We began construction on our first high-rise remodel a month ago and we are now starting framing and electrical work. Construction techniques differ in a high-rise than working on typical residential work. It is much more like a commercial project. All the framing is done with steel studs instead of wood, and the ceiling is suspended above from the major structural elements.
The photos above and below show how we had to redo most of ceiling framing in order to fit our ceiling lights. We will also need to relocate some of the fire suppression sprinkler heads to align with our lighting plan.