GB/T 39422-2020Determination methods of characteristic values for dowel-bearing strength and withdrawal capacity of nails and screws in timber structure (English PDF)
木结构销槽承压强度及钉连接承载力特征值确定方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 19, 2020
Implementation date
June 1, 2021
Scope
GB/T 39422-2020 is the English-translated version of 木结构销槽承压强度及钉连接承载力特征值确定方法.
GB/T 39422-2020 is the Chinese standard "Determination methods of characteristic values for dowel-bearing strength and withdrawal capacity of nails and screws in timber structure".
Its scope clause reads: This standard specifies the terms and definitions, test methods, and data analysis for the compression strength of wooden structure pin grooves and the characteristic value of nail connection pull-out bearing capacity Statistical method, method of determining characteristic value.
This standard applies to the determination of the characteristic value of the bearing strength of the pin groove of the wooden structure and the pull-out bearing capacity of the nail connection. Its clauses include terms and definitions.
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Document preview — GB/T 39422-2020
National Standard of the People's Republic of China
- ICS
- 91.080.20
- Classification
- P 23
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 3.1 Uplift capacity
- 3.2 Pin groove bearing strength
- 3.3 Probability distributions
- 3.4 Statistical parameters
- 3.5 Eigenvalues
1 Scope
This standard specifies the terms and definitions, test methods, and data analysis for the compression strength of wooden structure pin grooves and the characteristic value of nail connection pull-out bearing capacity
Statistical method, method of determining characteristic value.
This standard applies to the determination of the characteristic value of the bearing strength of the pin groove of the wooden structure and the pull-out bearing capacity of the nail connection.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 102 Hexagon head wood screws
GB/T 846 Cross recessed countersunk head tapping screws
GB/T 847 Cross recessed countersunk head tapping screws
GB/T 1931-2009 Method for determination of wood moisture content
GB/T 1933-2009 Method for determination of wood density
GB/T 17657 Test method for physical and chemical properties of wood-based panels and facing wood-based panels
GB 50005-2017 Wood structure design standard
LY/T 2059 Steel nails for wood structure
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Uplift capacity
The maximum force exerted by pulling out a nail that is driven vertically into the wood.
3.2 Pin groove bearing strength
The ability of wood materials to withstand the pressure of pin metal connectors.
3.3 Probability distributions
The statistical law of random variable value is generally expressed by probability density function or probability distribution function.
3.4 Statistical parameters
In the probability distribution, it is used to represent the average level and dispersion of random variables.
3.5 Eigenvalues
The 5% quantile of the probability distribution.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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