BS CP312-1(1973) : 1973

Code Drafting Committee
Foreword
1. General
1.1 Scope
2. Definitions
3. Materials available
4. Hydraulic characteristics
5. Handling and storage
6. Thermal effects
7. Environment
8. Long-term behaviour under hydraulic pressure
9. Inspection
10. Installation
11. Jointing methods
12. Bending
13. Connections
14. Identification
15. Laying buried pipes
15.1 General principles
15.2 Trench preparation
15.3 Bedding and sidefilling
15.4 Backfilling
15.5 Pipelaying without trenches
16. Testing
17. Limitations
18. Pipes for water
18.1 General
18.2 PVC
18.3 Polyethylene
18.4 Polypropylene
18.5 ABS
19. Pipes for soil, waste, rainwater and trade
      effluents (above ground)
20. Pipes for gases
20.1 Gaseous fuels
20.2 Industrial gases
21. Pipes for food and drink other than water
22. Pipes for general industrial applications
      (excluding gases)
Appendix
A. Tests for suitability of soil material (imported
      or local) for surrounding buried plastics pipes
Tables
1. Physical properties of plastics pipe materials
2a. Chemical resistance of unplasticized PVC, low-
      density and high-density polytheylene
2b. Chemical resistance of modified (high impact) PVC,
      ABS, nylon and polypropylene

Describes the selection of thermoplastics pipe systems for particular applications and with the general principles applicable to all such systems. The use of plastics pipes in services supplied from the mains of water undertakings is governed by the byelaws of the undertakings and these shall be strictly observed. Although pipes of polyethylene are not easily fractured by freezing, the flow of water may be stopped, and therefore precautions should be taken as for pipes of other materials. Covers definitions, materials available, hydraulic characteristics, handling and storage, thermal effects, environment, long-term behaviour under hydraulic pressure and more.