Running 22mm plastic pipe through floor slab

[John Williamson]

I'm in the process of converting an old bathroom into a bedroom and the heating pipes will need to be moved.

The heating pipes have all been done using Buteline PB and I will need to run a length through a floor slab.

Current plan is to use JD Speedfit 22mm conduit within a chase in the floor and cover with a concrete repair mortar. Joints will all be made outside of the room so the pipe could be re-pulled if needed.

Questions are:

Will the conduit be sufficient to account for expansion of the pipes and prevent the concrete from cracking?
What depth should the concrete be buried in the slab?
Does this sound like a stupid idea in the first place?

 

[Madrab]

Never used the JG conduit but I believe it is constructed to accommodate expansion.

You would want to insulate too to avoid heat leaching into the slab. Depth will be determined by the thickness of the slab and location of the channel and whether it would need to resist foot traffic.