design checking guidelines

Manual for Building Design Checking & Procedures for Outsourcing Table of Contents

Ministry of Infrastructure 1

FEDERAL DEMOCRATIC REPUBLIC OF ETHIOPIA

MINISTRY OF INFRASTRACTURE

MANUAL FOR BUILDING DESIGN CHECKING AND

PROCEDURES FOR OUTSOURCING

February 2005



FOREWORD

The Proclamation No. 256/94 E.C (256/2001) of the Federal Democratic republic of Ethiopia empowers the Ministry of Infrastructure to prepare the Country's Building Code, issue Standards and Guidelines for design and construction works, registration of professionals and consultants and follow up and supervise the implementation of same.

In exercising these powers and in discharging of its responsibilities, the Ministry is issuing a series of Building Code Standards, Manuals and Guidelines of general application, one of which is the following “Manual for Building Design Checking and Procedures for Outsourcing”. The purpose of these documents is to serve as nationally recognized documents, the application of which is deemed to ensure compliance of constructions with the minimum requirements for design, design checking, procurement procedures, construction and quality of materials set out by the Ministry. The major benefits to be gained in applying these documents are the harmonization of professional practice and the ensuring of appropriate levels of safety, health and economy with due consideration of the objective conditions and needs of the country. As the documents are technical documents, which, by their very nature, require periodic updating and revised editions will be issued by the Ministry from time to time as appropriate. The Ministry welcomes comments and suggestions on all aspect of the documents. All feedback received will be carefully reviewed by professional experts in the field with a view to possible incorporation of amendments in the future editions.

Kassu Yilala(Dr) Minister




PREFACE This Manual for building design checking and procedure for outsourcing and design checklist for the purpose of checking building designs has been prepared by the Ministry of Infrastructure (MOI) for use by Employers, Design Consultants and Design Checkers for Building Projects. The document has three sections; section 1 being the Manual for building design checking, section 2 contains the Procedures for Outsourcing and section 3 deals with the Checklists for Architectural, Structural, Electrical, Sanitary, Plumbing & Mechanical designs; Specifications(Bill descriptions) and priced Bill of Quantities, the Drawing Standards and requirement of details; and Bidding and Contract Documents. The document is prepared based on the existing "Revised Check-list”, Office Engineering Service, MOI, August 1999 and the Terms of reference issued for the study.



ACKNOWLEDGEMENT

In August 2004, An agreement was made between GTZ Office Addis Ababa on one part and SB Consult Consulting Architects and Engineers and Life Consult PLC on the other part for the preparation of the Manual for building design checking and procedure for outsourcing and the revised design checklist. After presentation to the Ministry of Infrastructure (MOI), a workshop was arranged and the draft document prepared was commented on by professionals of the Ministry and other invited institutions and individuals on the workshop.

The MOI wishes to acknowledge the contributions made by the GTZ Office Addis Ababa for financing the study.

The Ministry also wishes to acknowledge the contributions made by SB Consul Consulting Architects and Engineers and Life Consult PLC and the associated professionals involved in its preparation and to thank all those who made comments.



TABLE OF CONTENTS

PAGE FOREWORD ………………………………………………………………………i

PREFACE ………………………………………………………………………….ii ACKNOWLEDGEMENT…………………………………………………………iii SECTION 1: MANUAL FOR BUILDING DESIGN CHECKING ..1 1.0. BACKGROUND ...............................................................................................2

1.1. Introduction.................................................................................................2 1.2 The Past Experience.....................................................................................3 1.3 Checking and Follow-up Processes ............................................................3

1.3.1. Pre-design ......................................................................................3 1.3.2. Pre-construction ..............................................................................4 1.3.3. Construction Phase .........................................................................4

1.4 Preliminary Survey .....................................................................................5

1.4.1 General ............................................................................................5 1.4.2 Findings of the survey .....................................................................8

2.0. OBJECTIVES OF DESIGN CHECKING AND OUTSOURCING OF THE CHECKING .............................................................................................9

2.1. Objectives of the Design Checking..............................................................9 2.2. Objectives of the Outsourcing of the Design Checking ..............................9

3.0. COMPONENTS OF THE CHECKLIST & DESIGN CHECKING ...........10 3.1. Components of a revised checklist ..............................................................10 3.2. Components for design checking.................................................................10

3.2.1 Components of a complete checking .................................................10 3.2.2 Details of design checking requirements ...........................................11

3.2.2.1 Architectural...................................................................................11 3.2.2.2 Structural .......................................................................................12 3.2.2.3 Sanitary, plumbing and Mechanical Installation............................14 3.2.2.4 Electrical Installation .....................................................................15 3.2.2.5 Cost control ....................................................................................15 3.2.2.6 Standard of drawings and documents ............................................24 3.2.2.7 Bidding and Contract Documents ..................................................28



TABLE OF CONTENTS

PAGE SECTION 2: PROCEDURES FOR OUTSOURCING…………………34 1.0. SYSTEM FOR SCREENING & REGISTRATION (CERTIFICATION)

OF DESIGN CHECKERS ................................................................................35 1.1. Rejection of Application ............................................................................35 1.2 Suspension of Registration Certificate .......................................................36 1.3. Cancellation or revocation of Certificate ...................................................36

2.0. ROLE OF THE MINISTRY IN OUTSOURCING DESIGN CHECKING ....................................................................................................... 37

2.1. Pre-design Stage Checking .......................................................................37 2.2. Continuation of small and medium projects checking ..............................37 2.3. Receiving copies of letters of transmission of design drawings and

documents to checkers from Employers ...................................................37 2.4. The Ministry shall classify the Projects…………………………………. 38 2.5. Mode of Design Document Submission………………………………….38

2.5.1. Preliminary Designs………………………………………… 38 2.5.2. Final Designs…………………………………………………38

2.6. Taking over of the reports, preliminary and final designs and documents from the checkers …..…………………………………..39 2.7. Supervision and evaluation of the checkers’ activities.…………………..39 2.8. Settlement of Disputes ..............................................................................39

2.8.1. Amicable settlement ................................................................39 2.8.2. Dispute settlement by the Ministry .........................................39

3.0. THE DUTIES AND RESPONSIBILITIES OF THE EMPLOYERS...........40 4.0. THE RELATIONSHIP BETWEEN THE MINISTRY AND THE DESIGN CHECKER …………………………………………………...40 5.0. THE DUTIES AND RESPONSIBILITIES OF THE CHECKERS………..40 6.0. THE RELATIONSHIP BETWEEN THE EMPLOYER, DESIGN

CONSULTANT AND DESIGN CHECKER………………………………..42



TABLE OF CONTENTS

PAGE 7.0. FEE AND PAYMENT MODALITIES FOR THE DESIGN

CHECKERS……………………………………………………………….….42 7.1. Determination of staff month ……………………………………….… .42 7.2. Determination of Checking Fee………………………………………....42 7.3. Payment Modalities………………………………………………….….45

7.3.1. Weight of checking activities by design stages .....................45 7.3.2. The design checker’s activities by disciplines .......................45

SECTION 3: CHECK-LISTS ………………………………………………46 INTRODUCTORY REMARKS ON CHECK-LIST…………………………….47 CHECK-LIST FOR ARCHITECTURAL DESIGN CHECKING……………..48 CHECK-LIST FOR STRUCTCTURAL DESIGN CHECKING ………………61 CHECK-LIST FOR SANITARY, PLUMBING AND MECHANICAL DESIGN CHECKING ……………………………………………………………74 CHECK-LIST FOR ELECTRICAL DESIGN CHECKING …………………..85 CHECK-LIST FOR SPECIFICATIONS(BILL DESCRIPTIONS) AND PRICED BILL OF QUANTITIES …………………………………………97 CHECK-LIST FOR DRAWING STANDARDS AND REQUIREMENTS OF DETAILS……………………………………………………………………….112 CHECK-LIST FOR BIDDING AND CONTRACT DOCUMENTS…………...119

ANNEXES

ANNEX I : TYPES OF BUILDINGS ……………………………………………..123 ANNEX II: LETTER OF CONFIRMATION ........................................................129 ANNEX III: DUTIES, RESPONSIBILITIES AND QUALIFICATION

REQUIREMENTS OF DESIGN CHECKERS ................................131 ANNEX IV: AGREEMENT FOR DESIGN CHECKING SERVICES ...............133



SECTION 1

MANUAL FOR BUILDING DESIGN CHECKING



SECTION 1

MANUAL FOR BUILDING DESIGN CHECKING

1.0. BACKGROUND

1.1 Introduction The checking of designs and documents and project follow-up for government building works has been an ever going process probably started at the establishment of the first Ministry of Public Works, definitely as early as the 1950's. This service is rendered by the Ministry or Agency designated for the service on behalf of Government Agencies. Although the extent of Government Ministries and Agencies required to get their projects checked has been variable, the principle has remained the same under all Governments. After the creation of the Ministry of Infrastructure (MOI) in 2001, the respective proclamation act orders that design checking of all Federal construction projects be undertaken by the MOI. The in house capacity of the Design and Construction Supervision Office to implement this task is limited due to increasing number of projects and a smaller number and not motivated qualified personnel and lack of adequate hardware and software. Design checking therefore, takes from 2 months to one year constraining construction programs and leading to a high number of complaints in regard to the performance of the Ministry. Roughly 40 projects amounting between Birr 1 million and Birr 100 million are to be checked per annum. The checking refers to the following areas on the basis of an agreed upon Checklist: • Architectural Design; • Structural Design; • Electrical Design + Elector-Mechanical Design; • Sanitary, plumbing and Mechanical Design; and • Bill of Quantities and cost control.



In order to speed up the checking process, and improve the quality of design, it is proposed to outsource the checking to the Private Sector supervised by the Design and Construction Supervision Office of the Ministry. Too many projects are flourishing from the private sector and this Design Checking Manual can as well be used for the privately owned projects.

1.2 The Past Experience

The design and documentation checking and project follow up were being conducted because of the desire of the government to have cost effective, functional and safe structures. Although the cause is noble, it also had its drawbacks as it was extremely time consuming, not cost effective and one of the major reasons for unbearable delays in project execution. This after effect, is not an attribute of the requirement itself, but a result of the bureaucratic process set up, lack of adequate number and experience of checkers, the absence of clearly defined terms of reference for the checkers on what should be reviewed and incomplete and non-exhaustive existing checklists. Design checking is therefore, taken as an evil rather than a noble process. This trend needs to be reversed and render design checking and project follow-up an effective and dynamic process that would be undertaken by partnership of the parties involved in the project. To meet this end, this revised design checking and project follow-up guideline (manual) is prepared.

1.3. Checking & Follow-Up Processes

In line with the Constitution of the Federal Government of Ethiopia, the Federal Government is responsible for the checking and follow-up of projects that are financed by itself including loans and grants to the Federal Government. Parallel with this, the jurisdiction of project checking and monitoring of non-federal government projects falls within the power of the respective Regions for projects financed by them. In general, project checking and monitoring is a three stage process. These stages are:

1.3.1. Pre-design

In this stage of service, the checking institution reviews the programme requirements of the Implementing Agency and compares the same to the available budget or the magnitude of fund that the Agency can avail for the works. The Institution’s entitlement to the plot on which it intends to build is also checked. If the above conditions are satisfied, i.e. programme, fund and plot usage, the project is approved and the design consultant will be selected by using the appropriate method.



1.3.2. Pre-construction

This is a stage of service, that covers all checking before the construction contract is awarded to a selected contractor. It is to be noted that, the design and document service in this phase is executed by a private consultant, government design agency and the Ministry itself or other delegated government institutions who have the in-house capacity to do so. It should also be further highlighted that, only designs and documents prepared by private consultant go thorough the process of review by the checking institution.

The checking activities involved are:

a. Design checking (concept, preliminary, final) of all disciplines in two or three

stages as applicable. This checking is on drawings, reports and calculations as applicable.

b. Bill of Quantities (for unit rate contracts) and Engineers Estimate checking (the

Engineers estimate checking has been replaced by the designer and checker preparing their independent and confidential estimates recently).

c. Review of the Tender Document before tender. d. Review and checking of the Tender Documents after tender and approval of

Tender analysis and award to selected prospective contractor once the evaluation is completed by the consultant. This last section applies to all private and government design agencies and delegated institutions.

1.3.3. Construction Phase

a. Monitors progress, standard of materials and workmanship through periodic or random inspections or receipt of progress reports;

b. Verification of measurement and payment certificates due to contractors and consultants;

c. Checking and approval of change orders when the rates are new or the total

exceeds set limits; d. Participation in inspection of works at provisional and final acceptances; e. Review and approval of final accounts; and f. Settlement of disputes between Contractors and Clients on contractual matters.

Some of the above have been delegated to Consultants in the last few years.



1.4. Preliminary Survey

1.4.1. General:

Design checking and implementation monitoring is in some form or other carried out in most countries, although its scope is variable. Design checking and monitoring infact, is not limited only to government/public buildings, but includes also the private particularly, when it comes to safety and requirements of urban planning. As the rigorous checking of government projects would undoubtedly contribute to creating a safe, efficient and cost effective environment, methods must be devised to make it efficient and quality based. This can be basically achieved by the following broad methods:

• The improvement of the standards of documents produced by designers and

Project Management capacity building to minimize the requirement of review; • To draw out a revised checking manual, that is specific in requirement and leaves

little room for subjective evaluation; and • To use experienced personnel with broad outlook and value judgment, both in

government services and the private sectors.

In the interest of getting feedback on past experience and proposals for the future, a questionnaire has been prepared to be answered by the stakeholders in the Sector. These are mainly selected Clients, Contractors, Consultants, Design Checkers and Individual practicing professionals. Ministry of Educations, Ministry of Health, Ministry of Defense and Ministry of Infrastructure are the four ministries selected to respond to the questionnaire They are selected for they are closely related to the design and checking activities. Three Contractors have been selected and the questionnaire has been sent to them. Since Contractors are not mainly affiliated with the design checking, the number was kept small intentionally.

Thirteen consultants have been contacted to respond to the questionnaire. The Civil Engineers Association was considered as the fourteenth one. Since Consultants are the main stakeholders of the project their numbers are raised relatively high. Six senior individual practicing professionals who are designers and design checkers have been selected to respond to the questionnaire. The above mentioned stakeholders have been selected by considering their acquaintance with the current design and document checking processes.



The feedback obtained from the questionnaire together with other inputs are used to elaborate the manual for building design checking, procedure for outsourcing and checklist. Regarding the results of the responses of the questionnaire, only the pertinent sections related to the checking processes are taken and summarized in the following table. It could be concluded from the extracted points that “Design Checking by Outsourcing” is a timely and noble exercise.

TABLE 1: Table showing results of the responses for the questionnaire from

Consultants, Individual Professionals and Government Ministries

No

Pertinent section of the questionnaire

Responses of

consultants (in %)

Responses of

Individuals (in %)

Responses of Government

Ministries (in %)

Average (in %)

1 Are you familiar with the current design and document checking process? Yes No

100 0

100 0

100 0

100 0

2 Do you think the current level & form of design & document checking should continue as it is now? Yes No

0

86

0 83

0 100

0 89.7

3 What are the improvements, that you think should be made to make design and document checking efficient and user friendly? a. Over whole the system of design & document checking b. Modify the checklist only c. Use experienced government employees sector d. Outsource checking to the private sector e. Use both ( c ) and (d) f. None of the above

57 0 7

21.5 57 0

66.7 0 17

33.3 17 0

25 0 0 25 50 0

51.7 0 8

26.6 41.3

0

4 Do you think all projects and consultants receive equal & fair treatment by the checking institution? Yes No

14 78.5

100 0

25 75

46.3 51

5 Do you think consultants produce the right kind and standard of design & other documents in compliance with accepted standards, at stage of checking? Yes No

21.4 64.3

0 83.3

0 100

7.1 82.5

6 Do you believe that, the private sector has better potentials(both in experience, skill and resource)to check projects compared to the government institution? Yes No

78.5 14.3

83.3 0

75 0

78.9 4.8



TABLE 1: Table showing results of the responses for the questionnaire from Consultants, Individual

Professionals and Government Ministries (continued)

No

Pertinent section of the questionnaire

Responses of

consultants (in %)

Responses of

Individuals (in %)

Responses of Government

Ministries (in %)

Average (in %)

7 If both the government & the private sector were to be considered as partners in project checking, what roles should each play?

The common suggestions made were the following: - The Government should concentrate on controlling the

policies adopted, setting directives and control mechanisms; - The private sectors based on the government’s policies will

carry out detail project works including checking. - The role of the government and the private sector in project

checking should be seen in the modern thinking dimension of public private partnership.

8 Do you think the current checking system fairly concentrates on safety, function and cost effectiveness(within budget limit) or is a reflection of the desire of the individual checkers?

The common remarks made were: - The current checking system does concentrate on safety,

function and cost effectiveness; - The roll of the individual checker in reflecting his or her

own desire is not to be totally ignored; - The implementation of the checking system has no control

mechanism to avoid the inefficiencies that are to be created by the individual checkers.

9 Do you think there is substantial variation between the methods used by individuals in design checking that would categorize the service as subjective? Yes No

50 28.5

33.3 66.7

25 75

37 56.7

10 How far do you think should the design checker (institution) be involved in a project?

a. Design checking only b. Design & cost checking c. Construction Management to final acceptance d. All of the above e. None of the above f. Others

21.4 42.8 14.3 28.6

0 0

16.7 50 0

33.3 0 0

25 0 25 75 0 0

21 30.9 13.1 45.6

0 0

11 If design and document checking is to be outsourced, who do you think should check design & documents?

a. Experienced and qualified individuals b. Selected qualified consultants c. Professional Associations d. Universities(relevant Department) e. Others

50 71.4 14.3 14.3

0

100 83.3 16.7 16.6

0

75 25 25 0 0

75 59.9 18.7 10.3

0 12 Who do you think should set the criteria and select design

checkers, if the jobs are to be outsourced? a. Ministry of Infrastructure b. Professional Associations c. Consultants Associations d. None of the above e. Others

71.4 21.4 35.7

0 0

50 50

33.3 0 0

75 25 0 0 0

65.5 32.1 23 0 0



1.4.2. Findings of the Survey:

From the above table, the following pertinent points are concluded: 1. All the represented consultants, individual professionals and Government

Ministries are familiar with the current design and document checking process; 2. Most of them(almost all of them) agreed that the current level & form of design &

document checking should not continue as it is now;

3. Most of them agreed that over whole the system of design & document checking need improvements to make design and document checking efficient and user friendly. For the improvement, they have recommended the use of experienced government employees and outsourcing checking to the private sector;

4. The majority of them expressed that all projects and consultants do not receive equal & fair treatment by the checking institution;

5. Most of them believed that consultants do not produce the right kind and standard of design & other documents in compliance with accepted standards, at stage of checking;

6. Most of them believed that the private sector has better potentials(both in experience, skill and resource) to check projects compared to the government institution;

7. The majority of them believed that there is no substantial variation between the methods used by individuals in design checking that would categorize the service as subjective;

8. Most of the consultants and individual professionals suggested that the design checker (institution) be involved in Design & cost checking while Government Ministries recommended that the checking should include also Construction Management to final acceptance of a project;

9. Most of the individual professionals & Government Ministries believed that, if design and document checking is to be outsourced, experienced and qualified individuals should check designs & documents while consultants recommended that selected qualified consultants should do the checking;

10. Most of them recommended that the Ministry of Infrastructure should set the criteria and select design checkers, if the jobs are to be outsourced; and

11. Most of them agreed that the Government as regulatory body, should concentrate on controlling the policies adopted, setting directives and control mechanisms. The private sectors based on the government’s policies should carry out detail project works including checking. The role of the government and the private



sector in project checking should be seen in the modern thinking dimension of public private partnership.

