Browse Forums Building Standards; Getting It Right! Re: Downpipe compliance question- rainwater tank 2Aug 28, 2017 2:06 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Downpipe compliance question- rainwater tank 4Aug 29, 2017 1:54 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Downpipe compliance question- rainwater tank 7Sep 03, 2017 10:01 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Downpipe compliance question- rainwater tank 9Sep 13, 2017 9:25 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Downpipe compliance question- rainwater tank 11Nov 07, 2018 6:53 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Downpipe compliance question- rainwater tank 12Nov 07, 2018 10:48 pm Well in an article (2016) the NCC mentioned that to achieve a 6 star standard rating there must be provided a minimum 2000litre rainwater tank (+other specs). How do you cite that in a drawing? The article https://www.nationalpolyindustries.com. ... australia/ This link for Victorian 6 star achievements notes! https://www.google.com.au/url?sa=t&sour ... 1593928881 I get this requirements where are they specified: "Buildings will need to be designed to ensure that roof water from a minimum of 50 square metres of roof catchment area is: collected by a drainage system (gutters and downpipes); and stored in a minimum 1000 litre rainwater tank; [I need the standard cited, what regulation?; is it relevant to BCA standard?] and is plumbed to at least a toilet or water heater or all laundry cold water outlets." Sustainable Design Requirements For New Houses, House Extensions & Transportable Buildings Development Guide No. 19 Any help welcomed! Cheers Re: Downpipe compliance question- rainwater tank 13Nov 08, 2018 6:04 am The requirement and regulations for rainwater tanks varies between states and even regions within States. Your situation depends on where you live and sometimes your council wikll have over-rides. There is not a one all-encompassing rule and not all States require water tanks on new homes. The 2,000 L tank servicing a minimum 50 sq m roof catchment area is a Victorian 6 star requirement (are you in Victoria?) but a tank is not required if you specify a gas boosted solar HWS or when the property is connected to recycled water...water that you are charged for. "Roof catchment" is deemed to be the roof area as looked at as a flat plan area but factored for the slope by using a multiplier found in AS/NZS 3500.3 which allows for wind driven rain. For example, the common 22.5 degree roof slope is factored as 1.21 which would give a plan area of 40 sq m draining to one downpipe a factored or roof catchment area of 48.4 sq m. In this situation, two downpipes would be required. Note that a standard Victorian slotted 115mm quad gutter would not be compliant to drain a 48.4 sq m roof catchment area in any case. NSW is bound to BASIX. South Australia has a tiny 1,000 L mininum tank capacity requirement and they don't allow the use of manual switching devices! This variation is found in the NCC. The tank size is also dictated by local council rules which may include a detention requirement. In these cases, the tanks can be very large. Different State variations are found in the NCC but local councils can override national regulations and these mandates do not appear in the NCC. Your builder should know the local council overrides if any. The BCC minimum roof area harvested mandate I mentioned earlier is one example. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. 18 90425 DIY, Home Maintenance & Repair But if it is a ground level open pit, then it is not a charged system. No surprises there. The pipes have obviously been altered and there would be a reason for this.… 3 31261 Grate, thank you! RexChan if thats the reason i could sleep well without thinking about additional cost. But 1st i'll need to read about NRV cleaning/replaing stuff. I… 7 31120 |