Water Posted June 3, 2021 Share Posted June 3, 2021 Hi all, Came back to the house today to see the builders had chased some of the pipework into the wall. I'm a bit concerned affect this has on the structural integrity of the wall. Am I being too cautious? Link to comment Share on other sites More sharing options...
Sjk Posted June 3, 2021 Share Posted June 3, 2021 1 Link to comment Share on other sites More sharing options...
Water Posted June 3, 2021 Author Share Posted June 3, 2021 Thanks! Link to comment Share on other sites More sharing options...
nod Posted June 3, 2021 Share Posted June 3, 2021 2 hours ago, Water said: Hi all, Came back to the house today to see the builders had chased some of the pipework into the wall. I'm a bit concerned affect this has on the structural integrity of the wall. Am I being too cautious? It was quite common once over Not now Even the gas pipes are left on the surface and enclosed with drywall adhesive Link to comment Share on other sites More sharing options...
Vijay Posted June 3, 2021 Share Posted June 3, 2021 pic no longer working? Link to comment Share on other sites More sharing options...
Nickfromwales Posted June 3, 2021 Share Posted June 3, 2021 We retrospectively cut doorways into load besting walls, so a bit of chasing will be of zero detriment. Electricians will do that 4 times or more in the same wall before breakfast. Zero BCO or structural issues / concerns have ever been raised in the last 25+ years of doing this exact work. Time to put more tonic in with the gin 1 Link to comment Share on other sites More sharing options...
Water Posted June 3, 2021 Author Share Posted June 3, 2021 try again Link to comment Share on other sites More sharing options...
TonyT Posted June 3, 2021 Share Posted June 3, 2021 Don’t you denso or tape the pipe to stop any cracking/ adverse reaction to render/plaster? Link to comment Share on other sites More sharing options...
MattSu Posted June 3, 2021 Share Posted June 3, 2021 48 minutes ago, Water said: try again I personally wouldn't have gone that route, I would have just surface mounted the pipes and boxed them in. Vertical chases are one thing, I wouldn't be too happy about a horizontal chase like that. How deep is it? Looks like a 32mm pipe can easily fit in it? I wonder how much brick is left! Link to comment Share on other sites More sharing options...
Water Posted June 3, 2021 Author Share Posted June 3, 2021 Yeah that was my concern, they blocks are 100 thick but I'll have to get back down there and measure the depth. Link to comment Share on other sites More sharing options...
Water Posted June 3, 2021 Author Share Posted June 3, 2021 (edited) Well I guess the block work will have to be replaced. ffs. Unless I have misunderstood the building regulations. Edited June 3, 2021 by Water Link to comment Share on other sites More sharing options...
Vijay Posted June 3, 2021 Share Posted June 3, 2021 are they planning to fill in the hole around the pipes? Link to comment Share on other sites More sharing options...
Water Posted June 3, 2021 Author Share Posted June 3, 2021 Yeah they are planning to fill Link to comment Share on other sites More sharing options...
Nickfromwales Posted June 3, 2021 Share Posted June 3, 2021 (edited) Yatzee! I automatically assumed vertical chases. That's a chunk missing from that wall. Sorry, I now agree with your concerns. 4 hours ago, MattSu said: I would have just surface mounted the pipes and boxed them in Yup. 100% or popped the floors up. At the very most I would have removed just the render and set the waste pipe as far back as possible to reduce the footprint of the boxing in. Not even sure if backfilling with a stiff cement compo would satisfy here. Edited June 3, 2021 by Nickfromwales Link to comment Share on other sites More sharing options...
DragsterDriver Posted June 4, 2021 Share Posted June 4, 2021 I’m not keen on that, or burying the push fittings in plaster. Link to comment Share on other sites More sharing options...
markc Posted June 4, 2021 Share Posted June 4, 2021 Holy Crap! Ive seen some deep horizontal chases pass BCO but never at the bottom and only being short run. that needs sorting Link to comment Share on other sites More sharing options...
Big Jimbo Posted June 4, 2021 Share Posted June 4, 2021 IMO you are right to be concerned. What was the "Builder" thinking. Link to comment Share on other sites More sharing options...
Vijay Posted June 4, 2021 Share Posted June 4, 2021 Is it a 4" wall or 9" party wall? (if that would make any difference to what can be chased out) I just can't imagine a builder would do that to a 4" wall and be ok with it Link to comment Share on other sites More sharing options...
Water Posted June 4, 2021 Author Share Posted June 4, 2021 59 minutes ago, Vijay said: Is it a 4" wall or 9" party wall? (if that would make any difference to what can be chased out) I just can't imagine a builder would do that to a 4" wall and be ok with it It's a standard cavity wall. Link to comment Share on other sites More sharing options...
Water Posted June 4, 2021 Author Share Posted June 4, 2021 I'm not a structural engineer but if there was only a small piece of the wall removed I wouldn't be so worried. Why oh why is it so hard to find good people. Link to comment Share on other sites More sharing options...
Water Posted June 4, 2021 Author Share Posted June 4, 2021 Anyone know if they can be safely refilled? If a concrete block was refilled with concrete would that be ok? I'm guess it is not that simple. Link to comment Share on other sites More sharing options...
JFDIY Posted June 4, 2021 Share Posted June 4, 2021 (edited) Think I'd be happier to loose 2” off the room and create a service void for that lot, or just box it in. I'd want the blocks/bricks chopping out and replacing, not just bodging in something over the face as a cosmic patch up Edited June 4, 2021 by JFDIY Link to comment Share on other sites More sharing options...
Water Posted June 4, 2021 Author Share Posted June 4, 2021 I don't mind if the strength is retained but agree losing a couple of inches isnt a problem. Link to comment Share on other sites More sharing options...
Vijay Posted June 4, 2021 Share Posted June 4, 2021 20 hours ago, Water said: Yeah that was my concern, they blocks are 100 thick but I'll have to get back down there and measure the depth. Did you get a chance to measure what's been removed/left? Link to comment Share on other sites More sharing options...
Nickfromwales Posted June 5, 2021 Share Posted June 5, 2021 17 hours ago, Vijay said: Did you get a chance to measure what's been removed/left? It’s 40mm minimum if a 32mm waste plus the thickness of the fitting has been lost. So ~60mm of brick plus ~15-20mm of cement render & plaster remains. Not going to fall down any time soon, but probably best to confirm this isn’t taking the hop of the roof or chimney etc before ‘accepting’ this compromise. Link to comment Share on other sites More sharing options...
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