Originally Posted by CGY
I'm hoping someone with more knowledge in this area than I can help me out here... If construction (as opposed to simply demolition) is supposed to be starting soon, why did they fill in the hole from the parking garage at this site?
The drill rigs need a level, stable site to work from otherwise they tip over with the best of cows. Also the caisson walls preventing the site from collapsing in on itself during excavation are most effective from street level and not one storey down.