Mich. Admin. Code R. 400.18602
Rule 602. As used in this part:
"Approved" means acceptable to the state fire marshal.
"Automatic fire detection system" means at least a local system incorporating labeled underwriters laboratories, incorporated, control units, with audible signal devices, thermostats, and associated instruments and devices listed by underwriters laboratories, incorporated, in its fire protection equipment list, and installed in accordance with the national fire protection association pamphlets nos. 72A, 72B, and 72D, 1972 edition, proprietary, auxiliary, and local protective signaling systems which are adopted by reference in R 400.18659.
"Automatic sprinkler system" means a sprinkler system that is installed in accordance with the provisions of national fire protection association pamphlet no. 13, 1972 edition, sprinkler systems, which is adopted by reference in R 400.18659.
"Authority having jurisdiction" means the Michigan department of state police, fire marshal division.
"Basement" means that portion of a building which is below grade, but which is so located that the vertical distance from the grade to the floor is not more than the vertical distance from the grade to the ceiling; except that where the ceiling of such portion of a building is located 5 feet or more above grade for more than 25% of the perimeter measurement of the building or part of the building affected, it shall be classed as a first story.
"Building" means a congregate facility occupied by residents.
"Cellar" means that portion of a building which is partly below grade, but which is so located that the vertical distance from the grade to the floor is greater than the vertical distance from the grade to the ceiling.
"Combustible" means the opposite of noncombustible.
"Department" means the Michigan department of state police, fire marshal division.
"Director" means the state fire marshal.
"Existing" means a facility constructed and licensed before February 1, 1975.
"Exit" means a way of departure from the interior of a building or structure to a street or to an open space that provides safe access to a street. An exit may comprise vertical and horizontal means of travel, such as doorways, stairways, ramps, corridors, passageways, and fire escapes, including all of the elements that are necessary for an emergency escape from the building or structure. An exit begins at a doorway or other point of access to an exit from which occupants may proceed to the exterior of the building or structure with reasonable safety.
"Fire alarm system" means, at a minimum, a local system that incorporates control units, audible signal devices, thermostats, and associated instruments and devices listed by underwriters laboratories, incorporated, in its fire protection equipment list, and installed in accordance with the 1972 edition of the national fire protection association pamphlet nos. 72A, 72B, and 72D, proprietary, auxiliary, and local protective signaling systems, which are adopted by reference in R 400.18659.
"Fire doors" means doors constructed in accordance with the 1970 edition of the national fire protection association pamphlet no. 80 entitled, standard for the installation of fire doors and windows, which is adopted by reference in R 400.18659 and labeled in accordance with the listing of underwriters laboratories, incorporated.
"Fire resistant construction" means a building that has all walls, ceilings, floors, partitions, and the roof made of noncombustible materials, such as stone, brick, tile, concrete, gypsum, steel, or similar noncombustible materials. Structural members shall be of such assembly or be protected by material that will afford a fire-resistance rating of 1 hour or more.
"Fire resistance rating" means materials or an assembly of materials that shall afford a rating as prescribed in the 1964 edition, as amended, of the fire resistance rating pamphlet published by the national board of fire underwriters or as prescribed in the listings of underwriters laboratories, incorporated, building materials list.
"Flameproof" or "flameproofing" means materials that do not readily ignite or propagate flame under test conditions. Flameproofed materials usually are combustible materials that have been treated or coated to modify their burning properties.
"Inspecting authority" means the state fire marshal.
"New" means an existing facility licensed and constructed between February 1, 1975, and the effective date of these rules. It also includes any addition and remodeling to a building after February 1, 1975, and the effective date of these rules.
"Noncombustible" means any of the following:
(a) A material that will not ignite and burn when subjected to fire. A material that liberates flammable gas when heated to a temperature of 1,380 degrees Fahrenheit for 5 minutes is not considered noncombustible.
(b) A material which has a structural base of noncombustible material as defined in subdivision (a) of this rule and which has a surfacing that is not more than 1/8-inch thick and that has a flame spread rating of not more than 50 in compliance with the provisions of R 400.18639.
(c) A material, other than a material described in subdivision (a) or (b) of this rule, which has a surface flame spread rating of not more than 25 in compliance with the provisions of R 400.18639 without evidence of continued progressive combustion and which is of such composition that surfaces that would be exposed by cutting through the material in any way would not have a flame spread rating of more than 25 without evidence of continued progressive combustion.
"Panic hardware" means hardware that is listed as panic hardware in the accident, automotive, and burglary protection equipment lists, 1972, of underwriters laboratories, incorporated, adopted by reference in R 400.18659.
"Plenum" means an air compartment or chamber to which 1 or more ducts are connected and which forms part of an air distribution system.
"Protected ordinary construction" means a type of construction in which exterior bearing walls are made of masonry, roofs and interior framing are made of wood or other combustible material that is protected so as to afford at least a 1-hour-fire resistance rating, and the ceilings are attached unfurred directly to the underside of the roof joists without an attic or open space above the ceiling joists.
"Story" means that part of a building between a floor and the floor or roof next above. The first story shall be the lowest story of a building, the ceiling of which is located 5 feet or more above grade for more than 25% of the perimeter measurement of that story. Other stories shall be referred to by numerical designations in their order above the first story.
"Wired glass" means glass which is not less than 1/4-inch thick, which is reinforced with wire mesh, no. 24 gauge or heavier, and which has openings that are not larger than 1 inch square.
Mich. Admin. Code R. 400.18602