ASTM D4761 - 13

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

    Active Standard ASTM D4761 | Developed by Subcommittee: D07.01

    Book of Standards Volume: 04.10

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    Significance and Use

    4.1 These test methods provide procedures that are applicable under true field conditions, such as in a plant with specimens not at moisture equilibrium.

    4.2 The data established by these test methods can be used as follows:

    4.2.1 Develop strength and stiffness properties for the population represented by the material being tested (that is, individual grades, grade combinations, species, species groups, or any other defined, identifiable sample).

    4.2.2 Confirm the validity of strength and stiffness properties for the population represented by the material being tested.

    4.2.3 Investigate the effect of parameters that may influence the strength and stiffness properties of the material, such as moisture content, temperature, knot size and location, or slope of grain.

    4.3 The procedures chosen in accordance with these test methods shall be fully documented in the report to facilitate correlation with test results obtained through the use of traditional procedures, such as those set forth in Test Methods D198.

    1. Scope

    1.1 These test methods cover the determination of the mechanical properties of stress-graded lumber and other wood-base structural material.

    1.2 These test methods appear in the following order:



    Bending edge-wise


    Bending flat-wise:


     Center point loading


     Third point loading


    Axial strength in tension


    Axial strength in compression


    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.

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

    ASTM Standards

    D9 Terminology Relating to Wood and Wood-Based Products

    D198 Test Methods of Static Tests of Lumber in Structural Sizes

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

    D4442 Test Methods for Direct Moisture Content Measurement of Wood and Wood-Base Materials

    D7438 Practice for Field Calibration and Application of Hand-Held Moisture Meters

    E4 Practices for Force Verification of Testing Machines

    E6 Terminology Relating to Methods of Mechanical Testing

    E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

    Other Document

    NISTVoluntaryProduct American Softwood Lumber Standard

    ICS Code

    ICS Number Code 79.040 (Wood, sawlogs and sawn timber); 79.060.01 (Wood-based panels in general)

    UNSPSC Code

    UNSPSC Code 30266300(Wood structural materials)

    DOI: 10.1520/D4761-13

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