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HomeMy WebLinkAboutTract 7381 Drainage Study Part of PM12251CITY OF BAKERSFIELD RATIONAL METHOD (In accordance with City of Bakersfield Standards) TABLE OF RUNOFF COEFFICIENTS R-1, 6000 SF 0.42 JOB TITLE:Tract 7381 R-1, 6750 SF 0.4 DATE:Dec-21 R-1, 7500 SF 0.38 R-1, 10000 SF 0.34 Rational Values:R-2, 15000 SF 0.557 Event: 10 YEAR Values: 5, 10, 50 R-3, R-4, M-H 0.8 M.A.P. 6 in./yr. Values: 6, 10, 15, 20, 25, 30 Commercial 0.9 Water Well Site 0.1 Curve Values Parks 0.15 a: 2.38 I=a+bTc (Tc<20min.) Grasslands, Type A Soil 0.15 b: -0.058 Grasslands, Type B Soil 0.25 P60: 0.550 I=K1*(6.02*Tc)^(0.17*LN(p60/K1) Grasslands, Type C Soil 0.35 K1: 40.00 (Tc>=20min.) Grasslands, Type D Soil 0.45 Pavement with Landscaping 0.9 Backyards 0.05 Lawn-landscape 2% slope 0.10 0.17 Lawn-landscape 2-7% slope 0.15 0.22 Lawn-landscape 7% slope 0.20 0.35 SUBAREA C I A rslt Tc L dH Sg Q Street V Trial Tc Roof to Tm D Curb NAME Runoff Intensity Total Time Length Elev. Gutter Flow Type Vel. MIN. Gutter Travel Pipe Cap Coef. IN/HR Area Conc. Feet Diff. Slope CFS FPS Time Time Dia.In AC. MIN. Feet Ft/Ft MIN. MIN. In. AREA 1 0.59 1.29 2.31 18.68 374 0.9 0.24% 1.77 60 1.69 18.68 15 3.68 3.98 PIPE I 25 1.00 0.42 18 19.10 PIPE H 0.59 1.27 2.31 182 1.74 0.99 19.10 3.08 18 22.18 AREA 2 0.55 1.36 1.41 17.59 278 1.0 0.35% 1.05 60 1.79 17.59 15 2.59 3.15 PIPE G 26 0.60 0.74 18 18.33 PIPE F 0.58 1.13 3.72 91 2.43 1.37 22.18 1.11 18 23.29 PIPE E 0.58 1.09 3.72 328 2.34 1.32 23.29 4.12 18 27.41 AREA 3 0.55 1.19 2.43 20.55 603 1.8 0.30% 1.60 60 1.81 20.55 15 5.55 3.70 PIPE O 25 0.90 0.46 18 21.01 PIPE D 0.57 0.97 6.15 30 3.37 1.91 27.41 0.27 18 27.67 AREA 4 0.61 1.27 4.34 19.19 528 1.8 0.33% 3.35 60 2.10 19.19 15 4.19 4.41 PIPE M 9 1.90 0.08 18 19.27 Tc CALCULATIONS Tract 7381 Hydrology_10_yr.xls McIntosh Associates 2001 Wheelan Ct Bakersfield, CA 93309 10 yr Calc SUBAREA C I A rslt Tc L dH Sg Q Street V Trial Tc Roof to Tm D Curb NAME Runoff Intensity Total Time Length Elev. Gutter Flow Type Vel. MIN. Gutter Travel Pipe Cap Coef. IN/HR Area Conc. Feet Diff. Slope CFS FPS Time Time Dia.In AC. MIN. Feet Ft/Ft MIN. MIN. In. Tract 7381 AREA 5 0.59 1.80 0.92 10.00 720 3.0 0.41% 0.98 60 1.92 10.00 0 6.26 3.06 PIPE L 31 0.56 0.93 18 10.93 PIPE K 0.61 1.26 5.26 95 4.02 2.28 19.27 0.69 18 19.96 AREA 6 0.55 1.30 2.53 18.66 491 3.2 0.65% 1.80 60 2.24 18.66 15 3.66 3.54 PIPE N 9 1.02 0.15 18 18.81 PIPE J 0.59 1.22 7.79 242 5.59 3.17 19.96 1.27 18 21.24 PIPE C 0.58 0.96 13.94 48 7.76 2.47 27.67 0.32 24 28.00 PIPE 3 *0.91 1.30 16.39 53 19.39 3.95 18.62 0.22 30 18.84 PIPE B 0.76 0.95 30.33 262 21.93 3.10 28.00 1.40 36 29.40 AREA 7 0.55 1.43 1.80 16.44 300 5.3 1.77% 1.41 60 3.48 16.44 15 1.44 2.86 PIPE P 71 0.80 1.47 18 