Saltar navegación principal
Normas ASTM – AENOR
ASTM D3957-90(1996)e1

ASTM D3957-90(1996)e1

Standard Practices for Establishing Stress Grades for Structural Members Used in Log Buildings

Fecha:
2021-02-18 /Historical
Superseeded by:
Scope:

1.1 These practices cover the visual stress-grading principles applicable to structural wood members of nonrectangu- lar shape, as typically used in log buildings. These practices are meant to supplement the ASTM standards listed below, which cover stress-grading of sawn lumber and round timbers. Pieces covered by these practices may also be used in building types other than log buildings.

1.2 The grading provisions used as illustrations 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. Detailed grading rules for commercial stress grades which serve as purchase specifications are established and published by agencies that formulate and maintain such rules and operate inspection facilities covering the various species.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords:
Grading;emwood products; Log buildings; Lumber; Round timber beams; Shear testing;emwood products; Strength values (wood); Stress grading;emtimber; Structural wood products; Timber; Visual grading (of lumber); Wall logs; Wood products;emstructural; establishing stress grades for structural members used in log building,; practice,;<sfig id=00000000>Order Form</sfig>
51,52
Idioma Formato

Formato físico y digital

Nota: Precios sin IVA ni gastos de envío

Añadir a la cesta