Mich. Admin. Code R. 408.41105 - Definitions; S to W
Rule 1105.
(1)
"Safety feet" means a safety device that is placed on the foot of the side
rails of straight, sectional, or extension ladders to reduce the likelihood
that the base will slip. Safety feet may be flat pads that are covered with a
nonslip material, pointed metal projections, or spur wheels.
(2) "Side-step ladder" means a ladder that
requires an employee who is getting off at the top of the ladder to step
sideways from the ladder to reach the landing.
(3) "Single-cleat ladder" means a ladder that
consists of a pair of parallel side rails that are connected with cleats which
are joined to the side rails at regular intervals.
(4) "Single-rail ladder" means a portable
ladder that has rungs, cleats, or steps which are mounted on a single rail
instead of the normal 2 rails that are used on most other ladders.
(5) "Special-purpose ladder" means a portable
ladder that represents either a modification or a combination of design or
construction features in 1 or more of the general purpose types of ladders, as
defined in
R
408.41103(5) and (6),
R
408.41104(5) and (6), and subrules
(4) and (6) of this rule, in order to adapt the ladder to special or specific
uses.
(6) "Stepladder" means a
self-supporting portable ladder that is nonadjustable in length and that has
flat steps and a hinged back. A stepladder's size is measured along the front
edge of the side rails.
(7) "Steps"
means the flat crosspieces of a ladder on which a person may step to ascend or
descend.
(8) "Through ladder" means
a ladder that requires an employee who is getting off at the top of the ladder
to step through the ladder to reach the landing.
(9) "Trestle ladder" means a self-supporting
portable ladder which is nonadjustable in length and which consists of 2
sections that are hinged at the top to form equal angles with the base. The
size of the ladder is designated by the length of the side rails measured along
the front edge.
(10) "Well" means a
permanent complete enclosure around a fixed ladder that protects a climber.
Proper clearance for a well will give the same protection as a cage.
(11) "Worn" means a reduction of the
dimension of a wood or non-wood part by more than 10% of its original
size.
Notes
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