B07056.W-01A Complete - Stormwater [As Published] · 132007.2398

                                                                                                        Appendix C
 MANNING'S CALCULATION
Filename:     H:\B07\050-099\B07056 - RSL Care Cooroy.WW\Misc\[Manning's Calcs MS 071017.xls]Sthn
Date:         22/10/2007
By:           MS

Manning's calculation as per Equation 4.2.3 of Australian Rainfall and Runoff (1987)

Southern Dam
South XS 4 - Downstream lot
CROSS SECTION DETAILS                                 EXISTING 100 YEAR ARI
  POINT         CH          Z                 n       wA       wP      n x wA



     1           0.000      102.250
     2           5.690      102.000      0.045
     3           8.960      101.750      0.045
     4           12.050     101.500      0.045
     5           13.690     101.250      0.045        0.03       0.60        0.00
     6           15.310     101.000      0.045        0.35       1.64        0.02
     7           16.920     100.800      0.045        0.71       1.62        0.03
     8           17.840     101.000      0.045        0.40       0.94        0.02
     9           18.760     101.250      0.045        0.20       0.95        0.01
     10          19.940     101.500      0.045        0.02       0.43        0.00
     11          21.130     101.750      0.045
     12          22.940     102.000      0.045
     13          26.930     102.250      0.045
     14


                                                       wA       wP      n x wA
                                       TOTAL        1.704984 6.187852 0.0767243
                   S
                 0.023                                  R          n          Q
                                                    0.275537     0.045       2.43
                                        Q100 Flow                2.46

                                              WSL               101.34

                Calculated by Manning's Equation                 2.43


   102.500



   102.000



   101.500



   101.000



   100.500
                                                                          Existing Surface
                                                                          EXISTING 100 Y ARI WSL

    100.000
   -2.000           3.000             8.000            13.000            18.000              23.000   28.000




H:\B07\050-099\B07056 - RSL Care Cooroy.WW\Misc\Manning's Calcs MS 071017