10901 27TH AVE SE 2025-07-29 - Laserfiche WebLink

MIN =I. . 11111 MIN NMI I= OM NM NM Min iiiii ..-NM • PROJ: • JAMES MONROE ELEMENTARY PIPE SIZING . WO: 26-09-040 (Runoff by Rational Method) Calculated by: M.AD. DATE: 3/19/2010 (Pipe Capacity by Manning's Eqn.) Checked by:AM FILE: 0:1091040_James Monroe Elena Modernization\DrainagelfStormlech Cumulative Storages Spreadsheet.xls]Ctunulative Volumes Imperial Date Checked:3/25/10 Storm Table#: 30 Storm: SNOHOMISH 25 YEAR • Inc. Time of Rain Pipe % Veloc Flow Area Runoff Sum Cone Iniens Runoff n Diam Slope Length Capac Capac Full Time Remarks From To (ac) Coef. A*C A*C (min) (in/hr) (cfs) Value (inch) (%) (feet) (cfs) Used (ft/sec), (min) i 8 S0.0� 1.40! 4� 7.11 0.12 CO CB 24 0.02i 0.90 0.021 0.0215.00 3.10 0.06 0.0121 6 5.28 ....-..._ __-- ---CB 24 CB 23 0.06 0.87 0.05 0.071 5.12 3.071 0.22. 0.0121 12 0.88 91.0i 3.621 . 61 4.611 0.33 CB 23 CB 22 0.15 0.85 0,13 0.20 5.45 2,99! •0.59 0.012i 12 1.211 91.0: 4.25• 141 5.4.11. 0.28; CB 22 ,CB 21 0.05 . 0.50! 0.031 0,48 5.73 2.92! 1.41 0.012 12, 0.631 71.0I 3.06_1 46 3.90 1F. 0.301 r.. 1.13! 53.0 4.10 37 5.22' 0.171 CB2l ICB 1$ I O.OSi 0.90` 0.05 0.53 6.03 2.84 1.50 0.012 12' CB 18 ICB 17 0.06 0.901 0.05 1.14 6.20 2.82 3.21 0.012 12 0.79 76.0 3.43 94. 4.37 0.29 1 CB17 CB 16 0.22 0.901 0.20 1.34 6.49 2.761 3.70 0.012 18 0.621 76.0 8.96 41' 5.07 0.25 CB 16 ICB 14 0.14 0.90 0.13 1.46 6.74 2.721 3.98 0.012 [8 0.601 67.0 8.81 451 4.99 0.22 CB 14 ICB 13 0.17 0.90i 0.15 1.98 6.96 2.68i 5.30 0.012 18 0.52; 212.0 8,21 651 4.64 0.76! CB 13 IcB 11 0.23 • 0.901 0.211 2.71 7.72 2.55 6.91 0.012 18 0.50 70,0j _ 8,05 861- 4.55 0.261 CB 11 CB 8 0.00 0.90' 0.001 2.81 7.98 2.501 7.03 0.012118 0.56! 90.01. 8.52 831 4.82 0.31• CB 8 CB 6 0.00 0.90 0.000! 3.87 8.29 2.47 L 9.57 0.0121 24 0.56! 52.01 18.341 521 5.841 0.15. • CB 6 CB 5 0.00, 0.90 0.00 4.30 8.44 2.46' 10.56 0.012: 241 0.50 20.0- 17.331 611. 5.52 0.06 • CO CB 31 0.05 0.90 0.05; 0.05':5.00 3.10 0.14 0.012: 6 1.04! 96.0 0.62! 23! 3.16; 0.51 CB 31 CB 30 0.05! 0.25 0.01• 0.061 5.51 2.97 0.17 0.012 12 20.811 37.0 1 7.61, 1! 22.42 0.03 CB 30 CB 29 1 0.02 0.25 0.011 0.06 5.53 2.97 0.19- 0.0121 121 1.69 59.0; 5.02• 4; 6.39 0.15• • CB 29 CB 28 , 0.10` 0.80 0.08' 0.33 5.69, 2.93 0.97 0.012 12 0.71 98.0 3.25. 301 4.14. 0.39 CB 28 CB 27 ; 0,14 0.87 0.12 0.451 6.081- 2.84 1.29 ' 0.012 121 0.72 69.0' 3.28 391 4.17; 0.281 CB 27 CB 13 0.08! 0.90 0.07 0,531 6.361 2.79 1.471 0.012 12, 1.03 126.01 3.921 37. 4.99. 0.421 CB 20 !CB 19 1.76 0.30 0.53 0.53 5.00 3.10 1.64: 0.012 121 0.52 143.0 2.78; 591 3.541 0.67 CB 19 ICB 18 0.12 0.25 0.03 0.56 5.67; 2.93 1.64i 0.012 121 0.61 74.0 3.011 541 3_841 0.32 - - CB 26 CB 25 0.04 0.90 0.012 12 0.93 i 43.0 51 3 4.14 0.17 CB 25 CB 22 0.25 0 90! 0.23 0.26� 5.005.17 3.06; 0.80 3.10 0.11 0.012 12' 0.71 42.0 3.2„ -- ..,-_.!_..._..__..___ 3.72 21...._.,..4.74E 0-151...--...._. ! 1 _.._ -__......; - -.;_..... -1 , -..-..... YD I CB 6 0.341 0.25 0.09: 0.09 5.00 3.10 0.26 0.012 8 0.691 102.0; 1.09; 24' 3.121 0.55 • Page-1 of 2