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HomeMy WebLinkAboutApplication Files_85048_pg0197 PRE-DEVELOPMENT DRAINAGE 2007-058 Jones-PRE Type/1/24-hr 10 year Rainfall=4.70" Prepared by J.R. Russo &Associates Printed 1 2/1 11201 0 HydroCAD®8.50 s/n 002386 0 2007 HydroCAD Software Solutions LLC Page 7 Routing by Stor-Ind+Trans method, Time Span= 1.00-72.00 hrs, dt= 0.01 hrs Max. Velocity=3.99 fps, Min. Travel Time= 5.2 min Avg. Velocity= 1.75 fps, Avg. Travel Time= 11.9 min Peak Storage=761 cf @ 12.58 hrs, Average Depth at Peak Storage= 0.57' Bank-Full Depth= 1.50', Capacity at Bank-Full=8.05 cfs 18.0" Diameter Pipe, n= 0.012 Length= 1,250.0' Slope=0.0050 T Inlet Invert=82.85', Outlet Invert=76.60' 4 1 Summary for Pond DPI: Design Point#1 Inflow Area = 57.400 ac, 18.66% Impervious, Inflow Depth= 1.99" for 10-year event 1 Inflow _ 30.17 cfs @ 13.28 hrs, Volume= 9.524 of Outflow 30.17 cfs @ 13.28 hrs, Volume= 9.524 af, Atten= 0%, Lag= 0.0 min Primary = 30.17 cfs @ 13.28 hrs, Volume= 9.524 of Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 82.15' @ 13.28 hrs Flood Elev= 81.50' Device Routing Invert Outlet Devices #1 Primary 75.80' 24.0" x 234.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert=74.44' S= 0.0058 'P Cc=0.900 n= 0.012 Primary OutFlow Max=30.17 cfs @ 13.28 hrs HW=82.15' (Free Discharge) t--1=Culvert (Barrel Controls 30.17 cfs @ 9.60 fps) ' Summaryfor Pond DP2: Design Point#2 g Inflow Area = 18.070 ac, 8.69% Impervious, Inflow Depth = 0.89" for 10-year event Inflow = 5.50 cfs @ 13.06 hrs, Volume= 1.342 of Primary = 5.50 cfs @ 13.06 hrs, Volume= 1.342 af, Atten= 0%, Lag=0.0 min Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.01 hrs