Initial Assessment of Compliance of Texas Roadside Safety Hardware with Proposed Update to NCHRP Report 350 PDF Download
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Author: Roger P. Bligh
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 140
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Author: Roger P. Bligh
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 140
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Author: Eugene Buth
Publisher:
ISBN:
Category : Roads
Languages : en
Pages :
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"The Federal Highway Administration initiated this contract with the objective to crash test and evaluate several terminals, transitions, and longitudinal barriers to NCHRP Report 350. NCHRP Report 350 specifies crash tests and evaluation criteria for three performance levels for terminals and six performance levels for transitions and longitudinal barriers. The buried-in-backslope terminals evaluated were the G4 on steel posts and wood blockouts with a rub rail and a 6 to 1 vee ditch and the G4 with steel posts and wood blockouts with a 4 to 1 slope. Both met specifications for NCHRP Report 350 test 3-35. The 3-strand New York cable terminal was evaluated and met requirements for NCHRP Report 350 test 3-34. The transitions evaluated under this contract included the vertical wall transition (W-beam with W-beam rub rail and steel posts), the vertical flared back transition (W-beam with channel rub rail, steel posts, and routed wood blockouts), the Pennsylvania Department of Transportation (DOT) transition (vertical flared back concrete parapet with W-beam, rub rail, steel posts, and routed wood blockouts), the Nebraska thrie beam transition (vertical wall parapet with thrie beam), and the Connecticut W-beam transition (NJ-shape wall with W-beam and channel rub rail). All the transitions met the required criteria for NCHRP Report 350 test 3-21, except for the vertical flared back transition. The MB1 median cable barrier chosen for evaluation was the Washington State DOT (WSDOT) cable barrier with a New York cable rail terminal. The thrie beam guardrail with steel posts and routed wood blockouts and the strong wood post thrie beam guardrail were also evaluated. The cable barrier and both thrie beam guardrails met the required specifications for NCHRP Report 350 test 3-11. The modified thrie beam guardrail with 2.1-m-long W150x14 steel posts and W360x33 blockouts (Design No. SGR09b) was evaluated and met specifications for NCHRP Report 350 test 4-12. Construction details for all the terminals, transitions, and longitudinal barriers evaluated are reported herein. Also included are details of the crash tests performed and the assessment of each test."--Technical report documentation page.
Author:
Publisher:
ISBN:
Category : Herrenchiemsee (Castle)
Languages : en
Pages : 24
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Author: D. Lance Bullard
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 12
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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Research Results Digest 349: Evaluation of Existing Roadside Safety Hardware Using Manual for Assessing Safety Hardware (MASH) Criteria explores the safety performance of widely used non-proprietary roadside safety features by using MASH. Examples of features evaluated include longitudinal barriers (excluding bridge railings), terminals and crash cushions, transitions, and breakaway supports. The complete report on the project that developed NCHRP RRD 349 was published as NCHRP Web-Only Document 157.
Author: American Association of State Highway and Transportation Officials
Publisher: AASHTO
ISBN: 1560514167
Category : Social Science
Languages : en
Pages : 275
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Author: Roger P. Bligh
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 0
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In 2009, the American Association of State Highway and Transportation Officials (AASHTO) published the Manual for Assessing Safety Hardware (MASH), which supersedes the previous crash test and evaluation guidelines. A MASH implementation agreement was jointly developed and adopted by the Federal Highway Administration and AASHTO. It establishes implementation dates for different categories of roadside safety features. Texas Department of Transportation Bridge, Design, Maintenance, and Traffic Operations Divisions reviewed their standards for roadside safety devices and identified those devices that require testing and evaluation to assess MASH compliance. Under this project, roadside safety systems used in Texas will be crash-tested in accordance with MASH criteria in three phases over a 3-year period. A total of 10 devices were tested and evaluated during Phase I. In Phase II, an additional 14 devices were tested and evaluated. In Phase III, which is the subject of this report, an additional 14 devices were tested and evaluated. This report documents the crash testing and evaluation of these devices in accordance with MASH criteria. The critical configurations were identified and critical tests performed to assess MASH compliance.
Author: Roger P. Bligh
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 70
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Author: K. K. Mak
Publisher:
ISBN:
Category :
Languages : en
Pages : 282
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Author: Pierre Doriou
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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Author: K. K. Mak
Publisher:
ISBN:
Category :
Languages : en
Pages : 206
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