Dear Sirs,
I wish to schedule 5 basement slabs each 260mm deep and 72m by 36m rectangular. These will be installed using the top down excavation method through two excavation locations, one at each end of the 72m long side.
The ground floor will be installed first. Then there with be some excavation 8m to the -1 basement floor and then to each floor in turn -2, -3 -4 making the 5th slab.
The box is produced using a 36m diaphragm wall with deep punch piles installed from the ground level prior to forming the ground floor slab.
Would anyone be able to provide a planning schedule for the slab formation times and the activities. The concrete will be brought onto site as premix with a concrete pump. Guidance on the productivity rates and the extent of each excavated area to form the on grade sections making up each basement floor will be appreciated.
Thank you
Best regards
Chris Eaglen London UK