NYC Building code https://up.codes/viewer/new_york_city/nyc-building-code-2014/chapter/10/means-of-egress#1008 https://up.codes/viewer/new_york_city/nyc-buildin

NYC Building code https://up.codes/viewer/new_york_city/nyc-building-code-2014/chapter/10/means-of-egress#1008 https://up.codes/viewer/new_york_city/nyc-building-code-2014... > Turnstiles or similar devices that restrict travel to one direction shall not be placed so as to obstruct any required means of egress. There are some exceptions. The type of turnstile pictured may be used for up to 50% of the required egress capacity, and must fail open (for egress) in event of power loss, as well as offer a manual override to allow for free egress. This style of turnstile can also not be counted for egress requirements when placed in an "accessible route". Additionally, > Where serving an occupant load greater than 300, each manually-operated turnstile and automatic turnstile that is not portable shall have a side-hinged swinging door which conforms to Section 1008.1 within 50 feet (15 240 mm).