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  Needle Beam
Needle Beam This simple type of scaffold consists of a platform suspended from needle beams, usually attached on one end to a permanent structural member. Note: The requirements on this page are specific to needle beam 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
  • Scaffold support beams must be installed on edge. [1926.452(u)(1)]

  • Ropes or hangers must be used for supports. (Exception: One end of the scaffold may be supported by a permanent structural member.) [1926.452(u)(2)]

  • Ropes must be securely attached to needle beams. [1926.452(u)(3)]

  • Support connections must be arranged to prevent the needle beam from rolling or becoming displaced. [1926.452(u)(4)]

  • Platform units must be attached by bolts or equivalent means. Cleats and overhang are not considered adequate means of attachment. [1926.452(u)(5)]


Non-mandatory Guidelines
  • For a maximum intended load of 25 pounds per square foot:

    • Beams must be 4 x 6 inches in cross section, with

    • A maximum beam span of 10 feet, and

    • The platform span must be no more than 8 feet.
  • Ropes:

    • Must be attached to the needle beam by a scaffold hitch or eye splice, and

    • The loose end must be tied by a bowline knot or a round turn and a half hitch. [1926 Subpart L Appendix A (u)(1)]
  • Rope strength must at least be equal to 1-inch diameter, first-grade manila rope. [1926 Subpart L Appendix A (u)(2)]
 
 
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