Floors General Conditions 29 CFR 1910.22 and

All floor surfaces must be kept clean, dry, and free from protruding nails, splinters, loose boards, holes, or projections. Where wet processes are used, drainage must be maintained and false floors, platforms, mats, or other dry standing places must be provided where practical. 

In every building or other structure, or part thereof, used for mercantile, business, industrial, or storage purposes, the loads approved by the building official must 

Every hatchway and chute floor opening must be guarded by a hinged floor opening cover equipped with standard railings to leave only one exposed side, or a removable railing with toeboards on not more than two sides and a fixed standard railing with toeboards on all other exposed sides. 

Every floor hole into which a person can accidentally walk must be guarded by either a standard railing with standard toeboard on all exposed sides, or by a floor hole cover that is hinged in place. While the cover is not in place, the floor hole must be attended or protected by a removable standard railing. 

If at any time, a powered industrial truck is found to be in need of repair, defective, or in any way unsafe, the truck must be taken out of service until it has been restored to a safe operating condition. High-lift rider trucks must be equipped with substantial overhead guards unless operating conditions do not permit. Fork trucks must be equipped with vertical-load backrest extensions when the types of loads present a hazard to the 

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