Which of the following do rolling steel fire doors and horizontal sliding fire doors have in common as related to the means of egress?
A. They cannot be used in openings that are part of the means of egress.
B. They are required to have swinging doors located within 50 feet (15 m).
C. They must be operated by gravity and be triggered by smoke alarms.
D. They may only be used in industrial applications with fire-resistive ratings
Ans: A. They cannot be used in openings that are part of the means of egress.
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