2.0. OBJECTIVES OF DESIGN CHECKING AND OUTSOURCING OF

THE CHECKING The objectives of introducing a modern system of design checking by using resources available outside of the civil service (by outsourcing), are presented below.

2.1. Objectives of the design checking:

The overall objectives of the design checking are to:

a. meet the requirements of public safety against structural damage, fire and other

hazards when buildings are constructed; b. have optimum design solution in consideration of safety and cost in the building

structures; c. ensure functionality, client's prospect in general and particularly the target,

reasonably comfortable occupancy both for space volume and climate and to have good composition in integrating different volumes when buildings are designed;

d. be provided Sanitary, Mechanical, Electrical, etc components in adequate size,

number etc and to the required standards; e. guarantee that materials for all works meet the intended purpose and are also within

reasonable budget limits of the total works; and f. make the documents that are produced following the design and required for pricing

shall be of acceptable standards based on agreed upon specifications, methods of measurements and schedules.

2.2. Objectives of the Outsourcing of the Design Checking

The over all objective of the outsourcing of the design checking to resources available outside of the civil service is to: a. establish a cost-efficient system for design checking; b. guarantee high quality and speedy processing; c. reduce the bureaucracy to the minimum possible; and



d. capture the specialized professionals in the private sector. The guiding principle is "to ensure public safety of structures, and economical, feasible and quality designs, thereby, regulating as little as possible and as much as necessary". This shall be achieved without compromising safety.

Transparent, speedy and high quality design checking will promote investment and economic development through private public partnership and a stronger involvement of the private sector in tasks that can be delegated to the private sector under the overall supervision of the Ministry.

3.0. COMPONENTS OF THE CHECKLIST AND DESIGN CHECHING

3.1. Components of the revised checklist:

The revised checklists are prepared for the following:

a. Architectural Design; b. Structural Design; c. Sanitary, Plumbing and Mechanical Design; d. Electrical Design; e. Bill of Quantities and Cost Control; f. Drawing Standards and requirements of details; and g. Bidding and Contract Documents. The revised checklist is presented in section 3 of this document.

3.2. Components for design checking

The components of a complete checking and the outline of the details to be checked are shown under the following two subsections:

3.2.1. Components of a complete checking:

The components of the compete building design checking shall include the following:

a. Architectural design including programme, proposed site layout and routing of

main services;



b. Structural design; c. Sanitary, plumbing and mechanical design; d. Electrical design; e. Cost control documents; f. Drawing standards and requirements of details; and g. Bidding and contract documents.

3.2.2. Details of design checking requirements

3.2.2.1.Architectural

This component of the checking shall have four stages. The stages are concept or scheme design, preliminary design, draft final design and final design. The draft final and final design stages can be reduced to one provided there are no comments at the draft final design submission stage.

a. Concept or scheme design only for projects that have large scale area

developments like real estates, industrial development, housing etc. The concept to be checked at this stage is the general layout, internal

communications, provision of services, ingress, egress, plot sizes, building sizes, etc.

b. Preliminary design This covers all projects except very small jobs where the process can skip

the preliminary and proceed to final draft preparation.

The checking at this stage shall concentrate on:- • Site layout including detailing of access, parking, main service lines,

location of utilities, entrances, exits, and solutions for levels of buildings and site works. The provision of fencing shall also be considered at this stage.

• The layout shall also be checked for conformity with planning and

municipal regulations and requirements. To this end, building permit from the municipality is required.



• The function and inter-relationship of different functions within a building complex and the site as a whole. This shall take into account flow, occupancy and optimization of space utilization.

• The composition of the different components of the complex and

provision of safety and hazard prevention requirements in accordance with set or accepted and practiced standards.

• The selection of materials of construction and finish in consideration

of the function of the building and available estimated budget. • Comparison of the cost of the project against available budget.

c. Draft final designs

The completeness of all design documents, which shall have: • Plans, elevations, sections • Details in accordance with schedules to be worked out and agreed

upon. • Schedules and specification of finish and specialist materials to be

used in the works. • Deviations for preliminary design and reasons for deviation. • Co-ordination of drawing for sizes of structural elements, passages

and locations of services and other elements to ensure that, overlap has no constraints.

d. Final design

Verification that all draft final design comments have been attended to.

3.2.2.2. Structural

This component of the checking shall have three stages. The stages are preliminary design, draft final design and final design. The draft final and final design stages can be reduce to one provided there are no comments at the draft final design submission stage.



a. Preliminary system layout

This shall be practiced for all projects except for maximum double story buildings and all buildings whose added up floor area is under 1000m2. The checking at this stage shall concentrate on:

• General structural system layout, i.e provision of posts, beam,

structural walls, etc.; • Proposed methods of construction and material (Cast in situ, precast

etc); • Indication of estimated total load on slab, beams, columns, walls,

etc.; • Soil test programmes and justification for the proposed programme; • Special precaution required to meet safety standards, if any; • The proposed software to be used for the design works, if any; and • Overall optimization of design to meet safety and architectural

requirements and cost effectiveness.

b. Draft final design

• Check consistency with preliminary proposal or justification for change if any;

• Check foundation investigation data, results, interpretation and recommendation;

• Check accuracy of proposed method of analysis; • Check correctness of data input for design, used software, output and

interpretation; • Use rule of thumb or experience to verify that outputs and

interpretation are within reasonable range of values and optimum; • Check the correctness of the foundation type recommendation and

design; and • Check detailing of structure members, connections, reinforcement,

etc.



c. Final design


3.2.2.3. Sanitary, Plumbing and Mechanical Installation

This component shall have two stages for complex projects and one stage only for small projects and single unit buildings. The stages are:

a. Preliminary proposal (for complex projects only)

This shall apply for high rise buildings and area development projects. For the definition of complex project, annex I can be referred. The checking at this stage shall be:

• Proposal of site drainage system including recommendation of waste

treatment method; • Estimated capacity of treatment facility justified by approximate

calculations; • Proposed sources of water supply; • Recommend water storage type and capacity;

• Recommend water supply and drainage pipe types; and • Need and type of air conditioning/ventilation, etc, by identifying area

of requirement.

b. Draft final design

• Detail calculations and drawings to verify the preliminary of materials proposal shall be highlighted together with the justification for it; and

• Schedule and fixtures to establish the required standard shall be

prepared.

c. Final design




3.2.2.4. Electrical Installation

This component shall have one or two stages depending on the complexity of the project. The checking at this stage shall concentrate on:

a. Preliminary proposal (for complex projects only)

This shall apply for high rise buildings and area development projects. For the definition of complex project, annex I can be referred. The checking at this stage shall be:

• Estimated total load required, source and ingress; • Requirement for stand-by power (load and generator capacity). The

area of requirement shall also be identified; • Proposed external illumination system and type of fixtures; • Levels of internal and external illumination and proposed fitting type;

and

• Approximate calculation to justify illumination level and total load.

b. Draft final

• Detail calculations and drawings to verify the preliminary proposal shall be approved;

• Any changes on the above shall be highlighted together with the

justification for it; and • Schedule of materials and fixtures to establish the required standard

shall be prepared.

c. Final design


3.2.2.5. Cost control

3.2.2.5.1. General

The success of a project design and implementation is not dependent only on the quality and accuracy of the Design and Construction standards, but is on its cost effectiveness and execution within the limit of a set budget.



To achieve this target, it is important to be aware of the budget constraint and extent of flexibility and control within the set limits. The control should be made from the inception through its implementation. This requirement calls for devising means of cost control of Projects through the multistage of design and execution of works.

3.2.2.5.2. Cost checking phases and Type of contract

In as much as designs are checked starting at Concept or Preliminary to Final designs, costing need to track these stages and be updated and refined in line with the design stages. The control of costs shall therefore, follow the design checking phases. Cost control during construction is to be done by a project management team. It is therefore, not dealt within this manual.

Various formats of Construction contracts are in practice globally. The most widely used format is the Classical (Unit price and measured works) contract, which is true as the practice for almost all Public works in Ethiopia as well. . The cost control proposal in the following sections shall, therefore deal only with this form of Contract. Deviation from this needs to be addressed under the individual contract to be entered.

3.2.2.5.3. Stages of cost control

The cost control of projects is to be done at the following work phases. These phases are after a project has been determined feasible and approved for design and documentation:

a. At completion of concept design, if the complexity o the project calls

for concept design. This is an approximate indicative cost with the margin of error not exceeding a variation of 20%.

b. At preliminary design (Whether costing at concept design is made or

not). The level of accuracy of this is expected to be within a margin of 15%.

c. At Final design (Variation expected to be within the limits of physical

and price contingencies). d. At Tender phase. This is the offer made by contractors tendering for

the work. The tender price variation is expected to be within 10% of the estimate if the estimate is well prepared and the bid submissions are sound.

e. During project implementation i.e. Construction.



It is to be noted that this manual deals only with project checking during design and tender phase. The cost control and checking methodology in here shall, therefore, be limited to this phase only. Cost control during implementation of projects is not dealt within here.

3.2.2.5.4. Required data and documents

In addition to the professional skill and experience of the analyst and controller, calculation of a near accurate cost depends on the following major factors:

• The clarity, quality, detailing and completeness of drawings and

specifications. The extent to which these are elaborated will determine the accuracy of Quantities and cost estimate;

• Design report elaborating environment, used materials, utilities,

occupancy and expected standards of works and finishing; • Production norms for labour and equipment and efficiency rating for

various geographic zones; and • The availability of price indices for construction materials and labour.

This indices need to be updated annually and should cover the following at the minimum:

a. Indicative costs of buildings by function and standards of finishing

materials. This needs to be subdivided into Single story, medium height and multi-story buildings for the major occupancy types;

b. The cost of construction materials used in all works. Such costs

should cover all taxes and levies both for local produce and import; c. Indicative annual inflation and expected material, labour and

construction cost increases; d. Variations in costs within the various geographical locations of the

country; e. All taxes and levies to be imposed on construction works; and f. Ranges of reasonable overhead and profit margins to be allowed

for construction works.



• The approximate implementation schedule of the project and expected cash flow from start to completion of works

The incompleteness of the above data would make cost estimating and control in-accurate and subjective. Formulating a project and setting up a project team to study the above to be followed by an office to continuously update the information is necessary. If this is achieved, Costing would have uniform basis which would make it easier for outsourcing. The end result would b very close irrespective of who does it or checks it as there is a common denominator.

3.2.2.5.5. Types of Cost Estimates

The method of cost estimating will depend on the stage of design and intended purpose of the estimate. The following is an indication of the expected types of cost estimates for the various phases of the design:

(i). Indicative Costs

This is an estimate to be prepared and submitted together with the concept design. Its purpose is to establish indicative costs both for the purpose of budget updating and determine the Employer’s capacity to build. This estimate shall be based on the estimated area of the building and proportional or estimated external works. Data obtained from previous similar works and price indices shall be used to estimate the cost at prevailing rates. This estimate shall be indexed for duration which shall cover the design, tender and construction phases. The estimate shall include payables for utilities. The cost controller shall check if the estimate is made using the above guide line and correct data.

The estimator shall present the following together with his estimate.

a) The approved concept design; and

b) A cost report which would include:

• the assumptions made for duration • the reference of indices used for costing • Source of previous costs if used to determine the estimate • the basis for either estimating or proportioning utilities.

The estimator and controller need to agree on the cost being reasonable before the project moves to the next stage of design.



(ii). Provisional Cost Estimate a) Breakdown

This is an estimate to be prepared at completion of preliminary design. The estimate is expected to be more accurate and reliable compared to the indicative cost at concept design phase. This estimate shall include:

• the Cost of the building itemized into structural, architectural,

electrical and plumbing and mechanical components. Special consideration shall be given for unique structures, specialized finishes, Ventilation and air-conditioning, security and communication installations, other mechanical and specialized installations and luminaries;

• the cost of external works including paved and green area

development, provision of utilities and connection fees;

• projected increase of costs i.e. physical and price contingencies during the life of the project;

• other incidental costs that may be attributable to the design or construction period of the project; and

• projected cash flow to support the estimate of physical and price

contingencies allowed for the project.

The estimator shall use data from previous completed works or the data mentioned in section 6.3.2.5.4 of this document to make the estimate. Adjustments shall be made for variations in conditions that are not covered by the above basis.

b. Methods of Estimating

The estimator shall use one of the following alternative methods as applicable to the project:

b1. The area or volume method:

• calculate the Area or Volume of the building and classify into

standards of finish if different for each floor or part of a complex. Buildings with special structures shall also be calculated separately;



• determine special considerations like security, sound system, public address system, vertical and horizontal travels within building, etc.;

• estimate the expected foundation type from preliminary site and

soil investigation. This need not be done if the structure is simple and conventional;

• calculate the approximate area of external paving and green area

development; • calculate the length of fencing, retaining walls, etc as applicable to

the site; • calculate the approximate power load and determine whether

transformer and stand-by generator are required and identify the possible tapping point of power;

• determine whether waste water is to be treated using treatment

plant, septic tank or municipal connection; and • determine the source of potable water and the distance to the

connection.

The following cost shall be calculated using the above data: • Apply unit rates to the different areas or volumes to arrive at the

basic cost and add the following variables: o the cost of specialized installations like elevators, escalators,

moving ramps, vacuum system, sound system, security, etc.; o the cost of paving based on unit rates for the type of paving to

be used and including curbs; o the cost of fencing calculated on area or length basis and type

of fence; o the additional cost of foundation if different from conventional

cost included in basic rates; o the additional cost of electrical installations, generator

provision, ventilation and air conditioning if not included in basic rates;

o the additional cost of water storage, hot water service,

pumping, etc if not included in basic rates; and



o the cost that the Employer would pay to the service providers

for connections of all services that are not to be covered under the contractor’s contract, i.e. power connection, transformer, potable water, waste water, etc.

b2. The Approximate Quantity Method:

This is an alternative system where the Area or volume of the building is replaced by approximate Quantities of major works. This is preferred for complex projects as the design to be submitted at preliminary phase will have to incorporate the proposed structural and all installations to be incorporated in the works. This includes all external installations as well. The estimate obtained for the major items of work shall be supplemented by the addition to this cost, the area base cost of minor items which may be extracted from previous jobs depending on area or volume of buildings. Strong data base of previously completed projects broken down into work sections is required to use this format.

b3.Contingencies

The contingencies which shall cover the physical and price components shall be calculated based on known annual cost change data for the price contingency and uncertainty of level of design and provisional cost estimating. The breakdown of price contingencies shall be supported by an implementation schedule and estimated cash low of the project from preliminary design to completion of construction.

c. Submittal Requirement

The estimator shall submit the following together with the cost estimate: • the approved design document and report as required under the

preliminary design submission; • the Design report shall, in the costing section include the following

at the minimum:

o the alternative method selected for estimating the cost;



o the data source and reference or copy of data to support the estimate;

o the calculations of areas, volumes, quantities for the works and

the applied rates and results; and o the basis and justifications for calculating contingencies.

The estimator and controller need to agree on the cost being reasonable before the project moves to the next stage of design.

(iii). Final Cost Estimate

a) Estimate Preparation

This is the detailed estimate to be prepared on the basis of the final and approved design document and specifications of works. The document is expected to be as accurate as possible as this is the true value of the works subject to variation as a result of bidding or negotiation with the prospective contractor. The approach is: • the estimate is to be prepared from accurate quantities of works

drawn out from information obtained in the drawings and specifications; an accepted and approved measurement method shall be use to prepare the theoretical quantities;

• unit rates of works at prevailing market rates shall be applied to

the quantities to arrive at the rates; • where the designer has not opted for a firm specification of

works, or selection at a later date would make the choice more competitive and yield better results, then, such item may be indicated as Provisional Sum items, the estimated cost of which shall be set as a lump sum obtained from sources as reliable as possible. The cost payable to the contractor for such works shall, in any case, be estimated based on the quantification of the items as set in the methods of measurement. Provisional costs shall, whenever possible be supported by indicative quotations from suppliers or price lists from manufacturers.

• price and physical contingencies will be prepared as percentages

of the basic cost but shall be supported by implementation schedule and cash flow to justify the values; and



• the cost payable to service providers for utilities shall be shown as separate estimates including their price and physical contingencies. These shall, wherever possible, be supported by actual quotations.

b) Submittal Requirement

The estimator shall submit the following together with the final cost estimate:

• the approved design document and report as required under

final design submission; • he specifications and method of measurements or reference to

the used standard method , if approved standards are used; • the source of applied unit rates or breakdown used to arrives at

unit rates; • quotations or price list for provisional sums and utilities to be

provided by others; • take off sheets (manual or printout) if applicable; and • master implementation schedule and cash flow and calculation

of contingencies. No calculations or cost variation contingencies are required for projects with combined tender and implementation phases not exceeding 24 months.

It is to be noted that the designer will not be required to submit take-off sheets if computer aided design is used and Quantities can be calculated direct on the software without manual operation. The estimator and controller need to agree on the cost being reasonable before the project moves to the Tender stage.

(iv). Tender Prices Tender evaluation and review shall be done in strict conformity with the evaluation methods and criteria set out in the tender document.

3.2.2.5.6. Duties and responsibilities of the Estimator and Checker

a. The estimator is responsible for submitting all the documents and

references (where these references are in common use );



b. The controller (checker) shall review all documents for compliance with the above submission requirements;

c. If satisfied, the details of quantities and costing shall be checked; d. Quantities and costing shall be checked in full or at random depending

on the agreement for review; e. The estimator shall check the document in accordance with the above

sections only. Discretion shall be used only if the provisions of this manual do not apply to a particular item or section of the project; and

f. If agreement can not be reached between the estimator and controller

on the estimated cost of works or a part thereof, the final decision shall be in accordance with the Guideline to be issued by the Ministry to resolve differences.

3.2.2.6. Standard of drawings and documents

3.2.2.6.1. Introduction

The current practice is to submit drawings and other accompanying document in any format suitable for the office that makes the submission.The standardization of presentation and paper formats make project checking relatively easier if a common system is used by the designers and reviewers. ISO standards have been issued for the preparation of Technical drawings and documents. These standards cover extensive area in technical drawing and document preparation for all disciplines. The brief extract hereunder deals with highlight points that need to have standard formats for ease of checking. The items covered are elaborated in the following sub-sections

3.2.2.6.2. Paper sizes and Utilization

a. Paper size The paper sizes to be used for drawings and document printing and

reproduction are the ISO metric ranges, ie A-0, A-1, A-2, A-3 and A-4. Oversized sheets may be used when it is desirable to provide binding or trimming margins. The following are the dimensions of oversize sheets.

