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PDFWAC 296-307-28054

What materials may be used for guarding horizontal overhead belts?

(1) Guards for horizontal overhead belts must run the entire length of the belt and follow the line of the pulley to the ceiling or extend to the nearest wall.
Exception:
Where belts are located so that it is impractical to extend the guard to wall or ceiling, the guard must completely enclose the top and bottom runs of the belt and the face of pulleys.
(2) The guard and its supporting parts must be securely fastened to the wall or ceiling by gimlet-point lag screws or through bolts. In masonry, expansion bolts must be used. We recommend using bolts placed horizontally through floor beams or ceiling rafters.
(3) When necessary, suitable reinforcement must be provided for the ceiling rafters or overhead floor beams to sustain safely the weight and stress imposed by the guard.
(4) The interior surface of all guards must be smooth and free from projections.
Exception:
Where construction demands it, protruding shallow roundhead rivets may be used.
[WSR 97-09-013, recodified as § 296-307-28054, 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-28054, filed 10/31/96, effective 12/1/96.]
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