20220206 48 Elm St SWMP

DRAINS RESULTS - DETENTION CALCS - 5% 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              107.26               0.022
New Inlet Pit      107               0.022

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 0.05       0.022     0.028     5                    5            5 5% AEP, 10 min burst, Storm 6
Developed        0.055     0.047     0.014     5                    5            5 5% AEP, 5 min burst, Storm 1
Carpark / Landscaping
                  0.02         0       0.02    5                    5            5 5% AEP, 10 min burst, Storm 8
Roofwater        0.042     0.042          0    5                    5            5 5% 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      0.021       1.16 107.562 107.069 5% 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     0.02     0.02     0.453       0.05      0.04     1.4       0.69 5% AEP, 10 min burst, Storm 8
High Flow Outlet     0        0     1.284          0         0       0          0
OF1              0.039   0.039      0.908     0.035       0.02       4       0.49 5% AEP, 10 min burst, Storm 8



DETENTION BASIN DETAILS
Name     Max WL     MaxVol            Max Q       Max Q      Max Q
                                      Total       Low Level High Level
OSD Tank        107.74           11.6       0.021      0.021         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 14:03:29 on 13/6/2024 using Watercom Drains v2023.11.8726.15750

Flows were safe in all overflow routes.