A4.1 Comparison of international definitions
Definition Employee numbers Income limit Additional requirements
American Small Business Administration
< US$33,500,000 (A$36,046,000 as at 1st May 2010)
Must be independently owned and operated
Must not be dominant in its field of operation
European Union
< 250 employees
(Micro-business < 10 employees, Small business between 10 and 49 employees and Medium business between 50 and 250)
< 50 million Euro annual turnover (A$71,250,000 as at 1st May 2010)
< 43 million Euro annual balance sheet total
(A$61,275,000 as at 1st May 2010)
Lower limits apply for small and micro-businesses
Minimum of 75% of company’s assets owned by company management
Owner managers or their families manage the company personally
World Bank Between 100 and 500 upper limit depending on country
250 most common limit
Australian Bureau of Statistics
< 200 employees (Micro-business has < 5 employees, Small business between 5 and 19 and Medium business between 20 and 200)