Quote:
Originally Posted by Dac150
So I just started on a new office tower that I’ve been meaning to work on over the summer and whenever I get some free time. Right now I have the footprint all mapped out as well as the skeleton for the lobby and the inner lobby columns completed. My next step is creating a core for the ‘office tower’ portion of the building. Just a couple of questions:
1. What is the standard area (ft x ft) for an office tower elevator?
2. What is the standard area (ft x ft) for an office tower stairwell?
3. How many elevators does a modern day office tower typically have?
I know some of these answers can really range across the board, but if you guys have any generic estimates I’d appreciate it.
Usually what happens is I make too many elevators that are bigger in area than they need to be, which results in large core (which means less office space).
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1. The standard elevator is about 10 x 10 feet.
2. I don't really know...
3. It depends if you have express elevators with local elevators or just single elevators. OR you could use a system like 7WTC where computers group people by the floor they are going to, resulting in greater efficency.
But if you want a bit more simplicity... The old WTC had 100 elevators per tower. About 1/3 of them were express elevators (taking up about 30 shafts at the bottom, about 3000 square feet plus walking room, so it's more like 6000 I'd imagine...).
Then there were about 60 left over elevators for 3 sections of the towers (lower, middle, top, each served by their own exclusive local evevators) which gives about 20 per section.
The problem with elevators is that there is no formula for the needed number of elevators. So use the above knowledge as a guideline.
And if you haven't already, read about express elevators, OTIS systems, and think logically about the # of workers.
I'll bet none of that helped.