1.1 This practice covers the procedures for establishing allowable properties for structural glued laminated timber. Included are the allowable stresses for bending, tension and compression parallel to the grain, horizontal shear, compression perpendicular to the grain, and radial tension and compression in curved members. Also included are modulus of elasticity and modulus of rigidity.
1.2 This practice is limited to the calculation of allowable properties subject to the given procedures for the selection and arrangement of grades of lumber of the species considered.
1.3 Requirements for production, inspection and certification are not included, but in order to justify the allowable properties developed using procedures in this practice, manufacturers must conform to recognized manufacturing standards. Refer to ANSI A190.1 and CSA O122.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 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.
1.6 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.
ASTM D3737-18e1 Referenced Document
ANSI A190.1 Standard for wood products - Structural Glued Laminated Timber*, 2024-04-22 Update
ASTM D143 Standard Test Methods for Small Clear Specimens of Timber
ASTM D198 Standard Test Methods of Static Tests of Lumber in Structural Sizes
ASTM D2395 Standard Test Methods for Specific Gravity of Wood and Wood-Based Materials
ASTM D245 Standard Practice for Establishing Structural Grades and Related Allowable Properties for Visually Graded Lumber*, 2022-02-01 Update
ASTM D2555 Standard Test Methods for Establishing Clear Wood Strength Values
ASTM D2915 Standard Practice for Evaluating Allowable Properties for Grades of Structural Lumber
ASTM D4761 Standard Test Methods for Mechanical Properties of Lumber and Wood-Based Structural Materials*, 2019-04-01 Update
ASTM D5456 Standard Specification for Evaluation of Structural Composite Lumber Products
ASTM D6570 Standard Practice for Assigning Allowable Properties for Mechanically Graded Lumber*, 2018-10-01 Update