CLT HYBRID OPPORTUNITIES WITH MASS TIMBER
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
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+
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.
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
CLT Case study
1 2 3
Sheet rock lid with RC 2 Plywood LFRS (Shear Walls) 3 Cross laminated timber 1 hour rated floor slab - no additional finish required 1
CLT Case study
Approx 8.5% overall hardcost
Approx 11.5% overall hardcost
COST IMPACTS As a superstructure, the hybrid system is more costly than a comparable wood framed structure. However, it also has the potential to reduce the scope of other trades, resulting in an overall reduction in cost. In the Cadence 21 case study, for example, a costly concrete transfer level was removed and replaced with a 9 ply CLT member. Other potential cost savings include reduction in construction schedule and reduction in on-site labor needed for assemblage.
CLT Case study
Seattle
Los Angeles
1301 First Avenue, Suite 301
4218 Glencoe Avenue, Suite 1
Seattle, Washington 98101
Marina Del Rey, California 90292