Quote:
Originally Posted by Ploppalopp
God DAMN, why do they need to dig down that deep? Is that the usual depth for a building of this scale?
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Has to do with the engineering of the structure and the pressure that such a design has. Depending on the design, and how its formulated, it may require "X" amount of subterranean work and a strong foundation for it to be stable. Also the type of soil and land that its on. You can see this change based on the structure type and its location with respect to Geology. Look at Wilshire grand or Nordstrom for example.