Browse Forums Eco Living Re: Rainwater harvesting 2Apr 30, 2020 5:50 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: Rainwater harvesting 4May 02, 2020 12:37 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: Rainwater harvesting 6May 02, 2020 9:40 pm You can easily plumb pumped water to most cisterns without the expense of a mains water switching device, it is a simple and cheap manual system that you can see if you Google "Victorian Building Authority plumbing technical solution sheet 99.01". It has diagrams and explains what can be also found in AS/NZS 3500.3 which the Plumbing Code of Australia (PCA) references. The PCA is Part 3 of the National Construction Code (NCC). Having 100x75mm downpipes indicates good amounts of roof water flowing to each downpipe. Underground tanks are expensive and I can also see sediment issues. If you had a good size above ground tank supplied by a pit/pumped system, the pit would have to be large to avoid the pump frequently cycling plus the pump would obviously need power supplied, would a power supply route create a problem? In this pumped scenario, have you decided where the tank would be sited? If you wanted cleaner water, you could have two tanks and pump water to one tank (a settling tank) that transferred settled water via a balance line to a second tank that supplied the pump. You could also have two or three small diameter tall tanks each filled by their own dry system downpipe. It is usually easy to link tanks and have one pump but a disadvantage would be plumbing three overflow pipes. Are you against having a largish tank next to the house? If acceptable, you could have one downpipe directly fill the tank. If you could see where the gutter's high points are that determine the roof area harvested and if the roof areas considered were on the weather side for maximum yield, you could choose a high yield downpipe and calculate an approximate annual yield. If insufficient for your needs, you could also harvest one or more remote downpipes by having some permanent 32mm or 40mm pipes plumbed at ground level between the remote downpipe(s) and the tank or else just connect an 18mm or 25mm hose between a downpipe and the tank whenever needed. A product I have would be connected to the remote downpipes to enable this and this would almost certainly be the easiest and cheapest option. Advantages include having the water filtered, a first flush provision and overflow pipes not needed. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. There is a whole lot more to know than just the answers you seek but they are a good start. Overflow outlets have a mosquito proof mesh. These… 3 8423 18 90484 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 31281 |