Top Down Basement Construction
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Andrew
I notice in another post that you say the basement is 8m deep with lowest 1m below the water table , but in this post its 50% below water i.e. 4m. ?? makes a huge difference to viable solutions.
with 4m of water and even with 1m a key problem will be heave and even boiling of the base of the excavation. Also once the base slab is in place uplift on the basement will be a major design problem.
To down for basements has tremendous programme advantages because once the groun level floor is in place and the piled foundations to the superstructure are in place then you can simmultaineously build the basement and the superstructure.
JK
Have you had a look at soil improvements. (Vibro Displacement)
Cheers
Andrew,
Given that you have to excavate the basement any way i wonder if the pile arrisings will add significantly to the total excavated volume.
please explain "plunge piles".
you could , if the ground is ok, use permanant sheet piles at the perimeter and or a balanced box design with props to reduce the piling depths.
JK