Waste pipe through raft foundation

[noseall]

2.1m deep. LOL

2.4m deep lol, with 1.5m of made up ground to get through and a mass filled conservatory footing to hoof out/cut through in the process.

Deeptrench2

• noseall
• 11 Sep 2016

Deeptrench1

• noseall
• 11 Sep 2016

made up ground can be stable enough to cut trenches without the sides collapsing......

Correct, but at that depth it requires a minimum 3 tonner and that's on max dig with the machine right on the edge of the trench.

It was not an enjoyable dig. At one stage I was perched atop of the old existing foundations with a heavy electric Hilti breaker in hand, trying to cut through the concrete whilst stopping myself being dragged by the weight of the Hilti, into a 2.4m drop below.

 

[IamHarris]

Sorting that doesn’t sound as if it would be rocket science to sort out though, I guess I need to convince the Building inspector.