pressbrake1
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My guess of over £100k was right then.Some progress.
Structural Engineer came out. He had poured the original pads so had some background knowledge that proved helpful.
So, 400+ tons of Concrete and maybe 12 tons of steel reinforcement. It needs a 1.5 extension beyond the 'legs' to get a wall up and still leave a metre to slide the jacks round. To get jacks down requires about 20 metres of ramp. Ooops....had forgotten about that. Finally tally was about £125,000.
Plan B is now to rent a concrete pad outside, remove the old concrete, dig down, French drains, new pad, steel pillars rescued from a condemned old building nearby, roof and clad with new. Cost closer to £75,000 and we'd be left with a decent building afterwards with no disruption inside our own shell.
Management meeting on Monday to look over my 'options'.
I based that on a groundwork firm quoting me £10000 for a 6m x 7m slab 500mm thick
Did it myself for about £3000