Designation Dimensions RA-0 860 X 1220 mm RA-1 610 X 860 mm RA-2 430 X 610 mm Oversized sheets are not recommended for A3 and A4 designation.



b. Utilization

Drawings shall normally be produced on A-0, A-1, A-2 and A-3 sizes. Special details of any project and drawings for small projects that can be bound into booklets may be produced in A-4 format. This size may be useful for engineering drawings in particular, where standard details and codes may be bound in one volume as references instead of repeated drawing. Where only limited drawings in a project extend beyond, one or two selected standard sizes, the paper size may be extended by modules of 190 mm along the length of the drawings. All documents other than drawings shall be produced in A-4 portrait or landscape format. Where it is difficult to contain the texts in A-4 format without compromising font, A-3 size shall be used.

c. Framing

Drawings shall generally have edge frames. There will be the inner and outer frames located as follows. The measurement is from the edge of the sheet.

Sheet by type Measurement in millimetres Left Right Top Bottom Regular 20 10 5 5 Oversize 20 10 75 75

The inner frame shall be off-set 50 mm for the outer frame. Framing for A-3 and A-4 is optional except the left edge outer line when the papers are used for drawings.

Drawing sheets may be divided up into grids, which grids shall be in letters and numbers placed within the inner and outer frames. Sizes bigger the A-4 shall have folding margins indicated in heavy line within the inner and outer frames. The line shall not be less than the 0.5 mm thick.

3.2.2.6.3. Title Blocks

Title Blocks shall be placed at the bottom right corner of the paper frame so that the information is visible when any drawing is folded and bound into A-4 size. The title block shall contain the following minimum information: • the name, logo, and full address including telephone, fax, e-mail etc of

the design firm • the name of the project owner



• the reference of the project • the title of the drawing • the drawing reference number • the initials and registration numbers of the designer, developer and

drawer • the true scale and the plot scale • the date of the drawings • Revision column with date, revision number and description. Revision

shall be entered from bottom in an upward direction • Column for entering comments, notes, references, etc. • other information as required under each project • colour and pen assignments • Notes on unit of measurement A drawing sheet with a sample title block is enclosed in the following

page.

3.2.2.6.4. Drawing pen assignments a. Pen selection

It is recommended that pen assignments follow the ISO Standard for simplicity of manual editing of drawings after reduced or enlarged sizes are printed. The formula that ISO uses to determine line thickness is the function of √2. The proposed sizes are 0.1, 0.13. 0.18, 0.25, 0.35, 0.50, 0.70 and 1.0.

As an example a line drawn using 0.50 mm on A-1 will be reduced to 0.35 in A-2 and 0.25 in A-3 sizes.

b. Notes on drawing

The colour selection and the pen assignments shall be entered in the note section of the title block. This needs to be in place to make reference easier if electronic version is used to review the drawings

3.2.2.6.5. Dimensioning

The system of measurement shall be in metric. The following conventions shall be used: • Linear, radial and circumferential dimensions shall be in millimetres • Elevations shall be in meters with plus or minus sign in front to indicate

position in relation to reference. Elevations shall be placed to two decimals accuracy. The elevation reading shall be preceded by a “0” if less than one.

• Radial dimensions shall have the letter “R” preceding the dimension.



• Angular dimensions shall be in decimal degrees with accuracy of not less than two decimal points.

• Dimensions shall, to the extent possible be written aligned with the dimension line and readable from the bottom-up or left to right.

• Dimensions that are not to scale shall be underlined. • If a dimension line can not be completely drawn to its normal termination

point, the free end shall be terminated with double arrow heads. • The units of measurement used in the works like “All dimensions are in

mm, angles are in decimal degrees, elevation are in meters, etc.” shall be entered in the notes section of the title block.

3.2.2.6.6. Binding and Presentation

a. Binding The following binding format shall be followed for submission of drawings and other documents for checking:

a1. Drawings for each discipline shall be bound in separate volumes. Each

copy shall be bound separate as well. a2. The following binding standards shall be used:

• All drawings with sizes of A-2 and above shall be folded into A-4 size and placed in a box (ring) file. The binding edges of the drawing shall be protected with a hard (plastic) protection at the punch zone.

• A-3 size drawings may either be handled as above or bound using comb binder.

• All A-4 size documents including drawings shall be bound using comb binder. The documents shall be protected with hard or plastic cover.

• Design reports and calculations shall be bound together but separate for each discipline.

• Specifications, tender documents, pricing documents, etc shall each be bound separate.

b. Information

b1. Covers to documents shall have the following information at the

minimum: • The reference of the project • The name of the employer • The reference of documents contained in the volume • The volume number if more than one • The full address of the designers • The date of preparation • Revision numbers and dates if it is a second or more submission



• Intended purpose of submission

b2. Table of contents • Each document other than drawings shall have a table of contents

behind the cover. Each table of contents shall have the sub-headings and page number

• The table of contents for drawings shall be the first page of the bound document and contain the following at the minimum: o Reference to discipline o Title of Drawing (discipline) o Used scales o Date of production and last revision number and date

c. Submittals and distribution

The following submittals are to be made. Submittals shall always refer to the number of copies required for approval. Revised pages of submittals shall be considered as replacements and not additional submittals. The checker, employer and the Ministry shall each keep only checked and approved copies.

The minimum required submittals are the following: • Preliminary designs and documents – 4 copies • Draft final design and documents – 2 copies • Final design and documents – 4 copies • The approved copies shall be distributed as follows

o One copy each to the Ministry and employer o One copy to the designer o One copy to be retained by the checker

All copies other than the above including copies submitted for municipal approval, shall be reimbursed at cost.

3.2.2.7. Bidding and Contract Documents

a. Bid Documents:

The set of bidding documents for the purpose of bidding shall be in accordance with the guidelines issued from time to time by the Ministry and shall include the following:

• Invitation to Bid;. • Standard Instructions and Information to Bidders;



- It provides information and instructions for bidders to prepare responsive bids in accordance with the requirements of the Employer.

• Particular Project Instructions & Information of the Standard

Instructions and Information to Bidders; The Particular Instructions and Information to Bidders are to be read in conjunction with the Standard Instructions and Information to Bidders and shall form an integral part of the Standard Instructions and Information to Bidders. The Clause numbers in the Particular Project Instructions and Information shall remain the same as the Clause numbers in the Standard Instructions and Information to Bidders excepting additional Clauses to these Particular Project Instructions and Information which may be entered as additional Instructions or Information for the Particular Project.

In the events of any discrepancies between the Particular Instructions and Information to Bidders and the Standard Instructions and Information to Bidders, the Particular Instructions & Information to Bidders shall prevail.

• General Conditions of Contract (conditions of contract, Part I);

a. Provides matters governing performance of the contract or matters affecting risks, rights, and obligations of the contracting parties.

b. The latest version of the General Conditions of Contract published

by the MOI shall be used. • Special conditions of contract (conditions of contract, Part II);

The Special Conditions of Contract are to be read in conjunction with the General Conditions of Contract and shall form an integral part of the General Conditions of Contract. The Clause numbers in the Special Conditions of Contract shall remain the same as the Clause numbers in the General Conditions of Contract excepting additional Clauses to these Special Conditions of Contract which may be entered as additional Conditions for the Particular Project. In the events of any discrepancies between the Special Conditions of Contract and the General Conditions of Contract, the Special Conditions of Contract shall prevail.



• Technical specifications and Methods of Measurement; a. This is the Engineering requirements in executing works. b. The latest version of the Technical specifications and Methods of

Measurement published by the MOI shall be used.

• Formats − Form of Bid and appendix thereto;

− Form of Bid Security;

− Form of Bank Guarantee for Mobilization Advance Payment;

− Form of Contract Agreement and appendix thereto;

− Formats for Day work Schedule (for labour, equipment and Basic

material);

− Formats for Schedules (work, labour, equipment, material cash flow);

• Preambles, Specifications(Bill descriptions) and Bill of Quantities ;

Specification

o Scope of the works: Detailed description of the nature and quality of the materials. Workmanship to be complied within the execution of the works. General information on the project.

- the facilities to be provided at site for the engineer and other

contractors,

- information as to the availability or otherwise of electricity, water and other services required for the execution of the works,

- the means of access to the site,

- any other special responsibilities the Contractor has to bear which are not specially included in the conditions of contract,

- the specification should be read in conjunction with the drawings and

the bill of quantities. The contractor should have all the information that he needs for the execution of the work,



- it should not include matter that should rightly by stipulated in the

instruction to Tenders, Conditions of Contract, method of Measurement or the preamble to the Bill of Quantities.

o The principal sources of information which are commonly used for drafting

a specification are:

- previous specifications (adopted for past jobs of a similar type),

- site investigation and surveys; soil conditions, site clearance, restrictions on site, water levels, etc.

- employer's requirements,

- standard specification (applicable presently),

- trade catalogues,

- where articles of proprietary manufacture are envisaged to be used on the works, the name of the particular manufacturer is specified.

- it is often necessary to quote the manufacturer's catalogue reference

number when an article is produced to many different patterns so that the contractor will be in a position to propose a similar article to that named in the specification and incorporate such article in the works, provided the engineer approves the change.

Schedule of Basic Prices (can be included in the Bill of Quantities)

o This is normally included between the preamble and the bill in a contract

document prepared for works of a civil engineering nature, although it is an optional requirement.

o It contains spaces for the tender to fill in the basic rates for the labour,

materials and plant used in the preparation of his tender. o The schedule basically requires the make-up figures of the ingredients that

form the bulk of the rates quoted by the tenderer to be stated with ender. o Basic rates are accordingly asked for in respect of labour, plant and materials

such as aggregates, cement, reinforcement, timber, pipes, bricks, etc. as appropriate to the particular works for which the contract is framed.

o The schedule has three possible functions:



1. As a basis for the fixing of new schedule rates effected in the process of

rate fixing; 2. It may be used for the contract price variation covering increases or

decreases as the case may be in statutory or unavoidable changes in prices during the period of contract, (this only applies where a fixed price contract is not the case); and

3. Where no bill of quantities is used, the schedule of rates and prices may

be a list of different items to be performed for excavation, concrete and so on.

• Day Work Schedule (can be included in the Bill of Quantities) • Drawings. Contract Drawings are:

- the drawings on which the works are to be carried out and on

which the contract price is based; and - those referred to in the specifications and any modifications of

such drawings approved in writing by the engineer and such other drawings as may from time to time be furnished or approved in writing by the engineer.

The drawings should be categorized in each discipline as shown hereunder and in two copies:

− Architectural drawings; − Structural drawings; − Sanitary drawings; − Electrical drawings; and − Site work drawings.

b. Contract Documents:

The Contract Documents should include the following:

(a) the Construction Agreement and Appendices thereto;



(b) the Letter of Acceptance dated [ date and address]; (c) signed Form of Bid of the Contractor, Appendices and Annexes

thereof; (d) the Particular Conditions of Contract (to be inserted only if

applicable); (e) standard Conditions of Contract for Building Construction

Works; (f) signed and numbered Prints of Drawings; (g) signed Specifications(Bill descriptions), Priced Bill of Quantities

and/or other pricing document as applicable; (h) signed Technical Specifications and Methods of Measurement; (i) the Particular Project Information and Instructions;

(j) the Standard Instructions and Information to Bidders for Building

Construction Works; and (k) (any other documents required to form part of the Contract).



SECTION 2




SECTION 2


1.0. SYSTEM FOR SCREENING AND REGISTRATION

(CERTIFICATION) OF DESIGN CHECKERS

One major area of complaint has been the experience and capacity of design checking staff in the Ministry. Design checking in principle, requires skill and experience. The design checker must have acquired extensive experience in design works and if possible office running and Project Management. The design checkers(Architects and Engineers) for each discipline, shall be Practicing Professionals that are licensed to do business and not employed by registered consultants. Consulting offices are qualified for design checking. They can assign for the design checking works those Practicing Professionals they employ. All practicing professionals(those licensed to do business or employed with Consultants) involved in design checking are believed to have a working experience as practicing professional designers in their respective disciplines. Two or more consultants or consultants and Practicing Professionals that are licensed to do business can associate or form joint ventures to be registered with the Ministry as design checkers. In such instances, the lead consultant should be known and the association or joint venture documents shall be submitted to the ministry.

The Practicing professionals and Consultants should be registered with the Ministry to have a design checking certificate and are required to renew their registrations yearly by filling an application of renewal in accordance with guidelines for the registrations of professionals and consultants issued by the Ministry and the Qualification Requirements presented in Annex III of this document.

1.1. Rejection of Application The Ministry of Infrastructure shall reject an application for registration on any one of the following grounds:

If the applicant:

(a) has been adjudged by a court of competent jurisdiction to be of

unsound mind; or



(b) has been convicted by a court of competent jurisdiction, whether in Ethiopia or

elsewhere, of any offence involving fraud or dishonesty; or (c) is found unfit to satisfactorily carry on business by reason of his physical or

mental disability as may be certified by a competent physician; or (d) is found in deliberate malpractice [as defined in the Cod of professional Ethics by

the Ethiopian Consulting Engineers and Architects Association ( ECEAA) and Ethiopian Association of Civil Engineers(EACE)].

1.2. Suspension of Registration Certificate

A registration certificate may be suspended by the Ministry of Infrastructure if its holder:

(a) Fails to comply with the requirements set out in the procedure for design checking;

or (b) Shows misconduct of gross negligence in matters relating to his professional practice; or (c) Fails to submit reports and other relevant information as required by the Ministry;

or (d) Fails to abide by the Codes of professional Practice/Ethics of ECEAA and EACE

and/or the best standards of professional practice in the trade for design, supervision and contract administration of projects.

The period of suspension may vary depending on the degree of the malpractice. However, the suspension period should not be less than one year. Pursuant suspension, the Certificate shall be returned forthwith to the Ministry.

1.3. Cancellation or revocation of Certificate

Certificate of registration shall be cancelled or revoked, as the case may be, when:

(a) the registered person dies, or is incapacitated, or quit the business or fails to comply

with the requirements set out in these manual; (b) measures taken by the Government are incompatible with the Registration; and (c) a registered person or juridical person is adjudged bankrupt or dissolved in

accordance with the Commercial Code of Ethiopia.



2.0. ROLE OF THE MINISTRY IN OUTSOURCING DESIGN CHECKING

Design and document checking is basically the responsibility of the Ministry. In outsourcing the service, the Ministry is delegating its authority.

The Ministry shall have the following duties and responsibilities in the outsourcing processes.

2.1. Pre-design stage checking

2.1.1. Pre-design stage activities shall include, but not limited to feasibility study, selection

of suitable site, preparation of tentative cost estimate, project appraisal and selection of a Consulting Firm. Pre-design stage studies may also include making topography of the site and preliminary soil investigations. The Employer shall carry out pre-design stage activities essentially with guidance from MOI.

2.1.2.On completion of pre-design stage activities and submittal of all documents

necessary, the MOI will classify the project by category and process selection of a consulting firm in co-operation with the Employer.

2.1.3. The Municipal permits are outside of the Ministry’s responsibilities and the

Employer is responsible for such permits and approvals.

In consideration of the complexity of the project, the Employer’s preference and other pertinent factors, the MOI will decide on the procedure for selecting a consulting firm.

For internationally financed projects, the MOI will set up selection procedure in

collaboration with the Employer and the Financing Agency.

2.2. Continuation of small and medium projects checking. The Ministry should basically concentrate on controlling the policies adopted, setting directives and control mechanisms. However, provided that the Ministry has the necessary human resources, the checking of small and medium sized projects can be handled. If this is not feasible and desired, the services can be outsourced.

2.3.Receiving copies of letters of transmission of design drawings and documents to checkers from Employers

All documents shall be officially submitted by the Employer to the design checkers in accordance with the requirements of document submittal. The letters of submission shall be copied to the Ministry.



The Ministry requires that all projects be checked after completion of Preliminary and Final Designs.

2.4. The Ministry shall Classify the Projects

For the purpose of the preparation of the different stages, projects are classified as simple, Moderate and Complex. (The Definition of Categories is given in Annex I)

2.5. Mode of Design Document Submission 2.5.1. Preliminary Designs

The preliminary design, prepared in compliance to the MOI's evaluation checklist presented in section 3 of this document, shall be officially submitted by the Employer to the design checkers in three copies for checking and approval. After approval, one each shall be distributed to the Employer and the Ministry. The third copy shall be retained by the design checker. Correction and re-submission of preliminary designs should not be required, unless it involves major changes, and should be approved with remarks in red ink. Projects submitted for the first time will be considered to be in the preliminary stage. The submissions for Complex Projects shall include Structural, Sanitary and Mechanical, Electrical, and any other specialized designs other than the architectural designs.

2.5.2. Final Designs

The Employer shall, officially submit the final design in three copies for checkers’ checking and approval. The final design document includes drawings, specifications, bill of quantities, Engineer's cost estimate and biding documents.

The submittal of final design document should be in one stage.

• Two sets of Architectural, Structural, Electrical and Sanitary drawings shall be

submitted for checking. After approval, all drawings shall be submitted in a minimum of three copies.

• Two copies of the draft bill of quantities and engineer's estimate together with

the take-off sheets, shall be submitted, together with drawings, for initial checking. Detail checking of quantities could continue after approval of



drawings. After approval, the bill of quantities and engineer's estimate shall be submitted in a minimum of three copies.

2.6.Taking over of the reports, preliminary and final designs and

documents from the checkers The Employers transmit their designs and documents to the registered design checkers for detail evaluation and checking in accordance with the checklist. The checking services shall be distributed to the prospective and registered design checkers based on their work load on their hands. The Employers can get information on the work load on hand of the design checkers from MOI. The MOI shall monitor the work load information of the checkers from the data obtained from correspondences of the employers when they transmit their designs to the checkers and from reports of the checkers. After the detail checking is completed by the checkers within the specified time indicated in the agreement, the checkers shall submit the checked designs and documents to the Employer copied to the Ministry.

2.7. Supervision and evaluation of the checkers’ activities. The Ministry, in the option of the Employer’s preference, shall use proper mechanism of control and supervision to ensure quality based efficient service by the design checkers. The supervision and evaluation can be undertaken by reports, correspondences, outputs of the checking and physical inventory. The service payment for the checking shall be in accordance with the service agreement concluded by and between the Employer and the checker.

2.8. Settlement of Disputes 2.8.1 Amicable Settlement

Any dispute or difference arising out of the agreement including those considered as such by only the Employer or Checker, or the Design Consultant and Design Checker in the first place be settled amicably. The parties shall use their best efforts to settle their disputes arising out of or in conjunction with this Agreement or the interpretation thereof amicably.

2.8.2 Dispute settlement by the Ministry

Any dispute or difference that can not be settled amicably shall be referred to and settled by the Ministry who shall within thirty (30) days from the date of its receipt of a written request by either the Employer or Design Checker or Design Consultant or Design Checker to do so, give written notice to his decision to the Employer and the Checker or the Design Consultant and Design Checker. Such



decision shall be binding upon and be given effect to by the Employer and the Checker.

