PART XI SCAFFOLDS, STAGES AND WORK PLATFORMS — Wheels
186
(1) The wheels on at least one end of a rolling scaffold shall be the swivel type.
186(2)
The wheels of a rolling scaffold shall not be less than 13 centimetres in diameter and shall be secured in the scaffold leg to prevent the wheel from falling out while the scaffold is being erected, used or dismantled.
186(3)
Height adjusting screws for castors of a rolling scaffold shall extend not more than two-thirds of their total length or 30 centimetres whichever is the lesser.
186(4)
A wheel of a rolling scaffold shall be equipped with effective brakes or locking devices which shall be applied when workers are working on the scaffold.
186(5)
A rolling scaffold mounted on pneumatic tires shall have supports in addition to pneumatic tires while the scaffold is being erected or dismantled or when a worker is on it.
Not legal advice. Verify the cited article against the signed agreement.