2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference

Influence of the Connectors on the Resistance and Stiffness of Wood-Steel Hybrid Roof Diaphragm

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Mr. Simon Boucher, University of Sherbrooke (Presenter)
Dr. Charles-Philippe Lamarche, Université de Sherbrooke

During the past decade, the number of hybrid constructions has been growing rapidly. In many cases, there are no standards or design manuals to which design engineers can refer to. The construction industry is therefore pushing for a better understanding of the structural behaviour of building structures involving different types of materials. The main objective of this study is to determine the mechanical behaviour of hybrid steel diaphragms connected to wood members using a light gauge steel-deck. The study includes different types of connectors that can be used to join the two structural components (nails and screws). For each studied connector, the mechanical behaviour of the steel deck to wood member connection is experimentally characterized: failure modes, resistance, stiffness, and ease of installation. Four methods to determine the experimental elastic resistance and stiffness of connectors have been investigated. The design method proposed by the CSA O86-14 Standard for determining the connectors elastic resistance and stiffness has also been studied and compared to the experimental test result. Out of the many connectors that were tested, three connectors that perform well were identified.