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Washington Administrative Code (Last Updated: November 23, 2016) |
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Title 296. Labor and Industries, Department of |
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Chapter 296-307. Safety standards for agriculture. |
Section 296-307-28060. What materials must be used for guardrails and toeboards?
Latest version.
- (1) A guardrail used to guard power transmission parts must be 42 inches tall, with a midrail between the top rail and the floor.(2) Posts must be 8 feet apart or less. They must be permanent and substantial, smooth, and free from protruding nails, bolts, and splinters. If made of pipe, the post must be at least 1-1/4 inches inside diameter. If posts are made of metal shapes or bars, the section must be as strong as posts made of 1-1/2 by 1-1/2 by 3/16-inch angle iron. If posts are made of wood, the posts must be at least 2 by 4 inches. The upper rail must be 2 by 4 inches, or two 1 by 4 inch strips, one at the top and one at the side of the posts. The midrail must be at least 1 by 4 inches.(3) The rails (metal shapes, metal bars, or wood), should be on the side of the posts that gives the best protection and support. Where panels are fitted with expanded metal or wire mesh (as noted in Table 1) the middle rails may be omitted. Where guard is exposed to contact with moving equipment, additional strength may be necessary.(4) Toeboards must be at least 4 inches tall, of wood, metal, or metal grill of a maximum 1-inch mesh. Toeboards at flywheel pits should be placed as close to edge of the pit as possible.Table P-1TABLE OF STANDARD MATERIALS AND DIMENSIONSTable P-2HORIZONTAL OVERHEAD BELTS, ROPES, AND CHAINS7 FEET OR MORE ABOVE FLOOR OR PLATFORM[Statutory Authority: RCW 49.17.040. WSR 98-24-096, § 296-307-28060, filed 12/1/98, effective 3/1/99. WSR 97-09-013, recodified as § 296-307-28060, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW 49.17.040, [49.17.]050 and [49.17.]060. WSR 96-22-048, § 296-306A-28060, filed 10/31/96, effective 12/1/96.]