8. APP G. Engineering RFI Response

                                                                  Project:           Eumundi Noosa Road
                                                                  Project No.:       AA007595
                                                                  Designer:          KF
                                                                  Date:              5/11/2014




Rational Method Calculations

Project                        Eumundi Noosa Road

Description                    Catchment 2 (Western Side) Post-Developed Discharge




Time of Concentration                                           5.0                  minutes

Area of Catchment                                        0.24                        Hectares

Fraction Impervious                                             0.9

Council Chart No.
                15

Council Name
                                   #N/A


                   ARI                    C value             Rainfall Intensity     Discharge         (m3/s)        Comments
                                                                  (mm/hr)

        3month                                                                                  0.03            Write anything here
              1 year                       0.71                       128.57                    0.06            that is applicable to
                                                                                                                the analysis
             2 year                        0.76                       163.17                    0.08
             5 year                        0.85                       200.83                    0.11
       10 year                             0.89                       222.29                    0.13
       20 year                             0.93                       252.10                    0.16
       50 year                             1.00                       291.10                    0.19
   100 year                                1.00                       320.76                    0.21

                                                               ARI vs Discharge

                        6.00


                        5.00
   Discharge (cumecs)




                        4.00


                        3.00


                        2.00


                        1.00


                        0.00
                               0          10        20   30            40      50     60         70        80         90       100

                                                                               ARI


All Calculations are based on QUDM methods                                                                              Version 4/05