[SML] Ratio of exit doors to audience?

[Jonathan Zitelman]

Bill, thanks for the added info!  I was aware of the 0.2" multiplier, but
not the minimum distinct number of exits based on the occupant load.  That
will be helpful in the future.

-J Zitelman

On Tue, Mar 5, 2024 at 1:42 PM Bill Conner via Stagecraft <
stagecraft at theatrical.net> wrote:

> 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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