57 th 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
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
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
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1. Introducing aardeplan
3
Folie Folie 02.12.2014 4
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
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Source: aardeplan
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2. LCA as basis of design
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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)
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Possibilities for LCA data
Basis for calculation: - embodied energy
- greenhouse gases
- points of environmental impact
Comparability of materials and elements
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Differentiated consideration of life cycle assessment data
primary energy non-renewable
greenhouse gases points of environmental impact (CH: UBP)
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3. LCA in the planning process
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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
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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
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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
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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
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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
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4. LCA application possibilities
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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
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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
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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
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5. Consideration from materials to elements
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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
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LCA – from materials to elements
source: Aura Fotoagentur
source: Aura Fotoagentur
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
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6. Practical examples and hands-on experiences
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Factors of influence for optimisation ©
aard
epla
n
Interdependency
- embodied energy per element
- proportion element per floor space
- embodied energy per floor space
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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
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7. Summary
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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.
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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