A total of 32 cross-laminated timber (CLT) shear walls were tested in the UNBC Wood Innovation and Research Laboratory in Prince George, BC.
7-ply CLT panels in two aspect ratios 2.5:1 and 3.5:1 were used. Single-panel and coupled panel configurations were tested. In the 2.5:1 aspect ratio panels, the number of shear brackets was varied between two and one. Surface mounted D-Fir plywood splines, attached with three different nail spacings, connected the coupled panels. The nailing pattern of the hold-downs was varied between 100% and 50%. A constant dead load of either 20kN/m or 30kN/m was applied. Quasi-static monotonic pushover and reversed cyclic tests were conducted.
The shear wall performance was a function of the tested parameters: aspect ratio, number of shear brackets, nail spacing in spline, nailing pattern in hold-down and superimposed dead load. The test report only presents the shear wall load carrying capacity (Fmax) and the corresponding panel displacement (dFmax). Any further analyses of the data was beyond the scope of this testing project.