we have a client who wants to put a window in a wall, that has almost zero setback from a property line, common to the adjacent property. the building is a type V-A, with a Group A-3 Occupancy (gym).
we told him no, not permitted. but he's a very persistent man and not very good at being told 'no'. he thinks if he provides a two-hour rated fixed window, with 1/2" glazing, that because it exceeds the rating of the wall, it should be acceptable.
before i tell him no again, i thought i'd toss it out to the group here, in case there is a way to make this work.
another option could be glass block. if we used glass block, rated to match the wall, would it no longer be considered a wall opening, but part of the wall itself? nothing says the wall needs to be the same material for it's distance.
as always, appreciate any ideas and feedback.