T/ZZXJX 244-2022 Plastic drainage inspection well technical specification
T/ZZXJX 244-2022 Plastic drainage inspection well technical specification
Basic Information
Scope
Main technical content: 1 Scope 2 Normative reference documents 3 Terms and definitions 4 Materials 4.1 General provisions 4.2 Materials for connection fittings 4.3 Welding materials and sealing materials 5 Design of inspection wells 5.1 General provisions 5.2 Maximum spacing between inspection wells 5.3 Selection of inspection wells 6 Structural design of inspection wells 6.1 General provisions 6.2 Load classification 6.3 Standard values of permanent loads 6.4 Standard values of variable loads and quasi-permanent value coefficients 6.5 Calculation of bearing capacity limit states 6.6 Verification of normal use limit states 7 Installation of inspection wells 7.1 General provisions 7.2 Well pits 7.3 Foundation of inspection wells 7.4 Connection between inspection wells and connection fittings 7.5 Connection between connection fittings and pipes 7.6 Installation of pressure covers 8 Backfilling 8.1 General provisions 8.2 Backfilling materials and backfilling requirements 9 Quality inspection 9.1 Product quality inspection 9.2 Construction quality inspection 10 Acceptance of construction quality