Photographic guide of selected external defect indicators and associated internal defects in white oak

Everette D. Rast; John A. Beaton; David L. Sonderman; David L. Sonderman

doi:10.2737/NE-RP-628

Treesearch

Photographic guide of selected external defect indicators and associated internal defects in white oak

Informally Refereed

Authors:

Everette D. Rast, John A. Beaton, David L. Sonderman, David L. Sonderman

Year:

1989

Type:

Research Paper

Station:

Northern Research Station

DOI:

https://doi.org/10.2737/NE-RP-628

Source:

Res. Pap. NE-628 Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 24 p.

Download (PDF 6.98 MB)

Download (PDF 6.98 MB): https://research.fs.usda.gov/download/treesearch/21819.pdf

Abstract

To properly classify or grade logs or trees, one must be able to correctly identify defect indicators and assess the effect of the underlying defect on possible end products. This guide assists the individual in identifying the surface defect indicator and also shows the progressive stages of the defect throughout its development for white oak. It illustrates and describes nine types of external defect indicators and associated defects that are particularly difficult to evaluate.

Keywords

defect identification, photo guide, white oak, quality assessment

Citation

Rast, Everette D.; Beaton, John A.; Sonderman, David L. 1989. Photographic guide of selected external defect indicators and associated internal defects in white oak. Res. Pap. NE-628 Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 24 p.