Design guidance for carpentry-type timber joints

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Although the benefits of using timber in mid- and high-rise construction are undisputed, there are perceived**shortcomings with respect to the corresponding lack of appropriate design guidance. Overcoming these**perceived shortcomings will allow timber, and its wood product derivatives, to further expand into the**non-residential construction sector.**Mass timber and timber hybrid construction is gaining popularity in modern building construction and**engineering best practices are trying to keep up. While there are many new engineered connectors making their**way to market, some traditional carpentry joints are still cost-effective solutions. One of the more common**connections is a secondary timber beam to a primary timber beam or ledger that is "housed" into the primary**member to create a bearing seat for direct load transfer either through a square mortise or a rounded dovetail.**Such joints have many centuries of performance in buildings, but lack a reliable, modern design basis**congruent with the level of safety and reliability expected of current design standards and building codes.**The company-specific problem that will be addressed is the provision of design guidance for such square or**rounded housing joints, establishing a direct link between the material properties and member dimensions and**the connection performance in terms of strength and stiffness. At the project conclusion, the company will have**a better understanding of how to efficiently and safely design these types of traditional carpentry-type joints.