Quote:
Originally Posted by williamchung taiwan
They excavate the site first and dig a couple of holes on it. One of these holes is use to remove underground water. And then they put the continous retaining wall in remain two hole and pour concrete into. I think underground foundation is in process and we can not see from the surface.
(Continous retaining wall is about 50m deep....)
For information, I think we need to ask engineer....
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i dont see how you can build a foundation without building a hole from the surface. usually you just dig a big hole and pour concrete for the retaining walls and floors and then put in the pillars for the structure, etc. like at world trade center new york city:
(look how big and deep this hole is)
