Copper pipes in screed - gas and water

[bernardgreen]

Are there rules ( or maybe it is just accepted good practise ) that cold water pipes supplying dinking water should be kept away from hot pipes to prevent the drinking water becoming warm and thus permitting / promoting the growth of bacteria.

 

[denso13]

OP can always wrap them in Denso tape, eh @denso13

Yes, it's where my name came from, in a round about way

 

[AGAS]

Generally for compressive loads when filling small areas above pipes a weak mix of 1:8 with soft sand is adequate.

1 in 8 that will crack like fook

 

[dilalio]

Yes, it's where my name came from, in a round about way

Now I am curious... Pray tell

 

[denso13]

Now I am curious... Pray tell

Lets just say - City and Guilds plumbing class long time ago, bunch of 16 year olds, choice between wiping lead joints or playing with other stuff............

 

[dilalio]

I would not consider working with Denso Tape "playing"! I hate the bloody stuff - I always ask an unsuspecting labourer to lag my pipes with it

 

[Steelmasons]

I would not consider working with Denso Tape "playing"! I hate the bloody stuff - I always ask an unsuspecting labourer to lag my pipes with it

I hope the 'unsuspecting labourer' wraps the pipework in the correct manor when applying the 'petroleum based hessian'.. ..50/50 overlap , me thinks he doesn't..

 

[dilalio]

I hope the 'unsuspecting labourer' wraps the pipework in the correct manor when applying the 'petroleum based hessian'.. ..50/50 overlap , me thinks he doesn't..

On the rare occasions I've had to use it, I couldn't give a f|_|€k

What Manor would that be? I'd be hoping it was on my job, not the one in the next stately home

 

[Mikefromlondon]

A picture speaks a thousand words. Make your own judgement. This was probably 20+ years old and started leaking last week. Note the leak was caused by corrosion and not by a puncture from things like a nail etc.

 

[Steelmasons]

On the rare occasions I've had to use it, I couldn't give a f|_|€k

What Manor would that be? I'd be hoping it was on my job, not the one in the next stately home

Couldn't give a fook says it all really..
Wrapping steel gas pipe requires the correct precedure otherwise it'll rot in no time..

 

[dilalio]

steel! gas pipe! Never done it. Never will!

 

[gasbanni]

Gas pipe buried in concrete has to be factory sheathed now, you can't use denso anymore that change came in years back .......concrete doesn't affect copper when it's in concrete really ?.....It bloody well does seen it loads of times.

As for the original post the installer should have used factory sheathed pipe.

 

[Steelmasons]

Gasbani you're talking shyte.

 

[a_seth]

Thanks for all the replies everyone mikefromlondon's post is what I'm worried about. The pipes around it look ok though so not really sure what to make of it. I'm still putting off actually fixing this hole but the other half is getting a bit restless now! Thinking of wrapping in duct tape, then putting felt over and duct tape on that too. Should be pretty solid (can't fit actual insulation around it). It's got to have a fridge on it and people walking over it too so I'm thinking a 1:4 mix?

 

[dilalio]

Duct tape. Felt lagging. 1:4-1:6. Get it done and forget about it.