ASTM D4761-19 - 1.4.2019
 
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 have the potential to 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-based structural materials.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 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.

 
2. Referenced Documents

D4442-20(2025)

Standard Test Methods for Direct Moisture Content Measurement of Wood and Wood-Based Materials

D2915-25

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

D9-20

Standard Terminology Relating to Wood and Wood-Based Products

NIST Voluntary Product Standard PS20

American Softwood Lumber Standard

E177-26a

Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods (Includes all amendments and changes 5/14/2026).

D198-22a

Standard Test Methods of Static Tests of Lumber in Structural Sizes (Includes all amendments and changes 10/14/2022).

D7438-20(2025)

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

E4-24

Standard Practices for Force Calibration and Verification of Testing Machines

E6-25

Standard Terminology Relating to Methods of Mechanical Testing