Each turnstile must be credited with a capacity based on a max occupant load of 50 persons when which of the following provisions is met?

The correct answer indicates that all of the listed provisions contribute to the decision to credit each turnstile with a capacity based on a maximum occupant load of 50 persons.

When each turnstile is a maximum of 39 inches high, it allows for greater accessibility and compliance with codes that ensure safety and ease of use. This height can also facilitate faster egress in an emergency by allowing more individuals to exit simultaneously.

The stipulation that devices are not credited for more than 50% of the egress capacity means that their contribution to the total exit width must take into account the necessity for other exits in the facility to accommodate the full occupant load. This provision helps prevent congestion at exit points during an evacuation, ensuring that the total capacity of egress measures aligns accurately with safety standards.

Additionally, having each device turn freely in the direction of egress travel when primary power is lost is crucial for ensuring that in an emergency, when power might fail, individuals can still exit without hindrance. This provision assures that the safety of occupants is maintained even under adverse conditions.

Overall, each of these provisions is integral to ensuring the turnstiles can be credited effectively and safely accommodate the required occupant load during an emergency evacuation scenario. This holistic approach to assessing