Vestibule Requirement

[VLADIMIR LEVIN]

I'm doing a dentist office build-out The entire space is >3000 sf which requires a vestibule.
I'm trying not to do a vestibule. There is a place in the plan where if I put a door in a hallway if would divide the entire space in 1/2.
See attached plan
Would this be within the intent of the code?

 

[steveray]

If it is not 3000ft "wide open" you don't need a vestibule....Your plan with the red line looks compliant to me...

 

[walker.t]

Would this be within the intent of the code?

There’s some additional commentary in this thread you might find useful:

Thread 'Vestibule not Required in SPACE Less Than 3000 Square Feet'

Apr 11, 2016

Quoting from the 2015 IECC about vestibules:

"C402.5.7 Vestibules. Building entrances shall be protected

with an enclosed vestibule, with all doors opening into and out

of the vestibule equipped with self-closing devices. Vestibules

shall be designed so that in passing through the vestibule

it is not necessary for the interior and exterior doors to

open at the same time. The installation of one or more

revolving doors in the building entrance shall not eliminate

the requirement that a vestibule be...

• nitramnaed
• Replies: 8
• Forum: Commercial Energy Codes

 

[RLGA]

Your question threw me a curve because you posted it under "Commercial Building Codes" instead of under "Commercial Energy Codes," and I thought, "There are no requirements in the IBC regarding vestibules based on space size." Because I work primarily in Climate Zone 2, I never thought about the energy code.