GB/T 1928-2009 English PDF

US$239.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 1928-2009: General requirements for physical and mechanical tests of wood
Status: Obsolete

GB/T 1928: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 1928-2009	239	Add to Cart	2 days	General requirements for physical and mechanical tests of wood	Obsolete
GB/T 1928-1991	199	Add to Cart	2 days	General requiements for physical and mechanical tests of wood	Obsolete

Similar standards

LY/T 2407   GB/T 30762   GB/T 26900   GB/T 45887   GB/T 4815   GB/T 6043   

Basic data

Standard ID: GB/T 1928-2009 (GB/T1928-2009)
Description (Translated English): General requirements 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: 5,576
Date of Issue: 2009-02-23
Date of Implementation: 2009-08-01
Older Standard (superseded by this standard): GB/T 1928-1991
Quoted Standard: GB/T 8170; GB/T 8170; GB/T 8170
Adopted Standard: ISO 3129-1975, NEQ
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 sample timber production requires physical and mechanical testing and inspection, adjust the moisture content of the sample, laboratory requirements, preparation of calibration test equipment, as well as the calculation and reporting of test results of the test. This standard applies to the physical and mechanical properties of wood unblemished small sample tests.

GB/T 1928-2009: General requirements 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.
General requirements for physical and mechanical tests of wood ICS 79.020 B60 National Standards of People's Republic of China Replacing GB/T 1928-1991 Physical and mechanical test methods - General (ISO 3129. 1975, Wood-Samplingmethodsandgeneralrequirementsfor physicalandmechanicaltests, NEQ) 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 standard and the international standard ISO 3129. 1975 "sampling methods physical and mechanical tests and general requirements," the degree of consistency Non-equivalent. This standard replaces GB/T 1928-1991 "General physical and mechanical test methods." This standard compared with GB/T 1928-1991 The main changes are as follows. --- 3.2 improves the accuracy of the production samples; --- Chapters 4 and 5 are improved when the sample moisture adjusting the relative humidity control accuracy. 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. Shanghai Research Institute of Building Sciences. The main drafters of this standard. Asian Yin Fang, Ren Haiqing, Luo Xiuqin, Zhang Zhiyu, Wang Zhaohui, Jiang Jinghui, Zhou Haibin. This standard was first published in 1980, the first revision in 1991, this is the second revision. Physical and mechanical test methods - General

1 Scope

This standard specifies the requirements for sample preparation to adjust the physical and mechanical tests and inspections, the moisture content of the sample, laboratory requirements, test set Calibration equipment, as well as the calculation of the test results and test preparation of the report. This standard applies to the physical and mechanical properties of wood unblemished small sample test.

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 8170 repair value expressed about the rules and limit values \u200b\u200band judgment

3 sample preparation and testing accuracy

3.1 Each sample should be flat surface, wherein two opposite edges on the end should be roughly parallel to the growth ring of the sample end, and with the other two Vertical edges, does not allow the obvious visible defects on the sample, each sample should be clearly written on the numbers. 3.2 precision sample preparation, in addition to the specific requirements of the test method, the adjacent surface of the specimen shall be as precise right angles. Sample length , Width, and thickness tolerance of ± 0.5mm. In the relative deviation of dimensions on the entire sample, should be less than 0.1mm. 3.3 The accuracy of the sample perpendicular to the adjacent surface, steel rectangular device test.

4 adjust the sample moisture content

After air-drying or drying chamber (lower than 60 ℃ temperature conditions) or sample blank sample strips made of treated, it should be placed in the equivalent Wood equilibrated water content was 12% of the environmental conditions, to adjust the moisture content of the sample equilibrium, the equilibrium moisture content of wood in order to meet the environmental conditions of 12% Requirements, when the room temperature (20 ± 2) ℃, relative humidity should be maintained at (65 ± 3)%; when the temperature is lower or higher than (20 ± 2) ℃, the corresponding need Decrease or increase the relative humidity to ensure that the equilibrium moisture content of wood to reach 12% of the environmental conditions.

5 laboratory temperature and humidity conditions

The laboratory shall maintain the temperature (20 ± 2) ℃ and relative humidity (65 ± 3)%. Such as the laboratory can not maintain this condition, the adjusted aqueous Sample rate should be sent to the laboratory after the first into a closed container, when the test taken. Test equipment calibration 6 Testing machine, and other precision measuring instruments measuring test, regular test verification procedures in accordance with national measurement sector, load testing machine Indication accuracy of ± 1.0%.

7 to prepare calculations and test results of the test report

7.1 The test results of the physical and mechanical properties, shall be calculated according to the formula specified in each standard method. 7.2 dealing with the test results, each shall be calculated by the following statistics. a) according to formula (1) determine the arithmetic mean x0. (1) ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 1928-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 1928-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 1928-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 1928-2009_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 1928-2009?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 1928-2009 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.