A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seattle Public Utilities has determined that a combined sewer constructed in 1923 is undersized. The sewer is located under a busy street near the core of the City. Approximately 450 feet of the existing clay sewer is 24 inches in diameter, and 1300 feet is 18 inches in diameter. A hydraulic analysis indicated that in order to minimize surcharging and surface flooding, the sewer should be approximately 30 inches in diameter. The depth of the sewer varies from 8 feet to 30 feet. Pipe bursting was considered, but due to the geotechnical conditions and significant upsizing, the risk of encountering difficulty was determined to be excessive. Pipe reaming was selected as the preferred alternative. The length of the sewer to be replaced and the degree of upsizing appears to be on the "cutting edge" of trenchless technology.
Seattle Public Utilities has determined that a combined sewer constructed in 1923 is undersized. The sewer is located under a busy street near the core of the City. Approximately 450 feet of the existing clay sewer is 24 inches in diameter, and 1300 feet is 18 inches in diameter. A hydraulic analysis indicated that in order to minimize surcharging and surface flooding, the sewer should be approximately 30 inches in diameter. The depth of the sewer varies from 8 feet to 30 feet. Pipe bursting was considered, but due to the geotechnical conditions and significant upsizing, the risk of encountering difficulty was determined to be excessive. Pipe reaming was selected as the preferred alternative. The length of the sewer to be replaced and the degree of upsizing appears to be on the "cutting edge" of trenchless technology.
Pipe Reaming in Seattle
Beieler, Roger (author)
Pipelines Conference 2011 ; 2011 ; Seattle, Washington, United States
Pipelines 2011 ; 431-441
2011-07-28
Conference paper
Electronic Resource
English
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