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Catenary A catenary scaffold is a scaffold consisting of a platform supported by two essentially horizontal and parallel ropes attached to structural members of a building or other structure. Note: The requirements on this page are specific to catenary scaffolds only. For requirements that apply to all types of suspended scaffolds, please refer to the Two-point (swing stage) module of this eTool.
General Requirements
  • Catenary scaffolds may not have:

  • Platforms supported by wire rope must have hook-shaped stops on each of the platform to prevent them from slipping off the wire ropes. These hooks must be positioned so that they prevent the platform from falling if one of the horizontal wire ropes breaks. [1926.452(r)(2)]

  • Wire ropes must not be over-tightened to the point that a scaffold load will overstress them. [1926.452(r)(3)]

  • Wire ropes must be continuous and without splices between anchors. [1926.452(r)(4)]

  • Each employee on a catenary scaffold must be protected by a personal fall-arrest system. [1926.451(g)(1)(i)]

Non-mandatory Guidelines
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