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Caring for the land and serving people
United States Department of Agriculture
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Photographic guide of selected external defect indicators and associated internal defects in white oak
Author(s): Everette D. Rast; John A. Beaton; David L. Sonderman; David L. Sonderman
Date: 1989
Source: Res. Pap. NE-628 Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 24 p.
Publication Series: Research Paper (RP)
Station: Northeastern Research Station
PDF: Download Publication (6.65 MB)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.Publication Notes
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, shobrla@fs.fed.us if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
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.Keywords
defect identification, photo guide, white oak, quality assessmentRelated Search
- Predicting internal white oak (Quercus alba) log defect features using surface defect indicator measurements
- Defect reduction in low-value white oak lumber using restrained drying
- Survival of Quercus alba (White Oak) advance reproduction in small group and single tree openings.
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https://www.fs.usda.gov/treesearch/pubs/21819