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Publication Information

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Title: Strength of log bridge stringers after several year’s use in southeast Alaska

Author: Moody, Russell C.; Tuomi, R.L.; Eslyn, W.E.; Muchmore, F.W.;

Date: 1979

Source: Research Paper FPL-RP-346. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 4 pages

Publication Series: Research Paper (RP)

Description: Bending tests of 28 untreated log stringers from 12-year-old native timber bridges in southeast Alaska showed significant reductions in strength due to decay. Compared to results on fresh logs, strength reduction was about 25 percent, and could be predicted based on the loss in section modulus due to decay. Log stiffness was not significantly affected. Results will be helpful to engineers with responsibility of rating the load capacity of bridges having untreated log stringers.

Keywords: Picea sitchensis, roundwood, logs, strength, wooden bridges, stringers

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Moody, Russell C.; Tuomi, R.L.; Eslyn, W.E.; Muchmore, F.W. 1979. Strength of log bridge stringers after several year’s use in southeast Alaska. Research Paper FPL-RP-346. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 4 pages

 


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