(1)
Except as provided in Sentence (3), a guard not less than 1 070 mm high shall be provided
(a)
around floor openings, where provision of a cover in accordance with Sentence 2.2.6.9.(1) is not practical, and
(b)
at locations where the difference in elevation between two adjacent surfaces is more than 600 mm.
(2)
The guard required by Sentence (1) shall consist of
(a)
a top railing,
(b)
an intermediate rail located at the mid-height of the guard, and
(c)
where tools or other objects could fall from an upper floor surface onto a person on an adjacent lower surface, a toe board extending not less than 125 mm above the upper floor surface.
(3)
Sentence (1) does not apply
(a)
to vehicle repair pits,
(b)
to loading docks, or
(c)
where access is provided for maintenance purposes only.