Hi.
How much head room is needed for a wet system rain water tank.
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Thanks in advance
Kev
Browse Forums General Discussion Re: Wet charged systen 2Sep 27, 2020 11:13 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Wet charged systen 4Sep 28, 2020 12:03 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Wet charged systen 7Sep 28, 2020 1:02 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Wet charged systen 8Sep 28, 2020 8:41 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Wet charged systen 10Sep 28, 2020 9:01 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Wet charged systen 18Sep 28, 2020 2:49 pm ![]() I have just done a quick calculation. Let's imagine that the downpipe in the photo is a larger 90mm pvc stormwater pipe, the pipe length which includes the 90 degree elbows as equivalent pipe lengths is a total pipe length of 17 metres, there is 220mm head and all of the roof water is miraculously diverted to that one downpipe, the maximum discharge rate into the tank will be approximately 380 lpm. Friction losses (high turbulence at the 90 degree interface) through a tee's branch at the majority of other downpipes are about 50% greater than those at a 90 degree elbow. From the rear of the property 6 x 80mm down pipes connect to the 90mm then to the tank.Approx 40m run At the front there are 4 x 80mm downpipes that connect to the 90mm then joins the 90mm at the tank. Approx 25m run I live in Greenmount WA I've measured the head room at 145mm. From the bottom of the gutter to the top of the intent pipe. Hope this helps... Re: Wet charged systen 19Sep 28, 2020 3:07 pm ![]() ![]() I have just done a quick calculation. Let's imagine that the downpipe in the photo is a larger 90mm pvc stormwater pipe, the pipe length which includes the 90 degree elbows as equivalent pipe lengths is a total pipe length of 17 metres, there is 220mm head and all of the roof water is miraculously diverted to that one downpipe, the maximum discharge rate into the tank will be approximately 380 lpm. Friction losses (high turbulence at the 90 degree interface) through a tee's branch at the majority of other downpipes are about 50% greater than those at a 90 degree elbow. From the rear of the property 6 x 80mm down pipes connect to the 90mm then to the tank.Approx 40m run At the front there are 4 x 80mm downpipes that connect to the 90mm then joins the 90mm at the tank. Approx 25m run I live in Greenmount WA I've measured the head room at 145mm. From the bottom of the gutter to the top of the intent pipe. Hope this helps... Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Hi all Long time reader here, first time poster. My Mum bought a house a few years back and the downpipes off the bullnose verandah basically just went about a meter… 0 7861 DIY, Home Maintenance & Repair Thanks again. Yes they both share the same run and I get what you mean. Will involve a bit of digging but that’s ok. I’ll be cutting the tank up because it would… 4 6549 |