Production and Performance of Yellow-poplar CLT: Part I
Abstract
The present article explores the potential of hardwood lumber as a raw material for cross-laminated timber (CLT) production, addressing raw material diversity in mass timber construction. The authors demonstrate the commercial feasibility of manufacturing hardwood CLT panels using yellow-poplar lumber according to ANSI/APA PRG 320 standards using current sawmill setups and their mechanical performance. All panels were manufactured and tested following the ANSI/APA PRG 320 standards, and the data was provided for petitioning the inclusion of hardwood CLTs in the ANSI/APA PRG 320 for yellow-poplar lumber. Comparative analysis indicates significantly higher (1.22 to 13.33 times) strength values for 3-ply and 7-ply CLT than theoretical values obtained from the PRG 320 based standard shear analogy model. The results of this work provide a basis for the utilization of yellow poplar CLTs as a sustainable building material, thus potentially opening the door for new markets for underutilized hardwood species.
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