GB/T 45644-2025Test method for resistance against surface and traffic loading of the thermoplastics inspection chamber (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is modified to adopt ISO 13266:2022 "Inspection wells and manholes for thermoplastic pipe systems for non-pressure buried drainage and sewage treatment" Determination of the resistance of thermoplastic shafts to ground and traffic loads.

Compared with ISO 13266:2022, this document has many structural adjustments. Comparison table of structural number changes between the two documents See Appendix A. This document has many technical differences compared to ISO 13266:2022.

A list of these technical differences and their causes is given in Appendix B. The following editorial changes were made to this document.

--- Change the name of the standard to "Test method for resistance of thermoplastic manholes to ground and traffic loads" to conform to domestic industry practices;

--- Deleted the note in Chapter 1 of ISO 13266:2022;

--- Deleted footnotes a and c in Table 1 of ISO 13266:2022.

1 Scope

This document describes the thermoplastic manhole upper assembly (usually including the shaft, offset end, expansion joint and pressure ring) and traffic load performance test methods.

This document applies to the testing of the resistance of thermoplastic manhole upper assemblies to ground and traffic loads.

This document is not applicable to the testing of thermoplastic manhole covers and cover bases.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document.

For referenced documents without a date, only the latest version (including all amendments) applies to this document. This document.

GB/T 23858 Inspection well cover

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Principle

The test component is buried in the test box (or buried according to the on-site conditions) and load is applied (see Figure 1). During the loading process, the manhole cover or its After the test is completed, check the appearance and defects of the upper assembly.

Other documents that reference this document may use the following test conditions different from those specified in this document.

a) Number of samples (see Chapter 6);

b) Maximum load (see Chapter 9);

c) Type of backfill material (see Chapter 9);

d) Compactness of backfill material (see Chapter 9).

5 Experimental equipment