Piping

Abstract

This chapter provides information on the types of pipes, fittings, and associated materials commonly used in pumping stations and gives detail on transmission mains for the pressurized flow of water, wastewater, and sludge, emphasizing pipe 100 mm (4 in.) in diameter or larger, but small pipe for fuel, seal water, and plumbing is included. One of the types of pipes is exposed pipe and several factors that need to be considered in the selection of exposed pipe (whether exposed or buried) include properties of the fluid, service conditions, properties of the pipe, and economics such as required life, maintenance, cost (fob plus freight to job site), repairs, and salvage value. Another type is buried piping that must resist internal pressure, external loads, differential settlement, and the corrosive action of soils. the profile, the velocity of flow, and the size and stiffness of the pipe all affect water hammer, and thus, they affect the design of the pumping station itself as well as that of the force main. Another is ductile iron pipe, which has a Brinell hardness of about 165 and a special abrasion-resistant ductile iron pipe for conveying slurry and grit is available from several manufacturers. Gaskets for ductile iron push-on and mechanical joints described in AWWA C111 are vulcanized natural or vulcanized synthetic rubber. Natural rubber is suitable for water pipelines but deteriorates when exposed to wastewater or sludge. © 2008 Elsevier Ltd All rights reserved.

Department(s)

Civil, Architectural and Environmental Engineering

International Standard Book Number (ISBN)

978-185617513-5

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

01 Dec 2008

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