GRE Piping Design and Installation Guide

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Table of Contents
1. Introduction 5
1.2. Systems 5
1.3. Series identification 5
2. Handling of R.T.R.P. material: Transport and storage 6
2.1. Loading 6
2.2. Unloading 7
2.3. Storage of material 8
3. Jointing and preparation methods of Wavistrong 10
3.1. Cutting 10
4. Adhesive bonded joints 11
4.1. Tools for adhesive bonded joints 11
4.2. Machining 11
4.3. Bonding of the joint 12
4.4. Installation time for adhesive bonded joints 14
4.5. Allowable bending radius 14
5. Integral Rubber seal joint (RSJ) and Rubber Seal Lock Joint (RSLJ) 15
5.1. Tools for rubber seal joints 15
5.2. Rubber Seal Joint 15
5.2.1. Rubber Seal Joint (RSJ) with pipe stop 15
5.2.2. Rubber Seal Joint (RSJ) without pipe stop 16
5.2.3. Rubber Seal Lock Joint (RSL J) with pipe stop 18
5.2.4. Rubber Seal Lock Joint (RSL J) without pipe stop 19
5.3. Dimensions of rubber ring and locking strip 21
5.4. Installation time for rubber seal joints 23
5.5. Disassembly of rubber seal joints 24
6. Flanged joints 25
6.1. Tools for flanged joints 25
6.2. Flanged joints 25
6.3. Gaskets and maximum torques 27
6.3.1. Torques for assembly of rubber gaskets with steel insert 27
6.3.2. Torques for assembly of rubber gaskets with supporting ring 28
6.4. Assembly and disassembly of flanged equipment 28
6.5. Determination of the bolt lengths 29
7. Butt and wrap joints 30
7.1. Tools for butt and wrap joints 30
7.2. Cutting and shaving 30
7.3. Mixing 30
7.4. Fit layer 30
7.5. Laminating 31
7.6. Curing 31
8. Mechanical couplers 32
8.1. Tools for mechanical couplers 32
8.2. Mechanical couplers

9. Installation of underground systems 33
9.1. The trench construction 34
9.2. Pipe assembly 36
9.3. Backfilling 38
9.3.1. Other methods of backfilling 39
9.3.2. Pipe systems to be cast in concrete 39
9.4. Subsidence 40
9.5. Relief plates 41
9.6. Installation of underwater mains 42
9.7. Hydrant connections 44
10. Installation of above ground pipe systems 45
10.1. Supports 45
10.1 .1. Protection of the pipe 45
10.1.2. Extra supports 45
10.2. Fixed supports 46
10.3. Pipe clips 48
10.4. Valves 51
10.5. Bellows 53
10.6. Connection to other materials 54
10.7. Algae growth 55
10.8. U.V. resistance 56
10.9. Electrically conductive pipe 56
10.10. Wall penetration and connection to or through walls 57
11. Field test procedure 60
11.1. Filling, saturation and testing 60
11.2. Causes of pressure drop 61
12. Safety precautions

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