1010.1.9.3 Locks and latches.
BC § 1010.1.9.3
Locks and latches shall be permitted to prevent operation of doors where any of the following exist: 1. Places of detention or restraint.
2.Places where extra safeguards are required such as banks, museums, and jewelry stores subject to the approval of the commissioner and provided the locks are equipped with electrical release devices for remote control in case of emergencies. However, museums shall be subject to further special review by the commissioner and Fire Commissioner.
3.Main entrances in Occupancy Groups B, M, and S as permitted by Section 1010.1.4.4.
4.Doors from individual dwelling or sleeping units of Group R occupancies having an occupant load of 10 or less are permitted to be equipped with a night latch, dead bolt or security chain, provided such devices are openable from the inside without the use of a key or tool.
5.Doors serving R-2 occupancies as required by Section 1010.4.
6.In educational occupancies classified in Occupancy Group B or E, and college or student dormitories in Group R-1, stairways leading from the top floor to a roof may be provided with locked wire mesh gates openable by key.
7.On roofs that are not intended to be accessed by occupants other than building maintenance personnel, the use of a hook and eye closing device or other similar non-self-locking devices on the stairway side of all doors openable without the use of a key or special knowledge to roofs shall be permitted.
8.Fire doors after the minimum elevated temperature has disabled the unlatching mechanism in accordance with listed fire door test procedures.
