Mich. Admin. Code R. 400.18636 - Laundry chutes
Rule 636.
(1) A
laundry chute shall be enclosed in a shaft that is constructed of an assemblage
of noncombustible materials which have not less than a 1-hour resistance to
fire. If the shaft terminates within the building, the top shall be covered
with noncombustible material that affords not less than a 1-hour resistance to
fire. There shall be no openings into the shaft other than those necessary for
the intended use of the laundry chute. An opening directly into the shaft shall
be protected by a chute door normally utilized by the industry. The spaces
between the chute and the shaft shall be filled in at each floor level with
noncombustible material. A feed door for a laundry chute shall not be installed
in any corridor or hallway that is used as a passageway to a means of egress. A
feed door shall be located in an enclosed sprinklered room or compartment that
is separated from other parts of the building by walls, a floor, and a ceiling
that have a fire-resistant rating of not less than 1 hour. Openings to the room
or compartment shall be protected by B-labeled fire doors in labeled fire door
frames.
(2) A sprinkler head shall
be installed at the top of the chute and within the laundry chute at alternate
floor levels in buildings that are more than 2 stories in height. A laundry
chute shall empty into a separate room, closet, or bin that is constructed of
materials which have not less than a 1-hour resistance to fire and shall be
protected with automatic sprinklers.
(3) If the shaft terminates through the roof
of the building, the top may have an open vent. If not equipped with an open
vent, the top of the shaft shall have a skylight. The skylight shall be glazed
with ordinary glass that is 10% of the shaft area. If the sill of the window is
not less than 2 feet above the roof level and not less than 10 feet from any
property line or other exposure on which it faces, the skylight may be provided
with a window of equivalent construction and size which is set into the side of
the shaft.
Notes
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