foundations and foul pipe

[tim8650]

Hello

I would be grateful if somebody could give me some information. I have just got rid of "builders" who were meant to be building an extension to my home - they made a complete mess of the underbuild which I have had to pull down as it was neither level of plumb, and they have managed to lay one of the foundations 300mm in the wrong place......
anyway, I have noticed something that is giving me real concern -

There is a main drain (clay) which runs underneath the proposed extension through my garden - on one side they have completed encased the pipe within the foundations - I thought you would have to stop the foundation either side of this and lintel of the top to conform to building regs (scotland)?

This is a nightmare because if I am right would you have to cut out the found and pipe and replace a section of the clay drain pipe? I am in the process of getting a competent builder sorted out but any info in the meantime would be helpful.

Many Thanks

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[joe-90]

I believe everything you have suggested is correct, Tim.

Why didn't Building Control specify how to avoid the drain?



joe

 

[tim8650]

Thanks joe-90

spoke to building control, the structural engineer and scottish water today and will need to cut a 25mm channel on either side of the foundation which contains the pipe and raise a lintel above by 25mm to solve the problem. Really annoyed by the cowboys who dug and poured the foundations......