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
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

(6.6 MB)

Title: Evaluating Naturally Durable Wood Species for Repair and Rehabilitation of Above-Ground Components of Covered Bridges

Author: Kirker, Grant T.; Clausen, Carol A.; Blodgett, A. B; Lebow, Stan T.

Date: 2013

Source: USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-224, 2013; 43 p.

Publication Series: General Technical Report (GTR)

Description: More than 1,500 covered bridges remain in the United States. They are a unique part of our history; thus, replacement of bridge components is an equally important part of preserving this uncommon style of craftsmanship. The goal of this project was to evaluate seven wood species for their durability in above-ground field exposure. Chemical analysis was also conducted using gas chromatography–mass spectrometry (GS–MS) for fatty acids and terpenoids in an attempt to correlate extractive content with durability. Extracts removed from the durable wood species were also tested in laboratory bioassays to determine their biological activity against wood decay fungi and termites. This report serves as a guide for the use of these naturally durable wood species for rehabilitation of above-ground components of covered bridges and incorporates the results of field and laboratory tests into the final recommendations.

Keywords: Natural durability, above-ground testing, decking, wood decay fungi, weathering, subterranean termites

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:


Kirker, Grant T.; Clausen, Carol A.; Blodgett, A. B; Lebow, Stan T. 2013. Evaluating naturally durable wood species for repair and rehabilitation of above-ground components of covered bridges. Gen. Tech. Rept. FPL-GTR-224. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 43 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.