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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)
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.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050. WSR 15-23-086, § 296-874-20010, filed 11/17/15, effective 12/18/15. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 05-01-054, § 296-874-20010, filed 12/7/04, effective 3/1/05.]
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