CLT HYBRID URBAN SETTLEMENTS AND WOOD TECHNOLOGY
clt hyrbid | towards a biogenic city
Harvest
• Carbon Sequestration Potential • Renewable and low impact
Manufacture
• Rural economy activation • Regenerative supply chain
Build
• High performance structural properties • Immersive biophillic wood environments
Live
• Dense livable cities • Improving qualities of built environment while carbonbanking
sustainibility “Using wood reduces the carbon footprint of buildings in two key ways—through carbon storage and avoided greenhouse gas emissions.” Wood Products Council
clt hyrbid | towards a biogenic city
FEASIBILITY For housing, wood is often the structure of choice for cost reasons. Mass timber elements add an additional measure of performance and design opportunities to the wood technology toolkit.
biophilia Wood has scientifically- proven biophilic attributes that greatly benefit living environments.
BUILDING TYPOLOGIES WITH WOOD Under current CBC and IBC codes, there are a variety of building typologies that can utilize wood for R2 occupancies, and mass timber can be utilized in all of them. As cities densify, these typologies have the potential to deliver cost effective and sustainable solutions with compelling design attributes.
clt hyrbid | towards a biogenic city
FAR 1.25 FAR 2.0
FAR 3.25
FAR 4.75
FAR 6.0
FAR 7.0+
CLT Case study
2
1
Plywood LFRS (Shear Walls) 2 5 ply Cross Laminated Timber floor system 3 Conventional floor framing 1
3
CLT Case study
1 2 3
Engineered wood truss 2 Sheet rock lid with RC channel 3 Cross laminated timber 1 hour rated floor slab - no additional finish required 1
1,750,000kg 14%
1,500,000kg 1%
1,250,000kg 8%
1,000,000kg 2%
750,000kg
500,000kg 74%
250,000kg 0kg
Mass (kg)
Global Warming Potential (kgCO2eq)
CONCRETE
MASS- 128,264 lb CARBON - 46,000 lbCO2eq Per Unit - For 30 Unit Case Study
For 30 Unit Case Study
Environmental Impacts / Area
Eutrophication (kgNeq/m²)0
“Global development uses more than 40 billion tons of sand and gravel every year. There’s so much demand that riverbeds and beaches around the world are being stripped bare.”
Product Stage [A1-A3]
Use Stage [B2-B4, B6]
End of Life Stage [C2-C4, D]
0.9612
0.02412
0.3037
0.08874
.05207
0.002196
0.03918
0.02092
224.74 Ozone Depletion (CFC-11eq/m²)1
Construction Stage [A4-A5]
.967
76.25
24.71
.720E-006
4.256E-011
8.244E-008
-6.552E-007 0.8953
12.80
0.7626
4.371
Primary Energy (MJ/m²)3
,088
71.04
1,454
-117
Non-renewable Energy (MJ/m²)2
,354
70.39
1,298
8.214
734.11
.102
156.0-
126
Renewable Energy (MJ/m²)
1,750,000kg
1,500,000kg 19%
1,250,000kg
1,000,000kg
44%
750,000kg
20%
500,000kg 2%
250,000kg 0kg
12%
Mass (kg)
3%
Global Warming Potential (kgCO2eq)
WOOD
MASS - 64,658 lb CARBON - 31,995 lbCO2eq Per Unit - For 30 Unit Case Study
For 30 Unit Case Study
Environmental Impacts / Area
Eutrophication (kgNeq/m²)0
Product Stage [A1-A3]
Use Stage [B2-B4, B6]
End of Life Stage [C2-C4, D]
1.741
0.02834
0.2107
0.1218
.06997
0.002581
0.02589
0.02652
.836
44.80
26.62
.943E-006
5.001E-011
8.029E-008
-6.509E-007
22.95
0.8961
2.924
2.118
398.15 Ozone Depletion (CFC-11eq/m²)3
Construction Stage [A4-A5]
Primary Energy (MJ/m²)3
,739
83.48
820.4
269.5
Non-renewable Energy (MJ/m²)3
,291
82.72
692.3
325.1
447.51
.294
128.2-
55.6
Renewable Energy (MJ/m²)
LEGEND 03 - Concrete 05 - Metals
06 - Wood/Plastics/Composites
07 - Thermal and Moisture Protection 08 - Openings and Glazing 09 - Finishes
Seattle
Los Angeles
1301 First Avenue, Suite 301
4218 Glencoe Avenue, Suite 1
Seattle, Washington 98101
Marina Del Rey, California 90292