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ASTM D 3957—06 Standard Practices for Establishing Stress Grades for Structural Members Used in Log Buildings (PDF Download)
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These practices cover the visual stress-grading principles applicable to structural wood members of nonrectangular shape, as typically used in log buildings. Both sawn lumber and round timber stress-grading methodologies are applied to two different types of structural members used in log buildings: wall-logs and round timber beams. The development of design stress values from clear wood strength values for wall-logs and round timber beams for used in log buildings is demonstrated in this standard. However, the grading provisions presented herein are not intended to establish grades for purchase, but rather to show how stress-grading principles are applied to members used in log buildings.
This standard is referenced in the 2012 International Building Code® and the International Residential Code®.
| Description: | These practices cover the visual stress-grading principles applicable to structural wood members of nonrectangular shape, as typically used in log buildings. Both sawn lumber and round timber stress-grading methodologies are applied to two different types of structural members used in log buildings: wall-logs and round timber beams. The development of design stress values from clear wood strength values for wall-logs and round timber beams for used in log buildings is demonstrated in this standard. However, the grading provisions presented herein are not intended to establish grades for purchase, but rather to show how stress-grading principles are applied to members used in log buildings. This standard is referenced in the 2012 International Building Code® and the International Residential Code®. |
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| Pages | 7 |
| Code Year | 2012 |
| Publisher | ASTM International |
| Language | English |