§ 47.237. Exceptions.
(a) Opening covers. If it is impractical to use railings, floor and ground level openings shall be guarded by covers. This exception applies only if, when the covers are removed, the openings are guarded with standard removable railings. The covers shall be of sufficient strength to withstand the heaviest load to which the surrounding area may be subjected to the usual course of operations.
(b) Balustrades. Balustrades may be installed in lieu of standard railings if the posts of the balustrades meet the height, spacing and fastening requirements specified for railings and if the space between the top railing and the floor is filled in so as to afford protection equal to that supplied by a middle rail and toeboard. Balustrades 36 inches in height from the middle of the tread may be installed on stairways.
(c) Panels. When the panels between posts and top rail and floor are fitted with substantial expanded metal, wire mesh or solid material, the middle railing may be omitted.
(d) Omission. The middle railing is not required on platforms used only for lumber storage.
(e) Height. In connection with festooners, drying rooms and other operations which require the operator to frequently reach across the railings provided, the Department may accept railings not less than 36 inches high if they conform to all other requirements.
(f) Chains. In the case of pits and other floor or ground level openings, such as pouring pits in foundries, and runways and platforms where the nature of the operations requires that railings be frequently removed, chains of equal strength may be used in place of standard railings. Such chains shall be taut when in place. When chains are used, the spacing, strength and fastening specifications for posts shall be the same as for standard rails. The use of rope or wire cable in place of chains is prohibited.
(g) Omission. Railings are not required around pits and other openings when they are so constructed that the top of the pit or opening is 42 or more inches above floor or ground level.
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