Tensile Strength of Composite Truss Lumber as Affected by Veneer Species and Member Width

摘要

One hundred and twenty pieces of composite truss lumber made with southern pine and yellow-poplar veneers of varying grades and in nominal widths from 2 x 4 to 2 x 10 were tested in tension. The modulus of elasticity (MOE) for both species was about 1.3 million psi. There were no differences in tensile strength between the yellow-poplar and the southern pine veneered composites. There was no difference in tensile strength due to width. Also, there was no consistent reduction in tensile strength of MOE due to using lower-grade veneers in one of the four piles of the composite.