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One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


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Title: Small-Diameter Roundwood, Strong-Post W-Beam Guardrail Systems

Source: In: Proceedings WTCE 2006 - 9th world conference on timber engineering; 2006 August 6-10; Portland, OR: Oregon State University. Available on CD.

Author(s)Kretschmann, Faller, Reid, Hascall, Sicking, Rohde

Publication Year: 2006  View PDF »

Category: Conference Proceedings

Abstract: Round guardrail posts may provide an important value-added option for small-diameter thinnings. Such posts require minimum processing and are believed to have higher strength for 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 tests and Barrier VII computer simulations at the Midwest Roadside Safety Facility and the Forest Products Laboratory to determine dynamic and static material properties and correct embedment depths. Grading practices are recommended for round ponderosa pine and Douglas-fir guardrail posts for the new Midwest Guardrail System.

Keywords: Value added; Douglas fir; ponderosa pine; wood poles; roads; guard fences; posts; roundwood; small timbers; small diameter timber; smallwood; thinnings; guardrails

File size: 244 kb(s)

Date posted: 06/18/2009

This publication is also viewable on Treesearch:  view
RITS Product ID: 24009
Current FPL Scientist associated with this product
Kretschmann, David E.
Research General Engineer

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