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GB/T 31291-2014: Standard for evaluation of duration of load and creep effects of wood and wood-based products
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 31291-2014 | English | 209 |
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Standard for evaluation of duration of load and creep effects of wood and wood-based products
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GB/T 31291-2014
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Basic data | Standard ID | GB/T 31291-2014 (GB/T31291-2014) | | Description (Translated English) | Standard for evaluation of duration of load and creep effects of wood and wood-based products | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B60 | | Classification of International Standard | 91.080.20 | | Word Count Estimation | 9,942 | | Date of Issue | 12/5/2014 | | Date of Implementation | 3/11/2015 | | Quoted Standard | GB/T 1931; GB/T 50329; ISO 16572 | | Regulation (derived from) | Announcement of Newly Approved National Standards 2014 No. 27 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Standard specifies the test methods and evaluation of wood and wood-based products, load duration effect and creep properties. This Standard applies to the assessment of lumber, structural composite lumber and structural wood-based panel products suc | GB/T 31291-2014: Standard for evaluation of duration of load and creep effects of wood and wood-based products
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Standard for evaluation of duration of load and creep effects of wood and wood-based products
ICS 91.080.20
B60
National Standards of People's Republic of China
Wood and wood-based products continued to load
Time effect and creep performance evaluation
Issued on. 2014-12-05
2015-03-11 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents.
This standard was proposed by the State Forestry Administration.
This standard by the National Standardization Technical Committee of timber structures Wood Technical Committee (SAC/TC41/SC4) centralized.
This standard was drafted. China Forestry Science Institute of Wood Industry, Zhejiang Fangyuan Wood Co., Ltd., Zhejiang wood products
Nanxun Quality Inspection Center detection, Lishui City of Quality and Technical Supervision and Inspection Institute, the International Center for Bamboo and Rattan, Beijing regal Eurasian Wood Limited.
The main drafters of this standard. Yu Huaqiang, should eastward, Zhang Xun Asia, Xuwei Tao, Zhang Yuping, Zhang Ran, this fee Hua, Lu Bin, Shen Bin Hua, Yang,
Pay Yuejin, Yang Zhong, Zhou Haibin, Zheng Jia ago.
Wood and wood-based products continued to load
Time effect and creep performance evaluation
1 Scope
This standard specifies the test methods and evaluation of wood and wood-based products load duration effect and creep properties.
This standard applies to the assessment of sawn timber, structural composite lumber and structural wood-based panel products such as load duration effect and creep properties. this
Standard is not used to evaluate the performance impact under load products, or for the duration of the effect of the product load and creep influence coefficient system
Number quantify.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 1931 Method for determination of moisture content of wood
GB/T 50329 standard test methods for wood structures
ISO 16572 wooden structure detection method based panel structural features (Timberstructures-Wood-basedpanels-Test
methodsforstructuralproperties)
3 Terms and Definitions
GB/T 1931 and GB/T 50329 and defined by the following terms and definitions apply to this document.
3.1
Sample width breadth
Vertical and perpendicular to the sample size to span the bending direction of the load applied.
3.2
Sample height depth
Perpendicular and parallel to the sample size to span the bending direction of the load applied. (See FIG. 1, t Representative sample height)
3.3
Span span
Supported by two points curved horizontal distance between the specimen. (See FIG. 1, l is the span)
3.4
Creep creep
Test material under constant load increases with time deformation.
3.5
Initial deflection initialdeflection
Deflection of the sample after the applied load instantly generated, this standard takes 1min generated when the deflection.
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