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Title: Seasoning and surfacing degrade in kiln-drying ponderosa pine in eastern Washington.
Author: Knauss, A.C.; Clarke, E.H.;
Source: PNW Old Series Research Note No. 205, p. 1-12
Publication Series: Miscellaneous Publication
Description: This report presents results of a study to determine the degrade (loss in volume and value) of ponderosa pine lumber when cut, kiln-dried, and surfaced in accordance with commercial practice. The study measured (1) loss in volume due to culling and trimming surfaced dry lumber because of sawing, seasoning, and surfacing defects; (2) reduction in grade due to seasoning and surfacing defects; and (3) reduction in grade due to incomplete manufacture or the development of manufacturing defects. Degrade is expressed as a percentage of the rough green lumber volume and also as a loss in value per thousand board feet of lumber.
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Knauss, A.C.; Clarke, E.H. 1961. Seasoning and surfacing degrade in kiln-drying ponderosa pine in eastern Washington. PNW Old Series Research Note No. 205, p. 1-12
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