34 Pa. Code § 43.18 - Stairways and ladders
(a) In each
shaft, except during the period of sinking, there shall be a covered stairway
at least 2 1/2 feet wide leading from the bottom of the shaft to the surface.
However, in case it is not practicable to construct a stairway, a ladder shall
be installed with landings at every 20 feet of sufficient width to permit men
to pass. Stairways and ladders shall be kept clear and in good condition at all
times. The distance between the centers of the rungs of a ladder shall be 12
inches. Any ladder having a variation in its step or rung spacing of 1/2 inch
or more shall be rebuilt to meet the requirements of this chapter. The length
of the ladder rungs, that is, the width of the ladder on the inside of the
stringers, shall be at least 12 inches. The rungs of a ladder shall be at least
6 1/2 inches from the wall or other obstruction in the shaft or opening in
which the ladder shall be used. Under no circumstances shall any ladder
inclining backward from the vertical be installed.
(b) At all landings where it is necessary to
cross from one side of the shaft to the other, passageways shall be provided
and shall be kept free from all obstructions and properly lighted.
(c) Ladderways and stairways in daily use
shall be kept clean.
Notes
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