ASTM D143-94(2000)e1

    Standard Test Methods for Small Clear Specimens of Timber


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    1. Scope

    1.1 These methods cover the determination of various strength and related properties of wood by testing small clear specimens.

    1.1.1 These methods represent procedures for evaluating the different mechanical and physical properties, controlling factors such as specimen size, moisture content, temperature, and rate of loading.

    1.1.2 Sampling and collection of material is discussed in Practice D5536. Sample data, computation sheets, and cards have been incorporated, which were of assistance to the investigator in systematizing records.

    1.1.3 The values stated in inch-pound units are to be regarded as the standard. The SI values are given in parentheses and are provided for information only. When a weight is prescribed, the basic inch-pound unit of weight (lbf) and the basic SI unit of mass (Kg) are cited.

    1.2 The procedures for the various tests appear in the following order:

    Sections
    Photographs of Specimens5
    Control of Moisture Content and Temperature6
    Record of Heartwood and Sapwood7
    Static Bending8
    Compression Parallel to Grain9
    Impact Bending10
    Toughness11
    Compression Perpendicular to Grain12
    Hardness13
    Shear Parallel to Grain14
    Cleavage15
    Tension Parallel to Grain16
    Tension Perpendicular to Grain17
    Nail Withdrawal18
    Specific Gravity and Shrinkage in Volume19
    Radial and Tangential Shrinkage20
    Moisture Determination21
    Permissible Variations22
    Calibration23

    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

    D198 Test Methods of Static Tests of Lumber in Structural Sizes

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

    D3043 Test Methods for Structural Panels in Flexure

    D3500 Test Methods for Structural Panels in Tension

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

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

    D5536 Practice for Sampling Forest Trees for Determination of Clear Wood Properties

    E4 Practices for Force Verification of Testing Machines

    E2309 Practices for Verification of Displacement Measuring Systems and Devices Used in Material Testing Machines


    ICS Code

    ICS Number Code 79.040 (Wood, sawlogs and sawn timber)

    UNSPSC Code

    UNSPSC Code 11121600(Wood)


    Referencing This Standard
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    DOI: 10.1520/D0143-94R00E01

    Citation Format

    ASTM D143-94(2000)e1, Standard Test Methods for Small Clear Specimens of Timber, ASTM International, West Conshohocken, PA, 2007, www.astm.org

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