Computer programs for adjusting the mechanical properties of 2-inch dimension lumber for changes in moisture content

James W. Evans; Jane K. Evans; David W. Green

doi:10.2737/FPL-GTR-63

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Computer programs for adjusting the mechanical properties of 2-inch dimension lumber for changes in moisture content

Informally Refereed

Authors:

James W. Evans, Jane K. Evans, David W. Green

Year:

1990

Type:

General Technical Report

Station:

Forest Products Laboratory

DOI:

https://doi.org/10.2737/FPL-GTR-63

Source:

Gen. Tech. Rep, FPL-GTR-63. Madison, WI: U.S. Department of Agriculture, Forest Service; Forest Products Laboratory. 18 p.

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Download (PDF 343 KB): https://research.fs.usda.gov/download/treesearch/9657.pdf

Abstract

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.

Keywords

Computer program, moisture content, mechanical properties, lumber

Citation

Evans, James W.; Evans, Jane K.; Green, David W. 1990. Computer programs for adjusting the mechanical properties of 2-inch dimension lumber for changes in moisture content. Gen. Tech. Rep, FPL-GTR-63. Madison, WI: U.S. Department of Agriculture, Forest Service; Forest Products Laboratory. 18 p.