3.0. THE DUTIES AND RESPONSIBILITIES OF THE EMPLOYERS The Employers have the following duties and responsibilities: 1. Obtain the list of design checkers and their workload status from the MOI; 2. Conclude the Checking agreement with the selected design checkers; 3. Submit the designs and documents to the checkers copied to the MOI; 4. Supervise and monitor the checking processes; 5. Resolve differences with the checkers amicably and if not resolved amicably, refer it

to the MOI; and 6. Effect payments to the checkers in accordance with the agreement.

4.0.THE RELATIONSHIP BETWEEN THE MINISTRY AND THE DESIGN CHECKER

The design and supervision office of the Ministry and the design checkers are closely related. The design checkers are exercising the role of the office as delegated authorities. To this end, they are required to have valid registration and are expected to renew their licenses annually. The Employer directly passes the designs to be checked to the checkers after concluding the service agreement. The design checkers are directly accountable to the Employer in undertaking their assignments of checking. Thus, they need to report directly and submit their findings of the checking to the Employer copied to the Ministry. The checkers are also expected to submit their payment requests for the services rendered to the office for approval and then to transfer same to the Employer for effecting the payment.

5.0. THE DUTIES AND RESPONSIBILITIES OF THE CHECKERS

The design checker will be responsible for checking the designs and related documents at different design stages of the project. The design checker shall perform the following tasks:



5.1 The professionals who think they have the required experience and skill need to pass through the screening method and should be registered with the Ministry of Infrastructure for the service;

5.2. They should sign the agreement with the Employer prepared for the services(Refer to

Annex IV); 5.3. They should screen the designs whether or not they are in a substantially acceptable

stage before they proceed with further checking. If the designs are not substantially completed and are not in a checking stage, the design checker shall return them to the Employer and the Employer shall cause the design consultant to complete the designs.

5.4. They should handle the checking of designs with the highest ethical and professional

standards, free from subjective evaluation, prejudice or bias in professional advice rendered in the checking processes and strictly in accordance with the design checklist for each discipline presented in section 3 of this document;

5.5. They should not be involved in the designs of the projects they are checking. To this

effect, they should sign the Letter of Confirmation presented in Annex II of this document for each checking service and the signed Letter of Confirmation shall be annexed to the agreement. If the checker is found involved in the design of the project he is checking, this will be considered as malpractice and the Registration Certificate shall be suspended or cancelled in accordance with sub-clauses of 1.2 and 1.3 in section 2 of this document;

5.6. During the checking processes, if the comments are many and major, the checker

shall submit his comments to the Employer to be transmitted to the Design Consultant to rectify the comments and re submit the designs for re checking. The time wasted for rectifying the comments shall be counted to the Design Consultant. The net time used by the Design Checker for checking and report preparation shall be Considered as completion time for checking.

5.7. They should submit their reports and outputs of the checking to the Employer copied

to the Ministry within the pre-set time schedule indicated in the service agreement; 5.8. They should put the firm’s stamp for each discipline on the drawings checked by

them, sign and put their professional registration number on the drawings; and 5.9. They should submit professional indemnity insurance guarantee for the checking

services in accordance with the guidelines of the MOI.

The design checker is liable to the design under consideration. The liability is related and limited to the design checking service fee.



6.0. THE RELATIONSHIP BETWEEN THE EMPLOYER, DESIGN

CONSULTANT AND DESIGN CHECKER

The Employer and the design consultant have a direct contact and relationship since the design consultant is employed by the Employer and the consultant is a faithful advisor to the Employer. The Employer and the design checker have also a direct contact and relationship since the design checker is employed by the Employer. The design checker and the design consultant do not have a direct contact and relationship to each other. Their contact is through the Employer. However, incase the design checker needs information and clarifications from the design consultant, the contact and relationship can be direct.

7.0. FEE AND PAYMENT MODALITIES FOR THE DESIGN CHECKERS

7.1. Determination of Staff Month:

The remuneration for the design checking should be given due consideration to be compatible with the service. The service fee is directly proportional to the staff-month load considered by each discipline at design stage.

The staff month load for design checking is obviously less than the staff-month load for design. The staff-month load for design checking of each discipline is reasonably estimated to be 30% of the staff- month load considered to design the same discipline.

The staff-month load for each discipline shall be taken from design consultant’s proposal submitted at the tender time or from the Design Consultancy Service Agreement.

Weights of checkers' Activities in percentage including the main Consulting Firm's Administrative Cost and by disciplines for simple, moderate and complex building types for each of the three categories(Annex I ) are shown in the following tables.



INDICATIVE PRECENTAGE FEE DISTRIBUITON OF CHECKING SERVICES

BY DISCIPLINES FOR

GROUP 1 AND 2 BUILDINGS SIMPLICITY /COMPLEXITY

DISCIPLINE

SIMPLE PROJECTS MODERATE PROJECTS

COMPLEX PROJECTS

Breakdowns of fee (%)



Preliminary Final Total Preliminary Final Total Preliminary Final Total

ARCHITECTURAL 45 43 40 - Concept design, Inception Report

& Preliminary design stage

22.5

21

18

- Final design stage 22.5 22 22 STRUCTURAL 25 25 24

- Concept design, Inception Report & Preliminary design stage

3

3.5

3.5

- Final design stage 22 21.5 20.5 ELECTRICAL 11 12 14


1.5

2

3.5

- Final design stage 9.5 10 10.5 SANITARY & MECHANICAL 11 12 14


1.5

2

3.5

- Final design stage 9.5 10 10.5 SPEC. & BOQ 5 5 5


1.5

1.5

1.5

- Final design stage 3.5 3.5 3.5 BIDDING DOCUMENTS 3 3 3


-

-

-

- Final design stage 3 3 3 TOTAL 30 70 100 30 70 100 30 70 100

N.B. The percentage indicated is based on 30% at preliminary design stage & 70% at final design stage.



INDICATIVE PRECENTAGE FEE DISTRIBUITON OF CHECKING SERVICES BY DISCIPLINES

FOR GROUP 3 BUILDINGS

SIMPLICITY /COMPLEXITY

DISCIPLINE

SIMPLE PROJECTS MODERATE PROJECTS

COMPLEX PROJECTS




Preliminary Final Total Preliminary Final Total Preliminary Final Total

ARCHITECTURAL 35 35 34 - Concept design, Inception Report

& Preliminary design stage

17

17

16

- Final design stage 18 18 18 STRUCTURAL 27 27 26


4.5

4.5

4.5

- Final design stage 22.5 22.5 21.5 ELECTRICAL 15 15 16


3.5

3.5

4

- Final design stage 11.5 11.5 12 SANITARY & MECHANICAL 15 15 16


3.5

3.5

4

- Final design stage 11.5 11.5 12 SPEC. & BOQ 5 5 5


1.5

1.5

1.5

- Final design stage 3.5 3.5 3.5 BIDDING DOCUMENTS 3 3 3


-

-

-

- Final design stage 3 3 3 TOTAL 30 70 100 30 70 100 30 70 100N.B. The percentage indicated is based on 30% at preliminary design stage & 70% at final design stage.



7.2 Determination of Checking Fee:

Once the minimum staff-month is established as discussed in 7.1 above, the next step is assigning of the corresponding realistic staff month rate. To this end, the staff month rate to be agreed upon by the Ministry and the Ethiopian Consulting Engineers and Architects Association( ECEAA) shall be taken or it shall be decided by competition in the free market system.

7.3 Payment modalities:

The design checker’s activities shall be weighed at different design stages for each discipline in the following manners.

7.3.1 Weight of checking activities by design stages

7.3.1.1. Checking of Conceptual & Preliminary Designs with Reports………… 30%

7.3.1.2. Checking of Final Designs, Reports, Specifications and Bill of Quantities & Bid Documents ...…………………………………..70%

7.3.2 The design checker’s activities by disciplines

The design checker’s activities with respect to checking tasks are categorized herein below.

7.3.2.1. Architectural design checking:

7.3.2.1.1. Checking of Conceptual and Preliminary Designs and Reports; and 7.3.2.1.2. Checking of Final Designs and Reports.

7.3.2.2. Checking of Structural Designs and reports; 7.3.2.3. Checking of Electrical Designs and reports; 7.3.2.4. Checking of Sanitary, plumbing and Mechanical Designs and reports; 7.3.2.5. Checking of Specifications (bill descriptions) and priced Bill of quantities;

and

7.3.2.6. Checking of Bidding and contract Documents.



SECTION 3

CHECK-LISTS



SECTION 3

CHECK-LISTS

INTRODUCTORY REMARKS ON CHECK-LIST

Check-lists, by their nature, are summaries and are useful only as reminders of activities and neither explain the justification for that activity nor its significance as part of a total process. For all these reasons, a check-list can be initiating in their superficiality or their arbitrary divisions that they make between activities that are subject to much detail and those that are treated very briefly. In compiling this check-list therefore, we have been guided by several considerations in Architectural, Structural, Electrical, Sanitary(Mechanical) designs, and preparation of Specifications (Bill Descriptions) and priced Bill of Quantities (Price Control). The following pertinent points should also be noted:

1. Check-lists should act as a reminder that alternative method do exist, and that whatever our normal procedures may be there can be merit in looking at alternatives.

2. When professional practice is well established e.g. in preparing working drawings

and tender documents for an agreed project, an acceptable standard and presentation are always expected from any design office.

3. It is impossible to present a check-list as a sequential activity because it is, in fact,

a reiterature process. In other words, the project has to be checked in the preliminary stage before any detail can be finished, and even after “finalization” of details, they must once-more be checked in the final stage to ensure that they are compatible.

4. Much detail has been included that will be irrelevant in many projects, and it

should not be assumed that inclusion of an item implies that it is considered an essential component. For example, models and perspective drawings are required for complex projects, but simple projects are highly successful without either.

5. One of the main element of selectivity in compiling the check-list has been to

center it around the physical elements of such projects: attempts has been made to deal with design programs, and cost estimates are referred to principally to check on the physical and financial implication and other aspects of the project.

This revised check-list is, therefore, prepared as a guide-line for Design Consultants in order to ensure a uniform system for design of projects and consequently to facilitate a smooth checking procedure for the design checking body and, as a result, ensure a safe and durable construction.



CHECK-LIST FOR ARCHITECTURAL DESIGN CHECKING



CHECK-LIST FOR ARCHITECTURAL DESIGN CHECKING

1.0. GENERAL REQUIREMENTS

1.1 Pre-design Data and Information

1.1.1 Complete design program shall be submitted. The designated spaces and their corresponding areas shall comply with appropriate space standards.

1.1.2 A budget allocated for design and construction, comparable with the design program, shall be declared.

1.1.3 Complete site information shall be provided regarding title deed, topography ( surveyed map), micro- climate and existing infrastructure.

1.1.4 Planning information regarding zoning, building density, height, setback ,etc. shall be provided.

1.1.5 All the above and other relevant data shall be compiled and included in the design report.

1.2 Design Solution

1.2.1 The design shall, at all stages ( scheme, preliminary, final ), reasonably conform with:

- the given design program, - the allocated budget , and , - applicable planning and building regulations ( national and international).

1.2.2 Considering the nature of the projects which shall be categorized from complex to

simple, corresponding design stages shall be considered from scheme to final. 1.2.3 The requirements in the checklist generally apply for scheme, preliminary and

final designs, except that detail requirements may not apply for scheme design. 1.2.4 Each preceding design stage, approved with comments, shall develop into the

next stage, with the comments fully considered. 1.2.5 Where the comments by the checker are found to be subjective, discussion and

consensus with the designer would be necessary before the comments are transmitted in writing.

1.3. Application of the Checklist.

1.3.1 Detail requirements in the checklist are provided with corresponding check-boxes. 1.3.2 Requirements, which are reasonably complied with in the design shall be

mastered with a “ ” mark in the checkbox. 1.3.3 Requirements which are not reasonably complied with in the design shall be

marked with an “x” mark in the checkbox. 1.3.4 Where requirements are partly not applicable in the design, the checkboxes shall

be left open or unmarked.



1.3.5 Comments shall be provided only for those requirements not complied with and marked with an “x” mark in the checkbox.

2.0. THE CHECKLIST

2.1 Pre-design Data and Information

2.1.1 Completeness of design program:

- main spaces

- auxiliary spaces ( circulation ,etc)

2.1.2. appropriateness of space standards used

2.1.3. Comparative allocation of budget

2.1.4 Site information:

- title deed

- topography ( surveyed map)

- micro- climatic data

2.1.5. planning information :

- zoning

- building density, height, setback, etc.

2.1.6 existing infrastructure

2.2. Design Solution 2.2.1 Site Solution

2.2.1.1. plot use- open / built proportion and disposition

2.2.1.2. Building shape, orientation, height , setback

2.2.1.3 Traffic arrangement – ingress and egress

2.2.2.4 Parking provision

2.2.1.5 Provision and location of utilities

2.2.1.6 Landscaping

2.2.1.7 Climatic design consideration in building form and orientation



2.2.2 Function

2.2.2.1 Organization of functions or space adjacency relationships:

- mandatory

- desirable

- non-desirable

2.2.2.2. Optimum spatial layout for:

- main spaces

- auxiliary spaces ( wet rooms, utilities, etc.)

- circulation ( horizontal and vertical )

2.2.2.3. Space utilization in rooms:

- room geometry vs. desired accommodation layout

- number and distribution of doors

- number and distribution of windows.

- openness ( clearance from obstructions )

- Ceiling height

2.2.2.4 Circulation:

- porches, lobbies ,etc-size and location

- corridors –width and length

- staircases and lifts –size , number and spacing

- escalators.

2.2.2.5 wet rooms ( toilets, wash rooms, etc. )

- size, number and distribution

- positioning and alignment ( vertical )

2.2.2.6 utilities:

- technical rooms, janitors, etc.

- installation ducts, garbage chutes, etc.

2.2.2.7 safety, security and comfort standards :

- structural fire safety ( material and construction )

- means of escape in case of fire

- protected escape route and travel distance



- protected staircase shaft and spacing

- day lighting in rooms and circulation areas.

- natural ventilation in rooms, circulation areas and roofs.

2.2.2.8 Climatic design considerations:

- building shape, orientation and height

- openings and shading devices

- appropriate materials and construction

2.2.2.9. Sound insulation ( materials and construction ):

- air- bone sound

- impact sound

- acoustic treatment

2.2.2.10 Special design consideration for the disabled :

- circulation ( ramps) –width, slope, guardrails

- toilet room size and accessories ( rails)

- door opening sizes

- other space standards

2.2.3 Aesthetics

2.2.3.1 organization of design elements

2.2.3.2 volumetric composition

2.2.3.3 facade treatments

2.2.3.4 quality of interior spaces:

- room geometry

- daylight distribution

- materials and finishes.

2.2.3.5 quality of exterior spaces :

- porches courtyards, landscaping

2.2.3.6. selection of materials and construction type

2.2.3.7 environmental coherence or harmony with surrounding

2.2.3.8 symbolic representation.



2.2.4. Building Elements and Materials

2.2.4.1 Floors:

- sufficiently raised floor levels from ground

- resistance to weather and damp

- resistance to fire

- sound in insulation ( airborne and impact sound )

2.2.4.2 Walls:

- weather resistance ( external walls )

- fire resistance

- thermal and sound insulation

- protection from radiation ( x-rays)

- protection from hazardous materials

- protection from( chemicals, explosives, etc.)

2.2.4.3 Roofs :

- weather resistance –appropriate material and construction types

- fire resistance

- thermal insulation

- ventilation

2.2.4.3 stairs:

- flight width and length

- slope (riser/ tread proportion and sizes)

- landing and width

- headroom under stairs

- enclosure for fire escape stairs ( fire resisting walls and doors )

- materials and finishes

2.2.4.4 Ramps:

- width length and slope

- landing level and width

- surface treatment ( skid proof)

- guardrails



2.2.4.5 Lifts:

- building height requiring lift service

- size and grouping of lifts ( personal and goods).

- size and position of machine room

- depth of lift well

- lift lobby

- fire resistance for lift shafts and doors

- access to machine room

2.3 Design Presentation 2.3.1 Presentation format

2.3.1.1 Drawing in standard paper size- A series:

- general layout or location drawings in smaller scales:

- site plan

- floor plans ,elevations, sections

- roof plans

- reflected ceiling plans

- any others

- detail drawings:

- fragment drawings of the above

- plan and section details

- other details

2.3.1.2 Schedules ( textual or illustrated or both )

- doors and windows

- finishes

- built in furniture

- others

2.3.1.3 Design Report :

- compiled pre- design data

- design approach methodology and outcome

- materials and construction



2.3.2 Presentation Standard for scheme (S)*, preliminary (P) and final (F) designs

2.3.2.1 General notes :

- index of drawings

- legends to symbols, abbreviation ,etc

- other explanatory notes

2.3.2.2. Location maps ( S,P)

- road widths ( acc. to planning information)

- road name or adjacent plot identification

- boundaries of site with dimension ( acc. to title deed)

- reference distance from known landmark

- orientation

2.3.2.3 Site plans ( S,P,F)

- layout reference with clear dimensions ( S,P,F)

- distance between buildings or structures ( S,P,F)

- contour map with 50 cm or 1m. interval ( S,P,F)

- plot boundary line-distance and angle ( S,P,F)

- sections of site showing cuts and fills (F)

- finished floor levels of building (P,F)

- road and parking pavements ( S,P,F)

- orientation reference ( S,P,F)

- indication to existing buildings and other site features to

be maintained or demolished (S,P,F)

2.3.2.4 Floor plans (S,P,F):

- dimensions – external for modules and overall ( S,P,F)

- external for openings ,walls ,columns (F)

- internal for room modules (S,P,F)

- internal for rooms, openings, wall thickness (F)

- coordination with structural dimension (F)

_____________________________________________ * Scheme designs are recommended only for complex projects.



- down pipe and ground gutter (P,F)

- furniture layout ( P,F)

- door /window designations and opening directions (F)

- sanitary fixtures ( S,P,F)

- wall material graphics (F)

- labeling of rooms ( S,P,F)

- levels of floor and ground ( P,F)

- section lines ( S,P,F)

- grid lines and axial reference ( P, f)

- room finishes designation ( F)

- references to details and schedules (F)

2.3.2.5 Sections ( S.P.F)

- heights and height level marks of elements ( S,P,F)

- ceiling up to roofing material specification ( P,F)

- floor finish up to base material specification ( P,F)

- material graphics for walls and floors, etc. (F)

- c/c distance of purlins and battens (F)

- sanitary fixtures

- roof types and inclination (P,S)

- axial reference acc. to floor plans

- coordination with structural drawings

- reference to details

2.3.2.6 Elevations ( S,P,F)

- material graphics and labeling (F)

- door /window designation with hinge marks (F)

- gutters and down pipes (P,F)

- heights /levels as in sections (F)

- axial reference acc. to floor plans

2.3.2.7 Roof plans (F)

- roof slope configuration



- roof edge line with gutter and down pipe positions

- dimensions

- valleys and ridge lines

- slope directions

- positions of roof projections with walls in dotted lines

- shapes of finished surface ( coping ,flashing ,etc.)

