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HomeMy WebLinkAbout2021/08/09 - Revised HydroCAD Report - 325 Johnson Street Roof Area Of Galoage 1 P 1 , 000 Gallon r we w 0 30 If stone surrounding Subcat Reach Pon Link Drainage Diagram for 325 Johnson Street, NA Prepared by Sullivan Engineering Group, LLC 8/9/2021 HydroCAD®7.00 s/n 001433 ©1986-2003 Applied Microcomputer Systems 325 Johnson Street, NA Type/1/ 24-hr 2 Year Storm Rainfall=3.18" Prepared by Sullivan Engineering Group, LLC Page 2 HydroCAD®7.00 s/n 001433 © 1986-2003 Applied Microcomputer Systems 8/9/2021 Time span=5.00-24.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 S: Roof Area of Proposed Garage Runoff Area=720 sf Runoff Depth=2.89" Tc=6.0 min CN=98 Runoff=0.05 cfs 0.004 of Pond 1 P: 1,000 Gallon Drywell w/ 30" stone surPeak Elev=254.64' Storage=68 cf Inflow=0.05 cfs 0.004 of Outflow=0.00 cfs 0.004 of Total Runoff Area = 0.017 ac Runoff Volume = 0.004 of Average Runoff Depth = 2.89" 325 Johnson Street, NA Type 11124-hr 2 Year Storm Rainfall=3.18" Prepared by Sullivan Engineering Group, LLC Page 3 HydroCADO 7.00 s/n 001433 O 1986-2003 Applied Microcomputer Systems 8/9/2021 Subcatchment 1S: Roof Area of Proposed Garage Runoff = 0.05 cfs @ 12.09 hrs, Volume= 0.004 af, Depth= 2.89" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Storm Rainfall=3.18" Area (sf) CN Description 720 98 Roof Area of Prop. Garage Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Roof Area of Proposed Garage Hydrograph 0.055 El Runoff 0.05 cfs 0.05 Type III 24-hr 2 Year Storm 0.045 Rainfall=3.18" 0.04 Runoff Area=720 sf 0.035 Runoff Volume=0.004 of Runoff Depth=2.89" 0.03 3 Tc=6.0 min LL 0.025 CN=98 0.02 0.015 0.01 0.005 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) 325 Johnson Street, NA Type/1/ 24-hr 2 Year Storm Rainfall=3.18" Prepared by Sullivan Engineering Group, LLC Page 4 HydroCAD®7.00 s/n 001433 © 1986-2003 Applied Microcomputer Systems 8/9/2021 Pond 1 P: 1,000 Gallon Drywell w/ 30" stone surrounding Sandy Loam - Rawl's Rate 1.02 in/hr) Inflow Area = 0.017 ac, Inflow Depth = 2.89" for 2 Year Storm event Inflow = 0.05 cfs @ 12.09 hrs, Volume= 0.004 of Outflow = 0.00 cfs @ 11.25 hrs, Volume= 0.004 af, Atten= 92%, Lag= 0.0 min Discarded = 0.00 cfs @ 11.25 hrs, Volume= 0.004 of Routing by Stor-Ind method, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 254.64' @ 13.12 hrs Surf.Area= 165 sf Storage= 68 cf Plug-Flow detention time= 137.5 min calculated for 0.004 of(100% of inflow) Center-of-Mass det. time= 136.1 min ( 902.0 - 765.9 ) # Invert Avail.Storage Storage Description 1 253.80' 164 cf 10.67'W x 15.50'L x 3.50'H Prismatoid 579 cf Overall - 168 cf Embedded = 410 cf x 40.0% Voids 2 254.30' 168 cf 5.67'W x 10.50'L x 2.83'H Prismatoid Inside #1 333 cf Total Available Storage # Routing Invert Outlet Devices 1 Discarded 0.00' 0.001400 fpm Exfiltration over entire Surface area Discarded OutFlow Max=0.00 cfs @ 11.25 hrs HW=253.84' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.00 cfs) Pond 1 P: 1,000 Gallon Drywell w/ 30" stone surrounding Hydrograph EM Inflow 0.055 0.05 cfs IM Discarded Infl ow Area=O.0 17 ac 0.05 0.045 Peak Elev=254.64' 0.04 Storage=68 cf 0.035 U 0.03 3 ° 0.025 0.02 0.015 0.01 0.00 cfs 0.005 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) 325 Johnson Street, NA Type 111 24-hr 10 Year Storm Rainfall=5.03" Prepared by Sullivan Engineering Group, LLC Page 5 HydroCAD®7.00 s/n 001433 © 1986-2003 Applied Microcomputer Systems 8/9/2021 Time span=5.00-24.