Evaluation of Long Term Performance the Behaviour of Buried Pipes

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Monitoring of buried PVCu and thin wall biaxially oriented pipe at Chorley and York has shown that loads and deformations of the pipe are predominately generated during installation and that subsequent transient traffic loads produce no permanent changes. Measurements of backfill temperatures have shown long time lags between changes in surface temperature and those at pipe depths. Data from monitoring pipe laid at shallow depths and from laboratory tests have demonstrated that water temperature dominates the pipe environment. The site measurements show no evidence of freezing in mains laid with 750mm cover. Projections show that very prolonged periods of cold weather would be required to freeze water in plastics mains. The behaviour of shallow service pipes is being monitored.



UKWIR Reference :- 99/WM/02/12Published Date :- 17/04/2002
Retail Price (£) :- 11ISBN :- 1 84057 155 1