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Client:City of Mounds View Proj. No.435-07-129 Storm Sewer Analysis Worksheet - Rational Method Project:Arden Ave Drainage Subdistrict Analysis Prepared By: BPS Design Basis:2 year event Date:12/17/2008 Time Full Time Imperv.of Q - RUNOFF (cfs)Pipe Pipe Pipe Pipe Flow Pipe In Ground Invert Pipe Ground Invert Pipe From To Area Area %Total Conc.I Slope Dia. Material Capacity Velocity Length Pipe Elev. Elev. Cover Elev. Elev. Cover Point Point (ac.)(ac) Imperv. C CxA CxA (min.) (In/Hr) Direct Pond Total %(in.)(cfs)(fps)(feet) (min.) (feet) (feet) (feet) (feet) (feet) (feet) COMMENTS Existing Conditions - Ardan Avenue Drainage Subdistrict Analysis 1 2 1.60 0.48 30% 0.34 0.54 0.54 18.3 3.09 1.7 1.7 1.15 12 3.8 4.9 27 0.1 911.30 907.90 2.2 911.29 907.59 2.5 2 5 0.68 0.24 35% 0.38 0.26 0.80 18.4 3.09 2.5 2.5 0.20 12 1.6 2.0 294 2.4 911.29 907.59 2.5 910.81 907.01 2.6 3 4 2.04 0.75 37% 0.40 0.81 0.81 18.2 3.09 2.5 2.5 1.13 12 3.8 4.8 23 0.1 911.02 907.62 2.2 910.86 907.36 2.3 4 5 1.83 0.47 26% 0.30 0.55 1.36 18.3 3.09 4.2 4.2 0.81 15 5.8 4.7 43 0.2 910.86 907.36 2.1 910.81 907.01 2.3 5 redoak 2.02 0.64 32% 0.35 0.72 2.88 20.8 2.95 8.5 8.5 0.39 15 4.0 3.3 533 2.7 910.81 907.01 2.3 914.85 904.95 8.4 redoak 15 0.00 2.88 23.5 2.75 7.9 7.9 0.20 15 2.9 2.3 343 2.5 914.85 904.95 8.4 913.90 904.28 8.2 15 16 0.50 0.22 45% 0.46 0.23 3.11 23.5 2.75 8.5 8.5 0.19 15 2.9 2.3 154 1.1 913.90 904.28 8.2 913.43 903.98 8.0 8 9 1.12 0.38 34% 0.37 0.41 0.41 17.7 3.16 1.3 1.3 1.68 12 4.6 5.9 28 0.1 912.42 907.32 3.9 912.45 906.85 4.4 9 16 5.70 1.07 19% 0.24 1.37 1.79 44.0 1.90 3.4 3.4 1.03 18 10.7 6.0 65 0.2 912.45 906.85 3.9 913.43 906.18 5.6 10 11 7.12 1.35 19% 0.24 1.73 1.73 40.9 1.98 3.4 3.4 0.48 12 2.5 3.1 27 0.1 909.90 907.50 1.2 909.72 907.37 1.2 11 13A 1.89 0.63 33% 0.37 0.69 2.42 41.0 1.96 4.7 4.7 0.16 15 2.6 2.1 173 1.4 909.72 907.37 0.9 911.29 907.09 2.7 12 13 4.82 0.98 20% 0.25 1.22 1.22 38.2 2.04 2.5 2.5 0.78 12 3.1 4.0 27 0.1 911.05 908.07 1.8 911.06 907.86 2.0 13 13A 0.70 0.26 36% 0.39 0.28 1.50 38.3 2.04 3.1 3.1 0.82 12 3.2 4.1 88 0.4 911.06 907.81 2.1 911.29 907.09 3.0 13A 16 0.08 0.00 3.92 42.4 1.93 7.6 7.6 0.16 15 2.6 2.1 558 4.4 911.29 907.09 2.7 913.43 906.18 5.8 16 33A 0.33 0.11 32% 0.36 0.12 8.94 44.2 1.87 16.7 16.7 0.23 18 5.0 2.9 600 3.5 913.43 903.98 7.7 910.60 902.60 6.3 33A 33B 0.00 8.94 47.7 1.79 16.0 2.0 18.0 0.23 18 5.0 2.8 603 3.5 910.60 902.60 6.3 907.07 901.22 4.2 