PDFWAC 296-874-20010
Make sure platforms meet minimum width requirements.
You must make sure scaffold platforms meet the minimum width requirements of Table 1, Minimum Platform Width.
Table 1
Minimum Platform Width
Type of Scaffold | Minimum Platform Width Required |
Ladder jack scaffold Pump jack scaffold | 12 inches (20 cm) |
Roof bracket scaffold Top plate bracket scaffold | |
Boatswain's chair | No minimum width |
All other scaffolds | 18 inches (46 cm) |
Exemption: | |
Platforms and walkways may be less than 18 inches (46 cm) wide if all of the following are met: | |
1. You can demonstrate that the area is so narrow that the platform or walkway cannot be at least 18 inches (46 cm) wide; | |
2. The platform or walkway is as wide as feasible; | |
3. Employees on those platforms or walkways are protected from falling by using guardrails or personal fall arrest systems. |