B-1.1, r. 2 - Construction Code

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10.30. The ladder of a springboard, diving platform or accessory must
(a)  have rungs of a minimum length of 300 mm between the rails; and
(b)  have rungs with a non-slip surface.
The part of the ladder above a height of 1 m must be equipped with handrails that comply with paragraphs a and b of section 10.33.
O.C. 115-2013, s. 1.