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HomeMy WebLinkAboutApplication Files_82693_pg0869 72189 PR Type Ill 24-hr 100-Year Storm Rainfall=6.90" Prepared by VHB Printed 3/9/2010 HydroCAD®9.00 s/n 01237 ©2009 HydroCAD Software Solutions LLC Page 10 ' Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 60.00 5,113 319.0 0 0 5,113 61.00 9,672 461.0 7,272 7,272 13,936 62.00 14,833 506.0 12,161 19,433 17,432 ' Device Routing Invert Outlet Devices #1 Discarded 60.00' 25.000 in/hr Exfiltration over Surface area #2 Primary 59.00' 12.0" Round Culvert ' L= 75.0' CPP, square edge headwall, Ke= 0.500 Outlet Invert= 58.50' S= 0.00677' Cc= 0.900 n= 0.012 Steel, smooth ' Discarded OutFlow Max=0.00 cfs @ 12.36 hrs HW=60.00' (Free Discharge) t1=Exfiltration (Passes 0.00 cfs of 2.96 cfs potential flow) ' Primary OutFlow Max=0.00 cfs @ 12.37 hrs HW=60.00' TW=59.39' (Dynamic Tailwater) L2=Culvert (Passes 0.00 cfs of 2.27 cfs potential flow) ' Summary for Pond P1 B: Existing Infiltration Area [87] Warning: Oscillations may require Finer Routing or smaller dt Inflow Area = 2.973 ac, 26.52% Impervious, Inflow Depth = 2.61" for 100-Year Storm event Inflow = 8.72 cfs @ 12.09 hrs, Volume= 0.648 of Outflow = 4.07 cfs @ 12.30 hrs, Volume= 0.651 af, Atten= 53%, Lag= 12.1 min Discarded = 4.07 cfs @ 12.30 hrs, Volume= 0.651 of Primary 0.00 cfs @ 0.00 hrs, Volume= 0.000 of ' Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 59.40'@ 12.30 hrs Surf.Area= 7,034 sf Storage= 2,718 cf ' Plug-Flow detention time=(not calculated: outflow precedes inflow) Center-of-Mass det. time=3.1 min ( 835.8 - 832.7 ) Volume Invert Avail.Storage Storage Description ' #1 59.00' 28,983 cf Custom Stage Data (Irregular)-isted below(Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 59.00 6,472 314.0 0 0 6,472 60.00 7,910 360.0 7,179 7,179 8,962 ' 61.00 11,264 653.0 9,538 16,717 32,587 62.00 13,296 452.0 12,266 28,983 50,270 ' Device Routing Invert Outlet Devices #1 Discarded 59.00' 25.000 in/hr Exfiltration over Surface area #2 Primary 60.50' 6.0' long x 70.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 ' Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63