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Advice
Specs should request written description of moisture protection protocol (submitted prior to CLT delivery), describing protection implementation plan for each stage: — delivery — storage — installation (roof & floor panels) — after installation (walls) — ongoing moisture protection measures until exterior envelope is watertight — remedial measures for panels damaged and/or stained during installation
Advice
Architectural specs must outline the methodology and responsibility of MEP (mechanical, electrical, plumbing) coordination and modelling.
Advice
It is advantageous for the architect to have experience with CLT (but not as critical as for the structural engineer).
Advice
The structural engineer must have experience with CLT: this is vital to project success.
Advice
The project must have comprehensive architectural and structural specs. Assume the proponents have no experience, which will ensure that everything is spelled out.
Advice
Timely delivery of CLT from the manufacturer has been an issue, but this is improving. CLT does provide opportunities in BC for local manufacture.
Advice
Cost reductions are realized with CLT design due to R value in roof and wall assemblies.
Advice
Cost of CLT is approximately equal to steel (or better if steel tariffs are in place).
Advice
Spec a target tolerance. Contractually this is difficult to hold to, but provides a method to explain the importance of the allowable tolerance.
Advice
Building with repeated layouts will bring more prefabrication opportunities.
Advice
Use simplified floor plans with stacked units.
Advice
Engage the “authority having jurisdiction” early to ensure timely approval.
Advice
“Constant and frequent communication” encouraged all to take ownership of project and actively contribute.
Advice
Early discussions should involve all parties: installer, manufacturer, architect, engineer, owner/developer. Design with the people who will build the project, from fabrication to installation.
