2008/0169 Response to information request - 71 Seaview Tce Sunshine Beach · 132008.169

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                                                                                                                URBAN




To ensure scour will not occur at the outlet of the drain and pipe system, scour protection will be implemented.
This will include a 100mm concrete base with large boulders, river rock and plantings to be implemented to
dissipate velocities and ensure flows will spread prior to ultimate discharge off site. Details of the proposed scour
protection and spreading of flows is shown in Figure 7.

                       VOIDS TO BE PLANTED WITH RUSH/REED
                       SPECIES (SUBJECT TO LANDSCAPE
                       DESIGN)PLANTING HOLES CUT WITHIN
                       GEOTECTILE ARE TO BE APPROXIMATELY 1/3
                       LARGER THAN PLANT STEM DIAMETER.


                                                                                           `P




                                                                                            POTENTIAL 1 IN 2
                                                                                            BATTER ROCK OR
                                                                                            BOULDER PLACEMENT
                                                                                            AND PLANTINGS




                       TYPICAL HEADWALL BOULDER / GRAVEL PLACEMENT AND PLANTING
                                                                NTS




                                          PRE-CAST HEADWALL
                                                                            5m min
                                                               LARGE BOULDER DIA DIRECTLY
                                                               PROPORTIONAL TO DIAMETER
                                                               OF PIPE AT OUTLETIINLET.
                                                               EMBEDED 75mm INTO MORTOR

      1                                                                                    j- 200 to 300 BOULDER/RIVER ROCK
                        0
                                                              1INg
                        0
                                                  0       I             O




                     150 DEPTH OF WASHED RIVER
                     GRAVEL 75 TO 100mm DIA                           X100 THICK CONCRETE
                                                                         MORTOR




                                                       SECTION A - A
                                                               NTS


                                               Figure 7 - Drain Outlet Details




 SITE BASED STORM WATER MANAGEMENT PLAN - Revision D          71 Seaview Terrace, Sunshine Beach                                                 8