Browse Forums Eco Living Re: Water Tanks - Difference to make "drinking" safe 3Dec 13, 2016 9:56 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 - Difference to make "drinking" safe 4Dec 13, 2016 10:58 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 - Difference to make "drinking" safe 6Dec 14, 2016 12:20 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 - Difference to make "drinking" safe 8Dec 14, 2016 4:55 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 - Difference to make "drinking" safe 10Dec 16, 2016 11:08 pm planeguy He was thinking a wet system, to minimise the visibility of the guttering. When you have one tank and several downpipes, a dry system will entail having downpipes diverted along walls. It can get ugly, particularly when the tank is also a poor colour choice and the uPVC pipes are not painted. I will get around to doing a separate informative post about wet systems. planeguy Can you comment on the W gutter, versus one downpipe on each end of the gutter - why is that preferred? Similarly, does that mean on the small roofs that will have a single downpipe, does that mean they should have a downpipe in the middle and not the end? The architect won't like the look of that, so what's the purpose? Architects subjugating function for aesthetics is the reason why most display homes don't have downpipes visible from the street view and why downpipes are positioned at the end of walls. Eaves gutters are installed with a slope so that the water will drain efficiently and not pool in the gutter when it stops raining. The minimum slope is 1:500, i.e., 2 mm per metre. The gutter's high points determine the roof areas drained to each downpipe and the low points are where the downpipes are fitted, hence my reference to an elongated W pattern. Preferably, gutters should never be installed with the minimum slope as house settling can later result in the gutters flowing backwards and/or pooling water. A 1:300 slope (3.33mm per metre) should be considered the preferable minimum. Imagine two straight gutters, each 20 metres long. Gutter 1 has the downpipes positioned at the end of the walls as is most common. If the last short length of gutter doesn't slope towards the downpipe as is also common, the water will pool after rainfall but not very much, probable just a few mm but that section will also build up sediment. Decayed organic matter is negatively charged and metal is positively charged. Gutters rust because of contact with sediments, not because they get wet. The tolerances also allow gutters to pool water up to 10 mm deep for 3 days after it rains and so there is no regulatory requirement to slope the last section of gutter. Gutter 1 will have a high point mid way along and allowing for 0.5 metres of guttering between the downpipes and the end caps, the distance between each downpipe and the central high point will be 9.5 metres. If the gutter has the minimum 1:500 slope, the gutter would drop 19 mm to the downpipe but a better 1:300 slope would see almost 32mm of drop and this could be considered unsightly...but you do have a two storey roof. A downpipe at the far end (past the blue roof) also requires more sub surface pipe work because it is further from the tank. Our Gutter 2 example would have two downpipes positioned at 1/4 and 3/4 distance with the high points at the ends and the middle. 5 metres of guttering would flow from either side to the downpipes and a superior 1:250 slope would only result in a 20mm drop between the low and high points. Drainage would be very efficient and the guttering would carry less load. For rainwater harvesting, short gutter runs have more efficient first flush collection. Function Vs aesthetics! planeguy Reading up about tank types, it looks the material choice is fairly even for our use case in metal vs polymer types. Metal 10kl tanks look to be about $300 smaller, but look better. Do you think there is any performance difference? Metal tanks are dearer but they (should) last longer although good poly tanks do last a long time. Metal tanks haven't been without their problems though and there was a (belated) recall several years ago on metal slimline tanks after numerous structural failures. viewtopic.php?f=35&t=74141 Another brand of metal tank leached lead into the water. http://www.examiner.com.au/story/133518 ... ter-tanks/ http://www.dhhs.tas.gov.au/news/2013/le ... ater_tanks There are some good looking poly tanks but avoid the light colours if the tank will receive UV. My main tank is a Clark poly corrugated tank, it looks good and is good. EDIT The post below discusses a very common but very poor roof drainage design that is nevertheless compliant. Gutters overflowing during even medium to light heavy rain is the result. viewtopic.php?p=1289026#p1289026 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Block of two storey townhouses requires painting on the roof. A brick parapet wall separates each unit and extends above the tiled roof. The parapet walls require sealing… 0 3502 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 17363 |