The employer shall ensure at a construction site of a building or other construction work that,—
(a) crawling boards used for work, on steep roofs are of adequate strength, made of sound material and of the type approved for the purpose of their use as per relevant national standards.
(b) crawling boards ref erred to in clause (a) are kept in good repairs and inspected by a responsible person before taken into use;
(c) crawling board referred to in clause (a) is secured to a steep roof on which it is used by ridge hooks or other effective means; and
(d) a firmly fastened life line of adequate strength is strung beside each crawling board referred to in clause (a) throughout its length while using such crawling boards.
CHAPTER XV.
Ladders and Step-Ladders.
!72. Construction and safe use.-The employer shall ensure at a construction site of a building or other construction work that,—
(a) every ladder or step-ladder used in building or other construction work is of good construction, made of sound material and of adequate strength for the purpose for which such ladder or step-ladder is used;
(b) when a ladder is used as a means of communication, such ladder is lashed to a fixed structure so that while working on such ladder it does not slip:
(c) a ladder or a step ladder does .not stand on loose bricks or other loose packing and has a level and firm footing;
(d) where it is required, in case of use of fixed ladders, sufficient foot-holds and hand-holds are provided for use by the building worker:
(e) every ladder is,-
(i) secured so as to prevent undue swaying:
(ii) equally and properly supported on each of its upright:
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(iii) so used as not to cause undue sagging; and
(iv) placed as nearly as possible at a inclination of four in one;
(f) the use of all ladders and step ladders conform to the relevant national standards for their use.