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.
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Advice
Costs can easily inflate for MEP (mechanical, electrical, plumbing). Contractors go to suppliers for pricing, suppliers add contingency costs, contractors add their own contingency, and the cost can inflate enough to kill the project.
Advice
Mass panel installation advice: — Full scale mockup is a benefit, allows best practices to be developed and solutions identified prior to construction. — “Install prefab guardrail systems between columns on the perimeter and pre-determine tie-off points for worker safety” — Manufacturers need to clearly identify and locate balanced panel lifting points. — Pre plan and optimize truck load stacks, delivery schedules and erection sequencing
Advice
Peel and stick membranes on CLT panels is inadequate for inclement weather. The best solution is to erect rapidly and install building envelope ASAP.
Advice
“Constant and frequent communication” encouraged all to take ownership of project and actively contribute.
Advice
Tolerance discrepancies are +/- 24 mm for concrete and +/- 3 mm for wood).
Advice
Use concrete-to wood anchor systems that allow vertical and horizontal adjustment. Threaded rods and supporting nuts are used in combination with a base plate and grout to correct elevation discrepancies.
Advice
Timber installer must ensure precise location of vertical wood members on first level to prevent cumulative errors.
Advice
Use protective wrapping during transportation and installation, and use “just in time” delivery that minimizes weather exposure.
Advice
Handle [mass timber] structural elements with care to avoid damage and discolouration from moisture.
Advice
Install connectors prior to being on site.
Advice
On-site vs off-site fabrication: there can be problems either way.
Image c/o: StructureCraft
Advice
Drill holes in the floors for electrical wiring to pass through and treat the hole to resist fire. Use a mechanical shaft (for example, the garbage disposal chute) to bring electrical wiring together and reduce the amount of work.
Advice
Steel connectors should be the responsibility of the same party that owns the timber manufacturing scope. They should be modelled at the same time, resulting in the purchase of the correct parts.