MrD10de

Thanks J, that doesn't directly answer my question but obviously bears considering. The two main points of understanding that I'm struggling with are the following: Occupant Density Factor Do different art forms (dance, music, theatre etc) have different ODF's associated with them? If yes, do I need to figure out occupancy limits for each of them and take the smallest, or is a general use calculation sufficient? Do I calculate the stage area separately from the auditorium, or are they considered one room? Is this affected by having either a flat floor or raised stage? Is there any distinction between an adult and a child in terms of what counts as an "occupant"? Exit Capacity When determining alternative exits, where should you measure the 45 degree angle from? Perhaps I'm being needlessly dumb, but surely every exit is potentially within 45 degrees of another depending on where you are in the room.

I've recently taken over the management of the tech department at my venue, and I'm looking to update our tech spec to include things like room occupancy limits - specifically for our stage area so we can definitively say yes or no when, for example, a community group asks if they can put 200 kids on stage at once. Does anyone have any insight on how to calculate such things? I've used this calculator to get a number that sounds sane, though I'd like to understand the working behind it so I can verify it. I've found this PDF helpful, but I confess that some of it's gone over my head and I'm unsure which room occupancy factor I should be using (as the guidance offered is focused on audience rather than performance).