Load Considerations for Beams

by F.P. Drew,

Serial Information: Journal of the Structural Division, 1959, Vol. 85, Issue 1, Pg. 113-124

Document Type: Journal Paper


Cumulative effects of railroad loadings of short duration; wood then exhibits greater strength than when loads are of long sustaining nature; if short load durations are repeated they can accumulate to several years duration; tests show that present concept of cumulative loading time can be revised; live load stresses in trestle stringers may accumulate to less than one year during service life rather than more than 10 yr currently in use.

Subject Headings: Load tests | Load duration | Live loads | Repeated loads | Service loads | Load factors | Beams | Rail transportation

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