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Construction of pivot pier, inter-state bridge, Omaha, Neb.
Span 520 ft. Full details and description of method of sinking steel caisson 40 ft. diameter with a central open cylinder 20 ft. diameter for dredging. Braced iron cylinder above the caisson. Sunk about 120 ft. below the water surface, through clay, sand and gravel. Twenty water jets one inch diameter used to assist and guide the descent of the caisson. Excavation from interior by means of clam shell dredge bucket.
Construction of pivot pier, inter-state bridge, Omaha, Neb.
Span 520 ft. Full details and description of method of sinking steel caisson 40 ft. diameter with a central open cylinder 20 ft. diameter for dredging. Braced iron cylinder above the caisson. Sunk about 120 ft. below the water surface, through clay, sand and gravel. Twenty water jets one inch diameter used to assist and guide the descent of the caisson. Excavation from interior by means of clam shell dredge bucket.
Construction of pivot pier, inter-state bridge, Omaha, Neb.
Eng News
1893
2 pages
Article (Journal)
English
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