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    ASTM D3737 - 12

    Standard Practice for Establishing Allowable Properties for Structural Glued Laminated Timber (Glulam)

    Active Standard ASTM D3737 | Developed by Subcommittee: D07.02

    Book of Standards Volume: 04.10

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    Abstract

    This practice details the standard procedures for establishing the allowable properties for structural glued laminated timber (glulam). Allowable properties include: stress indexes; stress modification factors associated with slop of grain; stresses for bending, tension and compression parallel to the grain; horizontal shear; compression perpendicular to the grain; radial tension and compression stresses in curved members; grade adjustment factors; modulus of elasticity; and modulus of rigidity. 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. It does not cover the requirements for production, inspection and certification, but in order to justify the allowable properties developed using procedures in this practice, manufacturers must conform to recognized manufacturing standards.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    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/AITC 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 and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    Other Standards

    CSA O122 Structural Glued Laminated Timber Available from Canadian Standards Association (CSA), 5060 Spectrum Way, Mississauga, ON L4W 5N6, Canada, http://www.csa.ca.

    ASTM Standards

    D9 Terminology Relating to Wood and Wood-Based Products

    D143 Test Methods for Small Clear Specimens of Timber

    D198 Test Methods of Static Tests of Lumber in Structural Sizes

    D245 Practice for Establishing Structural Grades and Related Allowable Properties for Visually Graded Lumber

    D2395 Test Methods for Specific Gravity of Wood and Wood-Based Materials

    D2555 Practice for Establishing Clear Wood Strength Values

    D2915 Practice for Sampling and Data-Analysis for Structural Wood and Wood-Based Products

    D4761 Test Methods for Mechanical Properties of Lumber and Wood-Base Structural Material

    D5456 Specification for Evaluation of Structural Composite Lumber Products

    D6570 Practice for Assigning Allowable Properties for Mechanically Graded Lumber

    E105 Practice for Probability Sampling of Materials

    ICS Code

    ICS Number Code 79.060.01 (Wood-based panels in general)

    UNSPSC Code

    UNSPSC Code

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D3737-12

    Citation Format

    ASTM D3737-12, Standard Practice for Establishing Allowable Properties for Structural Glued Laminated Timber (Glulam), ASTM International, West Conshohocken, PA, 2012, www.astm.org

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