Subsection 1008.3 - Turnstiles Turnstiles or similar devices that restrict travel to one direction shall not be placed so as to obstruct any required means of egress.
Exception: Each turnstile or similar device shall be credited with no more than a 50-person capacity where all of the following provisions are met:
1. Each device shall turn free in the direction of egress travel when primary power is lost, and upon the manual release by an employee in the area.2. Such devices are not given credit for more than 50 percent of the required egress capacity.3. Each device is not more than 39 inches (991 mm) high.4. Each device has at least 161/2 inches (419 mm) clear width at and below a height of 39 inches (991 mm) and at least 22 inches (559 mm) clear width at heights above 39 inches (991 mm). Where located as part of an accessible route, turnstiles shall have at least 36 inches (914 mm) clear at and below a height of 34 inches (864 mm), at least 32 inches (813 mm) clear width between 34 inches (864 mm) and 80 inches (2032 mm) and shall consist of a mechanism other than a revolving device.
1008.3.1High turnstile. Turnstiles more than 39 inches (991 mm) high shall meet the requirements for revolving doors.1008.3.2 Additional door. Where serving an occupant load greater than 300, each turnstile that is not portable shall have a side-hinged swinging door which conforms to Section 1008.1 within 50 feet (15 240 mm).