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 S: Roof Area of Proposed Garage Runoff Area=720 sf Runoff Depth=4.66" Tc=6.0 min CN=98 Runoff=0.08 cfs 0.006 of Pond 1 P: 1,000 Gallon Drywell w/ 30" stone suPeak Elev=255.28' Storage=133 cf Inflow=0.08 cfs 0.006 of Outflow=0.00 cfs 0.005 of Total Runoff Area = 0.017 ac Runoff Volume = 0.006 of Average Runoff Depth = 4.66" 325 Johnson Street, NA Type 11124-hr 10 Year Storm Rainfall=5.03" Prepared by Sullivan Engineering Group, LLC Page 6 HydroCADO 7.00 s/n 001433 O 1986-2003 Applied Microcomputer Systems 8/9/2021 Subcatchment 1S: Roof Area of Proposed Garage Runoff = 0.08 cfs @ 12.09 hrs, Volume= 0.006 af, Depth= 4.66" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs Type III 24-hr 10 Year Storm Rainfall=5.03" Area (sf) CN Description 720 98 Roof Area of Prop. Garage Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Roof Area of Proposed Garage Hydrograph 0.085 Runoff 0.08 cfs 0.08 Type III 24-hr 10 Year Storm 0.075 0.07 Rainfall=5.03" 0.065 Runoff Area=720 sf 0.06 Runoff Volume=0.006 of 0.055 Runoff Depth=4.66" N 0.05 3 0.045 Tc=6.0 m i n LL 0.04 CN=98 0.035 0.03 0.025 0.02 0.015 0.01 0.005 IRE 02A2125. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) 325 Johnson Street, NA Type/1/ 24-hr 10 Year Storm Rainfall=5.03" Prepared by Sullivan Engineering Group, LLC Page 7 HydroCAD®7.00 s/n 001433 © 1986-2003 Applied Microcomputer Systems 8/9/2021 Pond 1 P: 1,000 Gallon Drywell w/ 30" stone surrounding Sandy Loam - Rawl's Rate 1.02 in/hr) Inflow Area = 0.017 ac, Inflow Depth = 4.66" for 10 Year Storm event Inflow = 0.08 cfs @ 12.09 hrs, Volume= 0.006 of Outflow = 0.00 cfs @ 10.15 hrs, Volume= 0.005 af, Atten= 95%, Lag= 0.0 min Discarded = 0.00 cfs @ 10.15 hrs, Volume= 0.005 of Routing by Stor-Ind method, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 255.28' @ 14.34 hrs Surf.Area= 165 sf Storage= 133 cf Plug-Flow detention time= 252.4 min calculated for 0.005 of(82% of inflow) Center-of-Mass det. time= 180.8 min ( 942.8 - 762.0 ) # Invert Avail.Storage Storage Description 1 253.80' 164 cf 10.67'W x 15.50'L x 3.50'H Prismatoid 579 cf Overall - 168 cf Embedded = 410 cf x 40.0% Voids 2 254.30' 168 cf 5.67'W x 10.50'L x 2.83'H Prismatoid Inside #1 333 cf Total Available Storage # Routing Invert Outlet Devices 1 Discarded 0.00' 0.001400 fpm Exfiltration over entire Surface area Discarded OutFlow Max=0.00 cfs @ 10.15 hrs HW=253.84' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.00 cfs) Pond 1 P: 1,000 Gallon Drywell w/ 30" stone surrounding Hydrograph EM Inflow 0.085 0.08 cfs IM Discarded 0.08 I of I ow Area=O.0 17 ac 0.075 0.07 Peak Elev=255.28' 0.065 Storage=133 cf 0.06 0.055 0.05 U 0.045 ° 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.00 cfs 0.005 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) 325 Johnson Street, NA Type/1/ 24-hr 25 Year Storm Rainfall=6.19" Prepared by Sullivan Engineering Group, LLC Page 8 HydroCAD®7.00 s/n 001433 © 1986-2003 Applied Microcomputer Systems 8/9/2021 Time span=5.00-24.