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BACKWATR-CD.XLS I BACKWATER CALCULATION SHEET PROJ: JAMES MONROE ELEMENTARY Calculated by: M.A.D. I WO: 26-09-040 Checked by:ARM DATE:3/19f2010 Date Checked:3/25/10 . FILE:Q109t040James Monroe Ele n Modernization\Drainage\[StonnTcch Cumulative Storages Spreadsheet.xls]Cumulative Volumes Imperial (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) Pipe Barrel Barrel Barrel Friction Entrance Entrance Exit Outlet Inlet Approach Bend Junction HW I Pipe Segment Q Length Diameter "n" Outlet Elev Inlet Elev Area Velocity Vel Head TW Elev Loss HGL Elev head loss head loss contr.Elev contr. Elev vel.head head loss head loss elev. CB to CB (cfs) (ft} (ink Value (ft) (ft) (sqft) {fps) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) CB 5 CB 6 13.47 19 24 0.012 443.35 443.45 3.142 4.288 0.285 447.270 0.057 447.327 0.057 0.285 447.670 0.235 0.000 0.000 447.435 ICB6 CB 8 -__12.22 90 24 0.012 443.45 443.75 3.142 3.890 0.235 447.435 0.222 447.657 0.047 0.235 447.939 0.403 0.000 0.000 447.536 CB 8 CB 11 9 43 18 0.012 444.25 444.75 1.767 5.093 0.403 447.536 0.267 447.802 0.081 0.403 448.286 0.388 0.000 0.000 447.898 CB 11 CB 13 8.83 79 IS 0.012 444.75 445.1 1.767 4.997 0.388 447.898 0.472 448.370 0.078 0.388 448.835 0.226 0.000 0.000 448.609 CB 13 CB 14 6.74 148 18 0.012 445.1 446.2 1.767 3.814 0.226 448.609 0.515 449.124 0.045 0.226 449.395 0.127 0.000 0.000 449.267 CB 14 CB 16 5_06 130 _ 18 0.012 446.2 446.6 1.767 2.863 0.127 449.267 0.255 449.522 0.025 -0.127 449.675 0.109 0.000 0.000 449.566 ... CB 16 CB 17 4.69 76 18 0.012 446.6 447.7 1.767 2.654 0.109 449.566 0.128 449.694 O.Q22 0.1 Q9 449.825 0.082 0.000 0.000 449.743 CB 17 CB 18 4.06 76 18 0.012 446.2 446.8 1.767 2.297 0.082 449.743 0.096 449.839 0.016 0.082 449.937 0.106 0.000 0.000 449.831 CB 18 CB 19 2.05 74 12 0.012 445.8 446.25 0.785 2.610 0.106 449.831 0.207 450.038 0.021 0.106 450.165 - -- 0.103 0.000 0.000 450.062 ICB 19 CB 20 2.02 143 12 0.012 445.25 446 0.785 2.572 0.103 450.062 0.388 450.450 0.021 0.103 450.573 0.000 0.000 0.000 450.573 CB 18 . ' CB 21 1.9 53 12 0.012 447.3 447.9 0.785 2.419 0.091 450.062 0.127 450.190 0.018 0.091 450.299 0.079 0.000_ 0.000 450.220 CB 21 _ CB 22 1.77 71 12 0.012 447.9 448.4 0.785 2.254 _ 0.079 450.220 0.148 450.368 0.016 0.079 450.462 0.014 0.000 0.000 450.448 I CB-2-2- CB 23 0.74 91 12 0.012 448.4 449.5 0.785 0.942 0.014 450.448 0.033 450.482 0.003 0.014 450.498 0.002 0.000 0.000 450.496 CB 23 CB 24 0.27 91 12 0.012 449.5 450_3 0.785 0.344 0.002 450.496 0.004 450.501 0.000 0.002 450.503 0.000 0.000 0.000 450.503 • I CB 13- CB 27 1.8 6 126 12 0.012 447 448.3 0.785 _ 2.368 0.087 449.267 0.290 449.557 0.017 0.087 449.662 0.067 0.000 0.000 449.595 CB 27 CB 28 1,63 69 12 0.012 448.3 448.8 0.785 2.075 0.067 449.595 0.122 449.717 0.013 0.067 449.797 0.037 - 0.000 0.000 449.759 CB 28 CB 29 1.22 98 12 0.012 448.8 449.5 0.785 1.553 0.037 449.759 0.097 449.856 0.007 0.037 449.901 _ _ 0.001 _ 0.000 0.000 449.900 CB 29 CB 30 0.23 59 12 0.012 449.5 450.5 0.785 0.293 0.001 449.90.0 0.002 449.902 -0.000- 0.001 449.904 0.001 0.000 0.000 449.903 ICB 30 "-CB 31 0.21 37 12 0.012 450.5 458.2 0.785 0.267 0.001 449.903 0.001 449.904 0.000 0.001 449.905 0.000 0.000 0.000 449.905 • I SEE PAGE 4.3.4-21 OF THE KING COUNTY SURFACE WATER DESIGN MANUAL FOR THE CORRESPONDING EQUATIONS AND A DETAILED EXPLAINAT1ON ON HOW TO USE THIS SPREADSHEET. I BASED ON 100-YR STORM EVENT I • I . • Page 1 I`: I