1.0.1 This code is formulated with a view to intensify the construction management, specify construction technology, unify construction quality inspection and acceptance standard as well as ensure work quality for water supply and water drainage (hereinafter referred to as "water and sewerage") pipeline works.
1.0.2 This Code is applicable to construction, extension and reconstruction for the construction and acceptance of outdoor water and sewerage pipeline works in urban public facility and industrial enterprise; but not applicable to construction and acceptance of water and sewerage pipeline with special requirement in industrial enterprise.
1.0.3 Variety, specification and property of raw material, semi-finished product and finished product for water and sewerage pipeline works must comply with relevant standards and design requirement of the nation; products contacting the drinking water must comply with relevant sanitary requirements. Eliminated and unallowable products public proclaimed by the nation must not be used.
1.0.4 For the construction and acceptance of water and sewerage pipeline works, not only the requirements stipulated in this Code, but also those in the current relevant ones of the nation shall be complied with.
Foreword II
1. General provisions 1
2. Terminologies 1
3. Fundamentals 3
3.1 Fundamentals for construction 3
3.2 Fundamentals for the quality acceptance 6
4. Earthwork and foundation treatment 9
4.1 General provisions 9
4.2 Construction dewatering and drainage 10
4.3 Trench excavation and support 11
4.4 Foundation treatment 15
4.5 Trench backfill 16
4.6 Acceptance quality level 19
5. Major structures for pipeline with trench installation 23
5.1 General requirements 23
5.2 Pipeline foundation 26
5.3 Steel pipe installation 28
5.4 Anticorrosion inside and outside the steel pipe 32
5.5 Ductile cast iron pipe installation 39
5.6 Installation for reinforced concrete pipe and pre-stressed (self-stressing) concrete pipe 40
5.7 Installation for the prestressed steel cylinder concrete pipe 41
5.8 Installation of glass reinforced plastic pipe 43
5.9 Installation for UPVC, PE and their clad pipe 44
5.10 Acceptance quality level 45
6. The major structure for trenchless installed pipeline 56
6.1 General provisions 56
6.2 Working shaft 61
6.3 Pipe-jacking 65
6.4 Shield 75
6.5 Shallow undercutting method 80
6.6 Directional drill and tamping pipeline 85
6.7 Quality acceptance standard 90
7. Major structures of immersed pipeline and bridging pipeline 112
7.1 General provisions 112
7.2 Immersed pipeline 114
7.3 Bridging pipeline 123
7.4 Acceptance quality level 126
8. Subsidiary structures of pipeline 137
8.1 General provisions 137
8.2 Shaft room 137
8.3 Rest pier 140
8.4 Storm-water overflows 140
8.5 Acceptance quality level 141
9. Function test of pipeline 144
9.1 General provisions 144
9.2 Water pressure test for pressure pipeline 146
9.3 Water obturation test for non-pressure pipeline 151
9.4 Pneumatic pressure test for non-pressure pipelines 153
9.5 Washing and sterilizing of feed-water pipelines 155
Annex A Subitems, Branch and Unit Work Classification of Water and Sewerage Pipeline Works 156
Annex B Quality Inspection Acceptance Record of Subitems, Branch and Unit Works 158
Annex C Pump-in Method Test 166
Annex D Water Obturation Method Test 167
Annex E Pneumatic Method Test 169
Annex F Measurement and Evaluation Method of Concrete Structure Non-pressure Pipeline Water Percolating 172
Annex G Evaluation Method on Appearance Quality Flaw of the Reinforced Concrete Structure 175
Annex H Polyurethane ( PU) Coating 176
Explanation of Wording in this code 179
