Lateral Load-Carrying Connection Properties and Withdrawal Capacity of Hybrid Poplar


  • Arijit Sinha
  • Diana G. Avila


Yield models, oriented strandboard, dowel bearing strength, laminated products, National Design Specification


An experimental study is reported aimed at determining the yield load, withdrawal capacity, and validity of National Design Specification (NDS) yield models on connections between hybrid poplar and common sheathing materials using a dowel-type fastener. Plantation-grown hybrid poplar (Pacific Albus) was procured, and connections with two different thicknesses of oriented strandboard and plywood were constructed using a dowel-type fastener. The NDS does not list connection design values for low-density wood species. Therefore, it was important to validate the NDS yield model equations for applicability toward a low-density species such as hybrid poplar. The results quantify the lateral load-carrying and withdrawal capacities of hybrid poplar. Also, the prediction using NDS yield models consistently matched the observed yield loads and yield modes for all the sheathing types used in this study. The data suggest that the NDS yield model is an adequate tool for connection design even for low-density species, provided knowledge of dowel-bearing capacity of the hybrid poplar is known.


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Research Contributions