17.91 PIPE A 0.75 0.92 32.13 149 22.08 3.12 29.40 0.80 36 30.20 * from the Approved Master Drainage Study for Parcel Map no. 12251 (See Reference) Hydrology_10_yr.xls McIntosh Associates 2001 Wheelan Ct Bakersfield, CA 93309 10 yr Calc TRACT 7381 HYDRAULIC CALCULATIONS (OUTPUT) Pipe Pipe Pipe Flow Avg. Capacity Invert HGL Velocity Velocity EGL Sf Invert No. Length Size Rate Velocity Flowing Down Down Down Head Down Down Down Up (ft)(in)(cfs)(ft/s)Full (cfs)(ft)(ft)(ft/s)(ft)(ft)(%)(ft) PIPE A 149.45 36 22.08 3.13 21.13 340.72 343.72 3.13 0.15 343.87 0.110 340.87 PIPE B 261.53 36 21.93 3.11 21.03 340.87 344.02 3.11 0.15 344.17 0.109 341.13 PIPE C 47.56 24 7.76 2.91 8.04 343.61 345.19 2.91 0.13 345.32 0.126 343.67 PIPE D 30.44 18 3.37 1.91 5.38 343.67 345.38 1.91 0.06 345.44 0.103 343.75 PIPE E 327.66 18 2.34 1.55 5.35 343.75 345.47 1.32 0.03 345.50 0.050 344.60 PIPE F 91.15 18 2.43 1.87 4.67 344.60 345.70 1.75 0.05 345.74 0.068 344.78 PIPE G 26.34 18 1.05 3.68 10.03 346.36 346.69 3.68 0.21 346.90 0.000 346.60 PIPE H 181.86 18 1.74 1.62 4.74 344.78 345.82 1.33 0.03 345.85 0.040 345.15 PIPE I 25.47 18 1.77 1.83 4.65 345.15 345.97 1.78 0.05 346.02 0.083 345.20 PIPE J 242.06 18 5.59 3.17 3.63 343.67 345.38 3.17 0.16 345.54 0.285 343.96 PIPE K 94.90 18 4.02 2.28 3.58 343.96 346.23 2.28 0.08 346.31 0.147 344.07 PIPE L 31.00 18 0.98 0.57 4.62 344.07 346.45 0.57 0.00 346.45 0.009 344.13 PIPE M 8.98 18 3.35 1.90 4.96 344.07 346.45 1.90 0.06 346.50 0.102 344.09 PIPE N 9.00 18 1.80 0.85 7.00 343.96 346.23 0.85 0.01 346.24 0.020 344.00 PIPE O 25.00 18 1.60 2.12 31.64 343.75 345.47 0.91 0.01 345.48 0.023 346.02 PIPE P 70.58 18 1.41 2.00 28.59 341.67 344.02 0.79 0.01 344.03 0.018 346.90 PIPE 3 *52.59 30 19.39 3.95 12.64 341.13 344.46 3.95 0.24 344.70 0.224 341.18 Pipe HGL Grnd/Rim Cover Velocity Velocity EGL Sf Sf Energy J-Loss Minor No. Up Elev. Up Up Up Head Up Up Up Avg. Loss Coeff Loss (ft)(ft)(ft)(ft/s)(ft)(ft)(%)(%)(ft)(ft) PIPE A 343.87 351.50 7.63 3.13 0.15 344.02 0.109 0.109 0.163 1 0.15 PIPE B 344.31 351.10 6.97 3.11 0.15 344.46 0.109 0.109 0.285 1 0.15 PIPE C 345.25 350.72 5.05 2.91 0.13 345.38 0.126 0.126 0.060 1 0.13 PIPE D 345.41 351.00 5.75 1.91 0.06 345.47 0.103 0.103 0.031 1 0.06 PIPE E 345.65 351.50 5.40 1.77 0.05 345.70 0.071 0.06 0.198 1 0.05 PIPE F 345.76 350.90 4.62 1.99 0.06 345.82 0.093 0.081 0.073 1 0.06 PIPE G 346.93 351.16 3.06 3.68 0.21 347.14 0 0 0 1.00 z n/a PIPE H 345.92 350.00 3.35 1.91 0.06 345.97 0.101 0.071 0.129 0.99 0.06 PIPE I 345.99 349.70 3.00 1.87 0.05 346.05 0.095 0.089 0.023 1 0.05 PIPE J 346.07 348.75 3.29 3.17 0.16 346.23 0.284 0.284 0.689 1 0.16 PIPE K 346.37 348.75 3.18 2.27 0.08 346.45 0.147 0.147 0.139 1 0.08 PIPE L 346.45 348.50 2.87 0.57 0.00 346.45 0.009 0.009 0.003 1 0 PIPE M 346.46 