PART XI SCAFFOLDS, STAGES AND WORK PLATFORMS — Vertical ladders
167
(1) A vertical ladder providing access to working levels of a scaffold shall
167(a)
be adequately fastened to the scaffold;
167(b)
be configured so that its siderails extend approximately one metre above the uppermost working level; and
167(c)
have rungs spaced at 30 centimetres on centre and have a clear space of at least 15 centimetres behind each rung.
167(2)
A ladder attached to a scaffold shall be positioned so that its use will not cause the scaffold to become unstable.
Not legal advice. Verify the cited article against the signed agreement.