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  • ASTM
    D143-22 Standard Test Methods for Small Clear Specimens of Timber
    Edition: 2022
    $144.00
    Unlimited Users per year

Description of ASTM-D143 2022

ASTM D143-22

Historical Standard: Standard Test Methods for Small Clear Specimens of Timber




ASTM D143

Scope

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

1.1.1 These test 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 values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 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 Specimens

 5

Control of Moisture Content and Temperature

 6

Record of Heartwood and Sapwood

 7

Static Bending

 8

Compression Parallel to Grain

 9

Impact Bending

10

Toughness

11

Compression Perpendicular to Grain

12

Hardness

13

Shear Parallel to Grain

14

Cleavage

15

Tension Parallel to Grain

16

Tension Perpendicular to Grain

17

Nail Withdrawal

18

Specific Gravity and Shrinkage in Volume

19

Radial and Tangential Shrinkage

20

Moisture Determination

21

Permissible Variations

22

Calibration

23

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.


Keywords

clear specimens; small clear specimens; timber; wood;


ICS Code

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


DOI: 10.1520/D0143-22



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