Condition of Materials
Remove all slippery material from platforms and other scaffold components. Working on a scaffold coated with snow, ice, or other slippery material is prohibited.
Frost on scaffold railing during cold temperatures.
Hoisting and Rigging
Ensure hoisting and rigging equipment is available to lift components to the erection point and eliminate the need to climb with components. Examine all scaffold components prior to erection and do the following:
- Return and tag "Do Not Use" or destroy defective components.
- Prohibit or restrict the intermixing of manufactured scaffold components, unless:
- the components fit together properly, without force
- the use of dissimilar metals will not reduce strength
- the design load capacities are maintained
Crossbracing too high to use as a top rail.
Crossbracing
When the crosspoint of crossbracing is used as a toprail, it must be between 38 inches (0.97 m) and 48 inches (1.3 meters) above the work platform.
Knowledge Check Choose the best answer for the question.
1-7. When is working on a scaffold always prohibited?
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