Design of Street Sump Inlet
Publication: Journal of Hydraulic Engineering
Volume 135, Issue 11
Abstract
Sump inlets are used to collect storm water on the streets or to release stored water in detention basins. The complication in sump inlet hydraulics arises in the transition from weir to orifice flow regimes. Conventionally, the capacity of a sump inlet has been assumed to be either weir or orifice flow, whichever is smaller for a given water depth. Although this practice might not result in a failure to the storm drain, it has led to randomly oversized or undersized inlets. This paper presents a laboratory investigation of the interception capacities of several different types of sump inlets, including bar and vane grates, and 3- and 5-ft curb opening inlets. The observed data revealed significant differences from the recommended HEC 22 design procedure. In this study, new formulas and procedures are developed with the coefficients calibrated by the laboratory data.
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References
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 135 • Issue 11 • November 2009
Pages: 1000 - 1004
Copyright
© 2009 ASCE.
History
Received: Nov 23, 2007
Accepted: Apr 29, 2009
Published online: May 2, 2009
Published in print: Nov 2009
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