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1926.452(r) Catenary Scaffolds
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No more than one platform shall be placed between consecutive vertical pickups, and no more than two platforms shall be used on a catenary scaffold.
Platforms supported by wire ropes shall have hook-shaped stops on each end of the platforms to prevent them from slipping off the wire ropes. These hooks shall be so placed that they will prevent the platform from falling if one of the horizontal wire ropes breaks.
Wire ropes shall not be tightened to the extent that the application of a scaffold load will overstress them.
Wire ropes shall be continuous and without splices between anchors.
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