• When platforms are moved to the next level, the existing platform must be left undisturbed until the new bearers have been set in place and braced. [29 CFR 1926.452(a)(1)]
• Where wooden poles are spliced, the following regulations apply:
  • The ends must be squared.
  • The upper section must rest squarely on the lower section.
  • Wood splice plates or scab plates must be provided on at least two adjacent sides, and must:
    • Extend at least 2 feet on either side of the splice.
    • Overlap the abutted ends equally.
    • Have at least the same cross-sectional areas as the pole.
  • Splice plates made of materials other than wood may be used, as long as they are of equivalent strength. [29 CFR 1926.452(a)(9)]
• Pole scaffolds over 60 feet in height must [29 CFR 1926.452(a)(10)]:
  • Be designed by a registered professional engineer.
  • Be constructed and loaded in accordance with that design.

NOTE: Non-mandatory Appendix A to this subpart contains examples of criteria that will enable an employer to comply with design and loading requirements for pole scaffolds under 60 feet in height.

• Crossbracing must be installed between the inner and outer sets of poles on double pole scaffolds. [29 CFR 1926.452(a)(2)]
• Diagonal bracing must be installed in both directions across:
  • The entire outside face of double- and single-pole scaffolds. [29 CFR 1926.452(a)(4)]
  • The entire inside face of double-pole scaffolds used to support loads of 50 lbs. or more per square foot. [29 CFR 1926.452(a)(3)]
• Runners and bearers must be installed on edge. [29 CFR 1926.452(a)(5)]
• Bearers must extend a minimum of 3 inches over the outside edge of runners. [29 CFR 1926.452(a)(6)]
• Runners must [29 CFR 1926.452(a)(7)]:
  • Extend over two poles at minimum.
  • Be supported by bearing blocks securely attached to the poles.
• Braces, bearers, and runners must not be spliced between poles. [29 CFR 1926.452(a)(8)]