Performance of the Midwest guardrail system with rectangular wood posts

Robert W. Bielenberg, John D. Reid, Ron Faller, Scott K. Rosenbaugh, Karla A. Lechtenberg

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

Strong-post W-beam is one of the most enduring and prolific safety barriers in the world. Over the years, it has been modified and updated to improve performance. Throughout these changes, two types of guardrail posts have been used to support the rail element: W6 × 8.5 steel posts and 6-in.-wide × 8-in.-deep wood posts. Recent updates to roadside safety hardware evaluation criteria and concerns with the performance of the G4 (1S) and G4 (2W) strong-post W-beam systems have led to the need for enhanced strong-post guardrail designs. The Midwest Guardrail System (MGS) was developed to address this need and provides improved performance over previous strong-post W-beam systems. The MGS was developed and tested with steel support posts, and it was believed that the use of wood posts in the system would provide similar barrier performance. However, the effect of wood posts in the MGS was never quantified through full-scale crash testing. The objective of this study was to investigate and evaluate the performance of the MGS with rectangular posts made of southern yellow pine. This effort included a review of the performance of wood and steel guardrail posts as it pertained to the MGS, the completion of two full-scale crash tests according to the Manual for Assessing Safety Hardware (MASH) safety requirements, and a comparison of the full-scale test results with MASH safety criteria and previous steel-post and alternative species wood-post MGS tests. Finally, recommendations were developed to implement the wood-post MGS and wood posts in MGS special applications.

Original languageEnglish (US)
Title of host publicationTransportation Research Record
PublisherNational Research Council
Pages27-40
Number of pages14
ISBN (Electronic)9780309295253
DOIs
StatePublished - Jan 1 2014

Publication series

NameTransportation Research Record
Volume2437
ISSN (Print)0361-1981

Fingerprint

Wood
Steel
Hardware
Roadsides
Rails
Testing

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering

Cite this

Bielenberg, R. W., Reid, J. D., Faller, R., Rosenbaugh, S. K., & Lechtenberg, K. A. (2014). Performance of the Midwest guardrail system with rectangular wood posts. In Transportation Research Record (pp. 27-40). (Transportation Research Record; Vol. 2437). National Research Council. https://doi.org/10.3141/2437-04

Performance of the Midwest guardrail system with rectangular wood posts. / Bielenberg, Robert W.; Reid, John D.; Faller, Ron; Rosenbaugh, Scott K.; Lechtenberg, Karla A.

Transportation Research Record. National Research Council, 2014. p. 27-40 (Transportation Research Record; Vol. 2437).

Research output: Chapter in Book/Report/Conference proceedingChapter

Bielenberg, RW, Reid, JD, Faller, R, Rosenbaugh, SK & Lechtenberg, KA 2014, Performance of the Midwest guardrail system with rectangular wood posts. in Transportation Research Record. Transportation Research Record, vol. 2437, National Research Council, pp. 27-40. https://doi.org/10.3141/2437-04
Bielenberg RW, Reid JD, Faller R, Rosenbaugh SK, Lechtenberg KA. Performance of the Midwest guardrail system with rectangular wood posts. In Transportation Research Record. National Research Council. 2014. p. 27-40. (Transportation Research Record). https://doi.org/10.3141/2437-04
Bielenberg, Robert W. ; Reid, John D. ; Faller, Ron ; Rosenbaugh, Scott K. ; Lechtenberg, Karla A. / Performance of the Midwest guardrail system with rectangular wood posts. Transportation Research Record. National Research Council, 2014. pp. 27-40 (Transportation Research Record).
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