Computer Programs for Adjusting the Mechanical Properties of 2-Inch Dimension Lumber for Changes in Moisture Content

This paper presents computer programs for adjusting the mechanical properties of 2-in. dimension lumber for changes in moisture content. Mechanical properties adjusted are modulus of rupture, ultimate tensile stress parallel to the grain, ultimate compressive stress parallel to the gain, and flexural modulus of elasticity. The models are valid for moisture contents from 8 to. 23 percent (assumed green value). Although test results can be adjusted for moisture content, such adjustments decrease in accuracy with increasing change in moisture content. For this reason, the specimens should be conditioned as closely as possible to the target moisture content prior to test