this should help to explain it

Everyone will take a shower before entering the building ;)

They will lay a bed of aggregate and compact it this will serve as platform for the crane and the caisson drill to move on. due to their size and wight the equipment will sink and possibly topple if they are on native soil.

This would be the underside of the ramp going up. At the lowest floor the ramp is founded on soil. it is mainly because the space under the ramp is useless and the construction of a suspended slab is difficult in the tight space. after the ramp goes up by about 7 feet above the finished grade...

They are in-slab ducts. They are used as alternative to running ducts under the ceiling slab and make for less crowded ceilings (less bulkheads) in units.

http://www.silverview.ca/Documents/Newtonbrook.pdf