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1926.804(b) "Caisson"
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A wood, steel, concrete or reinforced concrete, air- and water-tight chamber in which it is possible for men to work under air pressure greater than atmospheric pressure to excavate material below water level.
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1926.801 Underground Construction, Caissons, Cofferdams and Compressed Air, Caissons
Wherever, in caisson work in which compressed air is used, and the working chamber is less than 11 feet in length, and when such caissons are at any ...
1926.804(b) Underground Construction, Caissons, Cofferdams and Compressed Air, "Caisson"
A wood, steel, concrete or reinforced concrete, air- and water-tight chamber in which it is possible for men to work under air pressure greater than ...
Subpart S Underground Construction, Caissons, Cofferdams and Compressed Air
AUTHORITY: 40 U.S.C. 3701; 29 U.S.C. 653, 655, 657; and Secretary of Labor's Orders 12-71 (36 FR 8754), 8-76 (41 FR 25059), 9-83 (48 FR 35736), 1-90 ...
1926.801(f) Underground Construction, Caissons, Cofferdams and Compressed Air,
In caisson operations where employees are exposed to compressed air working environments, the requirements contained in § 1926.803 shall be complied with ...
1926.803(g)(1)(x) Underground Construction, Caissons, Cofferdams and Compressed Air,
Locks on caissons shall be so located that the bottom door shall be not less than 3 feet above the water level surrounding the caisson on the outside ...