100-yr outflow from basin (Estimated) 21 22 9.10 2.73 30% 0.34 3.08 3.08 42.8 1.93 5.9 5.9 0.20 18 4.7 2.7 498.4 3.1 908.65 905.28 1.7 907.60 904.28 1.6 22 24 10.23 4.31 42% 0.44 4.52 7.60 46.0 1.84 14.0 14.0 0.20 18 4.7 2.7 289 1.8 907.60 904.28 1.6 907.40 903.70 2.0 23 24 0.0 2.7 2.7 0.60 12 2.8 3.5 20 0.1 FES 905.40 NA 907.40 905.28 0.9 100-yr outflow from basin 24 25 2.94 1.23 42% 0.44 1.30 8.90 47.8 1.79 15.9 2.7 18.6 0.19 18 4.5 2.6 16 0.1 907.40 903.70 2.0 907.00 903.67 1.6 25 25.1 5.85 0.32 5%0.13 0.74 9.64 47.9 1.79 17.3 2.7 20.0 0.19 18 4.6 2.6 448 2.9 907.00 903.67 1.6 911.80 902.82 7.3 25.1 26 0.00 9.64 47.9 1.79 17.3 2.7 20.0 0.10 24 7.0 2.2 134 1.0 911.80 902.37 7.2 910.30 902.24 5.8 26 27 2.23 0.86 39% 0.41 0.92 10.55 48.9 1.76 18.6 2.7 21.3 0.10 24 7.2 2.3 325 2.4 910.30 902.24 5.8 904.66 901.91 0.5 27 31 3.05 0.43 14% 0.20 0.62 11.17 51.2 1.68 18.8 2.7 21.5 0.10 24 7.2 2.3 209 1.5 904.66 901.91 0.5 908.00 901.70 4.0 28 29 2.59 1.03 40% 0.42 1.10 1.10 20.2 2.95 3.2 3.2 0.33 12 2.0 2.6 327 2.1 909.00 904.97 2.8 908.23 903.90 3.1 29 30A 5.98 2.99 50% 0.51 3.05 4.15 35.5 2.12 8.8 8.8 0.36 18 6.3 3.6 227 1.1 908.23 903.90 2.6 909.44 903.09 4.7 30 30A 2.73 1.12 41% 0.43 1.19 1.19 21.5 2.89 3.4 3.4 0.83 15 5.9 4.8 218 0.8 907.51 904.89 1.2 909.44 903.09 4.9 30A 31 0.00 5.33 36.5 2.10 11.2 11.2 0.55 18 7.8 4.4 190 0.7 909.44 903.09 4.7 908.59 902.04 4.9 31 32 3.54 1.55 44% 0.46 1.62 18.12 52.7 1.65 29.9 2.7 32.6 0.10 24 7.1 2.3 245 1.8 908.59 901.70 4.6 905.00 901.46 1.3 32 33B 0.00 18.12 54.6 1.59 28.8 28.8 0.10 24 7.2 2.3 235 1.7 905.00 901.46 1.3 907.50 901.22 4.0 33 33B 6.45 2.07 32% 0.36 2.29 2.29 55.1 1.57 3.6 3.6 0.10 15 2.1 1.7 335 3.3 906.80 901.84 3.5 907.50 901.50 4.6 33B 34 0.00 29.34 58.4 1.48 43.4 4.7 48.1 0.11 24 7.6 2.4 266 1.8 907.50 901.22 4.0 902.18 900.92 -1.0 34 38 8.51 0.86 10% 0.17 1.42 30.76 60.2 1.43 44.0 4.7 48.7 0.10 24 7.2 2.3 270 2.0 902.18 900.92 -1.0 908.00 900.65 5.1 35 36A 5.33 3.42 64% 0.63 3.36 3.36 20.0 2.95 9.9 9.9 0.40 12 2.3 2.9 120 0.7 908.10 902.82 4.1 908.51 902.34 5.0 36 36A 4.71 1.31 28% 0.32 1.50 1.50 30.0 2.26 3.4 3.4 0.30 12 2.0 2.5 60 0.4 907.69 902.57 3.9 908.51 902.39 4.9 36A 38 0.00 4.87 30.4 2.26 11.0 11.0 0.14 18 4.0 2.2 189 1.4 908.51 902.27 4.5 908.00 902.00 4.3 38 38A 1.86 0.43 23% 0.28 0.51 36.14 62.2 1.43 51.7 4.7 56.4 0.10 24 7.0 2.2 199 1.5 908.00 900.65 5.1 908.20 900.46 5.5 100-year ponded discharge UPPER MH LOWER MH 100-year ponded discharge Page 1 of 2