Mich. Admin. Code R. 400.10551 - Smoke barriers
Rule 551.
(1)
Smoke barriers with a 1-hour-fire-resistance rating shall be provided on each
floor that is used for sleeping rooms for more than 24 residents and shall be
located so as to form an area of refuge on either side that is served with an
approved means of egress. The barriers shall be located as close as possible to
the middle of the floor to be protected and shall extend from outside wall to
outside wall and from the floor through any interstitial spaces to the roof or
floor structure above.
(2) Doors in
the smoke barrier shall be at least C-labeled fire doors that are hung in
labeled frames with self-closing devices. Where double doors without mullions
are used, synchronizing hardware and astragals shall be installed.
(3) Doors in smoke barrier partitions may be
held open only by electric hold-open devices which are designed so that
interruption of the electric current or actuation of the fire alarm, sprinkler
system, or the heat or smoke detector will cause the release of the doors. The
doors shall also be capable of being manually opened and closed.
Notes
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
No prior version found.