Hunter, Christodoulou, Greaves, Bowman, Bott
New Successes & New Solutions # 2004 Milan
The development of a pipe system designed to transport potable water through contaminated ‘brown-field land’ is described. The system is based around a multi-layer, aluminium reinforced PE pipe, and includes a full range of specially designed mechanical fittings to provide the end user with a total system solution. We report on the materials selection and design of the multi-layer pipe, and on the long-term strength of these pipes. This allows for the hydrostatic safety factor to be identified, which is found to be significantly above the value for conventional solid wall PE pipes. This is considered necessary for this demanding application.
Fittings design is crucial to the correct functioning of the total system, and the authors detail the key design features of the three styles of fittings
- Screw compression fittings for the smaller diameters.
- Novel compression fittings for the larger diameters.
- An innovative tapping tee, for service pipe connections.
Details of selected initial field trials will be presented to highlight a pipe system to expand the use of plastics at the expense of the currently used copper and ferrous-based pipe systems.