Laying strip foundation across wastewater drainage

Postby westcork » Tue Apr 13, 2010 7:30 am

Hello to all. I'd appreciate any advice regarding this query.

I have planning permission for a large single storey room (utility room) to the rear of our house. My question is this: how do I lay strip foundations across the path of an existing wastewater drainage system (which comes from a bathroom). I don't want to reroute the drainage, but how can I lay foundations (deeper than the drainage) in this particular instance?

As I say, any advice would be much appreciated.

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Joined: Sat Feb 06, 2010 12:47 pm


Simply Build It

Postby stoneyboy » Thu Apr 15, 2010 10:26 pm

You'll probably have to encase the drain in concrete and build in a lintol over the drain. Talk to your Building Inspector when he comes to check the footings.
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Postby westcork » Sun Apr 18, 2010 6:02 am

Many thanks for this. Yes, I think you're right. I've had some conversation with a builder since posting, and he reckons I can route it around the proposed extension, or across it's path, but certainly along the lines you suggest.

An engineer's opinion has also been suggested as we live in very rocky ground (not exactly sure why, though it'll no doubt become clear as things progress).

Thanks again for taking time to reply.
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Joined: Sat Feb 06, 2010 12:47 pm

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