Northern Research Station

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

Author: Rast, Everette D.; Beaton, John A.; Sonderman, David L.

Date: 1989

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

Station ID: RP-NE-628

Description: 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

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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..