Browse Forums Owner Builder Forum Re: gutter/fascia high slotted? 2May 21, 2014 9:30 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: gutter/fascia high slotted? 4May 30, 2014 12:24 am gav89z what is the suggested nominal diameter for stormwater downpipes connecting the high slotted gutter? As per my previous post, the roof area drained to each downpipe regulates the minimum gutter cross sectional area and the downpipe size for every region. You can fit larger downpipes than the regulated size but a downpipe's best location is more important than bigger downpipes or compliance although compliance (which is frequently ignored anyway) has precedence. gav89z I'm looking at round pipes in uPVC as due to having above ground rainwater tank colorbond is not an option, so will have the pvc downpipes painted. You can usually divert a metal downpipe if it is very close to a tank but not when the downpipe is away from the tank. Diverting one downpipe is usually insufficient and so circular 90 mm uPVC stormwater pipes are often used for additional diversion. For larger roof areas or high intensity rainfall areas, 100 mm uPVC DWV pipes are often used but some manufacturers also make 100 mm uPVC stormwater pipes. Additional downpipe diversions usually entail plumbing circular uPVC pipes along walls (which is ugly) or else burying the pipes so that they join to a vertical riser that rises up the side of the tank to the tank's top inlet. This however has a few problems. 1. During heavy rain, water from the additional roof areas harvested may exceed the tank's overflow capacity, causing the tank to overtop. 2. Wet systems don't generate the required velocity up the vertical riser to flush most of the detritus from the pipes. This can lead to blockages and stagnation if the underground pipes are not regularly flushed. 3. The tank continues to receive additional water and suspended sediment after the tank fills. gav89z Also when they say 100 x 50 downpipes, what's that reffering to.. It means that the pipe measures 100 mm x 50 mm. A photo was posted a couple of days ago in another thread. Also read the post the link takes you to as I discuss gutter cross sectional areas and downpipe sizes. viewtopic.php?p=1179593#p1179593 You have posted your query in the owner-builder sub forum. Are you an owner-builder? To put it bluntly, most people who build with project builders get ripped off big time and end up with sub standard systems. If you are owner building, you have the perfect chance to save a heap of money and have a rainwater harvesting system that will harvest and deliver a good supply of clean water. I can advise on this if you like. For example, your mention of a single tank means that you may not have considered 2 smaller narrow diameter round tanks that you can use as a settling system. You also have to opportunity to avoid paying too much for a wrongly sized pump (most are). You also have the opportunity to have the pump correctly plumbed. Many are not. You also have the opportunity to know about your best and cheaper option for your mains water switching device. You also don't need to have a tank sited next to the house and a tank sited away from the house doesn't always need an overflow connected! 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. No, I even have sections of narrowness where the tiles won't slide up any further. When I manage some spare time, I might play around with the first DIY part of my… 7 4926 DIY, Home Maintenance & Repair This is a very challenging situation, made much harder by not being on site. Firstly, I think that I originally… 10 8965 Thank you so much. We ended going with the terrain that’s part of our brick. 2 2534 |