In the Wet

by Ben C. Gerwick, Jr., (Hon.M.ASCE), Chairman; Ben C. Gerwick, Inc., 601 Montgomery Street, San Francisco, CA 94111,
Paul E. Bach, President; Ben C. Gerwick, Inc., 601 Montgomery St., San Francisco, CA 94111,
George Fotinos, Chief Engr.; Ben C. Gerwick, Inc., 601 Montogomery St., San Francisco, CA 94111,

Serial Information: Civil Engineering—ASCE, 1995, Vol. 65, Issue 5, Pg. 46-47

Document Type: Feature article


The concept of using large diameter vertical cylinder piles of steel and concrete is not new. Vertical cylinders constructed in pneumatic caissons go back at least 70 years. Steel cylinders 2 m in diameter socketed into rock and filled with concrete support the first Martinez-Benicia Bridge in California, and the Guaynabara Bay Crossing near Rio de Janeiro, both constructed in the 1960-1970 era. More recently drilled shafts of reinforced concrete have been widely used by European bridge builders - we shall have more to say about them a little later. Despite this past history, the use of large diameter cylinder piles has not been universally adopted and the design-construction process has not been fully optimized.

Subject Headings: Cylinders | Steel piles | Steel bridges | Reinforced concrete | Concrete piles | Concrete bridges | Shafts

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