- material specification

- reference to details

2.3.2.8. Reflected ceiling plans (F)

- finishing surface layout


- reference to material and fixing details

2.3.2.9 Staircases and details (F)

- full staircase plans and sections

- details of treads and risers with dimensions

- material finishes and fixing details

- handrails and balustrades with fixing details

2.3.2.10 Details (F)

- plan, section and elevation details shown in bigger scales

- fixing details


- dimensions

- reference to location drawings

- details of sanitary fixture layouts with

- dimensions and surface finish labels

2.3.2.11 Fixed interior decoration (F)

- plan, section and elevation details

- dimensions

- fixing details

- material specifications



- reference to location drawings

2.3.2.12 Door /window schedules (F)

- production dimensions shown in elevations

- section details for frames, glazing ,etc.

- fixing details

- material specifications

- designation and number of pieces

- opening conventions

2.3.2.13 Fixed built- in furniture (F)

- plan. section and elevation layouts

- location reference

- dimensional


- fixing details

2.3.2.14 Room finishes schedules (F)

- rooms and elements designation


- location references

2.3.2.15 Site works (F)

- plans sections ,elevations ,details, dimensions, materials specifications,

etc, for:

- fence

- gate

- earthworks (cuts and fills)

- retaining walls

- external steps, ramps

- pavements of all types

- gardens, lawns

- specific other features ( fountains, playgrounds , etc. )



2.4 Submittal Requirements 2.4.1 Scheme Design

2.4.1.1 Design report

2.4.1.2 sketch drawings:

scale

- location map 1:10 000, 1:5000

- site plan 1:1000,1:500

- floor plans 1:200, 1: 100

- elevations 1:200,1:100

- sections 1:200,1:100

- perspectives

2.4.2 Preliminary Design


2.4.2.2 Drawings

scale

- Topographic Survey 1:10000, 1:5000

- location map 1:10000, 1:5000

- site plan 1:1000,1:500

- site section/profile 1:200,1:100

- floor plans 1:200, 1:100

- elevations 1:200, 1:100

- sections 1:100, 1:50

- perspectives, models

2.4.3 Final Design


2.4.3.2 Drawings



scale

- site plan 1:500, 1:200

- floor plans 1:200, 1:100,1:50

- elevations 1:200, 1:100, 1:50

- sections 1:100, 1:50

- roof plans 1: 100, 1:50

- ceiling plans 1:100,1:50

- details 1:50, 1:20, 1:10

- door /window schedule 1:50, 1:20

- fixed built- in furniture 1:50, 1:20

- finishes schedule



CHECK-LIST FOR STRUCTURAL DESIGN CHECKING



CHECK-LIST FOR STRUCTURAL DESIGN CHECKING

1.0 GENERAL REQUIREMENTS

1.1 General information and all relevant data of structure General information and all relevant data of the structure to be checked shall be presented and registered by the Checker (Proof Engineer) including the followings but not limited to:

Project title, Employer, location, etc

Type of structure (Example: 10-storey office building, 5-storey hotel building, conference facility with partial mezzanine floor, warehouse, machine foundation, factory building, etc)

1.2 Structural material The type of structure shall be specified and recorded by the Checker in order to have a clear understanding on the application of code provisions. (Example: Reinforced concrete, steel structure, composite structure, masonry, etc)

1.3 Plan Configuration and structure height The Checker shall record the plan configuration and height of the structure subjected to checking. The plan configuration can be recorded as uniform, irregular, complex. The record can also be related to the structural frames. The structure height can be recorded in terms of number of stories for multi-story building and overall height for special structures like monuments, elevated water tanks, etc. Some structures with significant height may require additional design procedure such as dynamic analysis, stability analysis, and the records stated above can be used as basis for the design checking.

1.4 Utilized codes of practices Generally for all conventional structures, structural designer should use the relevant Ethiopian Standard Codes of Practices. However, some special structures may require codes of practices from other countries or a specialist literature. The designer should therefore specify the utilized codes of practices applied to the design and the Checker is to record same. In the event special structures are designed using some other codes, the calculation shall then state the minimum provisions of the codes for safety and serviceability. Copies of such codes or any other utilized specialist literature shall be attached to the statical calculations.

1.5 Material strength properties and applied loads The Checker shall record the basic material properties (Example: Concrete class, steel grade, applied design strength values, the applied loads – dead loads, live loads, earthquake load, wind load, any other relevant load).



1.6 Design method, structural system and load assumptions The Designer shall provide brief note on the design method used, structural system and load assumptions.

Example of design method or approach: – One-way slab, two-way slab, uniaxial frame, empty elevated water tank considered for stability analysis against wind load, etc.

Example of structural system: – Slab/beam system, flat slab system, ribbed slab system, composite structure, etc.

Example of load conditions and combinations: - Category of seismic action, wind magnitude, lateral load proportioning, load combinations, allowable bearing pressure for foundation design, any other relevant assumptions etc).

1.7 Utilized design program for analysis The Checker shall record all utilized design programs for analysis (Example: Structural anlaysis software for frame analysis, special program for dynamic analysis, other design programs or standard formats for the analysis of foundations, columns, retaining walls, shear walls etc).

1.8 Geotechnical investigation data The Checker shall take records of the Geotechnical Investigation Report and Foundation Recommendations made by Specialist Company for the specific project subjected to checking. He shall check whether the foundation design complies with the report and recommendations. Critical check shall be made as to the recommended foundation type, allowable bearing pressure for foundation design, foundation depth, other precautionary measures to be taken during construction, etc.

1.9 Completeness of design calculations A complete structural calculation shall be shown for all structural components (slabs, beams, columns, stairs, walls, foundations, roofs, retaining structures, any other special structures, etc). The calculation document shall also include data input and output with all the loading system for building frames, data input and output for structural detailing like for columns, footings, etc).

The calculations shall be presented in a convenient and readily checkable form. Sketches and proper labeling of the system with dimensions and loading shall be used to make the checking and identification of the structural element simple and quick.

1.10 Pre-cast reinforced concrete structures For buildings containing pre-cast reinforced concrete components, supplementary technical specifications of dependable source together with any certificate of official approval and test certificates shall be included in the design documents for checking.



2.0 DETAIL STRUCTURAL DESIGN CHECKLIST

2.1 Preamble to the detail structural design checklist

In addition to the general requirements given in Section 1 above, detail structural checking shall be conducted in accordance with the format stated below. Accordingly, if the design complies with the code provisions, the Checker (Proof Engineer) shall put a “right mark” in the box provided. Contrarily, if the design is found inadequate or unacceptable, the Checker shall then put an “x - mark” in the box provide. In such event, the Checker shall compile his summary of comments on those items found inadequate or unacceptable and shall communicate them to the designer for further rectifications. Some comments may be eliminated through clarifications by the designer.

2.2 Concrete Structure Design

2.2.1 Design assumptions

(a) Introduction on the scheme of structural calculation

(b) Establish the design criteria including live, dead load, seismic etc.

(c) Concrete grade used

(d) Steel grade used for reinforcement

(e) Concrete cover for slabs, beams, columns and foundation

(f) Establish design stresses including compression, tension, shear, etc.

2.2.2 One-way slab design

(a) Slab layout

(b) Minimum slab thickness

(c) Determination of effective depth of slab

(d) Loading on slab (dead and live loads)

(e) Design bending moments (maximum positive and negative values)

(f) Design shear forces (particularly for ribbed slabs)

(g) Determination of steel reinforcement

(h) Minimum slab reinforcement

(i) Maximum slab reinforcement

(j) Load transfer to beams



2.2.3 Two-way slab design

(a) Slab layout

(b) Minimum slab thickness

(c) Determination of effective depth of slab along the two directions

(d) Design bending moments (maximum positive and negative values)

(e) Support conditions and shear force coefficients

(f) Distribution of unbalanced support moments

(g) Determination of steel reinforcement

(h) Minimum slab reinforcement

(i) Maximum slab reinforcement

(j) Load transfer to beams

2.2.4 Flat slab design

(a) Slab layout

(b) Determination of effective depth of slab

(c) Minimum slab thickness

(d) Middle strip design bending moments (positive and negative values)

(e) Column strip design bending moments (positive and negative values)

(f) Determination of steel reinforcement

(g) Minimum slab reinforcement

(h) Punching shear

2.2.5 Frame analysis

(a) Frame layout

(b) Vertical loading on frame transferred from slab (dead and live)

(c) Horizontal loading on frame (seismic or wind)

- Frame type (braced or unbraced, etc)

- Soil type

- Period of vibration of the frame

- Base shear force

- Distribution of base shear force

(d) Determine design axial force



(e) Determine design bending moment

(f) Determine design shear force

2.2.6 Beam design

(a) Beam layout

(b) Determination of effective depth of beam

(c) Minimum beam depth

(e) Design bending moments (maximum positive and negative values)

(f) Determination of steel reinforcement

(g) Minimum beam reinforcement

(h) Maximum beam reinforcement

(i) Design shear forces

(j) Maximum stirrup spacing

(k) Determination of stirrup size and spacing

(l) Design torsion moments

(m) Determination of steel reinforcement

(n) Determination of stirrup size and spacing

2.2.7 Column design

(a) Column layout

(b) Minimum column dimension

(c) Slenderness ratio criteria

(d) Axial loading on column transferred from beams or flat slab

(e) Bending moment on column transferred from beams or flat slab

(f) Minimum eccentricity

(g) Interaction of design moment and axial force

(h) Determination of steel reinforcement

(i) Uniaxial/ biaxial conditions

(i) Minimum column reinforcement

(j) Maximum column reinforcement

(k) Lap length

(l) Maximum tie spacing



2.2.8 Foundation design

(a) Establish design bearing capacity for foundation and foundation depth

(b) Determine minimum foundation dimension

(c) Determine effective bearing pressures

(d) Determine final foundation dimensions

(e) Determine foundation thickness from punching shear

(f) Determine bending moment on foundation

(g) Determine steel reinforcement

(h) Minimum foundation reinforcement

(i) Maximum steel spacing

(j) Wide beam shear capacity

(k) Punching sheer capacity

2.2.9 Retaining wall design

(a) Accuracy of scheme dimensions and levels

(b) Unit weight for backfill material

(c) Angle of internal friction for backfill material

(d) Surcharge, if any, and its consideration

(e) Determination active earth pressure

(f) Determination of passive earth pressure

(g) Factor of safety for overturning

(h) Factor of safety for sliding

(i) Factor of safety for bearing pressure

(j) Detailing of retaining wall

2.3 Steel Structure Design



(b) Establish the design criteria including live, dead load, seismic etc.

(c) Steel grade and thicknesses used

(d) Bolt grade



2.3.2 Tension Members

(a) Effective area of tension members

(b) Cross-section Resistance

(c) Check lateral-torsional buckling

2.3.3 Compression Members subjected to axial load only

(a) Design axial load

(b) Buckling length

(c) Classification of cross section

(d) Non-dimensional slenderness ratio

(e) Appropriate buckling curve

(f) Design buckling resistance

2.3.4 Compression Members subjected to axial load and moment

(a) Design axial load and moment

(b) Effective length

(c) Classification of cross section

(d) Support condition

(e) Buckling resistance about minor axis

(f) Lateral-torsional buckling

(g) Interaction of combined action of moment about both axes

(h) Design buckling resistance of compression member with moment

(i) Resistance of web to transverse forces

2.3.5 Bending members (beams)

(a) Design bending moment and shear force

(b) Required plastic modulus

(c) Stability of flanges

(d) Class of cross-section

(e) Resistance to pure bending

(f) Resistance to shear

(g) Plastic shear resistance

(h) Shear buckling



(i) Resistance to combined bending and shear

(j) Check for deflection

(k) Lateral-torsional buckling of bending member

(l) Relative slenderness ratio

(m) Resistance of webs to transverse forces

(n) Web crushing

(o) Web crippling

(p) Web buckling

(q) Resistance of intermediate stiffeners

2.3.6 Bolted and riveted Connections

(a) Edge distances and spacing of holes

(b) Shear rupture resistance

(c) Effective area of bolts and rivets

(d) Shear capacity

(e) Bearing capacity

(f) Tension capacity

(g) Combined shear and tension

2.3.7 Pin connections

(a) Edge distances and spacing of holes

(b) Shear rupture resistance

(c) Effective area of bolts and rivets

(d) Shear capacity

(e) Bearing capacity

(f) Tension capacity

(g) Combined shear and tension

2.3.8 Welded Connections

(a) Design strength of fillet weld

(b) Design strength of butt weld

(c) Design strength of plug and slot welds



(d) Rotational stiffness of beam-to-column connections

(e) Column bases

(f) Anchor bolt design loads and capacity

2.4 Masonry Structure Design



(b) Establish the design criteria including live, dead and seismic loads etc.

(c) Masonry type used

(d) Establish path of resistance from point of load application to foundation

(e) Lateral force analysis for wind or seismic forces

(f) Detail of connections such as diaphragm connections to walls

2.4.2 Design of un-reinforced masonry

(a) Compression resistance of masonry wall

(b) Longitudinal bending capacity

(c) Concentrated bearing capacity

(d) Shear capacity

(e) Lateral bending capacity

2.4.3 Design of reinforced masonry

(a) Compression resistance of masonry wall

(b) Longitudinal bending capacity

(c) Main reinforcement

(d) Reinforcement detailing

(e) Concentrated bearing capacity

(f) Shear capacity

(i) Combined compression and bending

(j) Lateral bending capacity

(k) Slenderness ratio



2.4.4 Design for fire resistance

(a) Protection to reinforcement

(b) Fire resistance for integrity

(c) Fire resistance for insulation

2.5 Design of Special Structural Elements (a) Special structural elements such as elevated water tanks, underground reservoirs,

framed or solid monuments etc shall be designed according to the provisions of the Ethiopian Standard Codes of Practices where applicable and with reference to codes of other origins or specialist literatures where such provisions are not available.

(b) In the event of using codes of other sources or specialist literature, copies of such codes or the literatures need to be attached to the statical calculation document.

2.6 Structural Drawings for Concrete Structures

2.6.1 General requirements

List of drawings must be submitted stating the drawing numbers and corresponding drawing titles. The checking shall include:

(a) Correspondence of details to the results of statical calculations

(b) Completeness of dimensions and designations needed for checking the structural components

(c) Completeness of dimensions and designations for construction and with reference to other relevant drawings where necessary

(d) Appropriateness of scales used for the structural components

(e) Amendments to affected drawings due to alterations or modifications

(f) Essential notes on drawings specifying material strength (Example – concrete, steel grade etc), cover to reinforcements, notes to details, bar overlaps, foundation depths, earthworks, fills and compaction criteria, etc.

2.6.2 Foundation details

(a) Foundation plan showing the foundation layout including layout of columns, grade beams, shear walls, stairs, etc and with complete dimensions and designations

(b) Sections for foundations and all relevant details and reinforcements, complete with dimensions and levels and provision of lean concrete



2.6.3 Beams details

(a) Longitudinal section with reinforcements indicating beam location, dimensions and level

(b) Indicating diameter, length, shape and lap of re-bars for longitudinal section, size and spacing of stirrups and supplementary reinforcements where necessary (c) Sections along beams where necessary and all relevant details and reinforcements

complete with dimensions and details of stirrups

2.6.4 Columns and reinforced concrete walls

(a) Longitudinal section with reinforcements indicating column/wall location, dimensions and level

(c) Indicating diameter, length, shape and lap of re-bars for longitudinal section, size and spacing of stirrups (d) Sections along column/wall height where necessary and all relevant details and

reinforcements complete with dimensions and details of stirrups

2.6.5 Slabs and stairs

(a) Formwork plan complete with location, dimensions and levels

(b) Slab reinforcement plan, diameters and shape

(c) Details where necessary including for openings, parapets, etc

(d) Stair details and their reinforcements including for their supporting structural elements

2.6.6 Roof structures (Steel/ Timber)

(a) Roof layout with truss spacing, type and levels including bracings

(b) Purlin spacing and type

(c) Truss sections including dimensions of all members and positions of supports

(d) Connection details for the following cases including material used for connection:

- Purlin to roofing material

- Purlin to truss

- Truss to supporting structure (plates and anchor details)

- Between members of truss and between purlin members

(e) Written notes on welding practices for steel truss; and termite proof treatment for wood truss including any other notes necessary for construction details



2.6.7 Steel structures

(a) Written notes on the drawing specifying steel grad, bolt grade, weld type, etc.

(b) Longitudinal view of beams with sections, nomenclature or dimensions, stiffeners, connections, seats, etc.

(c) Longitudinal view of columns with sections, nomenclature or dimensions, stiffeners, connections, columns base, etc.

(d) Connections:

- Arrangement of bolts

- Size and type of welds

- Connection details for bolted connections

- Connection details for welded connections

(e) Bracings:

- Arrangement of vertical and horizontal bracings including bracing size

- Joint details of bracing

2.6.8 Pre-cast reinforced concrete components

(a) Specification for additional reinforcements to be installed on site

(b) Required compressive strength of concrete at the time of transport or erection

(c) Dead weights of individual pre-cast components

(d) Dimensional tolerance of the pre-cast components and of the substructure where necessary

(e) Method of slinging or support for transport and erection

(f) Completeness of erection drawings for pre-cast components for use on site

(g) Completeness of reference number of individual components and schedule of components.

(h) Bearing width required during assembly and requirements for propping of the pre-cast components

(f) Other precautionary measures to be taken while transporting and installing

2.6.9 Scales and drawing sizes (a) All drawings shall be made in standard sizes and their extensions. As much as possible, only sizes A0, A1, A2 or A3 should be used.

(b) Scales of 1: 50 or 1:100 (For large drawings) are to be used for foundation plans, slab plans, roof plans, columns beams longitudinal sections, trusses and the like

(c) Scales of 1: 20, 1:10 and 1:5 are to be used for sections and details



CHECK-LIST FOR SANITARY, PLUMBING AND MECHANICAL

DESIGN CHECKING



CHECK-LIST FOR SANITARY, PLUMBING AND MECHANICAL DESIGN CHECKING

1.0 GENERAL

The design of sanitary, plumbing and mechanical systems for a building project shall comply with the Ethiopian Building Code Standards EBCS-9 and EBCS-11, rules and regulations of Addis Ababa Water Supply and Sewerage Authority (AAWSA) and other relevant and accepted international Codes, standards and regulations. All plumbing and Mechanical works related to buildings are universally called as “Mechanical” and are categorized in Division 15 in the Specifications. However, it is recommended to maintain the locally accepted naming of “Sanitary and Mechanical” in this manual. The design consultant shall follow the existing procedures of the Ministry of Infrastructure's (MoIS's) presentation of documents. That means he shall submit design reports together with calculations in compliance with the requirements outlined in EBCS-9 and EBCS-11 or other relevant codes, standards and regulations: complete sets of drawings, specifications and bill of quantities and technical specifications (where deemed necessary) as detailed out hereunder. Furthermore, the design consultant shall either adopt the sanitary and mechanical installation symbols currently supplied by EBCS-9 and EBCS-11 or internationally used symbols with their legends.

