Comparision of Loads Around the World for Design of Highway Bridges

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Title: Comparision of Loads Around the World for Design of Highway Bridges

Author(s): K.S. Rajagopalan

Publication: Special Publication

Volume: 26

Issue:

Appears on pages(s): 35-48

Keywords: bending moments; bridges (structures); highway bridges; impact strength; live loads; loads (forces); moving loads; shear properties; spans; standards; structural design

Date: 1/1/1971

Abstract:
Design live loads for major bridges in eighteen countries are compared by studying their effects on simple spans of 30 to 140 ft. (9 to 42 meters nominal). A very wide diversity in the design load effects such as maximum bending moments and shear forces is noted--the heaviest effect being about two and one-half times that of the lightest. This wide diversity cannot be easilty justified by the normal volumes of traffic loads in these countries. It is hoped a more uniform design load, if specified, will result in economy in some countries and perhaps greater safety in others.