GB/T 36407-2018 English PDF

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GB/T 36407-2018: Machine stress graded lumber
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36407-2018	359	Add to Cart	4 days	Machine stress graded lumber	Valid

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Basic data

Standard ID: GB/T 36407-2018 (GB/T36407-2018)
Description (Translated English): Machine stress graded lumber
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: P23
Classification of International Standard: 79.040
Word Count Estimation: 18,154
Date of Issue: 2018-06-07
Date of Implementation: 2019-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36407-2018: Machine stress graded lumber

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Machine stress graded lumber ICS 79.040 P23 National Standards of People's Republic of China Mechanical stress graded sawn timber Published on.2018-06-07 2019-01-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the National Forestry and Grassland Bureau. This standard is under the jurisdiction of the National Timber Standardization Technical Committee Structural Wood Subcommittee (SAC/TC41/SC4). This standard was drafted. Institute of Wood Industry, Chinese Academy of Forestry, Institute of Forestry New Technology, Chinese Academy of Forestry, Suzhou Kunlun Green Jianmu Structure Technology Co., Ltd., Xiamen Yihewei Construction Engineering Management Co., Ltd., Xinhan Wood Structure Technology (Deep Shenzhen) Co., Ltd., Suzhou Fitwell Wood Structure Housing Co., Ltd., European Union Chamber of Commerce, European Wood Industry Association of China, Guangdong Runcheng Chuangzhan Wood Industry Co., Ltd. the company. The main drafters of this standard. Ren Haiqing, Wang Zhaohui, Ni Chun, Zhou Haibin, Zhong Yong, Ni Wei, Xu Jinfei, Yang Linqing, Shen Binhua, Zhang Shaoming, Guan Runkai. Mechanical stress graded sawn timber

1 Scope

This standard specifies the terms and definitions of mechanical stress graded sawn timber, technical requirements, test methods, inspection rules, marking, packaging, transportation and Storage and quality control methods. This standard is applicable to coniferous sawn timber products that have been surface-treated after drying and meet the standard size requirements. Other tree species or non The standard size can be referred to under the same conditions.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 1931 Determination method of wood moisture content GB/T 1933 Wood Density Determination Method GB/T 2828.1. Sampling and sampling procedures - Part 1 . Batch-to-batch sampling plan searched by the acceptance quality limit (AQL) GB/T 4823 sawn timber defect GB/T 16734 China's main wood name GB/T 18513 China's main imported wood name GB/T 50329 wooden structure test method standard

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 The non-destructive test is carried out on the sawn timber by mechanical stress measuring equipment, and the strength is determined according to the measured bending strength and elastic modulus of the sawn timber. Sawn timber that is graded and meets the permissible limits for visual defects of the corresponding grade. 3.2 Visual defect tolerance limit visualydefectslimit Various visual defects of mechanical stress graded sawn timber and their allowable limits. 3.3 Maximum strength reduction defect maximumstrength-reducingdefects Natural or processing defects that cause the greatest reduction in the strength of the sawn timber, such as knots, cracks, decay, and oblique texture. 3.4 Grading machine A device capable of testing the elastic modulus of a sawn timber and distinguishing the mechanical properties of the sawn timber. 3.5 Narrow-faced flexural modulus of elasticity edge-wisebendingmodulusofelasticity The ratio of stress to strain in the proportional limit range when a bending load is applied to the narrow side of the sawn timber. ......

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