Active Standard ASTM D198 | Developed by Subcommittee: D07.01
Book of Standards Volume: 04.10
Historical (view previous versions of standard)
Significance and Use
6.1 The flexural properties established by this test method provide:
6.1.1 Data for use in development of grading rules and specifications;
6.1.2 Data for use in development of working stresses for structural members;
6.1.3 Data on the influence of imperfections on mechanical properties of structural members;
6.1.4 Data on strength properties of different species or grades in various structural sizes;
6.1.5 Data for use in checking existing equations or hypotheses relating to the structural behavior of beams;
6.1.6 Data on the effects of chemical or environmental conditions on mechanical properties;
6.1.7 Data on effects of fabrication variables such as depth, taper, notches, or type of end joint in laminations; and
6.1.8 Data on relationships between mechanical and physical properties.
6.2 Procedures are described here in sufficient detail to permit duplication in different laboratories so that comparisons of results from different sources will be valid. Special circumstances may require deviation from some details of these procedures. Any variations shall be carefully described in the report (see Section 11).
1.1 These test methods cover the evaluation of lumber in structural size by various testing procedures.
1.2 The test methods appear in the following order:
4 – 11
Compression (Short Column)
13 – 20
Compression (Long Member)
21 – 28
29 – 36
37 – 44
45 – 52
1.3 Notations and symbols relating to the various testing procedures are given in Appendix X1.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 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.
D9 Terminology Relating to Wood and Wood-Based Products
D1165 Nomenclature of Commercial Hardwoods and Softwoods
D2395 Test Methods for Specific Gravity of Wood and Wood-Based Materials
D2915 Practice for Sampling and Data-Analysis for Structural Wood and Wood-Based Products
D3737 Practice for Establishing Allowable Properties for Structural Glued Laminated Timber (Glulam)
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
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
E83 Practice for Verification and Classification of Extensometer Systems
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E2309 Practices for Verification of Displacement Measuring Systems and Devices Used in Material Testing Machines
ICS Number Code 79.040 (Wood, sawlogs and sawn timber)