Strength of Log Bridge Stringers After Several Year's Use in Southeast Alaska.

Abstract

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. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1979
Accession Number
ADA078792

Entities

People

  • F. W. Muchmore
  • R. C. Moody
  • R. L. Tuomi
  • W. E. Eslyn

Organizations

  • Forest Products Laboratory

Tags

DTIC Thesaurus Topics

  • Agriculture
  • Analysis Of Variance
  • Data Science
  • Deflection
  • Diameters
  • Elastic Properties
  • Engineers
  • Indicators
  • Information Science
  • Inspection
  • Intervals
  • Modulus Of Elasticity
  • Regression Analysis
  • Stiffness
  • Structural Loads
  • Test Equipment

Readers

  • Materials Science (Mechanical Engineering).
  • Mathematics or Statistics
  • Riverine Ecology