R 408.10603
R 408.10603 Definitions; B to F.
Cite as Mich. Admin. Code R 408.10603
Rule 603. (1) "Breakaway door" means a door that is designed to slide in normal
operation and which will swing open in any position when a maximum pressure of 50
pounds is applied to the latch side of the door in an emergency.
(2) "Draw bolt" means a metal bar or rod in the mechanism of a lock that is thrown
or withdrawn by turning the key or retracting a lever.
(3) “Electroluminescent” means a light-emitting capacitor. Alternating current
excites phosphor atoms when placed between the electrically conductive surfaces to
produce light. This light source is typically contained inside the device.
(4) "Fire area of a building" means that space contained within component structural
parts that has a fire resistance sufficient to prevent the further spread of fire that
originates therein.
(5) "Fire door" means a fire-resistive door assembly, including the frame and
hardware.
(6) "Fire resistance" means the property of a material or assembly to withstand fire
or give protection from it.
(7) "Flammable" means subject to easy ignition and rapid flaming combustion.
(8) "Floor area" or "gross area" means the floor area within the perimeter of the
outside walls of a building, with no deductions for any of the following:
(a) Hallways.
(b) Stairs.
(c) Closets.
(d) Thickness of walls.
(e) Columns.
(f) Other features.
(9) "Flush bolt" means a door bolt that is designed so that when applied it is flush
with the face or edge of the door.