Browse Forums Pools & Spas Re: Pool Suction Line 3Oct 26, 2014 9:37 am Owner Building at Jimboomba Woods in Logan City Qld. Blog : http://bandlnewhomebuild.blogspot.com H1 thread : viewtopic.php?f=38&t=68283 . Re: Pool Suction Line 4Oct 26, 2014 10:25 am Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Pool Suction Line 8Oct 26, 2014 5:17 pm Owner Building at Jimboomba Woods in Logan City Qld. Blog : http://bandlnewhomebuild.blogspot.com H1 thread : viewtopic.php?f=38&t=68283 . Re: Pool Suction Line 9Oct 26, 2014 5:51 pm bpratt I'm not qualified to state one way or the other, but with pumping water from dam to dam years ago it was always better to have larger suction hoses than outlet hoses. It was always desired to make the pump suck easier, particulary if you had more than one 90 degree elbow, and for pools chances are is that you have multiple 90 degree corners in the system, and they all effect the flow. Makes sense and yes there would be quite a few 45 and 90 degree fittings under ground. I am kicking myself for not taking pics before the fillid it all in. bpratt The sand allows the pipes to move around a bit, which happens around a pool area quite a lot, particulary in clay soils. The ground dries out and shrinks, then when it gets wet it expands, meanwhile the pipes in the ground get twisted and bent as they effectively 'concreted' in place (even though there's no concrete!). Do you remember what soil type your house was built on ? I'm guessing H1 or worse. Even M class soil can be a problem with pool plumbing. Ahh I understand now. I'm in Scarborough WA, a giant sand dune, soil drains real quick over here. I don't think I'll have any probs on that score. I do recall that the pipes were not buried overly far down as well, will make the task easier I guess (up until the skimmer any way), but may be fun and games come re paving. I may try and get a paving guy for that I think. Thanks for you info, much appreciated. My fear was that I may actually make things worse by changing the suction line to 50 whilst leaving the returns at 40mm. As I will have to disconnect all my pad plumbing to move the enclosure to rip up the paving, I may re-plumb the surface pad plumbing in 50mm also, would this be beneficial? Re: Pool Suction Line 10Oct 26, 2014 6:26 pm venno As I will have to disconnect all my pad plumbing to move the enclosure to rip up the paving, I may re-plumb the surface pad plumbing in 50mm also, would this be beneficial? Probably not of any benefit at all, as you'll end up with a mix of 40 and 50mm pipes and fittings, and since your pump is highly likely to have only a 40mm outlet it won't make any difference unless you do all your return pipes at 50mm ... not worth the expense if you ask me.... only do it if you have to replace the whole pipe with 50mm. Owner Building at Jimboomba Woods in Logan City Qld. Blog : http://bandlnewhomebuild.blogspot.com H1 thread : viewtopic.php?f=38&t=68283 . Re: Pool Suction Line 11Oct 26, 2014 7:21 pm bpratt Probably not of any benefit at all, as you'll end up with a mix of 40 and 50mm pipes and fittings, and since your pump is highly likely to have only a 40mm outlet it won't make any difference unless you do all your return pipes at 50mm ... not worth the expense if you ask me.... only do it if you have to replace the whole pipe with 50mm. I have just checked all my equipment and they all have 50mm entry/exit by default that have been adapted down to 40mm using either tail couplings or pvc reducers. Hi everyone, Looking for some advise. We are about to build an above ground pool in our backyard. There is a private sewer line running under the pool at 1.6m… 0 11985 In WA zero lot is actually zero lot. We build 10mm in from the boundary. My house and my neighbours house have garages that sit only 20mm apart. When I had our roof done… 3 7151 I am building in claymore NSW and this is shown in the building envelope plan. … 0 10378 |