348.50 2.91 1.90 0.06 346.51 0.102 0.102 0.009 1 0.06 PIPE N 346.23 348.50 3.00 0.85 0.01 346.24 0.02 0.02 0.002 1 0.01 PIPE O 346.49 j 350.52 3.00 3.33 0.17 346.67 0.493 0.258 0.064 1.00 z n/a PIPE P 347.34 j 351.45 3.05 3.21 0.16 347.50 0.493 0.255 0.180 1.00 z n/a PIPE 3 * 344.56 348.50 4.82 3.95 0.24 344.82 0.224 0.224 0.118 1 0.24 NOTES: j-Line contains hyd. jump; z-Zero Junction Loss PIPE APIPE BPIPE CPIPE JPIPE KSUMPMANHOLEMANHOLEMANHOLEMANHOLEUPSTREAMMANHOLE PIPE DPIPE EMANHOLEUPSTREAMMANHOLEDOWNSTREAMMANHOLE PIPE FPIPE HUPSTREAMMANHOLEDOWNSTREAMMANHOLEMANHOLE PIPE GDOWNSTREAMMANHOLECB-2 PIPE IDOWNSTREAMMANHOLECB-1 PIPE ODOWNSTREAMMANHOLECB-3 PIPE MDOWNSTREAMMANHOLECB-4 PIPE LDOWNSTREAMMANHOLECB-5 PIPE NDOWNSTREAMMANHOLECB-6 PIPE PDOWNSTREAMMANHOLECB-7 Inlet Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Wednesday, Dec 8 2021 Drainage Area 1- Catch Basin 1> Curb Inlet Location = Sag Curb Length (ft) = 3.50 Throat Height (in) = 4.50 Grate Area (sqft) = -0- Grate Width (ft) = -0- Grate Length (ft) = -0- Gutter Slope, Sw (ft/ft) = 0.083 Slope, Sx (ft/ft) = 0.023 Local Depr (in) = 2.00 Gutter Width (ft) = 2.00 Gutter Slope (%) = -0- Gutter n-value = -0- Calculations Compute by: Known Q Q (cfs) = 1.77 Highlighted Q Total (cfs) = 1.77 Q Capt (cfs) = 1.77 Q Bypass (cfs) = -0- Depth at Inlet (in) = 6.17 Efficiency (%) = 100 Gutter Spread (ft) = 9.88 Gutter Vel (ft/s) = -0- Bypass Spread (ft) = -0- Bypass Depth (in) = -0- Inlet Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Wednesday, Dec 8 2021 Drainage Area 2 - Catch Basin 2> Curb Inlet Location = Sag Curb Length (ft) = 3.50 Throat Height (in) = 4.50 Grate Area (sqft) = -0- Grate Width (ft) = -0- Grate Length (ft) = -0- Gutter Slope, Sw (ft/ft) = 0.083 Slope, Sx (ft/ft) = 0.020 Local Depr (in) = 2.00 Gutter Width (ft) = 2.00 Gutter Slope (%) = -0- Gutter n-value = -0- Calculations Compute by: Known Q Q (cfs) = 1.05 Highlighted Q Total (cfs) = 1.05 Q Capt (cfs) = 1.05 Q Bypass (cfs) = -0- Depth at Inlet (in) = 5.44 Efficiency (%) = 100 Gutter Spread (ft) = 8.02 Gutter Vel (ft/s) = -0- Bypass Spread (ft) = -0- Bypass Depth (in) = -0- Inlet Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Wednesday, Dec 8 2021 Drainage Area 3 - Catch Basin 3> Curb Inlet Location = Sag Curb Length (ft) = 3.50 Throat Height (in) = 4.50 Grate Area (sqft) = -0- Grate Width (ft) = -0- Grate Length (ft) = -0- Gutter Slope, Sw (ft/ft) = 0.083 Slope, Sx (ft/ft) = 0.021 Local Depr (in) = 2.00 Gutter Width (ft) = 2.00 Gutter Slope (%) = -0- Gutter n-value = -0- Calculations Compute by: Known Q Q (cfs) = 1.60 Highlighted Q Total (cfs) = 1.60 Q Capt (cfs) = 1.60 Q Bypass (cfs) = -0- Depth at Inlet (in) = 6.04 Efficiency (%) = 100 Gutter Spread (ft) = 10.001 Gutter Vel (ft/s) = -0- Bypass