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Stability
 Even
if a suspended scaffold has been assembled in compliance with every applicable standard, employers and workers must continue to exercise
caution and use sound work
practices to assure their safety. Extreme weather, excessive loads, or damage to structural components can all affect a scaffold's stability.
Note:
Except where indicated, these requirements also apply to multi-level, single-point adjustable, multi-point adjustable, interior hung, needle beam, catenary, and
float (ship) scaffolds.
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Tying |
- Two-point suspension scaffolds must be tied or otherwise secured to prevent them from swaying,
as determined to be necessary by a competent person. [1926.451(d)(18)]
- Window cleaners' anchors may not be used for
this purpose. [1926.451(d)(18)]
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Accident Report
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- In addition to direct connections to buildings (except window cleaners'
anchors), acceptable ways to prevent scaffold sway
include:
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Inspection |
- Scaffolds and scaffold components must be inspected for
visible defects by a competent person before each shift, and after each occurrence that could affect a
scaffold's integrity (such as being struck by a crane). [1926.451(f)(3)]
- Any part of a scaffold that has been damaged or weakened so that it no longer meets OSHA strength
requirements must either be repaired, replaced, braced, or removed from service. [1926.451(f)(4)]
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Accident Report |
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Moving Scaffolds |
- Scaffolds shall not be moved horizontally while employees are on them, unless they have been
designed for that purpose by a registered professional engineer, or in the case of mobile scaffolds, where the provisions of 1926.452(w)
are followed 1926.451(f)(5).
- Two-point suspension scaffolds shall not be bridged or otherwise connected one to another during raising and
lowering operations unless the bridge connections are articulated (attached), and the hoists properly sized. [1926.452(p)(5)]
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Weather |
- Employees are not permitted to work on or from a scaffold during storms or high wind, unless a
competent person has determined that it is safe, and those employees are protected by:
- Personal fall-arrest systems, or
- Wind screens (when windscreens are used the scaffold must be secured against the anticipated wind forces). [1926.451(f)(12)]
- Employees are prohibited from working on scaffolds covered with snow, ice, or other slippery materials, except as necessary for
removal of such materials. [1926.451(f)(8)]
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