[SML] Ratio of exit doors to audience?

[Bill Conner]

At a minimum, .2" of clear width per occupant.  So let's say you have 36"
doors, which are around 34" clear when open 90 degrees - that's 170 people.

There is no guarantee that an authority will allow any doors to be
blocked.  Designing flexible theatres it's hard to get that sign off.  But
maybe try to provide 150 to 200% of the minimum and see if you can get that
approved.

Also up to 500 occupants - minimum 2 separate ways out.  500-1000 - 3.
Over 1000 - 4.

There's also travel distance and common path of egress travel but
probably not a concern.



On Tue, Mar 5, 2024 at 2:24 PM Stephen Lee via Stagecraft <
stagecraft at theatrical.net> wrote:

> I seem to remember reading about the calculations for determining how
> many useable emergency exit doors are required for a space, based upon
> how many people will be in the room. The situation I'm envisioning would
> be for a corporate gig in a hotel/convention center ballroom where some
> of the doors around the perimeter (backstage, for example) would be
> blocked by scenery or pipe & drape for an event, but the room would not
> be fully populated with seats, either.
>
> Unfortunately my brain and Google-fu are both failing me at the moment.
> Does anyone know the rule-of-thumb for this?
>
> Stephen
>
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-- 
Bill Conner Fellow of the ASTC
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