Effects of rate of loading and moisture on dowel bearing strength of jack pine
Abstract
The dowel bearing strength (embedding strength), along with the connection geometry is one of the main parameters used for calculation of the dowel-type connection resistance. This research was focused on the effects of three moisture contents and seven rates of loading on the embedding strength of jack pine (Pinus banksiana) wood. The loss of resistance with increasing time to failure was compared to empirical equations found from past research. Test results were correlated to the adjustment factors used in the Canadian (CSA O86) and European (EN 1995) timber design codes. The strength adjustments in the CSA O86 were found satisfactory whereas those in Eurocode 5 appeared non-conservative.
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