Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

GeoTreesearch


Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

(1.3 MB bytes)

Title: Condition assessment of timber bridges. 2, Evaluation of several stress-wave tools

Author: Brashaw, Brian K.; Vatalaro, Robert J.; Wacker, James P.; Ross, Robert J.

Date: 2005

Source: Gen. Tech. Rep. FPL-GTR-160. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 11 p.

Publication Series: General Technical Report (GTR)

Description: This study was conducted to evaluate the accuracy and reliability of several stress-wave devices widely used for locating deteriorated areas in timber bridge members. Bridge components containing different levels of natural decay were tested using various devices. The specimens were then sawn (along their length) into slabs to expose their interior condition. The interior faces of these slabs were inspected visually and with a resistance micro-drill to confirm if deterioration was present. On the basis of these tests, we conclude that all four devices evaluated in this study can successfully be used to evaluate decay. There were, however, differences in the decay thresholds and user-friendliness among the devices.

Keywords: Timber, bridge, inspection, stress wave, ultrasonic, nondestructive

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.

XML: View XML

Citation:


Brashaw, Brian K.; Vatalaro, Robert J.; Wacker, James P.; Ross, Robert J. 2005. Condition assessment of timber bridges. 2, Evaluation of several stress-wave tools. Gen. Tech. Rep. FPL-GTR-160. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 11 p.

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.