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Author : William F. Williams
Publisher :
ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (818 download)
Download or read book MASH Test 3-11 on the T131RC Bridge Rail written by William F. Williams and published by . This book was released on 2012 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roger P. Bligh
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (726 download)
Download or read book MASH Test 3-11 on the Texas T101 Bridge Rail written by Roger P. Bligh and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William F. Williams (Transportation engineer)
Publisher :
ISBN 13 :
Total Pages : 109 pages
Book Rating : 4.:/5 (122 download)
Download or read book MASH TL-3 Evaluation of 2019 MASH 2-Tube Bridge Rail Thrie Beam Transition written by William F. Williams (Transportation engineer) and published by . This book was released on 2020 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the tests reported herein was to assess the performance of the 2019 MASH 2-Tube Bridge Rail Thrie Beam Transition according to the safety-performance evaluation guidelines included in AASHTO MASH. The crash tests were performed in accordance with MASH TL-3, which involves two full-scale crash tests (MASH Tests 3-20 and 3-21). However, MASH states that when there are transitions between two barrier types with different stiffness, one from a more flexible barrier and the other to a more rigid barrier, a full-scale crash test is recommended for both types. Therefore, MASH Test 3-21 was performed at the transition from the thrie beam rail to bridge rail, and at the transition from the W-beam rail to thrie beam rail. This report provides details of the 2019 MASH 2-Tube Bridge Rail Thrie Beam Transition, detailed documentation of the crash tests and results, and an assessment of the performance of the 2019 MASH 2-Tube Bridge Rail Thrie Beam Transition for MASH TL-3 transition evaluation criteria. The 2019 MASH 2-Tube Bridge Rail Thrie Beam Transition performed acceptably for MASH TL-3 transitions.
Author : Roger P. Bligh
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (32 download)
Download or read book NCHRP Report 350 Test 3-11 of the Modified T8 Bridge Rail written by Roger P. Bligh and published by . This book was released on 2009 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William F. Williams (Transportation engineer)
Publisher :
ISBN 13 :
Total Pages : 115 pages
Book Rating : 4.:/5 (122 download)
Download or read book MASH TL-4 Evaluation of 2019 Mash 2-Tube Bridge Rail written by William F. Williams (Transportation engineer) and published by . This book was released on 2019 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the tests reported herein was to assess the performance of a new, taller Alaska Multi-State 2-Tube Bridge Rail (re-designated as 2019 MASH 2-Tube Bridge Rail) according to the safety-performance evaluation guidelines included in the American Association of State Highway and Transportation Officials (AASHTO), Manual for Assessing Safety Hardware (MASH), Second Edition 2016. The crash tests performed were in accordance with MASH Test Level 4 (TL-4), which involves three tests on the 2019 MASH 2-Tube Bridge Rail. This report provides details of the 2019 MASH 2-Tube Bridge Rail, detailed documentation of the crash tests and results, and an assessment of the performance of the 2019 MASH 2-Tube Bridge Rail for MASH TL-4 evaluation criteria.
Author : William F. Williams
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (818 download)
Download or read book MASH TL-3 Testing and Evaluation of a Steel Bridge Rail with Pickets written by William F. Williams and published by . This book was released on 2012 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 293 pages
Book Rating : 4.:/5 (932 download)
Download or read book Mash Test Nos. 3-17 and 3-11 on a Non-proprietary Cable Median Barrier written by and published by . This book was released on 2015 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Oscar Pena
Publisher :
ISBN 13 :
Total Pages : 732 pages
Book Rating : 4.:/5 (11 download)
Download or read book Development of a MASH TL-4 Steel, Side-mounted, Beam-and-post, Bridge Rail written by Oscar Pena and published by . This book was released on 2019 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new steel, side-mounted, beam-and-post, bridge rail was designed, crash-tested, and evaluated according to safety performance guidelines included in the American Association of State Highway and Transportation Officials Manual for Assessing Safety Hardware (MASH) for Test Level 4 (TL-4). The new bridge rail system was designed to be compatible to multiple concrete bridge decks utilized by the States of Illinois and Ohio. Bridge rail configurations were designed and optimized based on weight per foot, constructability, and safety. Post-to-rail and rail-to-rail connections were designed for the new bridge rail. Several concepts for these connections were configured, and after discussion with representatives from the Illinois and Ohio DOTs, a preferred concept was selected for full-scale crash testing with a single-unit truck, a pickup truck, and a small car. The new bridge rail consisted of three tubular steel rail elements supported by W6x15 (W150x22.5) steel posts mounted to the exterior, vertical edge of the concrete deck and spaced on 8 ft (2.4 m) on centers. The top rail element was an HSS 12-in. x 4-in. x 1⁄4-in. (HSS 304.8-mm x 101.6-mm x 6.4-mm) and the lower two rail elements were HSS 8-in. x 6-in. x 1⁄4-in. (HSS 203.2-mm x 152.4-mm x 6.4-mm). The centerline heights of the rail elements were 37 in. (940 mm), 28 in. (711 mm), and 16 in. (406 mm) above the surface of the deck for the top, middle, and bottom rails, respectively. Three MASH TL-4 crash tests were performed on the new bridge rail, which successfully contained and redirected the MASH TL-4 vehicles. All occupant risk measures and evaluation criteria were within MASH limits. For MASH test designation no. 4-12 with the single-unit truck, the impact severity did not meet the minimum limit of 142.0 kip-ft (180.6 kJ). Thus, test designation no. 4-12 is recommended to be re-run. However, a maximum roll angle of 36 degrees and a dynamic deflection of 4.3 in. (109.2 mm) represent a positive indication that a subsequent test with a single-unit truck would likely meet MASH TL-4 impact safety criteria.
