GB/T 39395-2020 English PDF

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GB/T 39395-2020: Test method for buckling resistance of the thermoplastics inspection chamber bases
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39395-2020	229	Add to Cart	3 days	Test method for buckling resistance of the thermoplastics inspection chamber bases	Valid

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Basic data

Standard ID: GB/T 39395-2020 (GB/T39395-2020)
Description (Translated English): Test method for buckling resistance of the thermoplastics inspection chamber bases
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G33
Classification of International Standard: 83.140.30
Word Count Estimation: 12,188
Date of Issue: 2020-11-19
Date of Implementation: 2021-06-01
Quoted Standard: GB/T 18042; GB/T 19278; CJJ/T 209
Adopted Standard: ISO 13267-2010, MOD
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies three test methods for compressive instability under the combined forces of soil and groundwater after the installation of the thermoplastic inspection well seat: air method, sand box method and water box method. This standard is applicable to the compression instability test of thermoplastic plastic inspection wells.

GB/T 39395-2020: Test method for buckling resistance of the thermoplastics inspection chamber bases

---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.
Test method for buckling resistance of the thermoplastics inspection chamber bases ICS 83.140.30 G33 National Standards of People's Republic of China Thermoplastic inspection well well seat compression instability test method 2020-11-19 released 2021-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Principle 1 5 Test device 1 6 Sample 2 7 Condition adjustment and test environment 2 8 Test Step 2 9 Calculation method of deformation extrapolation 6 10 Test report 7 Appendix A (informative appendix) The structural changes of this standard compared with ISO 13267.2010 8 Appendix B (informative appendix) Evaluation example 9

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the redrafting method to amend and adopt ISO 13267.2010 "Thermoplastic piping system for non-pressurized underground drainage and sewage Method for the determination of the pressure instability of the foundations of sexual inspection wells and manhole wells". Compared with ISO 13267.2010, this standard has many adjustments in structure. Appendix A lists this part and ISO 13267.2010 The chapter number comparison list. The technical differences between this standard and ISO 13267.2010 and the reasons are as follows. --- Regarding normative reference documents, this standard has made adjustments with technical differences to adapt to my country's technical conditions and adjustments. The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows. ● Replace ISO 9967 with GB/T 18042, which is equivalent to adopting international standards; ● The reference document ENV1046.2001 is deleted; ● Added reference to GB/T 19278; ● Added CJJ/T 209; ---The terms and definitions of "3.1 inspection well" and "3.2 manhole well" in ISO 13267.2010 are deleted; ---The terms and definitions of "thermoplastic inspection well" have been added, which is in line with domestic industry customs (see 3.1); ---The definition of "well seat" and "runch" has been added to make it easier for users to understand (see 3.2, 3.3); ---Deleted the specific requirements for samples in Chapter 4 of ISO 13267.2010; ---Added Chapter 6 "Sample" to make the standard content structure more reasonable; ---The calculation formula for the lateral deformation value of the runner is added, and the original text is missing (see 8.1.3); ---Deleted Figure 2 of ISO 13267.2010, there is no product of this structure type in China; ---Added ISO 13267.2010 requirements for data recording of flow trough deformation value measurement, clarifying the specific requirements for data recording (see 8.1.5, 8.1.6); ---Modified the test schematic diagram of Figure 4 of ISO 13267.2010 to make the test device and test sample more clear (see Figure 3); ---Added data processing, and made detailed instructions on the calculation of results and continued testing (see 9.1). This standard has made the following editorial changes. ---In order to comply with the domestic industry habits, the standard name was changed to "Thermoplastic inspection well well seat compression instability test method"; ---In accordance with GB/T 1.1-2009 and starting from the convenience of user understanding, the scope chapter has been rewritten; ---Due to typographical errors in international documents, the correlation coefficient in the evaluation example in Appendix A of the international documents was revised, and "R >0.9" was changed to "R >0.99". Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This standard was proposed by the China National Light Industry Council. This standard is under the jurisdiction of the National Standardization Technical Committee for Plastic Products (SAC/TC48). Drafting organizations of this standard. Jiangsu Hemajing Co., Ltd., China Petroleum & Chemical Corporation Beijing Research Institute of Chemical Industry, Guangdong Union Plastic Technology Industrial Co., Ltd., Jiangyin Zhongcai Mould Plastic Co., Ltd., Hebei Shengshi Jinjing Plastic Industry Co., Ltd., Chengde Precision Testing Machine Co., Ltd. The main drafters of this standard. Zhang Wei, Zhou Minwei, Li Tongyi, Sun Di, Xue Yanmin, Wang Xinhua, Zhou Minhong. Thermoplastic inspection well well seat compression instability test method

1 Scope

This standard specifies three tests for the resistance to compression instability under the combined forces of soil and groundwater after the installation of the thermoplastic inspection well seat Methods. air method, sandbox method and water tank method. This standard is applicable to the compression instability test of thermoplastic plastic inspection wells.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 18042 Thermoplastic pipe creep rate test method (GB/T 18042-2000, eqvISO 9967.1994) GB/T 19278 General terms and definitions of thermoplastic pipes, fittings and valves CJJ/T 209 Technical Specification for Application of Plastic Drainage Inspection Well

3 Terms and definitions

The following terms and definitions defined in GB/T 19278 apply to this document. 3.1 Thermoplastic inspection well There are wellheads on the ground that are used to connect drainage and sewage devices and/or change the direction of drainage and sewage flow to facilitate pipeline inspection, clearing, and maintenance Plastic components for other operations. 3.2 Iza Check the parts connecting the drain pipe and the shaft at the bottom of the well. 3.3 Runner The bottom of the well seat is provided with a guiding arc structure that facilitates smooth drainage.

4 Principle

Under the specified ambient temperature, the sealing assembly composed of the inspection well seat and the wellbore is at a specified constant pressure (positive external pressure or internal negative pressure) Keep it for the specified time, and after the test, check whether the component has cracks and other defects that affect the use. During the test, record the deformation value of the sample over time in accordance with relevant standards.

5 Test device

5.1 Test box A box-type device containing test components and filling materials. ......

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