Laserfiche WebLink
UWA10002 - Alley Ponding <br />Prepared by {enter your company name here} <br />HydroCAD® 9.10 s/n 01542 © 2009 HydroCAD Software Solutions LLC <br />[82] Warning: Early inflow requires earlier time span <br />[57] Hint: Peaked at 870.20' (Flood elevation advised) <br />[87] Warning: Oscillations may require Finer Routing or smaller dt <br />Inflow Area = 0.073 ac,100.00% Impervious, Inflow Depth > 5.18" for 100 -yr event <br />Inflow = 0.64 cfs @ 11.96 hrs, Volume= 0.032 af <br />Outflow = 0.64 cfs @ 11.96 hrs, Volume= 0.032 af, Atten= 0 %, Lag= 0.0 min <br />Primary = 0.64 cfs @ 11.96 hrs, Volume= 0.032 af <br />Routing by Dyn -Stor -Ind method, Time Span= 5.00 -20.00 hrs, dt= 0.01 hrs <br />Peak Elev= 870.20' @ 11.98 hrs <br />Device Routing <br />#1 Primary <br />Primary OutFlow Max =0.45 cfs @ 11.96 hrs HW= 870.10' TW= 870.02' (Dynamic Tailwater) <br />L1= Culvert (Inlet Controls 0.45 cfs @ 1.30 fps) <br />0.7- <br />0.65 <br />0.6- <br />0.55- <br />0.5- <br />0.45- <br />w 0.4- <br />• 0.35- <br />o <br />• 0.3- <br />0.25- <br />0.2 <br />0.15 <br />0.1- <br />0.05- <br />0 -: <br />5 <br />6 <br />Invert <br />Summary for Pond 10P: RD 405B <br />Outlet Devices <br />866.84' 8.0" Round Culvert <br />L= 16.0' CPP, square edge headwall, Ke= 0.500 <br />Inlet / Outlet Invert= 866.84' / 866.68' S= 0.0100'/' Cc= 0.900 <br />n= 0.010 PVC, smooth interior <br />Pond 10P: RD 405B <br />Hydrograph <br />10 11 12 13 14 15 16 <br />Time (hours) <br />Type 11 24-hr 100 -yr Rainfall = 5.90" <br />Printed 12/1/2010 <br />Page 30 <br />17 18 <br />19 20 <br />• Inflow <br />0 Primary <br />