Doors in exterior walls allow people to enter and leave a building, but they also introduce security challenges, says Ron Cote, NFPA's principal engineer for life safety. Building operators try to provide systems and procedures to limit admission to those who legitimately belong in the building without unreasonably inconveniencing them.
To do this, they may introduce systems that control entry, such as turnstiles. However, these systems must not adversely affect the safe egress of building occupants, as required by NFPA 101®, Life Safety Code®, which regulates egress in significant ways but does not require ingress. According to Cote, the 2015 edition of NFPA 101, available this fall, will now include provisions for security access turnstiles positioned in building lobbies to prevent unauthorized access.
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