ASTM D4761 - 13 Standard Test Methods for Mechanical Properties of Lumber and Wood-Base Structural Material

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:

	Section
Bending edge-wise	6
Bending flat-wise:
Center point loading	7
Third point loading	8
Axial strength in tension	9
Axial strength in compression	10

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

NIST Voluntary Product Standard PS20 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)

Referencing This Standard

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DOI: 10.1520/D4761-13

Citation Format

ASTM D4761-13, Standard Test Methods for Mechanical Properties of Lumber and Wood-Base Structural Material, ASTM International, West Conshohocken, PA, 2013, www.astm.org