Browse Forums Owner Builder Forum 1 Mar 20, 2024 2:09 pm Owner builder looking to subcontract out an upper level deck with awning build. I live in the Northern Beaches council area in Sydney. The upper deck will be 6m above the ground. I need DA approval and intend to submit the application myself. I have structural engineering, elevation and site plans but need to get my head around stormwater issues. I intend to cover the deck with 16x3m insulated panel roof (48 sqm) from the existing titled roof gable. The existing title roof gutter will become impossible to service because of the awning and solar panels so I am going to remove this section of roof gutter and flow 24sqm of titled roof onto the awning. At 72sqm do I need a water retention device? Can I include this in the scope of the roofer or do I need stormwater plumbing? Re: Water retention tank 2Mar 25, 2024 6:46 am You just need the gutter and downpipe sizes to be compliant with the NCC for the roof area harvested and have the downpipes connected to a LPOD. You need to ask your council about any retention tank requirements. The tank will need an overflow pipe connected to the stormwater if the tank would otherwise overtop if an overflow pipe was not connected 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Building Standards; Getting It Right! Thank you for the generous offer. I need to get the plumber out to give me an explanation. As mentioned I haven't seen any rain water discharge from pipes 1& 3. It… 7 12745 Can a plumber put a tap on a rain water tank which is full? Tank is similar to one in photo. Cheers. 0 2713 As is per usual for many of the past failed RWH regulations, it is probably traceable to a bureaucrat who's ego overrode the need to seek the appropriate expert… 1 2131 ![]() |