Timber‑industry engineers press SBCC to keep 2024 IBC CLT thicknesses and avoid a state rollback
Engineers and standards representatives told the council a proposed Washington amendment would undercut corrected 2024 IBC requirements for CLT heavy‑timber thickness and requested the state adopt the 2024 model code language and PRD320 updates rather than a relaxation of MSR requirements.
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Multiple technical witnesses told the council that proposed Washington amendments could reverse a corrective change in the 2024 International Building Code and weaken fire and structural safety requirements for cross‑laminated timber (CLT).
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