20220206 48 Elm St SWMP

DRAINS RESULTS - DETENTION CALCS - 0.5EY

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               0.013
New Inlet Pit   106.99               0.013

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-development0.026       0.013     0.015     5                   5            5 0.5EY AEP, 15 min burst, Storm 6
Developed        0.032     0.025       0.01    5                   5            5 0.5EY AEP, 10 min burst, Storm 10
Carpark / Landscaping
                 0.013         0     0.013     5                   5            5 0.5EY AEP, 10 min burst, Storm 2
Roofwater        0.026     0.026          0    5                   5            5 0.5EY 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      0.014       1.06 107.334 107.051 0.5EY AEP, 15 min burst, Storm 5

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 0.013      0.013      0.453     0.043       0.03    1.13       0.64 0.5EY AEP, 10 min burst, Storm 2
High Flow Outlet     0        0     1.284          0         0       0          0
OF1              0.026   0.026      0.908       0.03      0.01       4       0.43 0.5EY AEP, 10 min burst, Storm 9



DETENTION BASIN DETAILS
Name     Max WL     MaxVol           Max Q       Max Q      Max Q
                                     Total       Low Level High Level
OSD Tank        107.45           6.2       0.014      0.014         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 14:00:57 on 13/6/2024 using Watercom Drains v2023.11.8726.15750

Flows were safe in all overflow routes.