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This white paper summarizes the on-going testing campaign being performed at the University of British Columbia on the pull-out resistance of ASSY screws when applied in end-grain. Of particular interest, this research will investigate the possible influence on withdrawal capacity that variations in the moisture content of the timber specimen can have in addition to applying these in end-grain. As most pre-engineered connection systems that utilize ASSY screws utilize end-grain application, the results obtained during this test campaign are of significant relevance. They will not only provide a broader look into the behaviour of screws applied in end-grain, but the possible influence that variations of moisture content can have on their withdrawal capacity.


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