(a) Be constructed and used as prescribed in subrule (1)(a), (d), (e), (f), (g), (h), and
(i) of this rule.
(b) Consist of three 2-inch by 10-inch nominal size planks placed side by side or
other material of equal width that provides equivalent strength.
(3) A ramp or runway used by concrete buggies, forklift trucks, or other motorized
material handling equipment shall comply with all of the following provisions:
(a) Be capable of supporting not less than 4 times the maximum intended load.
(b) Be not less than 5 feet (1.5 m) wide.
(c) Be constructed and used as prescribed in subrule (1)(a), (d), (f), (g), (h), and (i)
of this rule.
(4) A ramp or runway constructed of 2 or more planks placed side by side shall have
the planks securely fastened together.
History: 1982 AACS; 1989 AACS; 2016 AACS; 2021 MR 6, Eff. Mar 29, 2021.
R 408.42155 Specifications for stair rail.
Rule 2155. (1) A stair railing shall consist of a stair rail, a vertical support, and an
intermediate rail or its equivalent to prevent an employee from falling through the
opening between the stair rail and the stairs. The stair rail shall parallel the slope of the
stairway.
(2) A stair rail shall be smooth, made of 2- by 4-inch nominal-sized lumber, and
constructed in a manner to withstand a side thrust of not less than 200 pounds. The height
of a stair rail shall be as follows:
(a) A stair rail that is installed after March 15, 1991, shall be not less than 36 inches
(91.5 cm) from the upper surface of the stair rail system to the surface of the tread and in
line with the face of the riser at the forward edge of the tread.
(b) A stair rail that is installed before March 15, 1991, shall be not less than 30
inches (76 cm) nor more than 34 inches (86 cm) from the upper surface of the stair rail
system to the surface of the tread and in line with the face of the riser at the forward edge
of the tread.
(3) The vertical post shall be constructed of not less than 2- by 4-inch nominal-sized
lumber and shall be spaced not more than 6 feet (1.8 m) apart.
(4) An intermediate rail or midrail shall be constructed of not less than 1- by 6-inch
or 2- by 4-inch nominal-sized lumber and shall be installed midway between the stair rail
and the treads.
(5) Screens, mesh, intermediate vertical members, or equivalent intermediate
structural members shall be provided between the top rail of the stair rail system and the
stairway steps.
(6) Screens or mesh, when used, shall extend from the top rail to the stairway step
and along the entire opening between the top rail supports.
(7) When intermediate vertical members, such as balusters, are used between posts,
they shall be not more than 19 inches (48 cm) apart.
(8) Other structural members, when used, shall be installed such that there are no
openings in the stair rail system that are more than 19 inches (48 cm) wide.
(9) A stair rail shall not have protruding nails or rough or sharp corners and shall not
constitute a projection hazard.
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