laying pipe work

[paddy1]

I am about to lay new pipe work from my new boiler outside my house.
With regards the 22mm feed to and from and to the boiler, I am lagging it with 28mm insulation before laying it under ground.

Question 1 is: How deep into the ground should i lay it.

Secondly I am digging up my concrete floor where the 22mm pipe will be entering and leaving the house to the boiler.

Question 2 is: How deep should I dig up the concrete to lay this pipe.

Thirdly I am installing a new radiator which will be fed of this 22mm feed to and from the boiler. I am assuming that because this pipe will be inside the house that it does not need insulated. Is this a wise assumption.

Question 3: How deep under the concrete floor should i lay the 15mm feed to the new radiator.

thanks any one that can help.

 

[Big G]

I think you may be on the wrong forum - should you not be under plumbing?

Back to the question though, not sure of the depth but I would ensure that you use 'wrapped' pipe such as Kuterlex copper. Failing that, feed the 22mm through 28mm pipe or waste pipe. I believe that concrete is fairly aggressive when in direct contact with copper.


G