ASTM D7341
Scope
1.1 This practice describes procedures for full scale testing of structural glued laminated timber (glulam) to determine or verify characteristic values
used to calculate flexural design properties. Guidelines are given for: (1) testing individual structural
glued laminated timber lay-ups (with no modeling), (2) testing individual glulam combinations (with limited
modeling), and (3) validating models used to predict characteristic values.
1.2 This practice is limited to procedures for establishing flexural properties (Modulus of Rupture, MOR, and Modulus of Elasticity, MOE). Some of the
principles for sampling and analysis presented may be applicable to other properties. However, other properties may require additional testing considerations that are beyond the scope of this
practice.
1.3 This practice is not intended to supersede the provisions of Practice D3737, but provides an alternative method
for establishing characteristic values. Lay-up combinations developed in accordance with Practice D3737 are not required to be governed by this standard.
Note 1: The models described by Practice D3737 have been
developed and modified based on more than 50 years of experience and many test programs. In some cases, however, it may be desirable to develop a new model based on other input properties or
using lumber materials or grades not covered by that standard.
1.4 Details of production, inspection, and certification are beyond the scope of this document. However, for test results to be representative of
production, quality control systems shall be in place to ensure consistent quality. Manufacturing shall conform to recognized manufacturing standards such as ANSI A190.1 or CSA O122.
1.5 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on
Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Keywords
bending; characteristic value; flexural; flexure; full-scale; glulam; laminated; lay-up; modulus; timber;
ICS Code
ICS Number Code 79.060.99 (Other wood-based panels)
DOI: 10.1520/D7341-21