WWW Computer Program for
Calculating Strength Ratios from
Failure Codes in ASTM D4761, Table X1.1.
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.
Download Fortran Source Code
For further information on this program for calculating strength
ratios from failure codes, contact James Evans or call him at
For problems with this web page, please contact
or (608) 231-9236.
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Last modified on 12/00.
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