CWR4306_Packet_09_master

CWR4306_Packet_09_master - CWR 4306 Urban Stormwater System...

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Lecture Packet 9: Stormwater routing Course website: http://www.ce.ufl.edu/~markn/CWR4306 CWR 4306 – Urban Stormwater System Design
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Routing Methods § Stage vs. storage § Trapezoidal method § Conic method § Stage vs. discharge § Storage routing § Storage indication routing § Numerical integration Stormwater Routing
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Routing – process of analyzing difference between flow entering and leaving a detention structure for a series of time increments Routing requires two types of information: 1. Stage vs. storage (volume) [L3] Relates surface water elevation (stage) to volume of water stored. 2. Stage vs. discharge (flow) [L3/T] Relates surface water elevation (stage) to corresponding outflow. Stormwater Routing
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Stage vs. Storage There are various methods for determining stage-storage relationships depending on shape of pond Trapezoidal method (average end area) Conic method Numerical integration
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Stage versus storage (volume) Stage – water depth (elevation), h [L] Storage volume – volume of water in detention system (pond), S [L3]
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CWR4306_Packet_09_master - CWR 4306 Urban Stormwater System...

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