Waste pipe under new extension.

[elv]

Hello all, i'm going to be getting my living room extended in what is now my garage, the mixed rain water and waste pipe runs under it approx 4' below the surface, what are the requirements for building over this, i do realise that the founds will have to have lintels over the pipe but someone told me that every pipe will have to be exposed and surrounded by concrete is this correct? I recall that the joints are already cemented over,I'm going to contact bouilding control but i was wondering if any of you have experience of this?

Ta in advance.

 

[masona]

i do realise that the founds will have to have lintels over the pipe but someone told me that every pipe will have to be exposed and surrounded by concrete is this correct?

Not heard of it, normally the pipe are buried in sand or pea shingles, to have it buried in concrete will do more damaged to the pipe because of soil movement.

 

[elv]

Cheers for the reply, hopefully your right, i also thought that doing as suggested would do more damage than good not to mention the extra cost.

Ta v much