WAC 296-24-23507
Footwalks and ladders. (1) Location of
footwalks.
(a) If sufficient headroom is available on cab-operated
cranes, a footwalk shall be provided on the drive side along
the entire length of the bridge of all cranes having the
trolley running on the top of the girders. To give sufficient
access to the opposite side of the trolley, there should be
provided either a footwalk mounted on the trolley, a suitable
footwalk or platform in the building, or a footwalk on the
opposite side of the crane at least twice the length of the
trolley.
(b) Footwalks should be located to give a headroom not
less than 78 inches. In no case shall less than 48 inches be
provided. If 48 inches of headroom cannot be provided,
footwalks should be omitted from the crane and a stationary
platform or landing stage built for workers making repairs.
(2) Construction of footwalks.
(a) Footwalks shall be of rigid construction and designed
to sustain a distributed load of at least 50 pounds per square
foot.
(b) Footwalks shall have a walking surface of antislip
type.
Note:
Wood will meet this requirement.
(c) Footwalks should be continuous and permanently
secured.
(d) Footwalks should have a clear passageway at least 18
inches wide except opposite the bridge motor, where they
should be not less than 15 inches. The inner edge shall
extend at least to the line of the outside edge of the lower
cover plate or flange of the girder.
(3) Toeboards and handrails for footwalks. Toeboards and
handrails shall be in compliance with WAC 296-24-750 through296-24-75011
and WAC 296-800-260.
(4) Ladders and stairways.
(a) Gantry cranes shall be provided with ladders or
stairways extending from the ground to the footwalk or cab
platform.
(b) Stairways shall be equipped with rigid and
substantial metal handrails. Walking surfaces shall be of an
antislip type.
(c) Ladders shall be permanently and securely fastened in
place and shall be constructed in compliance with chapter 296-876 WAC, Ladders, portable and fixed.