B21 wrote: ↑Sun Jul 17, 2022 9:53 pm
Mr Tidy wrote: ↑Sun Jul 17, 2022 9:30 pm
Good to see you managed to hire a dump truck in the right colour.
Good luck with your building project.
Thank you …a 7m by 4m 200mm thick on steel mesh concrete pad should be a good start,,,big French drain and Gabions (if that’s a John E89 approved expression) to hold the cut out dirt walls..
Pondering as to what types of car lift..short height poles or scissor lift aka John E-89
Are you building any masonry walls off of the slab? If so you will need a perimeter thickening to allow the concrete to span over any soft-spots.
You would also want to use something like an A252 mesh in the TOP
of the 200thk slab, treaded in to some 35mm depth to both enable you to span over any soft spots but also to control shrinkage cracking as you're going past 6m in length and probably want to avoid a 'crack-inducer'.
While you're placing your reinforcement, if you know where the feet of your lift are going, it might be sensible to add a small patch of A252 in the bottom of the mesh (say 50mm above the blinding) to further control local cracking.
A french drain around the perimeter would be sensible (just behind your gabion baskets would be perfect). Just ensure that you have a decent foundation for the gabions as they have a tendency to lean over time unless you intend to install them at an angle.
If you have any questions just give me a shout.