Suggestions for Cost Effectiveness on Concrete Bridge Piers and Abutments

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Title: Suggestions for Cost Effectiveness on Concrete Bridge Piers and Abutments

Author(s): Marius B. Wechsler

Publication: Journal Proceedings

Volume: 82

Issue: 4

Appears on pages(s): 459-466

Keywords: bridge abutments; bridge anchorages; bridge foundations; bridge piers; bridges (structures); columns (supports); construction costs; economics; footings; precast concrete; reinforced concrete; skew bridges; structural design; substructures

Date: 7/1/1985

Abstract:
Substantial cost savings can be obtained on bridge construction by: 1. Determining the shapes of piers and abutments based on the fact that the side dimensions of an economical rectangular cross section should be poportional to the overturning moments for the two co-responding directions. 2. Providing normal bridge seats cantilevered over skewed piers. 3. Providing precast backwalls for abutments built under traffic. 4. Outlining anchorage abutments for suspension bridges or for aerial railways based on the fact that the safety factors for the two possible overturnings shall be equal.