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
 

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

View PDF (2.1 MB bytes)

Title: Investigating the use of small-diameter softwood as guardrail posts: static test results

Author: Kretschmann, David E.; Faller, Ron; Hascall, Jason; Reid, John; Sicking, Dean; Rohde, John; Shilts, Dick; Nelson, Tim;

Date: 2007

Source: Research Paper FPL-RP-640. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 23 pages.

Publication Series: Research Note (RN)

Description: Round guardrail posts may provide an important value added option for small-diameter thinnings. Such posts require minimum processing and have been shown to have higher strength compared to the equivalent rectangular volume. The resulting value-added product may bring a higher return compared to lumber. The obstacles to immediate utilization of ponderosa pine and Douglas-fir guardrail posts are the need for full-scale crash testing, a visual grading rule, and an installation guide. This paper reports on the static and dynamic tests performed at the USDA Forest Products Laboratory in Madison, Wisconsin, and the Midwest Roadside Safety Facility in Lincoln, Nebraska, to determine material properties for designing a new Midwest Guardrail System for round wood posts. Grading practices are recommended for round ponderosa pine, Douglas-fir, and southern yellow pine guardrail posts for the new Midwest Guardrail System.

Keywords: Round guardrail posts, small-diameter, Midwest Guardrail System, Douglas-fir, ponderosa pine, southern yellow pine, roads, guardrail fences, wood poles, softwoods, smallwood, roundwood, poles, roads, guard fences

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:


Kretschmann, David E.; Faller, Ron; Hascall, Jason; Reid, John; Sicking,Dean; Rohde, John; Shilts, Dick; Nelson, Tim 2007. Investigating the use of small-diameter softwood as guardrail posts: static test results. Research Paper FPL-RP-640. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 23 pages.

 


 [ 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.