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LY/T 2721-2016 English PDF

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LY/T 2721-2016: Standard for establishing characteristic values for mechanical properties of structural-use oriented strand board
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PDF similar to LY/T 2721-2016


Standard similar to LY/T 2721-2016

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Basic data

Standard ID LY/T 2721-2016 (LY/T2721-2016)
Description (Translated English) Standard for establishing characteristic values for mechanical properties of structural-use oriented strand board
Sector / Industry Forestry Industry Standard (Recommended)
Classification of Chinese Standard B70
Word Count Estimation 17,187
Date of Issue 2016-07-27
Date of Implementation 2016-12-01
Regulation (derived from) State Forestry Administration Announcement No.17 of 2016; Industry Standard Announcement No.16 of 2016 (No.204)
Issuing agency(ies) State Forestry Administration

LY/T 2721-2016: Standard for establishing characteristic values for mechanical properties of structural-use oriented strand board


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(A Method for Determining Eigenvalues of Mechanical Performance Indexes of Oriented Particleboard with Structure) ICS 79.060 B70 People's Republic of China Forestry Industry Standard Structural properties of oriented strand board Method for determining index feature value Released on.2016-07-27 Implementation of.2016-12-01 State Forestry Administration released

Content

Foreword I 1 Scope 1 2 Normative references 1 3 Terms, definitions and symbols 1 3.1 Terms and Definitions 1 3.2 Symbol 2 4 Sampling and sample preparation 3 5 Test method 3 5.1 Moisture content and air dry density 3 5.2 Bending resistance 3 5.3 inter-layer shear performance 3 5.4 In-plane shear performance 4 5.5 axial tensile performance 4 5.6 axial compression performance 4 5.7 gripping force 4 5.8 pin bearing pressure strength 5 5.9 anti-nail cap pull-through force 7 5.10 Board surface compressive strength 8 6 eigenvalue determination 9 Appendix A (informative) Determination of the equivalent specific gravity value of the oriented strand board connection performance 11 Appendix B (Normative Appendix) Eigenvalue Coefficients and Orders 14

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Some elements of this standard may involve patents, and the issuing organization does not assume responsibility for identifying these patents. This standard is proposed and managed by the National Timber Standardization Technical Committee Structural Subcommittee on Wood (SAC/TC41/SC4). This standard was drafted. Nanjing Forestry University, Tongji University, Institute of Wood Industry, Chinese Academy of Forestry, State Forestry Administration Industrial Planning and Design Institute, Shouguang Luli Wood Industry Co., Ltd., Guangxi Hengxian Xinweilin Board Co., Ltd., Manzhouli Lianzhong Wood Industry Co., Ltd. Responsible company. The main drafters of this standard. Jin Juzhen, Xiong Haibei, Su Yi, Chen Zhiyong, Ding Jianwen, Liu Yingyang, Wang Zhiqiang, Zhou Jianhui, Zhou Haibin, Xu Weitao, Li Yanxia, Zheng Fengshan, Wang Xiuquan. Structural properties of oriented strand board Method for determining index feature value

1 Scope

This standard specifies the method for determining the characteristic values of the mechanical properties of the oriented strand board, including the sampling and testing of the oriented strand board. Method and eigenvalue determination. The method specified in this standard is applicable to oriented strand board for structural use of wood.

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 17657 Artificial board and finished panel physicochemical properties test method GB/T 18259 wood-based panel and its surface decoration terminology GB/T 31264-2014 Test method for mechanical properties of structural panels LY/T 1580 Oriented Strand Board LY/T 2059 steel nails for wooden structures 3 terms, definitions and symbols 3.1 Terms and definitions The following terms and definitions defined in GB/T 18259 and LY/T 1580 apply to this document. 3.1.1 Structural oriented strand board structural-useorientedstrandboard (OSB) Oriented strand board used as a basic component of a building or other structure and used under load-bearing conditions. 3.1.2 Mechanical performance index characteristic value characteristicvaluesofmechanicalproperties The statistical value calculated from the test data is used to determine the OSB performance of the structure or to determine the design value. This standard is based on the corresponding mechanical properties The statistic distribution of the indicator can have a 5% quantile value or average value of 75% confidence as the eigenvalue. 3.1.3 Strong axis majoraxis;primaryaxis The direction of the sheet parallel to the orientation of the surface shavings has better mechanical properties than the weak axis. For the size of the web For an oriented strand board of 1220 mm × 2440 mm, the direction of the strong axis generally refers to the direction of 2440 mm, that is, the length direction of the sheet. 3.1.4 Weak axis minoraxis;secondaryaxis The orientation of the sheet perpendicular to the orientation of the surface shavings has a relatively low mechanical properties relative to the strong axis. For web size For the 1220mm × 2440mm oriented strand board, the weak axis direction usually refers to the direction of 1220mm, that is, the width of the sheet. direction.

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