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ASTM D5457-23

Current Revision

Standard Specification for Computing Reference Resistance of Wood-Based Materials and Structural Connections for Load and Resistance Factor Design

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1.1 This specification covers the format conversion procedure for computing the reference resistance of wood-based materials and structural connections for use in load and resistance factor design (LRFD). The format conversion procedure is outlined in Section 4. The reference resistance derived from this specification applies to the design of structures addressed by the load combinations in ASCE 7-16.

1.2 A commentary to this specification is provided in Appendix X1.

1.3 Guidance for users considering test-based derivation of reference resistance is provided in Appendix X2.

1.4 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.

1.5 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.


This specification covers procedures for computing the reference resistance of wood-based materials and structural connections for use in load and resistance factor design (LRFD). Parameters required for the derivation of reference resistance are presented. These parameters include the distribution percentile, coefficient of variation, data confidence factor, and reliability normalization factor. The shape and scale parameters of the two-parameter Weibull distribution shall be established to define the distribution of the material resistance. The data confidence factor accounts for uncertainty associated with data sets. This factor, which is a function of coefficient of variation, sample size, and reference percentile, is applied as a multiplier on the distribution estimate. The reliability normalization factor is used to adjust the distribution estimate to achieve a target reliability index. The reliability normalization factor is the ratio of the computed resistance factor to the specified resistance factor, adjusted by a scaling factor.


SDO ASTM: ASTM International
Document Number D5457
Publication Date May 1, 2023
Language en - English
Page Count 13
Revision Level 23
Supercedes
Committee D07.02
Publish Date Document Id Type View
May 1, 2023 D5457-23 Revision
May 1, 2021 D5457-21A Revision
April 1, 2021 D5457-21 Revision
April 1, 2020 D5457-20 Revision
July 1, 2019 D5457-19C Revision
April 15, 2019 D5457-19B Revision
April 1, 2019 D5457-19A Revision
Jan. 1, 2019 D5457-19 Revision
Nov. 1, 2018 D5457-18 Revision
Nov. 1, 2017 D5457-17 Revision
May 1, 2015 D5457-15 Revision
May 1, 2012 D5457-12 Revision
Sept. 1, 2010 D5457-10 Revision
Nov. 1, 2004 D5457-04A Revision
May 1, 2004 D5457-04 Revision
April 10, 1998 D5457-93R98 Reaffirmation