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HomeMy WebLinkAboutApplication Files_82693_pg0872 72189 PR Type 111 24-hr 100-Year Storm Rainfall=6.90" Prepared by VHB Printed 3/9/2010 HydroCADO 9.00 s/n 01237 ©2009 HydroCAD Software Solutions LLC Page 13 Center-of-Mass det. time= 121.8 min ( 917.4 - 795.6 ) Volume Invert Avail.Storage Storage Description #1 58.00' 7,342 cf Custom Stage Data (Irregular)Listed below(Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 58.00 1,273 248.0 0 0 1,273 59.00 2,048 268.0 1,645 1,645 2,134 60.00 2,879 286.0 2,452 4,097 2,974 60.60 8,421 362.0 3,245 7,342 6,898 Device Routing Invert Outlet Devices #1 Discarded 58.00' 5.000 in/hr Exfiltration over Surface area #2 Primary 60.60' 30.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 ' 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 ' Discarded OutFlow Max=0.91 cfs @ 12.56 hrs HW=60.55' (Free Discharge) t1=Exfiltration (Exfiltration Controls 0.91 cfs) ' Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=58.00' TW=55.00' (Dynamic Tailwater) t2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) ' Summary for Pond P1 F: Collection Basin 2 Inflow Area = 3.895 ac, 54.39% Impervious, Inflow Depth = 4.71" for 100-Year Storm event Inflow _ 17.01 cfs @ 12.17 hrs, Volume= 1.529 of Outflow 13.74 cfs @ 12.27 hrs, Volume= 1.529 af, Atten= 19%, Lag= 6.0 min Discarded = 0.45 cfs @ 12.27 hrs, Volume= 0.437 of ' Primary = 13.29 cfs @ 12.27 hrs, Volume= 1.093 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs ' Peak Elev= 61.00'@ 12.27 hrs Surf.Area= 3,885 sf Storage= 6,796 cf Plug Flow detention time 43.6 min calculated for 1.528 of(100% of inflow) Center-of-Mass det. time=43.8 min ( 856.2 - 812.4 ) ' Volume Invert Avail.Storage Storage Description #1 58.00' 6,796 cf Custom Stage Data (Prismatic)Listed below(Recalc) ' Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 58.00 906 0 0 59.00 1,691 1,299 1,299 60.00 2,709 2,200 3,499 61.00 3,885 3,297 6,796