Demonstrates enhanced shear resistance in point-supported CLT floors, suggesting improved structural integrity.
Cross-laminated timber (CLT) can provide two-way span resistance in point-supported floors where the panels are directly supported by columns. Such applications provide increased ceiling height with flat soffits allowing easier routing for installations and flexibility in room layout. Although analytical models have been proposed to calculate the punching shear resistance of CLT, there is still a need for a systematic method for using those models to estimate the resistance of point-supported CLT floor systems. In this paper, a novel design method for point-supported CLT floors is proposed, independent of numerical modeling. The total punching shear resistance is estimated based on the total column perimeter supporting the floor, the geometric and material properties of the CLT panels, and floor boundary/loading conditions. The proposed method is experimentally validated with 9 full-scale, two-span, point-supported CLT floors having different column conditions as well as 19 full-scale floor test results from previous studies. The punching shear resistance predictions of the point-support system using the newly proposed methodology show very good agreement with the test results.
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Ganjali et al. (2026) studied this question.
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