Thorfun Posted February 20, 2021 Share Posted February 20, 2021 50 minutes ago, Nickfromwales said: My answer to @nod is because that’s the question he asked; The size of pipe required to do a 30m run, typically, will sit at 25mm. If it was north of 50m then I’d look at upsizing, but the typical offering from the domestic water supply will be within the Fresno’s of the smaller pipe bring acceptable. My comments downstream were relative to the points made as the thread drifted ok cool. that makes sense and thanks for clarifying. as my run is only about 30m I'll go for a 25mm pipe too. Link to comment Share on other sites More sharing options...
Nickfromwales Posted February 20, 2021 Share Posted February 20, 2021 And I have no idea what a Fresno is.....poxy phone. Should have been realms of the smaller pipe being 16 minutes ago, Thorfun said: ok cool. that makes sense Minus the typos, yes lol. Should really read twice before hitting send ?. 1 Link to comment Share on other sites More sharing options...
Oz07 Posted February 20, 2021 Share Posted February 20, 2021 Shouldn't people check local pressure before deciding? Link to comment Share on other sites More sharing options...
TonyT Posted February 20, 2021 Share Posted February 20, 2021 Flow & Pressure should be checked, but that can change depending on the network which can change with local issues, bursts, extra load on the network such as new housing schemes.lots of variables. Link to comment Share on other sites More sharing options...
Nickfromwales Posted February 20, 2021 Share Posted February 20, 2021 1 hour ago, Oz07 said: Shouldn't people check local pressure before deciding? Mostly down to the length of the run. 25mm is what most settings will happily survive on, but then you’d upsize according to how adverse the run is between street and stopcock. But yes, a survey is always recommended in every instance, where practicable. Link to comment Share on other sites More sharing options...
Thorfun Posted February 20, 2021 Share Posted February 20, 2021 19 minutes ago, Nickfromwales said: Mostly down to the length of the run. 25mm is what most settings will happily survive on, but then you’d upsize according to how adverse the run is between street and stopcock. But yes, a survey is always recommended in every instance, where practicable. ok, so how would one go about doing that survey? we are living on site in the existing building and have a mains water supply but we want to get a new supply for the new house as it's at the other end of the plot so rather than run a pipe all the way around the existing building and up the garden I feel it'll be easier to get a new supply. do I just put a water pressure gauge on our outside tap that I'm 99% sure comes straight off the meter as I had to fix a leek under the garden? or is there something more scientific than that? Link to comment Share on other sites More sharing options...
Nickfromwales Posted February 20, 2021 Share Posted February 20, 2021 Try doing litres per minute flow at the outside tap, Link Then pressure; static ( with all taps shut first ) then dynamic ( with the kitchen sink tap going flat out ). Link Let us know the results. If the results come back poor, then you will need to eliminate the possibility of a compromised mains pipe, so you’d then need to dig down by the street connection ( external stop tap in the ground ) where it enters at your boundary and connect to that temporarily and re-perform the survey. 1 Link to comment Share on other sites More sharing options...
Oz07 Posted February 21, 2021 Share Posted February 21, 2021 Or for the poor man's test like mine if you live in an area where pressure is crap (technical plumbing term) and you're waiting ages for a bucket to fill at tap just spend the extra 200 or so to upgrade to 32mm and be satisfied you've done all you could have... 1 Link to comment Share on other sites More sharing options...
Nickfromwales Posted February 21, 2021 Share Posted February 21, 2021 4 hours ago, Oz07 said: Or for the poor man's test like mine if you live in an area where pressure is crap (technical plumbing term) and you're waiting ages for a bucket to fill at tap just spend the extra 200 or so to upgrade to 32mm and be satisfied you've done all you could have... In a nutshell. Link to comment Share on other sites More sharing options...
Thorfun Posted March 2, 2021 Share Posted March 2, 2021 so, I just went ahead and put an application in for a 32mm pipe (yes @Nickfromwales, I am a bit lazy and didn't do the testing, sorry.) and Southern Water have come back with this: As per our calculations, the proposed fitting details would require a 50mm OD pipe size with the flow rate of 0.8l/s. Please confirm the pipe size required for the new house. I wasn't even given the option for a 50mm pipe when creating the application. the choice was 32mm or 25mm. Any one able to assist in what they're proposing? 1 Link to comment Share on other sites More sharing options...
Mr Punter Posted March 2, 2021 Share Posted March 2, 2021 Just tell them you are using 32mm pipe. 50mm will be expensive, expensive fittings and meter and not difficult to install. 1 Link to comment Share on other sites More sharing options...
Nickfromwales Posted March 2, 2021 Share Posted March 2, 2021 Crazy. You don't need more than 32mm with a cuffing sprinkler system !! The last time I specified 50mm was where there were 3x 400L cold mains accumulators and a pump in a garage, and we needed to feed the house, and I needed a bigger pipe to retain the stored energy potential from the accumulators without hinderance. That's 'hooj'..... 1 Link to comment Share on other sites More sharing options...
Thorfun Posted March 2, 2021 Share Posted March 2, 2021 thanks guys. sticking to 32mm. ? Link to comment Share on other sites More sharing options...
Nickfromwales Posted March 2, 2021 Share Posted March 2, 2021 "Peckham spring" ? LOL. 1 Link to comment Share on other sites More sharing options...
Thorfun Posted March 2, 2021 Share Posted March 2, 2021 2 minutes ago, Nickfromwales said: "Peckham spring" ? LOL. rumbled Link to comment Share on other sites More sharing options...
Nickfromwales Posted March 2, 2021 Share Posted March 2, 2021 1 minute ago, Thorfun said: rumbled So, can I have 50% off my first order of N'evian? Link to comment Share on other sites More sharing options...
Thorfun Posted March 2, 2021 Share Posted March 2, 2021 18 minutes ago, Nickfromwales said: So, can I have 50% off my first order of N'evian? sure. 50% off the 'special' buildhub members rate of 200% rrp. 1 Link to comment Share on other sites More sharing options...
Thorfun Posted March 2, 2021 Share Posted March 2, 2021 23 minutes ago, Thorfun said: sure. 50% off the 'special' buildhub members rate of 200% rrp. @Nickfromwales maybe you can bottle those tears and sell it on? Link to comment Share on other sites More sharing options...
Nickfromwales Posted March 2, 2021 Share Posted March 2, 2021 Just now, Thorfun said: @Nickfromwales maybe you can bottle those tears and sell it on? Words are like weapons...they wound some times. 1 Link to comment Share on other sites More sharing options...
Onoff Posted March 2, 2021 Share Posted March 2, 2021 24 minutes ago, Nickfromwales said: Words are like weapons...they wound some times. Thanks for sharing that. Link to comment Share on other sites More sharing options...
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