The proposal when finalized, hopefully, later this year will probably require hook-on and attachable ladders to be provided with rest platforms at 20 feet maximum vertical intervals for attached ladders. On Novemthe Occupational Safety and Health Administration (OSHA) proposed to revise the Construction Industry Safety Standards addressing scaffolds. 450(a)(5) for fixed ladders apply in this situation. Non uniform rung spacing caused by joining end frames together is allowed provided the resulting spacing does not exceed 16-1/2 inches. 451(a)(13) should be liberally interpreted to permit the use of those ladder systems (both portable ladders and ladders built into the scaffold frame) which have a maximum rung spacing between rungs of 16-1/2 inches. In view of the various rung spacings of ladder end scaffolds, which have been designed and manufactured over the past 30 years specifically to provide safe access to scaffolds. 451(a)(13) in our general requirements for scaffolds requires only that an access ladder or equivalent safe access shall be provided. The enforcement of 29 1926.450(a)(5) would be inappropriate for a metal tubular scaffold. Cages, rest platforms or ladder safety device would not be required for employees ascending or descending the ladder. The ladder would have to be positioned so that its use will not have the tendency to tip the scaffold. 450(a)(4) could be adequately attached to the outside of a tubular metal scaffold to provide safe access and egress to a work platform located 100 feet above the ground at the present time. 450(a)(4) and (a)(5) to access ladder forĪ portable metal ladder meeting the requirements of. Suspension ropes must be shielded from heat-producing processes.SUBJECT: Interpretation and Applicability of the requirements of Suspension ropes supporting adjustable suspension scaffolds must be a diameter large enough to provide sufficient surface area for the functioning of brake and hoist mechanisms. Įmployers must replace wire rope when the following conditions exist: kinks six randomly broken wires in one rope lay or three broken wires in one strand in one lay one third of the original diameter of the outside wires is lost heat damage evidence that the secondary brake has engaged the rope and any other physical damage that impairs the function and strength of the rope. ĭrum hoists must contain no less than four wraps of the rope at the lowest point. The standard prohibits using repaired wire. Also see, OSHA Standards and Interpretation Letter: - Scaffolds: Lifelines, support lines, and suspension ropes cannot have a common anchor point. The suspension ropes must be long enough to allow the scaffold to be lowered to the level below without the rope passing through the hoist, or the end of the rope configured to prevent the end from passing through the hoist.
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