TY - GEN
T1 - Small-diameter roundwood, strong-post W-beam guardrail systems
AU - Kretschmann, David
AU - Falier, Ronald
AU - Reid, John
AU - Hascall, Jason
AU - Sicking, Dean
AU - Rohde, John
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84870011580
SN - 9781622762859
T3 - 9th World Conference on Timber Engineering 2006, WCTE 2006
SP - 482
EP - 489
BT - 9th World Conference on Timber Engineering 2006, WCTE 2006
T2 - 9th World Conference on Timber Engineering 2006, WCTE 2006
Y2 - 6 August 2006 through 10 August 2006
ER -