2.0. APPLICATION OF THE DETAIL SANITARY DESIGN CHECKLIST

Detail requirements and guidelines are provided in the checklist below with corresponding check-boxes. Those points without check-boxes are important guidelines both for the designers and checkers. Accordingly, if the design complies reasonably with the design requirements, the checker shall put a “ ”mark in the box provided. If, however, the design is found inadequate or unacceptable, the checker shall then put an “x” mark in the box provided. Where requirements are partly not applicable in the design, the checkboxes shall be left open or unmarked. In such event, the checker shall compile his summary of comments on those items found inadequate or unacceptable and shall communicate them to the designer through the appropriate channel for further rectifications. Some comments may be eliminated through clarifications by the designer.

3.0. STAGES OF DESIGNS

The Sanitary and Mechanical designs shall have two stages for complex projects and one stage only for small projects and single unit buildings. The stages are:



3.1. Preliminary Proposal (for complex projects only)

This shall apply for high rise buildings and area development projects. The checking at this stage shall be:

• Proposal of site drainage system including recommendation of waste treatment method.

• Estimated capacity of treatment facility justified by approximate calculations.

• Proposed sources of water supply.

• Recommend water storage type and capacity

• Recommend water supply and drainage pipe types

• Need and type of air conditioning/ventilation, etc, by identifying area of requirement.

3.2. Draft Final Design

• Detail calculations and drawings to verify the preliminary proposal shall be prepared.

• Any changes on the above shall be highlighted together with the justification for it.

• Schedule of materials and fixtures to establish the required standard shall be prepared.

3.3. Final Design

Verification that all draft final design comments have been attended to. The design Consultant while designing the sanitary and mechanical designs or the design Checking Consultant (design checker) during checking the sanitary and mechanical designs should give their attentions to the following guiding principles.

4.0. INFORMATION TO BE OBTAINED AND ITEMS TO BE CHECKED

BY THE DESIGN CONSULTANT AT THE START OF DESIGNING A PROJECT 4.1. Study location of the building or buildings on the site. 4.2. Determine size, location, and depth of all adjacent available sewers and water

mains. Investigate the requirements of local Authorities/department and confirm



information received can lead to embarrassing controversies when the project is under construction.

4.3. Ascertain available water pressure at a given elevation. 4.4. If the project is an alteration or an addition to an existing building, check existing

services and equipment capacities. 4.5. Determine the need for a fire fighting system in the building. 4.6. Find out the need for special systems such as : gas, compressed air, vacuum air,

distilled water, demineralized water, medical gases, or other special systems. 4.7. Check the requirements of the code of practice (EBCS - 9) 4.8. Verify with the electrical design Engineer the current characteristics for motors,

controls, and heaters, and the maximum size of motors that can be started across the line.

4.9. Obtain a detailed wet areas and kitchen layouts and equipment list. 4.10. Both the design Consultant and the design checker should check the following:

4.10.1 Water supply system

• Source of water for domestic and fire fighting uses (municipal or

private water supply systems like wells, spring, river, lake and rain).

• Source of non-potable water if required.

• Employed water treatment methods for domestic use if the source of water is not from municipal or public water supply system.

• Employed water treatment methods if water is to be used other than for domestic use (requirement for Mg, Ca, Fe, etc. removal, ionic exchangers etc).

• Storage and distribution for public, industrial and fire fighting purposes.

• Pipe types used and their conveyance adequacy.

• Installation of water-supply systems.



4.10.2 Domestic and Industrial waste-water treatment & disposal systems

• Existence of municipal sewer lines. • Septic tanks and drain fields depending on the scale of the project,

available land, ground water tables, permeability of soil, etc. • Conventional waste water treatment and disposal methods (stabilization

pond, trickling filters, neutralizers, and other aerobic and anaerobic systems).

• Grit chambers, mud collectors and oil separators. • Types of wastewater collection and disposal pipes (sewers) and their

conveyance adequacy. • Installation of wastewater treatment and disposal systems.

4.10.3 Storm-water collection and disposal systems

• Material of Gutters, down pipes, spouts and their adequacy. • Open(or covered) channels, buried sewers and their adequacy. • Collection points (catch pits) and manholes. • Installation of storm water collection and disposal systems.

4.10.4. Heating, Ventilation and Air Conditioning Systems (HVAC)

a. Design consideration

• Comfort factors • Safety considerations

b. Ventilation

• Natural ventilation systems (through windows, doors and apertures) • Forced (mechanical) ventilation systems. • Local exhaust system



c. Air Conditioning

• Design conditions • System requirements • Basis of cooling load calculation

• Types of air conditioning system • Factors for the choice of air conditioning systems

d. Arrangements, Types and selection of equipment

• Types and selections

e. Duct sizing and ductwork

• Duct sizes and their adequacy, • Duct work • Corrosion protection finish

f. Installation

• Equipment installation • Insulation of piping systems • Insulation of ductwork systems • Electrical equipment and wiring • Installation systems and methods.

4.10.5 Steam and Compressed Air Supply Systems

• Steam piping, boilers and accessories. • Compressed air piping, compressors and accessories. • Adequacy of steam and compressed air supply systems. • Installation of steam and compressed air supply systems.



5.0 GUIDELINES ON PRINCIPLES AND PROCEDURES TO BE

FOLLOWED BY THE DESIGN CONSULTANT DURING DESIGNING & BY THE DESIGN CHECKER DURING CHECKING FOR THE DESIGN OF PLUMBING WORKS & THE PREPARATION OF PLUMBING DRAWINGS 5.1. Count the plumbing fixtures and estimate the following:

a. Sizes of house sewers

b. Size of water services

c. Hot water load (tank size and necessary makeup) 5.2. Determine if sump pumps or ejector pumps are required. 5.3. Determine if constant - pressure booster pumps or gravity or pneumatic tanks are

required. 5.4. Note the presence or absence or sufficient slope sinks, fixtures for the handicapped,

and drinking fountains or water coolers; and check any lack with the architect. 5.5. Ascertain whether drinking fountains will be supplied from a central or sub central

chilled water system or whether drinking fountains must be provided with local or integral cooling units.

5.6. Notify the electrical design engineer of the electrical requirements of the plumbing

work. 5.7. Locate roof drains, leaders, main stacks, fire standpipe risers, sprinkler risers, etc. 5.8. Check with the electrical design engineer and other specialized items designers

and/or installers regarding space conditions for risers, fire-hose cabinets, etc., and for required machinery room space.

5.9. Check the structural drawings for space conditions affecting the plumbing work. 5.10. Obtain minimum ceiling heights from the architectural drawings or architect and

check to see that the plumbing work clears these heights. 5.11. Note lack of proper pipe spaces and wall thickness for the plumbing work and

check this lack with the architect.



5.12. In general, piping should be run as direct as possible. However, except for piping buried underground, all piping should be run parallel to and at right angles to the walls, partitions, etc., and should be neatly grouped in parallel lines.

5.13. In general, piping should be run to clear steel and concrete beams. Where absolutely

necessary, piping may be run through beams. Where it is necessary to clip beam flanges or run piping through the web of steel beams or through concrete beams, permission from the structural engineer must be obtained and confirmed; and all such special conditions should be clearly noted on the drawings.

5.14. Note piping rising within a story as "rise." Note that rising to the story above as

"up". Piping dropping within a story should be noted as "drop." That dropping to the story below should be noted as "Dn". Piping at the ceiling should be noted as "at ceiling" when exposed and as "in ceiling" when concealed. Piping under the floor, other than obvious fixture drain lines, should be noted as "under floor", "at ceiling below", or "in ceiling below", as required.

5.15. Riser diagrams should be drawn at 1:50 scale whenever possible, but never less

than 1:100 scale. Water service, hot water heaters, sump pumps, ejector pumps, water pumps, tanks etc., should be shown on riser diagrams.

5.16. Unless the architect or owner of the project has a standard list of symbols that they

request be used, plumbing drawings should use standard symbols and abbreviations presented in the code (EBCS-9).

5.17. Preliminary designs should consist of the following drawings at 1:100 or 1:200

scale and information :

• Layout of sanitary - mechanical installation (description will schematic diagrams of the sanitary - mechanical system for complex projects).

• Description of the water supply (for public and industrial uses) and

sanitary system. • Source of water and treatment system. • Storage and distribution • Waste water collection, treatment and disposal system. • Storm water drainage system. • Technological information, preferably with schematic diagrams. • Fire fighting systems.



5.18 Final designs should consist of the following drawings and information

[calculations, reports (in accordance with the requirements of EBCS-9), etc):

5.18.1 Internal Installation :

• Water supply and sewerage layout (for domestic and industrial use) on floor plans at 1:50 scale.

• Three dimensional riser diagrams (axonometric diagrams), schemes

at 1:20, 1:50 scale. • Detail drawings of systems at 1:1, 1:5, 1:10, 1:20 scale. • Fire fighting installations at 1:50 scale. • Machinery layout at 1:50 scale. • Hydraulic and other necessary calculations for:

- public and industrial systems - fire fighting system - technological systems

• Inputs, outputs and by-products of technologically processes and employed treatment system for by-products where required.

5.18.2 External installation (site work).

• Water (public and industrial) supply system on site plan at 1:2000,

1:500 scale. • Waste water collection, treatment, and disposal systems at 1:200,

1:500 scale. • Fire Fighting installations at 1:200, 1:500 scale • Profile diagrams, profile tables or levels given on site plan as

necessary at v - 1:20, H - 1:200 or suitable scale. • Detail drawings of systems and appurtenances at 1:1, 1:5, 1:10,

1:20 scale. • Hydraulic and other necessary calculations for external installations.



6.0 ITEMS TO BE CHECKED BY THE DESIGN CONSULTANT WHEN COMPLETING A PROJECT AND LATER BY THE DESIGN CHECKER DURING THE CHECKING STAGE 6.1. Numbers on all plans

6.2. Floor elevations indicated at least on first floor and basement or cellar floor plans 6.3. General notes and reference to them on each drawing 6.4. Symbol list 6.5. Completeness of titles and title block, signature and professional registration number of designer on all drawings 6.6. Reference notes between plans and details (detail drawings, riser diagrams, profile diagram, etc.) and between plans and plot (site) plan 6.7. Indicated elevations of house sewers leaving the building and site sewers on profile diagrams or profile table 6.8. Indications of gate valves at entrance point of water supply pipe to buildings on appropriate floor plan on site plan at appropriate places 6.9. Plans against risers for agreement of pipe sizing and location of vent and water branches (high or low) 6.10. Plumbing plans against those of the heating, ventilating,

air-conditioning, and electrical trades for space clearances

6.11 Design of water supply, waste water treatment and disposal, and storm water collection and disposal systems as a whole

7.0. AIR PRESSURIZATION FOR SMOKE CONTROL IN ESCAPE ROUTES

Escape routes should be free of smoke during fire for occupants to safely evacuate . One of the ways of doing this is by air pressurization of escape routes to push back the smoke. In doing so, one may consider the following:

• Single stage or two stage pressurization; • Combustible materials in protected escape routs; • Methods of pressurizing the spaces to be pressurized like;

- pressurizing stair case (s) only;



- pressurizing the stair case (s) and all or part of the horizontal route; - pressurizing stair case and lobby; and - pressurizing lobbies and /or corridors only.

8.0. CHEMICAL OPERATED AUTOMATIC FIRE SUPPRESSION

SYSTEMS Chemical Operated Automatic Fire Suppression Systems are employed in areas where the use of water will either pose an adverse effect on the properties to be protected or not bring the fire under control. Such spaces are like:

• Data centres; • Computer centres; • Volts; • Archives/documentation areas; and • Control stations.



CHECK-LIST FOR ELECTRICAL DESIGN CHECKING



CHECK-LIST FOR ELECTRICAL DESIGN CHECKING

1.0. GENERAL The major objective of Electrical Design is to obtain a suitable, reliable, flexible, maintainable, economical and safe system. To meet this objective, the design shall comply with the prevailing worldwide-recognized standards and codes in general and in particular with Ethiopian Building Code Standards EBCS-10 (Electrical Installation of Buildings), Ministry of Infrastructure's (MoIS's) Technical Specifications, rules and regulations of the Ethiopian Electric Light and Power Corporation (EEPCO) and the Ethiopian Telecommunication Corporation (ETC). Besides fulfilling all the requirements of the project owner in every respect (technically and economically), the design should be no less than excellent in quality. It should not only be correct as far as wiring methods, feeder sizes, etc. are concerned, but should be presented in such a manner as to be easily interpreted. The materials specified shall confirm to international standards (built according to state-of-the-art) and as far as possible should be available in the local market.

The electrical drawings combined with written specifications, should leave no doubt as to be exactly what are required for the proper execution of the electrical works.

1.1. Application of the detail Electrical Design Checklist

Detail requirements are provided in the checklist below with corresponding check-boxes. Accordingly, if the design complies reasonably with the design requirements, the checker shall put a “ ”mark in the box provided. If, however, the design is found inadequate or unacceptable, the checker shall then put an “x” mark in the box provided. Where requirements are partly not applicable in the design, the checkboxes shall be left open or unmarked. In such event, the checker shall compile his summary of comments on those items found inadequate or unacceptable and shall communicate them to the designer through the appropriate channel for further rectifications. Some comments may be eliminated through clarifications by the designer.

1.2. Stages of design

The Electrical design shall have three stages for complex projects, two stages for medium sized projects and one stage only for small projects and single unit buildings.



The stages are: 1.2.1. Inception Stage (for complex projects only)

• Design concept in the form of a scheme design should be prepared and

checked at this stage, showing location of central distribution boards, Transformer and Generator houses, risers, cable ducts and power intake before preliminary design is done. This would help to avoid any major design change at preliminary design stage and thus enhance a smooth, forward flow in the design process.

1.2.2. Preliminary Stage (for complex and medium sized projects)

The following condition shall be met in any preliminary design to be submitted for checking:

• Completeness of Submittals titles and title block, signature and

professional registration number of designer on all drawings (design reports, drawings, estimates);

• Layout of distribution boards, fixtures, Sockets, call-systems and all other services required for that particular project;

• Type of fixture envisaged for the project and illumination level;

• Design factors to be considered:

1. Overall lighting arrangement solution with regard to the required illumination level and type of lighting fixture appropriate for the intended room function;

2. Consideration of the appropriate Switching system; and 3. Total Power requirement.

1.2.3. Final Stage (for all projects)

The following conditions shall be met in any final design to be submitted for checking:

• Completeness of submittals (drawings, calculations, specifications and bill of

quantities, catalogues, etc.); and • Redesign carried out as per the remarks agreed upon in the preliminary

stage (i.e. the submittals are expected to have incorporated corrections,



adjustments, alterations, etc., as have been instructed by the design checker and the client at the time of evaluating the preliminary design).

2.0. SUBMITTAL

The design consultant shall follow the existing procedures on presentation of documents, i.e. shall submit complete sets of drawings, specifications and bill of quantities, technical specifications (where deemed necessary), design report including catalogue or catalogue cutout (for special electrical systems and equipment). Submittal requirements for preliminary and final stage designs are as follows:

2.1 Preliminary stage (for complex projects only)

• Layout of electrical installation in scale 1:200 , 1:100;

• Description of the electrical system.

2.2. Final stage • Site plan in scale 1:500 , 1:200;

• Floor plans in scale 1:50 , 1:100;

• Detail drawings in appropriate scales;

• Distribution layout and wiring diagram;

• Detail of external light posts (poles) in appropriate scale;

• Riser diagrams;

• Details of system components;

• Light Fitting Schedule;

• Distribution Boards Schedules.

3.0. DRAWINGS

Electrical drawings, in general, shall cover the complete design of electrical systems. In doing so, the electrical designer shall either adapt the EBCS-10’s electrical installation wiring methods and symbols or otherwise give detailed legend. The drawings shall be arranged as follows:

• Legend, abbreviations and notes;



• Lighting layout;

• Power layout;

• Low voltage system layout;

• Special systems and equipment layout (UPS, etc.) • Ground system; • Lightning protection system; • Fire alarm system; • Site (exterior) lighting, power, low-current systems layouts; • Power single line diagram; • Panel board schedules; • Low voltage systems schematics; • Tele

- CCTV; - Fire alarm; - Public address; - Central TV-antenna; - Access control, etc.; and

• Lighting fixtures schedules and details.

4.0. DESIGN REPORT

4.1. Contents of design report depends upon the size of a project, and generally includes the following:

• A brief introductory description of the project; clear geographical location, data, etc.;

• Detailed description of electrical systems envisaged; and

• Design analysis.



4.2. The following design calculations shall be included in the design report. • Lighting (illumination levels) calculations;

• Power calculations;

• Voltage drop calculations;

• Short circuit calculations (where deemed necessary); and

• Other electrical system calculations.

5.0. SPECIFICATION AND BILL OF QUANTITIES

Specifications and bill of quantities for electrical works are covered under technical specifications and Bill of Quantities.

6.0. CODES AND STANDARDS In addition to specific requirements deemed necessary, all systems shall be designed in accordance with the latest edition of the following:

• EBCS-10, Electrical Installation of Building, Ethiopian Building Code standard; • QSAE, Quality & Standards Authority of Ethiopia; • IEEE, Institute of Electrical and Electronic Engineers; • IEC, International Electro-Technical Commission; • IPCEA, Insulation Power Cable Engineers Association; • EN, European Norms; • BS, British Standards; • EIA/TIA-568-Commercial Building wiring Standard; • EIA/TIA-569- Commercial Building Standards for Telecommunication pathway and

space; • EN/50/73- Cable and network for Computer System; and • Any other worldwide recognized standards.



7.0. CHECKING ACTIVITIES The design checker will contact both the client and the design consultant for detail information (existing, new and future expansion, etc.) and will check the following overlapping activities.

7.1. Lighting

• Illumination level Under/over design with respect to the task performed, Quality of luminaries – On

the basis of functionality & economic viability. • Lighting layout Achievement of uniform light distribution and intensity, mounting allocation and easy access. • Source of light Proper light distribution, necessity and type of emergency lighting system, battery

and charger. • External lighting Sufficient illumination level, type of fittings, ways of mounting (wooden or steel

pole), switching system, location of switch gears, power rating and quality.

7.2. Power • Main and sub-distribution board location, lead distribution protection adequate

reserve, total load, maximum load, power factor, diversity factor and rating of bus bars;

• Distribution board schedules – description (circuit), current rating and wire size (cross section);

• Type of distribution board – (Taking into account environmental conditions), purpose, method of assembly and quality; and

• Sub-circuit capacity; voltage drop of feeder cables.

7.3. External Installation

• Mains intake - Underground or overhead with respect to the nature and type of

project;

• Feeder cables - Ampacity, cross-section, voltage drop; and



• Cable lying- in cement pipe, plastic pipe or galvanized iron pipe or in trench

with sand or brick protection according to purpose, area and material availability.

7.4. Protection • Electrical - Proper and adequate Automatic Switchgears for all circuit and

feeders; and

• Mechanical - Protection against mechanical damages (for surface installation by PVC and metal pipes, etc.).

7.5. Power Cable & Insulated Conductors • Quality - Reliable, comply with international standard especially with IEC and

VDE; and

• Protection - Ampacity, cross-section, curvature.

