Browse Forums General Discussion Re: Water tanks and building codes 2Apr 13, 2021 8:01 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: Water tanks and building codes 6Apr 13, 2021 9:40 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: Water tanks and building codes 9Apr 13, 2021 10:53 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: Water tanks and building codes 11Apr 13, 2021 11:39 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: Water tanks and building codes 14Apr 14, 2021 11:50 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: Water tanks and building codes 15Apr 15, 2021 8:22 am 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: Water tanks and building codes 17Apr 15, 2021 10:48 am 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: Water tanks and building codes 19Apr 15, 2021 11:06 am SaveH2O This is going up on my Wall Of Infamy. BTW, NCC Volume 2 3.5.3.5 states: "Downpipes must - (a) not serve more than 12 m of gutter length for each downpipe". I've seen that quoted all the time on other forums then people all argue about the interpretation of it. People say that can mean that if you have a 24m gutter you still only need a downpipe at each end so each only serves 12m. Re: Water tanks and building codes 20Apr 15, 2021 1:00 pm Ozgarden People say that can mean that if you have a 24m gutter you still only need a downpipe at each end so each only serves 12m. That is correct and it is something that I have posted many times to point out the absurdity of the reg. Suitably sloping such a gutter would result in a large height variance between the gutter's mid way high point and the low points at the downpipes. This in turn encourages fitting a minimal slope which then has slow water flow and an inadequate flushing capability. The 'brains' that be who are responsible for the poor BCA stormwater regs have also changed the wording several times. Prior to May 2007, the Building Code of Australia (BCA) stated: The spacing between downpipes must not be more than 12 m. This was revised on the 1st of May, 2007 to... “3.5.2.5 Downpipes - size and installation Downpipes must - (a) not serve more than 12m of gutter length for each downpipe; and (b) be located as close as possible to valley gutters and, if the downpipe is more than 1.2m from a valley, provision for overflow must be made to the gutter; and (c) be selected in accordance with the appropriate eaves gutter section as shown in Tables 3.5.2.2.” In effect, the above meant that two downpipes each serving 12 metres of gutter could be fitted at either end of a 24 metre long verandah, i.e., 24 metres apart. It also confused building surveyors and others because many thought that the gutter length served defined compliance, not adherence to the maximum allowable roof area drained. On May 1 2013, the BCA was amended to once again state "The spacing between downpipes must not be more than 12 m." And of course it has flopped again to the current regulation. Downpipes are invariably poorly positioned for aesthetics rather than function in any case yet still be compliant with the regs. This is why so many downpipes are fitted at the end of walls. There are also no (common sense) regulations requiring downpipes to be fitted to a section of lower storey gutter that an upper story downpipe discharges to via a tiny spreader. It is common to see an upper storey downpipe discharging a concentrated flow of water to the end of a gutter on a garage roof that has the downpipe fitted around the corner on the blind side. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Aesthetics subjugating function! And of course why not have NO downpipes at the front as part of the tidy up? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. That was always going to be a challenge and a test of patience. Full marks to your mate. Did you discuss the wet area near the trampoline? 16 17636 I want to build a decking to the drawn shape outlined in black. The problem is how close can I build to the gas hot water unit? Will I be able to build around it and be… 0 20451 |