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Andrew Scott, P.E., M.ASCE


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RE: Mannings Roughness Coefficient (n) for Woods (Light Underbrush vs. Dense Underbrush)

Posted By Andrew Scott 10-09-2020 10:05 AM
Found In Egroup: Environment, Coasts, Oceans, & Infrastructure \ view thread
Try: https://pubs.er.usgs.gov/publication/wsp2339 ------------------------------ Andrew Scott P.E., M.ASCE Virginia Departement of Transportation Suffolk VA ------------------------------

RE: Cleaning and Relining Pipes vs. Replacement

Posted By Andrew Scott 07-30-2018 10:04 AM
Found In Egroup: Environment, Coasts, Oceans, & Infrastructure \ view thread
Lining can be effective if there are no collapsed or badly broken sections where the flow area is already reduced. Also, the act of cleaning the pipe, in preparation for lining, can cause some existing damage to get worse. If you have to perform repairs before lining a DI pipe of this age, you will find ...