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 S: Roof Area of Proposed Garage Runoff Area=720 sf Runoff Depth=5.77" Tc=6.0 min CN=98 Runoff=0.10 cfs 0.008 of Pond 1 P: 1,000 Gallon Drywell w/ 30" stone suPeak Elev=255.74' Storage=180 cf Inflow=0.10 cfs 0.008 of Outflow=0.00 cfs 0.005 of Total Runoff Area = 0.017 ac Runoff Volume = 0.008 of Average Runoff Depth = 5.77" 325 Johnson Street, NA Type 11124-hr 25 Year Storm Rainfall=6.19" Prepared by Sullivan Engineering Group, LLC Page 9 HydroCADO 7.00 s/n 001433 O 1986-2003 Applied Microcomputer Systems 8/9/2021 Subcatchment 1 S: Roof Area of Proposed Garage Runoff = 0.10 cfs @ 12.09 hrs, Volume= 0.008 af, Depth= 5.77" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs Type III 24-hr 25 Year Storm Rainfall=6.19" Area (sf) CN Description 720 98 Roof Area of Prop. Garage Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1 S: Roof Area of Proposed Garage Hydrograph 0.105 Runoff 0.10 cfs 0.1 0.095 Type III 24-hr 25 Year Storm 0.09 Rainfall=6.19" 0.085 0.08 Runoff Area=720 sf 0.075 0.07 Runoff Volume=0.008 of 0o 06 Runoff Depth=5.77" 3 0.055 TC=6.0 m i n .2 0.05 LL 0.045 CN=98 0.04 0.035 0.03 0.025 0.02 0.015 0.01 � 0.005 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) 325 Johnson Street, NA Type 111 24-hr 25 Year Storm Rainfall=6.19" Prepared by Sullivan Engineering Group, LLC Page 10 HydroCAD®7.00 s/n 001433 © 1986-2003 Applied Microcomputer Systems 8/9/2021 Pond 1 P: 1,000 Gallon Drywell w/ 30" stone surrounding Sandy Loam - Rawl's Rate 1.02 in/hr) Inflow Area = 0.017 ac, Inflow Depth = 5.77" for 25 Year Storm event Inflow = 0.10 cfs @ 12.09 hrs, Volume= 0.008 of Outflow = 0.00 cfs @ 9.40 hrs, Volume= 0.005 af, Atten= 96%, Lag= 0.0 min Discarded = 0.00 cfs @ 9.40 hrs, Volume= 0.005 of Routing by Stor-Ind method, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 255.74' @ 15.10 hrs Surf.Area= 165 sf Storage= 180 cf Plug-Flow detention time= 258.7 min calculated for 0.005 of(68% of inflow) Center-of-Mass det. time= 166.0 min ( 926.9 - 760.9 ) # Invert Avail.Storage Storage Description 1 253.80' 164 cf 10.67'W x 15.50'L x 3.50'H Prismatoid 579 cf Overall - 168 cf Embedded = 410 cf x 40.0% Voids 2 254.30' 168 cf 5.67'W x 10.50'L x 2.83'H Prismatoid Inside #1 333 cf Total Available Storage # Routing Invert Outlet Devices 1 Discarded 0.00' 0.001400 fpm Exfiltration over entire Surface area Discarded OutFlow Max=0.00 cfs @ 9.40 hrs HW=253.84' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.00 cfs) Pond 1 P: 1,000 Gallon Drywell w/ 30" stone surrounding Hydrograph EM Inflow 0.1 O cfs IM Discarded 0.105 0.1 1 nfl ow Area=O.0 17 ac 0.095 0.09 Peak Elev=255.74' 0.085 0.08 Storage=1 80 cf 0.075 0.07 0.065 4 0.06 0.055 0 0.05 U_0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.00 cfs 0.005 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) 325 Johnson Street, NA Type 11124-hr 100 Year Storm Rainfall=7.98" Prepared by Sullivan Engineering Group, LLC Page 11 HydroCAD®7.00 s/n 001433 © 1986-2003 Applied Microcomputer Systems 8/9/2021 Time span=5.00-24.