Laserfiche WebLink
C:�Program Files�HydroCAD�Projects�FiydroCAD ProjectsW8 JOBS\ <br /> 081756 Barry Sewall Proposed Conditions Type 1124-hr 10 Year Rainfa11=4.20" <br /> Prepared by Gronberg &Associates, Inc. Page 9 <br /> HydroCAD�8.00 s/n 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM <br /> Subcatchment A1: Area 1 <br /> Runoff = 1.12 cfs @ 12.04 hrs, Volume= 0.063 af, Depth> 0.71" <br /> Runoff by SCS TR-20 method, UH=SCS,Time Span= 5.00-20.00 hrs, dt=0.05 hrs <br /> Type II 24hr 10 Year Rainfa11=4.20" <br /> Area (ac) CN Description <br /> 0.080 98 Paved parking&roofs <br /> 0.050 61 >75%Grass cover, Good, HSG B <br /> 0.930 55 Woods, Good, HSG B <br /> 1.060 59 Weighted Average <br /> 0.980 Pervious Area <br /> 0.080 Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (ft/ft) (ft/sec) (cfs) <br /> 10.0 Direct Er�try, <br /> Subcatchment A2: Area 2 <br /> Runoff = 0.83 cfs� 12.04 hrs, Volume= 0.047 af, Depth> 0.66" <br /> Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt=0.05 hrs <br /> Type II 24hr 10 Year Rainfa11=420" <br /> Area(ac) CN Description <br /> 0.020 98 Paved parking 8�roofs <br /> 0.240 61 >75% Grass cover, Go�, HSG B <br /> 0.600 55 Woods, Good, HSG B <br /> 0.860 58 Weighted Average <br /> 0.840 Pervious Area <br /> O.Q20 Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (ft/ft) (ft/sec) (cfs) <br /> 10.0 Direct Er�try, <br /> Subcatchmerrt A3: Area 3 <br /> Runoff = 2.85 cfs @ 12.05 hrs, Volume= 0.154 af, Depth> 1.32" <br /> Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt=0.05 hrs <br /> Type II 24-hr 10 Year Rainfa11=4.20" <br />