20220206 48 Elm St SWMP

DRAINS RESULTS - DETENTION CALCS - 10% AEP

DRAINS results prepared from Version 2023.11.8726.15750

PIT / NODE DETAILS                                         Version 8
Name                      Max HGL    Max Pond Max SurfaceMax Pond Min          Overflow          Constraint
                                     HGL      Flow ArrivingVolume    Freeboard (cu.m/s)
                                              (cu.m/s) (cu.m)        (m)
C1                            107.25               0.019
New Inlet Pit                    107               0.019

SUB-CATCHMENT DETAILS
Name                  Max        EIA       Remaining EIA   RIA                         PA        Due to Storm
                      Flow Q     Max Q     Max Q     Tc    Tc                          Tc
                      (cu.m/s) (cu.m/s) (cu.m/s) (cu.m/s) (min)                        (min)     (min)
Pre-development            0.044     0.019     0.025     5                        5            5 10% AEP, 10 min burst, Storm 6
Developed                  0.047     0.041     0.012     5                        5            5 10% AEP, 5 min burst, Storm 1
Carpark / Landscaping      0.018         0     0.018     5                        5            5 10% AEP, 10 min burst, Storm 8
Roofwater                  0.037     0.037         0     5                        5            5 10% AEP, 5 min burst, Storm 1



PIPE DETAILS
Name                      Max Q      Max V     Max U/S Max D/S Due to Storm
                          (cu.m/s) (m/s)       HGL (m) HGL (m)
OSD Outlet                     0.019       1.13 107.484 107.064 10% AEP, 20 min burst, Storm 6

CHANNEL DETAILS
Name                      Max Q        Max V                             Due to Storm
                          (cu.m/s)     (m/s)

OVERFLOW ROUTE DETAILS
Name                Max Q U/S Max Q D/S Safe Q     Max D     Max DxV Max Width Max V      Due to Storm
Overland Flow           0.018     0.018      0.453     0.048      0.03    1.32       0.68 10% AEP, 10 min burst, Storm 8
High Flow Outlet             0         0     1.284         0         0       0          0
OF1                     0.035     0.035      0.908     0.034      0.02       4       0.46 10% AEP, 10 min burst, Storm 4



DETENTION BASIN DETAILS
Name                 Max WL            MaxVol       Max Q       Max Q      Max Q
                                                    Total       Low Level High Level
OSD Tank                      107.64            9.8       0.019      0.019         0

Run Log for DRAINS v2023.11.8726.15750 - 48 ELM ST DETENTION CALCS
{\colortbl;\red0\green0\blue0;\red192\green0\blue0;}Run Log for DRAINS v2023.11.8726.15750 - 48 ELM ST DETENTION CALCS.drn run at 14:02:56 on 13/6/2024 using Watercom Drains v2023.11.8726.15750

Flows were safe in all overflow routes.