9 Petersham Road, Richmond, sewer failure

Much attention has been focused on the need for sewer renovation and rehabilitation of old sewerage systems, but age is not always the reason for sewer failure. Serious problems of performance have also been encountered on sewerage schemes less than 10 years old. This paper considers the problems of groundwater infiltration into new foul sewers, and suggests that deficiencies might exist in some aspects of modern sewer design and construction.Infiltration is most frequently observed at sewer joints. Results are presented of laboratory tests which show the ability of flexible fixed-ring joints on clay sewers to withstand both internal and external pressures. Damaged polyester fairings on the spigots of these pipes can act as one-way valves, and massive infiltration may result. The standard site water test is shown to be inadequate in detecting some of these types of defect which may result from damaged pipes or poor workmanship.

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9 Petersham Road, Richmond, sewer failure

Cited by 2 publications

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Factors influencing the structural deterioration and collapse of rigid sewer pipes

Factors influencing the structural deterioration and collapse of rigid sewer pipes

Excluding Groundwater Infiltration into New Sewers

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