7.6. Low current Installation • Telephone system - Compliance with ETC’s rules and regulation; • Telephone Services, Pathway for main cable &floor cables; • Computer network system- Location and type of Computer outlets, Location

and type of distribution rack(patch panels) & type of cables; • Bell call system - Necessity, circuitry & protection; • Sound system - Necessity, type and quality, circuitry and protection; • Fire, burglar alarms - Necessity, type, circuitry and protection; • clock system - Necessity, circuitry & protection; and • Other auxiliary systems - Necessity, wiring and protection systems.

7.7. Air Conditioning and Ventilation

• Verify power requirement with the mechanical/sanitary engineer; and • Co-ordinate with mechanical/sanitary engineer for circuitry, functionality and

protection system.



7.8. Lightning Protection System

• Necessity - Location and magnitude of consequence, height and purpose of building, frequency of strokes and protection from electrostatic and electromagnetic induction;

• Accessories - Type of rod (arrestor point), earth plate, wire size and test point junction box;

• Coverage - Whether protection is adequate for whole system or not; and

• Conventional or radioactive.

7.9. Grounding system

• Appliance - Ground for all appliances; and

• Conductor size - Minimum size of conductors with respect to EBCS – 10, EEPCO regulation, etc.

7.10. Power Supply

• Availability - Total load and reserve considering installation of (EEPCO –

Supply) transformer;

• Diesel Generator - If EEPCO supply is not available determination of power rating and specification taking into consideration future expansion;

• Standby Generator - Necessity, rating, selection of load (whole or partial), especially for hospitals, radio station and others; and

• Metering - Location, quantity, type (kWHm) and kVAm) and rating.

7.11. Schedules

The design submission should include the light fitting format schedule and distribution board schedules as per the samples presented in the

following pages or equivalent.



DCS-1 LIGHTING DESIGN CALCULATION SHEET

NO

AREA

(ROOM)

ILLUMINATION

LEVEL (LUX)

LENGTH

(M)

WIDTH

(M)

HEIGHT

(M)

WORKIG

PLANE (M)

UTILIZE FACTOR

LUMENS

PER LAMP

NUMBER

OF LAMPS

NUMBER OF

FITINGS CALCULATED

NUMBER OF

FITTINGS USED

REMARKS

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 21

PREPARED BY : ___________ DATE: _________ CHECKED BY : _________ SHEET NO.: _________ OF: __________



DCS-2 DISTRIBUTION BOARD SCHEDULE

PANEL BOARD : …………………… ……………….. MOUNTED ………….. SYM.A.I.C.MIN CIRCUIT BREAKER TYPE ……………….. AMP.MAIN BREAKER W/ ………….. AMP.TRIP …………….. VOLTS ……………….. PHASE ……….. WIRE ………….. HZ

LOAD PER PHASE (VOLT AMPERE) CCT NO.

CIRCUIT DESCRIPTION (LOAD SERVED)

NO. OF OIKE

TRIP AMP.

CONDUCTOR SIZE (SA.MM)

CONDUIT SIZE (MM) PHASE 1 PHASE 2 PHASE 3

1 2 3 4 5 6 7 8 9

10 11 12

TOTAL PANEL LOCATION VOLT AMPS LOAD DESCRIPTION D.F

CONNECTED DEMAND LIGHTING 1 SOCKET 0.67 SMALL MOTRS 1 MISCELLANEOUS EQUIPMENTS ….. TOTAL

PANEL BOARD WITH 25% SPARE CAPACITY : 1.25 X… = …VA FULL LOAD AMPS: …………………………………………………AMR INCOMING FEEDER CABLE : ……………………………………..SQ.MM

PREPARED BY : _________ DATE: _________ CHECKED BY : _________ SHEET NO.: __________ OF ________



DCS-3 MCC (MOTOR CONTROL CENTRE) SCHEDULE

VOLTAGE: _____________ CLASS : __________ TYPE: ___________ BUS : __________ AMPERE: __________

LOAD STARTER CCT BREAKER NO. DESCRIPTION

HP KVA RATEDAMPERE SOZE S[ACE AT AF

CABLE SIZE

CONDUIT SIZE

REMARK

PREPARED BY : ____________ DATE: __________ CHECKED BY: _________ SHEET NO.: __________ OF: ________

N.B. AT - TRIP AMP. AF - FULL LOAD AMP.



DCS – 4 PANAL BOARD SCHEDULE SUMMARY

MAIN RATING AMPERES

PANEL DESIGNATION

VOLTAGE MOUNTING

LUGS ACB

BRANCH CIRCUIT BREAKERS

TOTAL LOAD KVA

REMARKS

PREPARED BY : ___________ DATE: _________ CHECKED BY :_________ SHEET NO.: __________ OF: ________



DCS – 5 TRANSFORMAER SCHEDULE

VOLTAGE RATING DESIGNATION LOCATION KVA PHASE

PRIMARY SECONDARY REMARKS

PREPARED BY : ___________ DATE: _________ CHECKED BY :_________ SHEET NO.: __________ OF: ________



DCS – 6 LOAD SUMMARY SHEET

ITEM NUMBER LIGHTING

KVA CONNECTED

FUTURE D.F.

DEMAND

SOCKET KVA CONNECTED FUTURE

D.F. DEMAND

PROCESS KVA CONNECTED FUTURE

D.F. DEMAND

COOLING KVA

CONNECTED FUTURE

D.F. DEMAND

ISCELLANEOU KVA

CONNECTED FUTURE

D.F. DEMAND

TOTAL KVA

CONNECTED FUTURE

D.F. DEMAND

PREPARED BY : ___________ DATE: _________ CHECKED BY :_________ SHEET NO.: _________ OF: ________



DCS – 7 VOLTAGE DROP CALCULATION SHEET

CABLE ITEM FROM TO

VOLTAGE (V)

LOAD (KW)

RATING (A)

LENGTH (M)

CABLE RESISTANCE

(OHM/M)

NUMBER OF

SETS

VOLTAGE DROP

(V)

% VOLTAGE

DROP 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22

PREPARED BY : ___________ DATE: _________ CHECKED BY :_________ SHEET NO.: _________ OF: ________

*Consider Derating Factors



CHECK-LIST FOR

SPECIFICATIONS(BILL DESCRIPTIONS)

AND PRICED BILL OF QUANTITIES



CHECK-LIST FOR SPECIFICATIONS (BILL DESCRIPTIONS)AND PRICED BILL OF QUANTITIES

1.0. GENERAL STATEMENT

A set of Construction Contract Documents includes, in addition to the plans and specifications, Priced Bill of Quantities, which defines the scope of the project in the various types of works envisaged and the corresponding costs. The preparation of this Bill of Quantities and cost estimates (Engineer’s Estimate), prior to the letting of contract, are the core effort of the quantity surveyor and cost estimator (Evaluator). Mistakes made in the Bill of Quantities will entail variation orders against the owner's budget for the construction in question. Therefore, their preparations should be undertaken with great care. The unit prices should be checked based on current prices and if possible, price index system should be developed. Rules and procedures embodying precise standards of measurement and descriptions, for example, that of the Royal Institute of Chartered Surveyors should be strictly followed by quantity surveyors of consultants. The Bill of Quantities is prepared under two sections. The first being, the sub-structure and the second, superstructure. Under these two sections, different trades of works like Excavation and Earth Work, Concrete, Masonry, and Block Works, Roofing, Metal Works, Carpentry and Joinery, Plastering, Painting Electrical, Sanitary and Mechanical works, etc. are described and listed in units and amounts on the format solely prepared for this purpose.

2.0. APPLICATION OF THE DETAIL CHECKLIST

Detail requirements are provided in the checklist below with corresponding check-boxes. Accordingly, if the specifications and costs complies reasonably with the requirements, the checker shall put a “ ”mark in the box provided. If, however, the specifications and costs are found inadequate or unacceptable, the checker shall then put an “x” mark in the box provided. Where requirements are partly not applicable, the checkboxes shall be left open or unmarked. In such event, the checker shall compile his summary of comments on those items found inadequate or unacceptable and shall communicate them to the quantity surveyor through the appropriate channel for further rectifications. Some comments may be eliminated through clarifications by the quantity surveyor.



3.0. CHECKING OF THE BILL DESCRIPTIONS AND BILL OF QUANTITIES The Checker should look into the various trades of works under the following three sections.

3.1. Sub-structure 3.1.1. Excavation and Earth Works 3.1.2. Concrete Works 3.1.3. Masonry Works

3.2. Super-structure

3.2.1. Concrete Works 3.2.2. Masonry, Brick and Block Works 3.2.3. Roofing and Waterproofing works 3.2.4. Carpentry and Joinery works

3.2.5. Steel Structure works

3.2.6. Metal Works

3.2.7. Finishing Works 3.2.8. Glazing works 3.2.9. Painting works 3.2.10.Sanitary and Mechanical Installations 3.2.11.Electrical Installations

3.3. Site work

3.3.1. Road and Fence Constructions 3.3.2. External Sanitary Works 3.3.3. External Electrical Works



4.0. MAIN ACTIVITIES AND ITEMS TO BE CHECKED

4.1. Bill Descriptions and Bill of Quantities

4.1.1. The title, nature, and location of the project shall be stated.

4.1.2. A general description, i.e. materials used and type of finishing of the works shall be given. 4.1.3. The names and addresses of the Employer and the Consultant to be named in the contract shall be submitted. 4.1.4. Complete sets of drawings from which Bill Descriptions originated shall be submitted. 4.1.5. Lists of the drawings from which the Bills of Quantities have been prepared shall be given. 4.1.6. Items which are not identified in the Technical Specifications and Methods of Measurement have to be specified in details in the bid document (Bill Descriptions). 4.1.7. For the submitted Bill of Quantities, take off sheets shall be submitted separately. 4.1.8. The take off sheet format on which the calculation is made shall be of the same as the attached sample or equivalent. 4.1.9. The final submission of any Bill of Quantities have to quote prices for the

different items. 4.1.10. In preparing the Bill of Quantity for separate buildings within the

same site, Quantities and Bill Descriptions have to be prepared separately for each type.

4.1.11. Since the Bill of Quantities are, in effect, the definitions of contract

responsibilities, their preparations should be undertaken with great care. In preparing Bill of Quantities and Bill Descriptions, it has to be strictly checked whether they are fully described and accurately represent the quantities and qualities of the works to be carried out.

4.1.11. Preparation of Bill of Quantities shall be divided into sub-structure

and super-structure.



4.1.13. Where the unit of billing is the meter, quantities shall be billed to the nearest whole unit. Fraction of unit less than half shall be disregarded and all other fractions shall be regarded as a whole unit.

4.1.14. For high rising buildings, the Bill of Quantities of concrete and form work

have to be prepared on each individual floor for the following specified items. • Columns • Beams • Slabs • Wall • Shear Walls • Staircase Steps • Sun Breakers, Mullions • Lintels

4.1.15. Plastering for the under specified items has to be quantified separately.

• Concrete Items

• Brick Walls

• Hollow Concrete Block Walls

• Masonry Walls

4.1.16. Septic tank, water reservoir and water tower have to be quantified item by

item rather than specifying the capacity and quantified by number. 4.1.17. For all structural drawings, bar schedule for steel reinforcement shall be

prepared using the proper format. N.B. Following the technical specification, the bill of quantities should

have cross reference to the specification and be short in description.



4.2. Unit Prices

4.2.1.The construction unit prices should be built-up by considering current construction material, labour and machinery rental costs which are called direct costs as well as indirect costs such as overhead(Project level and site overheads), Profit, Financial, Risk, etc. costs. Therefore, cost break down analysis should be submitted.

5.0. SUBMITTAL REQUIREMENT FOR COST ESTIMATE

This portion of the checklist should be read together with article 3.2.2.5 of the Manual and the estimator shall submit the following together with the final cost estimate:

5.1. The approved design document and report as required under final design

submission; 5.2. The specifications and method of measurements or reference to the used

standard method , if approved standards are used; 5.3. The source of applied unit rates or breakdown used to arrive at unit rates; 5.4. Quotations or price list for provisional sums and utilities to be provided by

others; 5.5. Take off sheets (manual or printout) if applicable; 5.6. Analysis sheets for cost break downs; and 5.7. Master implementation schedule and cash flow and calculation of contingencies. No

calculations or cost variation contingencies are required for projects with combined tender and implementation phases not exceeding 24 months.

It is to be noted that the designer will not be required to submit take-off sheets if computer aided design is used and Quantities can be calculated direct on the software without manual operation. The estimator and Checker (controller) need to agree on the cost being reasonable before the project moves to the Tender stage.



6.0. DUTIES AND RESPONSIBILITIES OF THE ESTIMATOR AND CHECKER

6.1. The estimator is responsible for submitting all the documents and references (where these references are in common use );

6.2.. The controller (checker) shall review all documents for compliance with the

above submission requirements; 6.3. If satisfied, the details of quantities and costing shall be checked; 6.4. Quantities and costing shall be checked in full or at random depending on the

agreement for review;

6.5. Since the success of a project design and implementation is not dependent only on the quality and accuracy of the Design and Construction standards, but is also on its cost effectiveness and execution within the limit of a set budget, the checker should check whether or not the cost of the project falls within the pre-set budget limit.

6.6. The estimator shall check the document in accordance with the above sections

only. Discretion shall be used only if the provisions of this manual do not apply to a particular item or section of the project.

If agreement can not be reached between the estimator and controller on the estimated cost of works or a part thereof, the final decision shall be in accordance with the Guideline to be issued by the Ministry to resolve differences.



TAKE-OFF SHEET

PROJECT : _____________________________________ PAGE:________ LOCATION: _____________________ OWNER:________________________

SUB/SUPER STRUCTURE

PREPARED BY : __________________________ APPROVED BY:_________________ SIGNATURE: __________________________ DARE : ________________________



BAR SCHDULE PROJECT : _____________________DRG.NO________________ PAGE:________ LOCATION: _____________________CALCULATED BY :______ SIG. ________ SUB/SUPER STRUCTURE

LOCATION

BAR NO.

SHAPE

∅

LINGTH

NO.OF BARS

∅

∅

∅

∅

∅

∅

∅

∅

∅

Total Length weight kg/m Total Weight kg.

Weight kg/ml

∅6 = 0.222 ∅8 = 0.395 ∅10 = 0.617 ∅12 = 0.888

∅14 = 1.208 ∅16 = 1.578 ∅18 = 1.998 ∅20 = 2.466

∅22 = 2.984 ∅24 = 3.551 ∅26 = 4.168 ∅28 = 4.834

∅30 = 5.549 ∅32 = 6.313



ANALYSIS SHEET FOR DIRECT UNIT COST [1:3] PRJECT: ___________________________________________ LABOUR HOURLY OUT PUT: ________________ WORK ITEM: _____________________________________ EQUIPEMENT: ____________________________ TOTAL QANTITY OF WORK ITEM: ___________________ RESULT: ____________________________

Material Cost (1:01) Labour (1:02) Equipment Cost (1:03) Type of Material

Unit

* Qty.

Rate

Cost Per Unit

Labour by Grade

No

UF

** Indexed Hourly Cost

Hourly

Cost

Type Equipment

No

UF

Hourly Rental

Hourly Cost

Total (1:01) Total (1:02) Total (1:03) A = Materials Unit Cost ___________________ B = Manpower Unit Cost _______________ C = Equipment Unit Cost ______________ Total of (1:2) _______________ Total of (1:03) ______________ Hourly Output _______________ Hourly Output ______________

Direct Cost of Work Item = A + B + C = _______________ Remark ____________________________________________________________________________________________________________________ UF : UTILIZATION FACTOR * : INCLUSIVE OF WASTE TRANSPORTING HANDLING etc. ** : INCLUSIVE OF BENEFITS, TRAVEL SUBSIDES AND COST OF OVERTIME RELATED TO TARGETED OUTPUT.



BILL DESCRIPTION SHEET

Item No.

Description

Unit

Qty.

Rate

Amount



CHECKLIST FOR

DRAWING STANDARDS and

REQUIREMENTS OF DETAILS



CHECKLIST FOR DRAWING STANDARDS AND REQUIREMENTS OF DETAILS

1.0 GENERAL

This section of the checklist should be related to 3.2.2.6 of the manual section of this document. The submission requirements for each discipline is covered in the checklist for each discipline. However the drawing standards and requirement of details in the submission for each discipline should satisfy the following requirements:


Detail requirements are provided in the checklist below with corresponding check-boxes. Accordingly, if the drawing standards and requirements of details complies reasonably with the requirements, the checker shall put a “ ”mark in the box provided. If, however, the submission is found inadequate or unacceptable, the checker shall then put an “x” mark in the box provided. Where requirements are partly not applicable in the drawing standards and requirements of details, the checkboxes shall be left open or unmarked. In such event, the checker shall compile his summary of comments on those items found inadequate or unacceptable and shall communicate them to the designer through the appropriate channel for further rectifications. Some comments may be eliminated through clarifications by the designer.

2.0. PAPER SIZES AND UTILIZATION

2.1. Paper size

The following are the dimensions of oversize sheets.

Designation Dimensions RA-0 860 X 1220 mm RA-1 610 X 860 mm RA-2 430 X 610 mm Oversized sheets are not recommended for A3 and A4 designation.



2.2. Utilization

Drawings shall normally be produced on A-0 size

A-1 size A-2 size A-3 size A-4 size

All documents other than drawings shall be produced in A-4 portrait or landscape format. Where it is difficult to contain the texts in A-4 format without compromising font, A-3 size shall be used.

2.3. Framing

Sheet by type Measurement in millimetres Left Right Top Bottom Regular 20 10 5 5 Oversize 20 10 75 75

The inner frame shall be off-set 50 mm for the outer frame. Framing for A-3 and A-4 is optional except the left edge outer line when the papers are used for drawings. Drawing sheets may be divided up into grids, which grids shall be in letters and numbers placed within the inner and outer frames. Sizes bigger the A-4 shall have folding margins indicated in heavy line within the inner and outer frames. The line shall not be less than the 0.5 mm thick.

3.0. TITLE BLOCKS

The title block shall contain the following minimum information:

• the name, logo, and full address including telephone, fax, e-mail etc of the design firm

• the name of the project owner • the reference of the project



• the title of the drawing • the drawing reference number • the initials and registration numbers of the designer, developer and drawer • the true scale and the plot scale • the date of the drawings • Revision column with date, revision number and description. Revision shall be

entered from bottom in an upward direction • Column for entering comments, notes, references, etc. • other information as required under each project • colour and pen assignments • Notes on unit of measurement

4.0. DRAWING PEN ASSIGNMENTS

4.1. Pen selection

It is recommended that pen assignments follow the ISO Standard for simplicity of manual editing of drawings after reduced or enlarged sizes are printed. The formula that ISO uses to determine line thickness is the function of √2. The proposed sizes are

0.1; 0.13; 0.18; 0.25; 0.35; 0.50; 0.70; and 1.0



4.2. Notes on drawing

The colour selection and the pen assignments shall be entered in the note section of the title block.

