Horse Scaffolds
A horse scaffold means a supported scaffold consisting of a platform supported by construction horses.
- Make sure these scaffolds are no more than 10 feet or two tiers in height, whichever is less.
- When horses are arranged in tiers, make sure:
- Each horse must be placed directly over the horse in the tier below.
- The legs of each horse must be nailed down or otherwise secured to prevent displacement.
- Each tier must be crossbraced.
- Check construction of the scaffold to make sure it conforms to the guidelines in the table below.
| Maximum intended load (light duty) | 25 pounds/foot2* |
| Maximum intended load (medium duty) | 50 pounds/foot 2* |
| Bearers (light duty) | 2 x 4 inches |
| Bearers (medium duty) | 3 x 4 inches |
| Legs | 2 x 4 inches |
| Longitudinal bracing between legs | 1 x 6 inches |
| Gusset braces at top of legs | 1 x 8 inches |
| Half diagonal braces | 2 x 4 inches |
| *Horses shall be spaced not more than 8 feet apart for light-duty loads, and not more than 5 feet apart for medium-duty loads. [1926 Subpart L Appendix A (2)(f)] | |
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4-7. What is the maximum height a horse scaffold can reach?
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