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Home My WebLink AboutApplication Files_85048_pg0215 ' POST DEVELOPMENT- DPI 2007-058 Jones-POST 131 Type ///24-hr 10-year Rainfall=4.70" Prepared by J.R. Russo &Associates Printed 12/27/2010 ' HydroCAD®8.50 s/n 002386 OO 2007 HydroCAD Software Solutions LLC Page 1 2 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.5 100 0.0340 0.14 Sheet Flow, Grass: Dense n= 0.240 P2= 3.20" 0.5 38 0.0340 1.29 Shallow Concentrated Flow, Short Grass Pasture Kv=7.0 fps 0.7 176 0.0050 4.03 4.95 Circular Channel (pipe), Diam= 15.0" Area= 1.2 sf Perim=3.9' r= 0.31' n= 0.012 1.0 318 0.0050 5.52 17.33 Circular Channel(pipe), Diam= 24.0" Area=3.1 sf Perim= 6.3' r= 0.50' n= 0.012 13.7 632 Total Summary for Subcatchment 10: To Upper Swale ' Runoff = 10.85 cfs @ 12.07 hrs, Volume= 0.848 af, Depth= 4.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-80.00 hrs, dt= 0.01 hrs Type III 24-hr 10-year Rainfall=4.70" Area (ac) CN Description 2.280 98 Paved parking &roofs 2.280 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment 11: To Upper Basin #5 Runoff = 6.38 cfs @ 12.07 hrs, Volume= 0.498 af, Depth= 4.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-80.00 hrs, dt= 0.01 hrs Type III 24-hr 10-year Rainfall=4.70" iArea (ac) CN Description 1.340 98 Paved parking &roofs 1.340 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment 12: To Basin#5 Runoff = 7.30 cfs @ 12.22 hrs, Volume= 0.758 af, Depth= 3.90" ' Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-80.00 hrs, dt= 0.01 hrs Type III 24-hr 10-year Rainfall=4.70"