What is required for holes in the floor for ropes?

For holes in the floor intended for ropes, curbing guards are necessary to ensure safety and prevent accidents. Curbing guards serve as protective barriers around the openings where ropes may exit or enter, helping to keep them secure and preventing any potential fall hazards or entanglements. This is particularly important in elevator systems where the integrity of the ropes and the safety of personnel is paramount.

The other options serve different purposes or are not specifically required for holes in the floor for ropes. Safety covers, while they provide a protective layer, do not specifically address the unique safety needs related to rope management. Netting might be useful in some contexts but does not adequately protect the opening like curbing guards do. Sealing rings could relate more to round openings and are not tailored for the specific function of managing ropes in elevator systems. Thus, curbing guards are the most appropriate choice in this scenario.