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10 Gauge Thrie Beam on Bridge Anchor

Question
State MO
Description Text MwRSF has tested a number of steel guardrail-to-concrete-barrier (bridge or median) transitions.  Most of the designs call for a length of double-nested 12 ga. thrie beam panel in advance of the concrete.  Is a length of single 10 ga. panel a reasonable alternative to this design? 
Keywords
  • Approach Guardrail Transitions
  • Bridge Rails
  • Guardrail
Other Keywords none
Date May 5, 2014


Response
Response Testing has been conducted on a variety of thrie beam approach guardrail transitions using both nested 12 gauge and 10 gauge rails. Review of that testing has shown no concerns with the use of 10 gauge thrie beam in lieu of nested 12 gauge. Thus, it is believed that either configuration is acceptable. 
Date May 6, 2014


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