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 3 - Downstream of Pipe
CROSS SECTION DETAILS                                 EXISTING 100 YEAR ARI
  POINT         CH          Z                 n       wA       wP      n x wA



     1           0.000      102.250
     2           7.170      102.000      0.045
     3           14.830     101.750      0.045
     4           15.620     101.500      0.045
     5           16.330     101.250      0.045        0.02       0.36         0.00
     6           17.060     101.000      0.045        0.18       0.77         0.01
     7           18.670     100.800      0.045        0.76       1.62         0.03
     8           20.290     101.000      0.045        0.76       1.63         0.03
     9           21.140     101.250      0.045        0.21       0.89         0.01
     10          22.810     101.500      0.045        0.05       0.81         0.00
     11          25.000     101.750      0.045
     12          28.640     102.000      0.045
     13          33.980     102.250      0.045
     14


                                                       wA         wP         n x wA
                                       TOTAL        1.973744    6.08414    0.0888185
                   S
                 0.014                                  R          n           Q
                                                    0.324408     0.045        2.45
                                        Q100 Flow                2.46

                                              WSL               101.37

                Calculated by Manning's Equation                 2.45


   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