44 chapters · 701 sections in this title.
RCW 49.24.270 Shields to be provided.
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Wherever, in the prosecution of caisson work in which compressed air is employed, the working chamber is less than twelve feet in length, and when such caissons are at any time suspended or hung while work is in progress, so that the bottom of the excavation is more than nine fee…
RCW 49.24.280 Caissons to be braced.
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All caissons shall be properly and adequately braced before loading with concrete or other weight. [ 1941 c 194 s 21; Rem. Supp. 1941 s 7666-29.]
RCW 49.24.290 Cages—Hoisting apparatus.
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In all shafts where men are hoisted or lowered, an iron-bonneted cage shall be used for the conveyance of men, but this provision shall not apply to shafts in the process of sinking or during the dismantling of the shaft after work in the tunnel is substantially completed. Cages …
RCW 49.24.300 Buckets in vertical shafts.
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In all vertical shafts in which hoisting is done by means of a bucket, suitable guides shall be provided when the depth exceeds ten times the diameter or width of the shaft, but in no case shall the maximum depth without guides exceed one hundred and fifty feet. In connection wit…