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HomeMy WebLinkAboutWPO201100037 Calculations 2023-02-01Glenmore K213 Pond Model 1_13_22 Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 1/13/2023 Summary for Pond 1: Extended Detention Pond K213 Inflow Area = 5.540 ac, 18.59% Impervious, Inflow Depth > 1.30" for 2-yr event Inflow = 9.18 cfs @ 12.11 hrs, Volume= 0.599 of Outflow = 6.74 cfs @ 12.23 hrs, Volume= 0.599 af, Atten= 27%, Lag= 7.1 min Primary = 6.74 cfs @ 12.23 hrs, Volume= 0.599 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs Peak Elev= 299.30' @ 12.23 hrs Surf.Area= 2,060 sf Storage= 4,140 cf Plug -Flow detention time= 6.1 min calculated for 0.599 of (100% of inflow) Center -of -Mass det. time= 6.1 min ( 814.4 - 808.3 ) Volume Invert Avail.Storage Storage Description #1 292.00' 11,657 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 292.00 0 0 0 294.00 141 141 141 295.00 263 202 343 296.00 436 350 693 298.00 1,010 1,446 2,139 300.00 2,621 3,631 5,770 302.00 3,266 5,887 11,657 Device Routing Invert Outlet Devices #1 Primary 290.70' 18.0" Round Culvert L= 87.6' Box, headwall w/3 square edges, Ke= 0.500 Inlet / Outlet Invert= 290.70' / 288.80' S= 0.0217 T Cc= 0.900 n= 0.010, Flow Area= 1.77 sf #2 Device 1 291.90' 6.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 293.56' 1. 0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 1 295.40' 3.0" Vert. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads #5 Device 1 298.60' 6.0" Vert. Orifice/Grate X 5.00 C= 0.600 Limited to weir flow at low heads #6 Device 1 299.20' 3.0" Vert. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads #7 Device 1 299.60' 24.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #8 Secondary 300.10' 26.0' long + 1.0 T SideZ x 14.0' 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) 2.64 2.67 2.70 2.65 2.64 2.65 2.65 2.63 Glenmore K213 Pond Model 1_13_22 Prepared by HP Inc. Type/1 24-hr 10-yr Rainfall=5.43" Printed 1/13/2023 Summary for Pond 1: Extended Detention Pond K213 Inflow Area = 5.540 ac, 18.59% Impervious, Inflow Depth > 2.66" for 10-yr event Inflow = 18.95 cfs @ 12.10 hrs, Volume= 1.228 of Outflow = 18.51 cfs @ 12.13 hrs, Volume= 1.228 af, Atten= 2%, Lag= 1.9 min Primary = 17.68 cfs @ 12.13 hrs, Volume= 1.224 of Secondary = 0.83 cfs @ 12.13 hrs, Volume= 0.004 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs Peak Elev= 300.14' @ 12.13 hrs Surf.Area= 2,666 sf Storage= 6,134 cf Plug -Flow detention time= 5.8 min calculated for 1.227 of (100% of inflow) Center -of -Mass det. time= 5.7 min ( 799.1 - 793.4 ) Volume Invert Avail.Storage Storage Description #1 292.00' 11,657 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 292.00 0 0 0 294.00 141 141 141 295.00 263 202 343 296.00 436 350 693 298.00 1,010 1,446 2,139 300.00 2,621 3,631 5,770 302.00 3,266 5,887 11,657 Device Routing Invert Outlet Devices #1 Primary 290.70' 18.0" Round Culvert L= 87.6' Box, headwall w/3 square edges, Ke= 0.500 Inlet / Outlet Invert= 290.70' / 288.80' S= 0.0217 T Cc= 0.900 n= 0.010, Flow Area= 1.77 sf #2 Device 1 291.90' 6.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 293.56' 1. 0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 1 295.40' 3.0" Vert. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads #5 Device 1 298.60' 6.0" Vert. Orifice/Grate X 5.00 C= 0.600 Limited to weir flow at low heads #6 Device 1 299.20' 3.0" Vert. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads #7 Device 1 299.60' 24.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #8 Secondary 300.10' 26.0' long + 1.0 T SideZ x 14.0' 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) 2.64 2.67 2.70 2.65 2.64 2.65 2.65 2.63 Glenmore K213 Pond Model 1_13_22 Prepared by HP Inc. Type/1 24-hr 100-yr Rainfall=8.90" Printed 1/13/2023 Summary for Pond 1: Extended Detention Pond K213 Inflow Area = 5.540 ac, 18.59% Impervious, Inflow Depth > 5.56" for 100-yr event Inflow = 38.78 cfs @ 12.10 hrs, Volume= 2.567 of Outflow = 38.61 cfs @ 12.11 hrs, Volume= 2.567 af, Atten= 0%, Lag= 0.6 min Primary = 24.22 cfs @ 12.11 hrs, Volume= 2.321 of Secondary = 14.39 cfs @ 12.11 hrs, Volume= 0.246 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs Peak Elev= 300.45' @ 12.11 hrs Surf.Area= 2,765 sf Storage= 6,972 cf Plug -Flow detention time= 5.2 min calculated for 2.565 of (100% of inflow) Center -of -Mass det. time= 5.1 min ( 782.2 - 777.0 ) Volume Invert Avail.Storage Storage Description #1 292.00' 11,657 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 292.00 0 0 0 294.00 141 141 141 295.00 263 202 343 296.00 436 350 693 298.00 1,010 1,446 2,139 300.00 2,621 3,631 5,770 302.00 3,266 5,887 11,657 Device Routing Invert Outlet Devices #1 Primary 290.70' 18.0" Round Culvert L= 87.6' Box, headwall w/3 square edges, Ke= 0.500 Inlet / Outlet Invert= 290.70' / 288.80' S= 0.0217 T Cc= 0.900 n= 0.010, Flow Area= 1.77 sf #2 Device 1 291.90' 6.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 293.56' 1. 0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 1 295.40' 3.0" Vert. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads #5 Device 1 298.60' 6.0" Vert. Orifice/Grate X 5.00 C= 0.600 Limited to weir flow at low heads #6 Device 1 299.20' 3.0" Vert. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads #7 Device 1 299.60' 24.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #8 Secondary 300.10' 26.0' long + 1.0 T SideZ x 14.0' 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) 2.64 2.67 2.70 2.65 2.64 2.65 2.65 2.63 Glenmore K213 Pond Model 1_13_22 Prepared by HP Inc. Type/1 24-hr 100-yr Rainfall=8.90" Printed 1/13/2023 Events for Pond 1: Extended Detention Pond K213 Event Inflow (cfs) Outflow (cfs) Primary (cfs) Secondary (cfs) Elevation (feet) Storage (cubic -feet) 1 inch-24 hour 0.03 0.03 0.03 0.00 292.03 0 1-yr 6.23 3.33 3.33 0.00 298.62 2,927 2-yr 9.18 6.74 6.74 0.00 299.30 4,140 5-yr 14.37 12.93 12.93 0.00 299.93 5,592 10-yr 18.95 18.51 17.68 0.83 300.14 6,134 25-yr 25.93 25.80 21.03 4.77 300.26 6,475 50-yr 32.01 31.86 22.91 8.95 300.35 6,714 100-yr 38.78 38.61 24.22 14.39 300.45 6,972