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Title: Lumber yield and log values of Shasta red fir.

Author: Grantham, John B.; Hunt, Douglas L.;

Date: 1963

Source: Res. Pap. PNW-RP-002. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 30 p

Publication Series: Research Paper (RP)

Description: The value of lumber produced from each of 362 Shasta red fir logs of southern Oregon was determined through a cooperative study in 1960.

Lumber grade yield from each log provided the basis for calculating the comparative value of each log grade-log diameter class, in accordance with grading and scaling practices used both east and west of the Cascade Range.

The results, which are summarized graphically in figure 1, should be useful to sellers, buyers, and processors of Shasta red fir logs. The effect on log value of (1) log diameter, (2) log grade, as determined by two systems, and (3) log scaling, as applied in two systems, should be useful in predicting the lumber output and value of the species, providing the variability between individual logs is recognized. The variability in log value is indicated by including scatter diagrams with the grade-yield and value curves for lumber.

Despite the variability that occurs between individual logs, the results of this study should provide a measure of the expected value spread between log grades and log diameter classes. Refinements in log grading systems, changes in scaling practices, or changes in utilization standards will alter the comparative values developed in this study. As an initial analysis, however, this study provides a basis to evaluate product-yield data that may be developed in future studies of Shasta red fir. For example, a firm could find it helpful to compare its lumber output from a given mix of log grades and sizes with the yield that would be predicted from results of this study.

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Grantham, John B.; Hunt, Douglas L. 1963. Lumber yield and log values of Shasta red fir. Res. Pap. PNW-RP-002. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 30 p


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