Mich. Admin. Code R. 408.42157 - Temporary stairways
Rule 2157.
(1)
All wooden components that are necessary to construct and guard a temporary
stairway shall be of construction-grade lumber.
(2) The minimum width of a temporary stairway
shall be 22 inches (56 cm).
(3) The
total vertical rise of a temporary stairway shall not be more than 12 feet (3.7
m), unless stair platforms are provided.
(4) The rise shall be not less than 6 inches
(15 cm) nor more than 8 inches (20 cm).
(5) The ratio of rise to tread width shall be
uniform for all sets of stairs.
(6)
The sides of a temporary stairway shall be guarded as required by
R
408.42155 and
R
408.42156, except that a stairway used as access to
material storage trailers is required to be guarded on only 1 side.
(7) If used during construction, permanent
steel or other metal stairways and landings with hollow pan-type treads that
are to be filled with concrete or other materials shall be filled to the level
of the nosing with solid material. This requirement shall not apply during the
period of actual construction of the stairways. Metal landings shall be secured
in place before filling. Such temporary treads and landings shall be replaced
when worn below the level of the top edge of the pan.
(8) A stairway shall be free of hazardous
projections, such as nails, sharp top rails, and handrail
projections.
(9) A stairway shall
have a minimum vertical clearance of 7 feet (2.1 m) from any overhead object,
unless the overhead object is padded and caution signs or paint is used on the
object, as prescribed in Construction Safety Standard Part 22. "Signals, Signs,
Tags, and Barricades," as referenced in
R
408.42110.
(10) Except during stairway construction,
foot traffic is prohibited on skeleton metal stairs where permanent treads or
landings are to be installed at a later date, unless the stairs are fitted with
secured temporary treads and landings long enough to cover the entire tread or
landing area.
(11) Treads for
temporary service shall be made of wood or other solid material and shall be
installed the full width and depth of the stair.
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.