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Index Hall Replacement: Building Site Flow Control Calculations <br /> Element Flows To: <br /> Surface Interflow Groundwater <br /> Conveyance Areas#1-8 are tributary to the Gravel <br /> Name : Gravel Trench Bed 2 Trench Bed 2, labeled as Detention/Infiltration Pipe <br /> Bottom Length: 7 oft. on the Conveyance Basin Map (Exhibit A-6). <br /> Bottom Width : 5ft. <br /> Trench bottom slope 1: 0.01 To 1 The Detention/Infiltration Pipe is modeled as a <br /> Trench Left side slope 0: 0 To 1 <br /> Trench right side slope 2: 0 To 1 gravel trench. <br /> Material thickness of first layer : 3 <br /> Pour Space of material for first layer : 0. 65 <br /> Material thickness of second layer : 1 <br /> Pour Space of material for second layer : 0.33 <br /> Material thickness of third layer : 0 <br /> Pour Space of material for third layer : 0 <br /> Infiltration On <br /> Infiltration rate : 0.1 <br /> Infiltration saftey factor : 1 <br /> Discharge Structure <br /> Riser Height: 3.5 ft. <br /> Riser Diameter: 8 in. <br /> Element Flows To: <br /> Outlet 1 Outlet 2 <br /> Gravel Trench Bed Hydraulic. Table <br /> Stage(ft) Area(acr) Volume(acr-ft) Dschrg(cfs) Infilt(cfs) <br /> 0.000 0.008 0.000 0.000 0.000 <br /> 0.044 0.008 0.000 0.000 0.001 <br /> 0.089 0.008 0.000 0.000 0.001 <br /> 0.133 0.008 0.001 0.000 0.001 <br /> 0. 178 0.008 0.001 0.000 0.001 <br /> 0.222 0.008 0.001 0.000 0.001 <br /> 0.267 0.008 0.001 0.000 0.001 <br /> 0.311 0.008 0.002 0.000 0.001 <br /> 0.356 0.008 0.002 0.000 0.001 <br /> 0.400 0.008 0.002 0.000 0.001 <br /> 0.444 0.008 0.002 0.000 0.001 <br /> 0.489 0.008 0.003 0.000 0.001 <br /> 0.533 0.008 0.003 0.000 0.001 <br /> 0.578 0.008 0.003 0.000 0.001 <br /> 0.622 0.008 0.003 0.000 0.001 <br /> 0.667 0.008 0.003 0.000 0.001 <br /> 0.711 0.008 0.004 0.000 0.001 <br /> 0.756 0.008 0.004 0.000 0.001 <br /> 0.800 0.008 0.004 0.000 0.001 <br /> 0.844 0.008 0.004 0.000 0.001 <br /> 0.889 0.008 0.005 0.000 0.001 <br /> 0.933 0.008 0.005 0.000 0.001 <br /> 0. 978 0.008 0.005 0.000 0.001 <br /> 5 B-1 <br />