That is a good analogy of use. I can see that as a multi tiered building with mezzanines at intermediate levels. Still the mezzanine levels are inside the building from floor to ceiling within that building. My problem is they are trying to have a one story building addition (the mezzanine piece) attached to the remaining warehouse, using the aggregate floor area of the warehouse to extract a 1/3 ratio for the mezzanine(s) in this case a three story building equally divided. The first floor area of the warehouse communicates atmospherically with the addition (mezzanine) at the first floor and someone was smart enough, I believe, to put basically an atrium of sorts (I would call it floor openings as an example escalator openings from one level to the next) so that the other two levels communicate atmospherically as well. On that, I had plenty of comments concerning the mechanical systems, but that is another problem.
Anyway need to think more on this. I may be approaching this from the wrong angle, in that considering the most restrictive requirements for the use, which could include separating areas (fire areas) rated assembly between and so on.
I have an unlimited area building F1, S1, B existing 100,000. sq. ft.
proposed mezzanine addition 33,000 sq. ft. 3 levels, 1st & 2nd business ( B), 3rd (A2) is totality a commercial kitchen for employees, cafeteria, dining lounge with computer lounge and ping pong table to boot and an outdoor patio, nice setup for a 3rd level mezzanine inside of a 3 story addition.
All of this attached to the warehouse, with out exceeding the height and area for a IIB construction fully sprinklered building.
I am missing a point of view backed up code, that is my dilemma, hence reaching out for advice.
Unfortunately, many other projects that need equally undivided attention as well, time sensitive. I guess I'll save this one for bar talk gossip at the next code update training
Thanks