Related but diverse terminology. Bottom line, my question is can we make use of only one unenclosed exit from your mezzanine? Provided that the OP indicated this location is three,088sf and that other portions already have elevators, what exception towards the essential obtainable route do you believe they qualify for? https://eduardokoomk.eedblog.com/38607069/helping-the-others-realize-the-advantages-of-mezzanine-barriers