The employer shall ensure at a construction site of a building or other construction work that.-
(a) no suspended scaffold is raised or lowered by winches or climbers unless such scaffold is made of sound material, adequate strength and has been tested and certified safe for use of winches or climbers for such raising or lowering by a competent person before being taken into use;
(b) all suspended scaffolds, counter-balanced by counter-weights are of types, approved by the chief inspector of building and other construction works before being taken into use for building or other construction work;
(c) the working platform of a suspended scaffold is securely fastened to the building or structure as to be safe and to prevent such platform from swing; and -76-
(d) the safe working load which a suspended scaffold can carry, is displayed where such scaffold is being used.