—(1) It shall be the duty of the responsible person to ensure that the requirements of paragraphs (2) to (8) are complied with.
(2) The standards of a scaffold in a workplace shall be —
plumb where practicable;
fixed sufficiently close together to secure the stability of the scaffold, having regard to all the circumstances;
in the case of a timber scaffold, spaced not more than 1.5 metres apart; and
in the case of a metal scaffold, subject to paragraph (3), spaced not more than 2.5 metres apart.
(3) No metal scaffold with standards spaced more than 2.5 metres apart shall be constructed or erected in a workplace unless it has been approved in writing by the Commissioner.
(4) Subject to paragraph (5), a standard of a scaffold in a workplace shall be placed on an adequate and secured sole plate in order that the foot of the standard does not rest directly on the ground or supporting surface, so as to prevent any vertical displacement of the foot.
(5) Where the floor or supporting structure is of sufficient rigidity to evenly distribute the load imposed upon it by the standard without causing any vertical displacement of the standard, the provision of a sole plate under the standard shall not be necessary.
(6) The foot of a standard of any frame or modular scaffold in a workplace shall be secured to a base plate so that it does not rest directly on the ground or supporting surface.
(7) The ledgers of a metal scaffold in a workplace shall be spaced at vertical intervals of not more than 2 metres.
(8) The ledgers of a timber scaffold in a workplace shall —
as far as possible, be horizontal;
be spaced at vertical intervals of not more than 1.8 metres; and
be securely fastened to the standards.