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GB/T 1929-2009 English PDF

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GB/T 1929-2009: Method of sample logs sawing and test specimens selection for physical and mechanical tests of wood
Status: Obsolete

GB/T 1929: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 1929-2009	English	279	Add to Cart	3 days [Need to translate]	Method of sample logs sawing and test specimens selection for physical and mechanical tests of wood	Obsolete	GB/T 1929-2009
GB/T 1929-1991	English	199	Add to Cart	2 days [Need to translate]	Method of sample logs sawing and test specimens selection for physical and mechanical tests of wood	Obsolete	GB/T 1929-1991

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Basic data

Standard ID	GB/T 1929-2009 (GB/T1929-2009)
Description (Translated English)	Method of sample logs sawing and test specimens selection for physical and mechanical tests of wood
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	B60
Classification of International Standard	79.020
Word Count Estimation	6,621
Date of Issue	2009-02-23
Date of Implementation	2009-08-01
Older Standard (superseded by this standard)	GB/T 1929-1991
Quoted Standard	GB/T 1927-2009; GB/T 1931; GB/T 8170
Adopted Standard	ISO 3129-1975.MOD
Regulation (derived from)	National Standard Approval Announcement 2009 No.3 (Total No.143)
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 distribution of the collected test materials, adjust the number of samples tested material and moisture content. This standard applies to test materials and samples of sawing interception.

GB/T 1929-2009: Method of sample logs sawing and test specimens selection for physical and mechanical tests of wood

---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.
Method of sample logs sawing and test specimens selection for physical and mechanical tests of wood ICS 79.020 B60 National Standards of People's Republic of China Replacing GB/T 1929-1991 Physical and mechanical tests of wood and wood sawing The method of test specimens (ISO 3129. 1975, Wood-Samplingmethodsandgeneralrequirementsfor physicalandmechanicaltests, MOD) Posted 2009-02-23 2009-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ISO 3129. 1975 "sampling methods physical and mechanical tests and general requirements." This standard and ISO 3129. 1975 compared to the main technical content differences are as follows. --- Change the sample blank interception scheme; --- Adjust hardness variation coefficient of 20%. This standard replaces GB/T 1929-1991 "physical and mechanical tests of wood sawing wood and interception methods specimen." This standard compared with GB/T 1929-1991, the main technical changes as follows. --- Sawing proposed new programs in 3.1, 3.2 and 3.5; --- Increased wood nail holding power test methods and test methods for wood grain tensile strength test material sawing scheme in 3.1; --- Remove the 1991 version 3.4; --- Increased toughness, hardness, shrinkage coefficient of variation 5.2. This standard was proposed by the State Forestry Administration. This standard by the National Standardization Technical Committee timber. This standard is drafted by. China Forestry Science Institute of Wood Industry. Participated in the drafting of this standard. Chinese Academy of Forestry Forestry Institute for New Technologies. The main drafters of this standard. Ren Haiqing, Luo Xiuqin, sub-Yin Fang, Wang Zhaohui, Jiang Jinghui, Zhou Haibin. This standard was first published in 1980, the first revision in 1991, this is the first revision. This standard by the National Standardization Technical Committee responsible for the interpretation of wood. Physical and mechanical test materials and test specimens sawing method

1 Scope

This standard specifies the test material distribution, and adjust the number of samples collected from the test material moisture content. This standard applies to test materials and specimens taken sawing.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1927-2009 physical and mechanical test material acquisition method (ISO 4471. 1982, Wood-Samplingtreesandlogs fordeterminationofphysicalandmechanicalpropertiesofwoodinhomogeneousstands, NEQ) GB/T 1931 Method for determination of moisture content of wood (ISO 3130. 1975, Wood-Determinationofmoisturecontentfor physicalandmechanicaltests, MOD) GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment

3 test material distribution

1927-2009 4.3 3.1 In accordance with the provisions of GB/T , log test material collected after transported to the test site shall be sawing as soon as possible. First sawn Coating head and cracking section ends of test materials, test material and then by the lower end of each timber, followed by three 300mm section of interception of wood. A wooden press section Figure 1 interception 300mm × 70mm × 70mm strips of wood, the hardness of the interception from each batten and nail holding power each a sample blank; a wood Section in Figure 2 interception 300mm × 35mm × 170mm radial wood, intercept radial tensile, compressive modulus of elasticity of the radially from each batten And each radial shear a sample blank. A timber in accordance with paragraph 3 interception 300mm × 35mm × 170mm chord to wood, from each The interception of wood tangential tensile, compressive chord to chord to the shear modulus of elasticity of each of a sample blank. More than wood without pith. 1 hardness and nail holding power sample blank interception method of FIG.

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