Council advances CLT grading amendment after APA raises standards concerns
A proponent argued the CLT amendment would let Washington manufacturers use mechanically graded lumber from underutilized species; the APA warned the change could diverge from existing standards and affect fire and acoustic ratings. The council advanced the item toward a CR103 draft after supporters said technical revisions addressed key points.
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A proponent introduced a proposal to permit mechanically graded lumber as an input to cross-laminated timber (CLT), saying the change would help Washington manufacturers use underutilized species and broaden local production. The proponent told the council the amendment "originated actually from Washington State University" and said the proposal is intended "in defense of Washington manufacturers," arguing mechanical grading would allow otherwise unused species to be incorporated into CLT production.
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