Publication Date
2023
Abstract
Seismic design of cold-formed steel shear walls is constantly evolving due to ever-growing interest in the CFS systems in high seismic zones. Cementitious panels used as sheathing for CFS shear walls and diaphragms can achieve superior strength capacity and fire resistance and are thus increasingly popular in light-framed construction. This study aims to assess the impact of six various edge distances on the performance of CFS studs sheathed with fiber cement boards subjected to cyclic loads. In this report, the results of the 108 specimens are investigated. The experimental specimens are designed to represent a slice of a shear wall and contain two studs sheathed on both sides with two panels. Eight fasteners connect the panels to the studs. Steel thickness, fastener type and fastener edge distance are varied to determine the performance of the connections. In total, 108 specimens are tested via the FEMA 461 cyclic protocol, representing a large suite of experimental data for these connection types. Population statistics are performed on the data to quantify inherent variability in these screws fastened connections. Results will inform national design specifications and provide underlying data to enable design of CFS shear walls and diaphragms sheathed with fiber cement boards.