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Design Considerations for Use of Wedge Wire Screens at Surface Water Intake Structures

by Mahmood Naghash, Bechtel Corp, Gaithersburg, United States,
Adnan M. Alsaffar, Bechtel Corp, Gaithersburg, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

This paper provides the suggested guidelines for design, construction, operation and maintenance of wedge-shaped wire cylindrical screens used for aquatic biota and trash and debris screening at surface water intake structures. The guidelines include: proper application of the screen slot size, the optimum screen flow-through velocity, effect of water-level variations, hydraulics of the screen, preferred design concepts, screen cleaning mechanism, and problems limiting the operation and maintenance of screens, and methods for minimizing their effect.

Subject Headings: Water intakes | Surface water | Hydraulic design | Water level | Maintenance and operation | Hydraulic structures | Fluid velocity

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