4.3. Dimensioning

The system of measurement shall be in metric. The following conventions shall be used: • Linear, radial and circumferential dimensions shall be in millimetres • Elevations shall be in meters with plus or minus sign in front to indicate

position in relation to reference. Elevations shall be placed to two decimals accuracy. The elevation reading shall be preceded by a “0” if less than one.

• Radial dimensions shall have the letter “R” preceding the dimension. • Angular dimensions shall be in decimal degrees with accuracy of not less than two

decimal points. • Dimensions shall, to the extent possible be written aligned with the dimension line

and readable from the bottom-up or left to right. • Dimensions that are not to scale shall be underlined. • If a dimension line can not be completely drawn to its normal termination

point, the free end shall be terminated with double arrow heads. • The units of measurement used in the works like “All dimensions are in mm,

angles are in decimal degrees, elevation are in meters, etc.” shall be entered in the notes section of the title block.

4.4. Binding and Presentation

4.4.1. Binding

The following binding format shall be followed for submission of drawings and other documents for checking:

4.4.1.1. Drawings for each discipline shall be bound in separate volumes. Each copy shall be bound separate as well.



4.4.1.2. The following binding standards shall be used:

• All drawings with sizes of A-2 and above shall be folded into A-4 size and placed in a box (ring) file. The binding edges of the drawing shall be protected with a hard (plastic) protection at the punch zone.

• A-3 size drawings may either be handled as above or bound using

comb binder. • All A-4 size documents including drawings shall be bound using

comb binder. The documents shall be protected with hard or plastic cover.

• Design reports and calculations shall be bound together but

separate for each discipline. • Specifications, tender documents, pricing documents, etc shall

each be bound separate.

4.4.2. Information

4.4.2.1. Covers to documents shall have the following information at the minimum: • The reference of the project • The name of the employer

• The reference of documents contained in the volume

• The volume number if more than one

• The full address of the designers

• The date of preparation

• Revision numbers and dates if it is a second or more submission

• Intended purpose of submission

4.4.2.2. Table of contents

• Each document other than drawings shall have a table of contents behind the cover. Each table of contents shall have the sub-headings and page number



• The table of contents for drawings shall be the first page of the bound document and contain the following at the minimum:

o Reference to discipline o Title of Drawing (discipline) o Used scales o Date of production and last revision number and date

4.4.3. Submittals and distribution

The following submittals are to be made. Submittals shall always refer to the number of copies required for approval. Revised pages of submittals shall be considered as replacements and not additional submittals. The checker, employer and the Ministry shall each keep only checked and approved copies.

The minimum required submittals are the following:

• Preliminary designs and documents – 4 copies • Draft final design and documents – 2 copies

• Final design and documents – 4 copies

• The approved copies shall be distributed as follows

o One copy each to the Ministry and employer o One copy to the designer o One copy to be retained by the checker



CHECKLIST

FOR BIDDING AND CONTRACT DOCUMENTS



CHECKLIST FOR BIDDING AND CONTRACT DOCUMENTS

1.0 GENERAL

This section of the checklist should be related to 3.2.2.7 of the manual section of this document.

The set of bidding and contract documents submitted for checking should be in accordance with the guidelines issued from time to time by the Ministry. However, they should include those listed in this checklist.


Detail requirements are provided in the checklist below with corresponding check-boxes. Accordingly, if the Bidding and Contract Documents comply reasonably with the requirements, the checker shall put a “ ”mark in the box provided. If, however, the submission is found inadequate or unacceptable, the checker shall then put an “x” mark in the box provided. Where requirements are partly not applicable in the Bidding and Contract Documents, the checkboxes shall be left open or unmarked. In such event, the checker shall compile his summary of comments on those items found inadequate or unacceptable and shall communicate them to the designer through the appropriate channel for further rectifications. Some comments may be eliminated through clarifications by the drafter.

2.0. BIDDING DOCUMENTS:

The Bidding Documents should include the following:

2.1. Invitation to Bid;. 2.2. Standard Instructions and Information to Bidders; 2.3. Particular Project Instructions & Information of the Standard Instructions

and Information to Bidders; 2.4. General Conditions of Contract (conditions of contract, Part I); 2.5. Special conditions of contract (conditions of contract, Part II); 2.6. Technical specifications and Methods of Measurement;



2.7. Formats − Form of Bid and appendix thereto; − Form of Bid Security; − Form of Bank Guarantee for Mobilization Advance Payment; − Form of Contract Agreement and appendix thereto; − Formats for Day work Schedule (for labour, equipment and Basic

material); − Formats for Schedules (work, labour, equipment, material cash

flow); 2.8. Preambles, Specifications(Bill descriptions) and Bill of Quantities ; 2.9. Technical Specifications and Methods of measurement; 2.10. Day Work Schedule (can be included in the Bill of Quantities) 2.11. Drawings.

3.0. CONTRACT DOCUMENTS:

The Contract Documents should include the following:

3.1. the Construction Agreement and Appendices thereto; 3.2. the Letter of Acceptance dated [ date and address]; 3.3 signed Form of Bid of the Contractor, Appendices and Annexes thereof; 3.4. the Particular Conditions of Contract (to be inserted only if applicable); 3.5. standard Conditions of Contract for Building Construction Works; 3.6. signed and numbered Prints of Drawings; 3.7. signed Specifications(Bill descriptions), Priced Bill of Quantities and/or other

pricing document as applicable; 3.8. signed Technical Specifications and Methods of Measurement;



3.9. the Particular Project Information and Instructions; 3.10. the Standard Instructions and Information to Bidders for Building

Construction Works; and 3.11. (any other documents required to form part of the Contract).



ANNEX 1

TYPES OF BUILDINGS



ANNEX 1

TYPES OF BUILDINGS

In order to determine the design consultants' and design checkers’ service fee, building projects are identified in types based on function and grouped into three categories in order of magnitude and complexity. Accordingly, the three categories are "SIMPLE", "MODERATE" and "COMPLEX". Simple Projects These refer to projects or buildings with simple geometry and limited functions. The geometric feature and functions do not require specialized design input. The unit cost in this category may not be much but due to repetitive units and the resultant infrastructure and services the project cost can run into millions. Moderate Projects These refer to buildings or projects with complex geometry and a combination of two or three functions put together in one. Complex Projects These refer to projects with complex geometry and which have more than three functions in the program. Buildings can be classified, based on occupancy, as follows: GROUP 1 PROJECTS Group A : Residential Buildings Group B : Educational Buildings Group C : Business Buildings Group D : Mercantile Buildings GROUP 2 PROJECTS Group E : Institutional Buildings Group F : Assembly Buildings GROUP 3 PROJECTS Group G : Industrial Buildings Group H : Storage Buildings Group I : Hazardous Buildings



1. Group A : Residential Buildings

These are those buildings in which sleeping accommodation is provided for normal residential purposes, with or without cooking or dining or both facilities. Buildings of Group A are further sub-divided as follows:

i. Lodging and Rooming Houses ii. One or two Family Private Dwellings, quadruple houses, etc. iii. Dormitories iv. Apartment Houses (Flats) v. Hotels

2. Group B : Educational Buildings

These include any building used for school, college, or day-care purposes for more than 8 hours per week involving assembly for instruction education or recreation and which is not covered by Group F.

3. Group C : Business Buildings

These include any building or part of a building, which is used for the transaction of business (other than that covered by building in Group D); for the keeping of accounts and records and similar purposes; doctors' and dentists' (unless these are covered by the provisions of Group E); service facilities, such as new stands, lunch counters serving less than 100 persons, barber shops and beauty parlours. City halls, town halls, courthouses and libraries should be classified in this group in so far as the principal function of these is transaction of public business and the keeping of books and records. Minor office occupancy incidental to operation is another type of occupancy should be classified under the relevant group for main occupancy.

4. Group D : Mercantile Buildings

These include any building or part of a building, which is used as shops, stores, markets, for display and sale of merchandise, either wholesale or retail. Office, storage and service facilities incidental to the sale of merchandise and located in the same building should be included under this group. Minor merchandising operations in buildings primarily meant for other uses should be covered by group under which the predominant occupancy is classified.



5. Group E : Institutional Buildings

These include any building or part therefore, which is used for purposes such a medical or other treatment or care of persons suffering from physical or mental illness, disease or infirmity; care of infants, conval escents or aged persons and for penal or correctional detention in which the liberty of inmates is restricted. Institutional buildings ordinarily provide sleeping accommodation for the occupants. Buildings under group C are further sub-divided as follows:

i. Hospitals and Sanitaria ii. Custodial Institutions iii. Penal Institutions

6. Group F : Assembly Buildings

These include any building or part of a building, where group of people congregate or gather for amusement, recreation, social, religious, patriotic, civil, travel and similar purpose, for example, theatres, motion picture houses, assembly halls, auditoria, exhibition halls, museums, skating rinks, gymnasiums, restaurants, places or worship, dance halls, club rooms, passenger stations and terminals or air, surface and marine public transportation service, recreation piers and stadia. Buildings under group F are further sub-divided as follows:

i. Sub-division F-1 This sub-division includes any building primarily meant for theatrical or operatic performances and exhibitions and which has a raised stage, proscenium curtain, fixed or portable scenery or scenery loft, lights, motion picture booth, mechanical appliances or other theatrical accessories and equipment and which is provided with fixed seats over 1000 persons. ii. Sub-division F-2 This sub-division includes any building primarily meant for use as described for sub-division F-1 but with fixed seats for less than 1000 persons. iii. Sub-division F-3 This sub-division includes any building, its lobbies, rooms and other spaces connected thereto, primarily intended for assembly of people, but which has no theatrical stage or theatrical and/or cinematographic accessories and has



accommodation for more than 300 persons, for example, dance halls, night clubs, halls for incidental picture shows, dramatic, theatrical or educational presentation; lectures or other similar purposes, having no theatrical stage except a raised platform and used without permanent seating arrangement; art galleries; museums; lecture halls; libraries; passenger terminals and buildings used for educational purposes for less than 8 hours per week. iv. Sub-division F-3 This sub-division includes any building primarily intended for use as described in sub-division D-3 but with accommodation for less than 300 persons. v. Sub-division F-4 This sub-division includes any building meant for outdoor assembly of people not covered by sub-division F-1 to F-4, for example, grand stands, stadia, amusement park structures, reviewing stands and circus tents.

7. Group G : Industrial Buildings

These include any building or part of a building, or structure in which products or materials of all kinds and properties are fabricated, assembled or processed, for example, assembly plants, laboratories, dry cleaning plants, power plants, pumping stations, smoke houses, gas plants, refineries, dairies and saw mills.

8. Group H : Storage Buildings

These include any building or part of a building, used primarily for the storage or sheltering (including servicing, processing or repairs incidental to storage) of goods, wares or merchandise (except those that involve highly combustible or explosive products or materials), vehicles or animals, for example, warehouses, cold storages, freight depots, transit sheds, store houses, truck and marine terminals garages, hangers (other than aircraft repair hangars), grain elevators, barns and stables.

9. Group I : Hazardous Buildings

These include any building or part of a building which is used for the storage, handling, manufacture or processing of highly combustible or explosive materials or products which are liable to burn with extreme rapidity and/or which produce poisonous fumes or explosions; for storage, handling, manufacturing or processing which involve highly corrosive, toxic or noxious alkalies, acids or other liquids or chemicals producing flame, fumes and explosive, poisonous irritant or corrosive gases; and for the storage, handling or processing of any material producing explosive mixtures of dust or which result in division of



matter into fine particles subject to spontaneous ignition. Examples of buildings in this class are those buildings which are used for: a. Storage under pressure of more than 0.1 N/mm2 and in quantities

exceeding 70m3 of acetylene, hydrogen, illuminating and natural gases, ammonia, chlorine, phosgene, sulphur dioxide, carbon dioxide, methyl oxide and all gases subject to explosion, fume or toxic hazard;

b. Storage and handling of hazardous and highly flammable liquids;

c. Storage and handling of hazardous and highly flammable or explosive

materials other than liquids; and

d. Manufacture of artificial flowers, synthetic leather, ammunition, explosives and fireworks.



ANNEX II

LETTER OF CONFIRMATION



ANNEX II

LETTER OF CONFIRMATION

This is to confirm that I the under signed ____________________________

Present employment address _____________________________________ have not been

participated under any consulting Architects and Engineers firm for the design of

__________________________________ Project announced by the client on

___________________________Newspaper.

Therefore, I accept the invitation to be the design checker to check

the____________________________ design of the aforementioned project to my best

knowledge pursuant to the professional ethics.

I have signed this letter of confidence of the client in Addis Ababa, dated

_____________ of ____________________.

__________________ ___________________

Name Signature



ANNEX III

DUTIES, RESPONSIBILITIES

AND

QUALIFICATION REQUIREMENTS

OF

DESIGN CHECKERS



ANNEX III

DUTIES, RESPONSIBILITIES AND QUALIFICATION REQUIREMENTS OF

DESIGN CHECKERS

1. Duties and Responsibilities - The design checker should be registered in the capacity of practicing

professional by the ministry in his/her field of discipline.

- Should handle the checking with highest ethical and professional

standards.

- Should submit reports, his/her previous works and academic achievements

to the Ministry.

- should put the firm’s stamp for each discipline on the drawings checked

by them, sign and put their professional registration number on the

drawings; and

- Shall present indemnity insurance guarantee for their professional services

during the assignment.

2. Qualification Requirements - Masters Degree and 10 years or above experience in one of the disciplines,

or;

- Bachelors Degree and 12 years or above experience in consulting building

design or in checking designs, works; - Proven experience in project management; - Ability to work co-coordinately with other organizations; and - At least two reference letters, from senior professionals.



ANNEX IV

AGREEMENT FOR DESIGN CHECKING SERVICES



ANNEX IV

AGREEMENT FOR DESIGN CHECKING SERVICES

between

_________________________________________________

[ Name of the Employer ]

and

____________________________________________________

[Name of the Consulting Firm]

for

[Name of the building project]

Dated: __________, _______



FORM OF AGREEMENT FOR

DESIGNDESIGN CHECKING OF [Name of the building project ]

This Agreement (hereinafter, together with the Standard Conditions, Special Conditions, the Appendices and all the documents annexed hereto and forming an integral part hereof, called the "Agreement")

is made the _____ day of the month of _________in the year

______,between on the one hand,_______________(hereinafter called the "Employer") and, on the other hand________________(hereinafter called the "Design checker" ).

[ If the Design Checker consist of more than one entity, the above should be

partially amended to read as follows: ….(hereinafter called the " Employer") and ,on the other hand, a joint venture

consisting of the following entities, each of which will be jointly and severally liable to the Employer for all the Consulting Firm obligations under this Agreement, namely, ______________________ and ______________________ (hereinafter called the "Design checker")].

WHEREAS

a. the Employer is desirous of obtaining Design and related document checking Services of ________________ as defined in the general conditions attached to this Agreement(hereinafter called the "Services");

b. the Design Checker, having represented to the Employer that he has the

required professional skills personnel and technical resources, has agreed to provide the Services on the terms and conditions set forth in this Agreement;

c. the Employer has allocated the necessary budget towards the cost of Services

and intends to apply a portion of the proceeds of this budget to eligible payments under this Agreement;

NOW THERFORE the parties hereto hereby agree as follows:

1. The Employer hereby appoints the Design checker and the Design Checker accepts the appointment on the conditions as laid down in the Special Conditions, Standard Conditions and Appendices annexed thereto and made a part hereof.



2. The mutual rights and obligations of the Employer and the Design Checker

shall be as set forth in the Agreement ; in particular: a. the Design Checker shall carry out the Services in accordance with the

provisions of the Agreement; and b. the Employer shall make payments to the Consulting Firm in

accordance with the provisions of the Agreement.

3. The following documents attached hereto shall be deemed to form an integral part of this Agreement:

a. letter of invitation; b. minutes of negotiations;

c. addendum/clarifications; d. the Special Conditions of Agreement;

e. the General Conditions of Agreement; and

f. the following Appendices.

APPENDIX A : SCOPE OF SERVICES APPENDIX B : ASSIGNED SPECIALISTS, PERSONNEL, EQUIPMENT AND FACILITIES TO BE

PROVIDED BY THE EMPLOYER APPENDIX C : REMUNERATION AND PAYMENT APPENDIX D : COMMENCEMENT AND COMPLETION

APPENDIX E : REPORTING REQUIREMENTS APPENDIX F : KEY PERSONNEL AND

SUBCONSULTANTS APPENDIX G : DUTIES OF THE EMPLOYER



This Agreement comes into force on___________________________ IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be

signed in their respective names as of the day and year first above written. FOR AND ON BEHALF OF FOR AND ON BEHALF OF THE EMPLOYER THE DESIGN CHECKER ____________________ ______________________

WITNESSESS 1.____________________ 1. __________________ 2. ___________________ 2. __________________



APPENDIX A

SCOPE OF SERVICES

The design checker will be responsible for checking the designs and related documents at different design stages of the project. The design checker shall perform the following tasks:

1. Design Checker should screen the designs whether or not they are in a substantially

acceptable stage before they proceed with further checking. If the designs are not substantially completed and are not in a checking stage, the design checker shall return them to the Employer and the Employer shall cause the design consultant to complete the designs.

2. The Design Checker should handle the checking of designs and related documents with

the highest ethical and professional standards, free from subjective evaluation, prejudice or bias in professional advice rendered in the checking processes and strictly in accordance with the design checklist for each discipline presented in section 3 of the Manual for Building Design Checking and Procedure for outsourcing;

3. During the checking processes, if the comments are many and major, the checker shall

submit his comments to the Employer to be transmitted to the Design Consultant to rectify the comments and re submit the designs for re checking. The time wasted for rectifying the comments shall be counted to the Design Consultant. The net time used by the Design Checker for checking and report preparation shall be Considered as completion time for checking.

4. The Design Checker should submit reports and outputs of the checking to the Employer

copied to the Ministry within the pre-set time schedule indicated in the service agreement;

5. The Design Checker should put the firm’s stamp for each discipline on the drawings

checked by them, sign and put their professional registration number on the drawings; and

6. The design checker is liable to the design under consideration. The liability is related

and limited to the design checking service fee.



APPENDIX B

ASSIGNED SPECIALISTS, PERSONNEL, EQUIPMENT AND

FACILITIES TO BE PROVIDED BY THE EMPLOYER

(Describe in here the assigned specialists, personnel, equipment and facilities to be provided by the Employer. If not applicable, say "NOT APPLICABLE").



APPENDIX C

REMUNERATION AND PAYMENT

(Describe in here the remuneration and payment)



APPENDIX D

COMMENCEMENT AND COMPLETION

(Describe in here the commencement and completion time of the Services).



APPENDIX E

REPORTING REQUIREMENTS

(Describe in here the reporting requirements).



APPENDIX F

KEY PERSONNEL AND SUBCONSULTANTS

(LIST IN HERE KEY PERSONNEL AND SUBCONSULTANTS)



APPENDIX G

DUTIES OF THE EMPLOYER

(Describe in here the duties of the employer).

design checking guidelines

Documents

design consultants

design checkers

design checklist

ministry of infrastructure

building projects

countrys building code

procurement procedures

following manual