The employer shall ensure at a construction site of a building or other construction work that,—
(a) surroundings of the shaft, used in excavation or tunnel work are protected from being washed away by construction of sufficient height;
(b) where a building worker is required to enter a shaft at an excavation or tunnelling work, safe means of access is provided for such entry;
(c) every shaft at excavation or tunnelling work is provided with a steel casing, concrete piping, timber shoring or other materials of adequate strength for the safety of building workers working in such shafts;
Section 40 (2) (q) Section 40 (2) (q) 59
(d) such casing and bracing are provided to a shaft at an excavation or tunnelling work up to the depth of such shaft at an excavation or tunnelling work as are required, according to the appropriate design for such casing and bracing ;
(e) a reinforced concrete raft and beam is provided around the opening of a shaft at an excavation or tunnelling work, if the ground surrounding of such opening is unstable or unsafe ; and
(f) the shaft sides shall be strengthened by providing structural steel ribs and vertical steel members shall also be provided to avoid falling of rods from the sides.