Stormwater Management Plan 12_05_26

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            THE TANK SUPPLIERS FINAL
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           DETAILS TO BE CONFIRMED BY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           ARCOS PRIOR TO INSTALLATION

                                                                                                                                                                                                                                                                                                                                                         EXISTING SURFACE




                                                                                                                                                                                                                                                                  PAVEMENT AS                                                                                              600x600 SQUARE
                                                                                                                                                                                                                                                                  SPECIFIED                  DESIGN SURFACE                                                                GRATED INLET

                                                                                                                                                                                                                                                                                                                                                                                                                                 ROOF SLAB TANK
                                                                                                                                                                                                                                                                                                                                                                                                                                                            ENSURE MIN
                                                                                                                                                                                                                                                                                                                                                                                                                                                            350mm COVER




                                                                                                                                                                                                                                                                                                                                                                                                                                                                            ROOF WATER STUB, TO
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            DIRECT ROOF RUNOFF TO
                                                                                                                                                                                                                                                                                                                                                                                                                                                    FLOW                    RETENTION TANK
                                                                                                                                                                                                                                                                                         FLOW




                                                                                                                                                                                                                                                                                                                                                                                                    STORAGE VOLUMES:                               STAINLESS STEEL SHEET WITH BELOW ORIFICE ARRANGEMENT:
                                                                                                                                                                                                                                                                                                                                                                                                    RETENTION MIN 75kL                             70mm Ø HOLE AT THE BASE
                                                                                                                                                                                                                                                                                                                                                                                                                                                   105mm Ø HOLE 0.5m ABOVE THE BASE




                                                                                                                                                                                                                                                                                                                     1.60
                                                                                                                                                                                                                                                                                                                                                                                                    DETENTION MIN 76kL
                                                                                                                                                                                                                                                                                                                                                                                                     TOTAL MIN 151kL                               90mm Ø HOLE 1.0m ABOVE THE BASE
                                                                                                                                                                                                                                                                                                                                                                                                                                                   100mm X 600mm WIDE RECTANGULAR WEIR AT THE TOP


                                                                                                                                                                                                                                                                                                                                                                                                                                                   FLOW
                                                                                                                                                                                                                                                                                  9.5kL TANKS, 8 TANKS
                                                                                                                                                                                                                                                                                  FOR RETENTION & 8
                                                                                                                                                                                                                                                                                  TANKS FOR DETENTION



                                                                                                                                                                                                                                                                                                                                                                                                   2.25W X 3.25L EACH TANK
                                                                                                                                                                                                                                                                                                                     BASE OF TANK                                                                                                                  BELOW GROUND TANK OSD
                                                                                                                                                                                                                                                                                                                                                             4.50W X 26.0L TOTAL                                                                   SYSTEMS IN ACCORDANCE
                                                                                                                                                                                                                                                                                                                                                                                                                                                   WITH AS3500.3




                                                                                                                                                                                                                                                                                                                                 DETENTION TANK DETAIL
                                                                                                                                                                                                                                                                                                                                                                               SCALE 1:50
                                          Filename: C:\PROJECTS\240444 - SOCIAL HOUSING - 62 LAKE MACDONALD DRIVE, COOROY\3.0 CAD\DRAWINGS\OPW\240444-OPW-C-410.DWG
Last Plotted: 2026-04-24 9:24 AM
Last saved by: JACKHARRISON(2026-04-16)




                                                                                                                                                                                                                             North Point   Scale                          Horiz. Datum      Client                           Consultant                                                                                      Project                                                                  Drawing
                                                                                                                                                                                                                                                                            LOCAL                                                                                                                                                                                          Drawn              JH                                            Project No.        Drawing No.           Rev No.
                                                                                                                                                                                                                                                                                                       COAST2BAY                                                                                                                             SOCIAL HOUSING                                                           STORMWATER TANK
                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Design             JH
                                                                                                                                                                                                                                                                                                     HOUSING GROUP                                                                                                                     OPERATIONAL WORKS - CIVIL                                                          SECTION
                                                                                                                                                                       C MINOR UPDATE TO SET               24.04.26 LS
                                                                                                                                                                                                                                              0m
                                                                                                                                                                                                                                              A1 1:25
                                                                                                                                                                                                                                                        0.625   1.25
                                                                                                                                                                                                                                                                          Vert. Datum
                                                                                                                                                                                                                                                                             AHD
                                                                                                                                                                                                                                                                                                                                                                                                                                        62 LAKE MCDONALD DRIVE,            Check              LS
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             240444           OPW-C-411               C
                                                                                                                                                                       B FOR TENDER                        16.04.26 LS                                                     RL Datum                                                                                             CIVIL | STRUCTURAL | GEOTECHNICAL                           COOROY, QLD, 4563              Approved                        Approved Date   Signed                                            Sheet
                                                                                                                                                                       - -
                                                                                                                                                                      Rev           Revision Description
                                                                                                                                                                                                               -     -
                                                                                                                                                                                                             Date Approved
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                           RPEQ    21223
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           16.04.26                     Status   FOR TENDER
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             Size     A1