20220171 - 14 Wyandra St SWMP

DRAINS Modelling Results
Project number:    20220171                                                                 Calculations:          B. Parry
Street Address:    14 Wyandra Street
Locality:          Noosa Heads, NSC                                                         Date:                  5/08/2022




Pre / Post Comparison (To Wyandra St)


A.E.P                 Qy Pre (m3/s)             Qy Post (m3/s) Qchange (m3/s)               Qchange (%)
          63.2% AEP                     0.022             0.025                    0.003                    14%
           50% AEP                      0.025             0.027                    0.002                     8%
           20% AEP                      0.037             0.040                    0.003                     8%
           10% AEP                      0.047             0.049                    0.002                     4%
             5% AEP                     0.056             0.056                    0.000                     0%
             2% AEP                     0.064             0.064                    0.000                     0%
             1% AEP                     0.070             0.071                    0.001                     1%




Pre / Post w/ OSD Comparison (To Wyandra St)                                                                                   Tank Node Assumptions
A.E.P               Qy Pre (m3/s)          Qy Post (m3/s)         Qchange (m3/s)            Qchange (%)                        https://kingspanwatertanks.com.au/product/3000-litre-slimline-tank/
          63.2% AEP                     0.022             0.022                     0.000                     0%               2x3kL slimline tanks
           50% AEP                      0.025             0.025                     0.000                     0%               Total Area                         3.5 m²
           20% AEP                      0.037             0.033                    -0.004                   -11%               Low flow orifice                    60 mm
           10% AEP                      0.047             0.041                    -0.006                   -13%                                                   42 mm/tank
             5% AEP                     0.056             0.046                    -0.010                   -18%               Overflow                          100 mm
             2% AEP                     0.064             0.060                    -0.004                    -6%               Tank Height                       1.86 m
             1% AEP                     0.070             0.070                     0.000                     0%               Overlow height                    1.71 m