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 S: Roof Area of Proposed Garage Runoff Area=720 sf Runoff Depth=7.47" Tc=6.0 min CN=98 Runoff=0.13 cfs 0.010 of Pond 1 P: 1,000 Gallon Drywell w/ 30" stone suPeak Elev=256.52' Storage=259 cf Inflow=0.13 cfs 0.010 of Outflow=0.00 cfs 0.006 of Total Runoff Area = 0.017 ac Runoff Volume = 0.010 of Average Runoff Depth = 7.47" 325 Johnson Street, NA Type 11124-hr 100 Year Storm Rainfall=7.98" Prepared by Sullivan Engineering Group, LLC Page 12 HydroCADO 7.00 s/n 001433 O 1986-2003 Applied Microcomputer Systems 8/9/2021 Subcatchment 1 S: Roof Area of Proposed Garage Runoff = 0.13 cfs @ 12.09 hrs, Volume= 0.010 af, Depth= 7.47" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs Type III 24-hr 100 Year Storm Rainfall=7.98" Area (sf) CN Description 720 98 Roof Area of Prop. Garage Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1 S: Roof Area of Proposed Garage Hydrograph 0.14 Runoff 0.13 0.13 cfs 10 Type III 24-hr 100 Year Storm 0.12 Rainfall=7.98" 0.11 Runoff Area=720 sf 0.1 Runoff Volume=0.010 of 0.09 y Runoff Depth=7.47" o.os Tc=6.0 min 3 0.07 s CN=98 LL 0.06 0.05 0.04 0.03 0.02 0.01 0 U U 11111111 111, 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) 325 Johnson Street, NA Type 111 24-hr 100 Year Storm Rainfall=7.98" Prepared by Sullivan Engineering Group, LLC Page 13 HydroCAD®7.00 s/n 001433 © 1986-2003 Applied Microcomputer Systems 8/9/2021 Pond 1 P: 1,000 Gallon Drywell w/ 30" stone surrounding Sandy Loam - Rawl's Rate 1.02 in/hr) Inflow Area = 0.017 ac, Inflow Depth = 7.47" for 100 Year Storm event Inflow = 0.13 cfs @ 12.09 hrs, Volume= 0.010 of Outflow = 0.00 cfs @ 8.60 hrs, Volume= 0.006 af, Atten= 97%, Lag= 0.0 min Discarded = 0.00 cfs @ 8.60 hrs, Volume= 0.006 of Routing by Stor-Ind method, Time Span= 5.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 256.52' @ 15.83 hrs Surf.Area= 165 sf Storage= 259 cf Plug-Flow detention time= 261.7 min calculated for 0.006 of(55% of inflow) Center-of-Mass det. time= 149.3 min ( 909.2 - 759.9 ) # Invert Avail.Storage Storage Description 1 253.80' 164 cf 10.67'W x 15.50'L x 3.50'H Prismatoid 579 cf Overall - 168 cf Embedded = 410 cf x 40.0% Voids 2 254.30' 168 cf 5.67'W x 10.50'L x 2.83'H Prismatoid Inside #1 333 cf Total Available Storage # Routing Invert Outlet Devices 1 Discarded 0.00' 0.001400 fpm Exfiltration over entire Surface area Discarded OutFlow Max=0.00 cfs @ 8.60 hrs HW=253.84' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.00 cfs) Pond 1 P: 1,000 Gallon Drywell w/ 30" stone surrounding Hydrograph Inflow 0.14 0.13 cfs IM Discarded 0.13 I of I ow Area=O.0 17 ac 0.12 Peak Elev=256.52' 0.11 0.1 Storage=259 cf 0.09 0.08 U 0.07 0 0.06 0.05 0.04 0.03 0.02 0.01 1 0.00 cfs 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours)