Bending properties of wooden crossarms

摘要

This report summarizes our comparison of the bending strength of two common sizes of utility crossarms from two species of wood, southern pine (Pinus spp.) and Douglas-fir (Pseudotsuga menziesii). Data from the testing of mill-run crossarms showed that the southern pine crossarms were usually equivalent to or in a few cases higher in strength than those of Douglas-fir.