Spread (ft) = -0- Bypass Depth (in) = -0- Inlet Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Wednesday, Dec 8 2021 Drainage Area 4 - Catch Basin 4> Curb Inlet Location = Sag Curb Length (ft) = 3.50 Throat Height (in) = 4.50 Grate Area (sqft) = -0- Grate Width (ft) = -0- Grate Length (ft) = -0- Gutter Slope, Sw (ft/ft) = 0.083 Slope, Sx (ft/ft) = 0.035 Local Depr (in) = 2.00 Gutter Width (ft) = 2.00 Gutter Slope (%) = -0- Gutter n-value = -0- Calculations Compute by: Known Q Q (cfs) = 3.35 Highlighted Q Total (cfs) = 3.35 Q Capt (cfs) = 3.35 Q Bypass (cfs) = -0- Depth at Inlet (in) = 7.32 Efficiency (%) = 100 Gutter Spread (ft) = 9.93 Gutter Vel (ft/s) = -0- Bypass Spread (ft) = -0- Bypass Depth (in) = -0- Inlet Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Wednesday, Dec 8 2021 Drainage Area 5 - Catch Basin 5> Curb Inlet Location = Sag Curb Length (ft) = 3.50 Throat Height (in) = 4.50 Grate Area (sqft) = -0- Grate Width (ft) = -0- Grate Length (ft) = -0- Gutter Slope, Sw (ft/ft) = 0.083 Slope, Sx (ft/ft) = 0.020 Local Depr (in) = 2.00 Gutter Width (ft) = 2.00 Gutter Slope (%) = -0- Gutter n-value = -0- Calculations Compute by: Known Q Q (cfs) = 0.98 Highlighted Q Total (cfs) = 0.98 Q Capt (cfs) = 0.98 Q Bypass (cfs) = -0- Depth at Inlet (in) = 5.35 Efficiency (%) = 100 Gutter Spread (ft) = 7.66 Gutter Vel (ft/s) = -0- Bypass Spread (ft) = -0- Bypass Depth (in) = -0- Inlet Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Wednesday, Dec 8 2021 Drainage Area 6 - Catch Basin 6> uCurb Inlet Location = Sag Curb Length (ft) = 3.50 Throat Height (in) = 4.50 Grate Area (sqft) = -0- Grate Width (ft) = -0- Grate Length (ft) = -0- Gutter Slope, Sw (ft/ft) = 0.083 Slope, Sx (ft/ft) = 0.023 Local Depr (in) = 2.00 Gutter Width (ft) = 2.00 Gutter Slope (%) = -0- Gutter n-value = -0- Calculations Compute by: Known Q Q (cfs) = 1.80 Highlighted Q Total (cfs) = 1.80 Q Capt (cfs) = 1.80 Q Bypass (cfs) = -0- Depth at Inlet (in) = 6.20 Efficiency (%) = 100 Gutter Spread (ft) = 9.99 Gutter Vel (ft/s) = -0- Bypass Spread (ft) = -0- Bypass Depth (in) = -0- Inlet Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Wednesday, Dec 8 2021 Drainage Area 7 - Catch Basin 7> Curb Inlet Location = Sag Curb Length (ft) = 3.50 Throat Height (in) = 4.50 Grate Area (sqft) = -0- Grate Width (ft) = -0- Grate Length (ft) = -0- Gutter Slope, Sw (ft/ft) = 0.083 Slope, Sx (ft/ft) = 0.020 Local Depr (in) = 2.00 Gutter Width (ft) = 2.00 Gutter Slope (%) = -0- Gutter n-value = -0- Calculations Compute by: Known Q Q (cfs) = 1.41 Highlighted Q Total (cfs) = 1.41 Q Capt (cfs) = 1.41 Q Bypass (cfs) = -0- Depth at Inlet (in) = 5.85 Efficiency (%) = 100 Gutter Spread (ft) = 9.76 Gutter Vel (ft/s) = -0- Bypass Spread (ft) = -0- Bypass Depth (in) = -0-