MASH test 3-37 of the TxDOT 31-inch W-beam downstream anchor terminal.

Arrington, Dusty R.; Bligh, Roger P.; Ivev, Don L.; Texas Transportation Institute

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MASH test 3-37 of the TxDOT 31-inch W-beam downstream anchor terminal.

2011-12-01
By Arrington, Dusty R. ; Bligh, Roger P. ; Ivev, Don L.

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English

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Alternative Title:

Project title: Roadside safety device crash testing program
Creators:

Arrington, Dusty R. ; Bligh, Roger P. ; Ivev, Don L.

Arrington, Dusty R. ; Bligh, Roger P. ; Ivev, Don L. Less -
Corporate Creators:

Texas Transportation Institute
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Anchors (Structural Connectors) Bridge Railings Bridge Railings--Crash Tests--Texas Bridge Superstructures Guardrails Highway Safety Impact Tests Mechanical Tests Transportation Safety
Publication/ Report Number:

FHWA/TX-12/9-1002-6 ; Test Report No. 9-1002-6

FHWA/TX-12/9-1002-6 ; Test Report No. 9-1002-6 Less -
Resource Type:

Tech Report
Geographical Coverage:

Texas
Edition:

Test report; Sept. 2009¿Aug. 2011.
Corporate Publisher:

Texas Transportation Institute
Abstract:

The objective of this study was to develop a suitable replacement for the downstream “turndown”

guardrail anchor system. The “turndown” guardrail anchor system does not meet mandated test requirements

under MASH for upstream anchor application terminals; however, it does meet downstream requirements for

previous crash testing standards. Due to its low cost, TxDOT has used this anchor system with 27-inch

guardrail in downstream applications when it is outside of the clear zone of opposing traffic. With the new

federally mandated increase in guardrail height, TxDOT is considering increasing its standard guardrail

height to 31 inches. This increase in height increases the risk of a small sedan wedging under the guardrail

and snagging on the “turndown” anchor system. The current “turndown” anchor design does not include a

releasable connection detail for reverse direction impacts. For this reason, TxDOT has decided to develop a

new downstream anchor system rather than test the 31-inch configuration of the “turndown” anchor system.

This anchor system utilized standard parts found in the AASHTO-ARTBA-AGC Guide to

Standardized Highway Barrier Hardware when possible. This terminal is nonproprietary to allow for

competitive bidding to reduce costs. As this system will be developed for the sole purpose of anchoring the

downstream end of guardrail system, the testing matrix will include the optional crash test (3-37) found in

MASH for testing terminals in a reverse direction impact condition.
Format:

PDF
Funding:

Project 9-1002
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:27cda80d7c574fd9e6e11f7c3bb85c6a15957285faa78813ad9a1f4c3ac48d0f
Download URL:

https://rosap.ntl.bts.gov/view/dot/23782/dot_23782_DS1.pdf
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MASH test 3-37 of the TxDOT 31-inch W-beam downstream anchor terminal.

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