Properties of lumber products

Roland Hernandez; David W. Green

Treesearch

Properties of lumber products

Informally Refereed

Authors:

Roland Hernandez, David W. Green

Year:

2007

Type:

Miscellaneous Publication

Station:

Forest Products Laboratory

Source:

Marks' standard handbook for mechanical engineers. New York ; London : McGraw-Hill, c2007: pages 6.121-6.127.

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Download (PDF 396 KB): https://research.fs.usda.gov/download/treesearch/34299.pdf

Abstract

Stress-graded structural lumber is produced under two systems: visual grading and machine grading. Visual structural grading is the oldest stress grading system. It is based on the premise that the mechanical properties of lumber differ from those of clear wood because many growth characteristics of lumber affect its properties: these characteristics can be seen and judged by eye (ASTM D 245). The principal growth feature affecting lumber properties are the size and location of knots, sloping grain, and density.

Keywords

Grading, lumber, mechanical properties, wood, wood quality, wood density, shear, wood properties, strength, visual grading, knots, bending strength, tensile strength, compression parallel to grain, mechanical grading, softwoods, shrinkage

Citation

Hernandez, Roland; Green, David W. 2007. Properties of lumber products. Marks' standard handbook for mechanical engineers. New York ; London : McGraw-Hill, c2007: pages 6.121-6.127.