This program calculates strength ratios from failure codes in ASTM D 4761 Table X1.1. These codes are of the form 'XX-YY', where XX is a 2-digit code showing the characteristic associated with a failure and YY is a 2-digit code describing the extent of the characteristic. Some examples are: 15-08 is a 1/2 inch wide face knot, center line encased. 51-12 is slope of grain 1 inch for every 12 inches. See ASTM D 4761 Table X1.1 for a complete list of failure codes.

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For further information on this program for calculating strength ratios from failure codes, contact James Evans or call him at (608) 231-9332.

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Last modified on 12/00.

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