IDAS Form 27 - Cooroibah

What are the details of the proposed construction materials? (E.g. earth, concrete,
rock fill, steel, timber, sand, etc.)




In reference to the diagrams below, provide the following details of the proposed barrier:
                                             • total crest height (D)                                                    metres
                                             • thickness (A) of crest                                                    metres
                                             • height of spillway / bywash (H)                                           metres
                                             • width of spillway / bywash inlet (W)                                      metres
                                             • base width (B)                                                            metres
                                             • internal diameter (O) of outlet pipe/works and                             milli-
                                               discharge capacity                                                        metres
                                             • length of wall (L)                                                        metres

Cross section of barrier                     • distance of backup from barrier wall at full                              metres
                                               supply level
                                             • volume of storage.                                                         mega-
                                                                                                                           litres
                                             • If raising an existing waterway barrier:
                                                - additional height above existing crest                                metres
                                                - method of raising (e.g. capping crest, inflatable bag, gates etc.).




Aerial view of waterway


Does the application involve more than one barrier addressed by this section?
         Yes      - generate another section 4 response for each barrier and submit with the application.
         No       - if the application involves another type of barrier identified in section 3, go to the relevant section
                    identified.
                  - if the application does not involve another type of barrier identified in section 3, go to section 7.




                                                                                           IDAS form 27—Waterway barrier works
                                                                                                     Version 3.2—3 August 2015