manfred huber, dipl. arch. eth sia, ceo aardeplan ag … huber.pdf · 2014. 2. 12. · rock wool:...

57th LCA Discussion Forum

The use of environmental information in the planning process

Why do we use life cycle based information?

Manfred Huber, dipl. Arch. ETH SIA, CEO aardeplan ag

[email protected]

www.aardeplan.ch

02.12.2014

Folie Folie 02.12.2014 2

Content

1. Introducing aardeplan

2. LCA as basis of design

3. LCA in the planning process

4. LCA application possibilities

5. Consideration from materials to elements

6. Practical examples and hands-on experiences

7. Summary

Folie Folie 02.12.2014

1. Introducing aardeplan

3


Dipl. Arch. ETH

Member of various commissions of SIA

Lecturer for sustainability as well as planning and building processes

Architecture & Consulting

16 team members

Integrated concurrent engineering – from strategic planning to operation

Sustainability since beginning (1999)

Application of modern planning tools and methods (BIM/VDC)

aardeplan Architektur aardeplan Consulting


Source: aardeplan


2. LCA as basis of design


Needs of planners

Comparability of materials - selection material for masonry

- selection of timber products

- selection of insulation

Standardisation of payback periods for materials or elements respectively - supporting structure - cladding systems

- interior fittings

Calculation of environmental impact during life cycle - knowing the factors of influence to reduce embodied energy, greenhouse gases, points of environmental impact (UBP)


Possibilities for LCA data

Basis for calculation: - embodied energy

- greenhouse gases

- points of environmental impact

Comparability of materials and elements


Differentiated consideration of life cycle assessment data

primary energy non-renewable

greenhouse gases points of environmental impact (CH: UBP)


3. LCA in the planning process


Planning phase 1-2 (studies)

Evaluation: modernisation or new building

embodied energy apartment building: comparison of modernisation and new building

new building modernisation

embodied energy


Planning phase 1-2 (studies)

Evaluation: construction type of new buildings

Embodied energy in

MJ/m2a for construction for

reference object

„Hegianwandweg“ potential: ± 5%

source: Lignatec 25/2011

timber construction massive construction

Comparison construction type apartment building


6.3

11.6

14.7

0.0

5.0

10.0

15.0

20.0

AWopak

Window Window© aardeplan

13

Planning phase 3 (design)

Effect of façade design

e.g. embodied energy of windows or external wall

external wall: compact design

windows: frame timber-metal

windows: frame plastic

em

bo

die

d e

ne

rgy

Ep

nre

n:

kW

h/m

2a


Planning phase 4-5 (realisation)

5.50

2.40 2.10

1.80

1.00

0

1

2

3

4

5

6

Natursteinplatte

CH geschliffen

Keramikplatten PVC Parkettboden

versiegelt

Linoleum

em

bo

die

d e

ne

rgy

E

pn

ren k

Wh

/m2a

flooring

source: Aura Fotoagentur

© aardeplan

Effect interior fittings e.g. - embodied energy of flooring

- separability of flooring and supporting structure


Planning phase 6 (renewal)

60 - construction and supporting structure (C)

- roof construction (C)

- cladding external walls (E)

40 - sealings below ground level (E)

30 - HVAC components (D)

- windows (E)

- flat roofs (F)

- interior fittings (G)

20 - heat generation (D)

Jahre source: SIA MB 2032, www.bauteilkatalog.ch


4. LCA application possibilities


Proof of embodied energy and greenhouse gases

Proof for standards, labels, optimisations

greenhouse gases primary energy

non-renewable

Example apartment house: - requirement MuKEn 2008 - heat pump

MINERGIE-ECO

MINERGIE-A

SNBS

SIA Effizienzpfad Energie

SNBS

SIA Effizienzpfad Energie


Optimisation of environmental impact

For example insulation materials

for external walls:

80480

101700

120750

0

25000

50000

75000

100000

125000

EPS Steinwolle Foamglas

UBP/m3

© aardeplan

0.031 W/mK

0.034 W/mK

0.041 W/mK


Solutions of constructions

For example party wall

1.0

1.0

0.5

16.3

4.4

3.2 0.6

1.5

2.0

4.4

3.2

1.0

1.0

0.5

0.0 5.0 10.0 15.0 20.0 25.0 30.0

Betonwand d=28 cm

Kalksandstein Doppelschale2x12 cm KS

Holzständerwand tragend2x 3 Lagen Gipskarton

Innenputz/Abrieb

Betonwand

Kalksandstein

Gipskarton

Holzkonstruktion

Wärmedämmung

MJ/m2 © aardeplan

embodied energy

Timber frame, drywall

Sand-lime brick

Concrete wall


5. Consideration from materials to elements


LCA – from materials to elements

Lifespan: 60 years

Lifespan: 30 years

Rock wool: 90 kg/m3

Rock wool: 38 kg/m3

Rock wool:

UBP: 1130/kg

UBP: 143/m2a

UBP: 678/m2a

Dimension of insulation: 20cm

UBP insulation

UBP insulation


LCA – from materials to elements



LCA

Dependancy of processing

e.g. timber products

UBP: 1417/m2

UBP: 6063/m2

UBP: 13`400/m2

Solid wood

Spruce

not planed

Plywood board

spruce

Parquet

d=10mm

d=10mm

d=10mm


6. Practical examples and hands-on experiences


Factors of influence for optimisation ©

aard

epla

n

Interdependency

- embodied energy per element

- proportion element per floor space

- embodied energy per floor space


Hints out of experience

Optimisation of element to floor space ratio

Separation of systems

Utilisation of potential:

flat roofs (non accessible)

- construction: timber vs. concrete

- sealings

Avoidance of aluminium substructures

Huge differences between floorings


7. Summary


Summary

LCA – important basic principle to choose the right materials

LCA – materials have to be considered differentiated: Depending on field of application, function and amortisation

LCA – basis for proofs of embodied energy for various labels and standards Planners can consider the environmental impact of different materials

using life cycle assessment data.


Manfred Huber, dipl. Arch. ETH SIA, CEO aardeplan ag

aardeplan ag, Architekten ETH SIA, Baar

www.aardeplan.ch

Thank you for your attention! www.aardeplan.ch

manfred huber, dipl. arch. eth sia, ceo aardeplan ag … huber.pdf · 2014. 2. 12. · rock wool:...

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