[SML] Ratio of exit doors to audience?

[Bill Conner]

There is a lot more to consider. I've cranked up my code work since
retiring and am in the code books constantly, so ask away.

On Tue, Mar 5, 2024, 3:48 PM Jonathan Zitelman via Stagecraft <
stagecraft at theatrical.net> wrote:

> 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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