NCHRP Report 350 Test 4-12 of the New York Four-Rail Curbless Bridge Rail PDF Download
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Author: C. Eugene Buth
Publisher:
ISBN:
Category : Bridge railings
Languages : en
Pages : 49
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Book Description
This report presents the details of the New York Four-Rail Curbless Bridge Railing and the results of the single-unit truck test: National Cooperative Highway Research Program (NCHRP) Report 350 test designation 4-12, which is the 8000-kg single-unit truck impacting and critical impact point of the length-of-need at a nominal impact speed and angle 80 km/h and 15 degrees. The New York Four-Rail Curbless Bridge Railing met all criteria for NCHRP Report 350 test designation 4-12.
Author: C. Eugene Buth
Publisher:
ISBN:
Category : Bridge railings
Languages : en
Pages : 49
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Book Description
This report presents the details of the New York Four-Rail Curbless Bridge Railing and the results of the single-unit truck test: National Cooperative Highway Research Program (NCHRP) Report 350 test designation 4-12, which is the 8000-kg single-unit truck impacting and critical impact point of the length-of-need at a nominal impact speed and angle 80 km/h and 15 degrees. The New York Four-Rail Curbless Bridge Railing met all criteria for NCHRP Report 350 test designation 4-12.
Author: C. Eugene Buth
Publisher:
ISBN:
Category :
Languages : en
Pages : 53
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Book Description
This report presents the details of the New York Four-Rail Curbless Bridge Railing and results of the pickup truck test: National Cooperative Highway Research Program (NCHRP) Report 350 test designation 4-11, which is the 2000-kg pickup truck impacting the critical impact point (CIP) at 100 km/h and 25 degrees. The New York Four-Rail Curbless Bridge Railing met the required criteria specified for NCHRP 350 test designation 4-11.
Author: C. Eugene Buth
Publisher:
ISBN:
Category : Bridge railings
Languages : en
Pages : 45
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Book Description
This report presents the details of the New York Two-Rail Curbless Bridge Railing and the results of the single-unit truck test: National Cooperative Highway Research Program (NCHRP) Report 350 test designation 4-12, which is the 8000-kg single-unit truck impacting and critical impact point of the length-of-need at a nominal impact speed and angle 80 km/h and 15 degrees. The New York Two-Rail Curbless Bridge Railing met all criteria for NCHRP Report 350 test designation 4-12.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This report documents the results of a crash test of a New York Two-Rail Bridge Rail. The New York Two-Rail Curbless Bridge Railing is a steel-beam and steel-post system on a concrete bridge deck. This was the first test of a series intended to evaluate this new bridge rail design. The objective was to see if it meets Test Level Four (TL-4) in NCHRP Report 350. In this test, an 820-kg small car impacted the bridge rail at a nominal speed and angle of 100 km/h and 20 degrees. The test results met all of the evaluation criteria for the test designated as No. 4-10 in NCHRP Report 350.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This report documents the results of a crash test of a New York Two-Rail Bridge Rail. The New York Two-Rail Curbless Bridge Railing is a steel-beam and steel-post system on a concrete bridge deck. This was the second test of a series intended to evaluate this new bridge rail design. The objective was to see if it meets Test Level Four (TL-4) in NCHRP Report 350. In this test, a 2000-kg pickup truck impacted the bridge rail at a nominal speed and angle of 100 km/h and 25 degrees. The bridge rail contained the vehicle and redirected it. At this time there is no widely accepted measure of occupant risks associated with deformations or intrusions into the passenger compartment. Of necessity, this factor must be assessed in large part by the judgement of the test agency and the user agency, or both. The researchers have concluded that this bridge rail did not meet evaluation criteria D and K for Test No. 4-11 in NCHRP Report 350 due to separation in the floor plan and excessive deformation of the occupant compartment.
Author: C. Eugene Buth
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 227
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Book Description
The objective of this study was to crash test and evaluate the New York Two-Rail Curbless and FourRail Curbless Bridge Railings, and the box beam transition. Under the first part of the study, the Two-Rail and Four-Rail bridge railings were evaluated to National Cooperative Highway Research Program (NCHRP) Report 350 test level 4 (TL-4). To evaluate to TL-4, three full-scale crash tests on the length of need (LON) of the longitudinal barrier, or bridge railing, are required. These include an 820-kg passenger car impacting the critical impact point (CIP) at a nominal impact speed and angle of 100 km/h and 20 degrees, a 2000-kg pickup truck impacting the CIP at a nominal impact speed and angle of 100 km/h and 25 degrees, and an 8000-kg single-unit truck impacting the CIP at a nominal impact speed and angle of 80 km/h and 15 degrees. After evaluation of the two bridge railings, New York DOT and Federal Highway Administration (FHWA) decided to evaluate a box-beam transition attached to the New York Four-Rail Curbless Bridge Railing. NCHRP Report 350 test designation 3-21, which is the 2000-kg pickup truck impacting the CIP of the transition at 100 km/h and 25 degrees, was performed on the transition. This report presents the details and results of all six crash tests performed under this contract.
Author: Dean C. Alberson
Publisher:
ISBN:
Category : Bridge railings
Languages : en
Pages : 54
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Book Description
Texas Department of Transportation (TXDOT) and Florida Department of Transportation (FDOT) frequently receive requests to provide aesthetically pleasing traffic rails for use on select bridges and roadways. TxDOT, in response to providing context sensitive design alternatives, initiated a project to develop additional aesthetically pleasing rail alternatives. Under a previous TxDOT project, the F411 bridge rail was constructed and crash tested to Test Level 3 (TL-3). The TL-3 test is a 4405-lb (2000 kg) pickup impacting the railing at 25 degrees and 62.2 mi/h (100 krn/h). This test requires both containment and stability, and non-overturning. Since some breakage of the parapet is possible, potential for vehicle snagging is likely. Vehicle snagging can contribute to vehicle instabilities in the redirection sequence and potential rollover. The TxDOT F411 bridge rail contained and redirected the vehicle, which remained upright during and after the collision period. The bridge rail met the required specifications for NCHRP Report 350 test 3-11. The objective of this research is the full-scale crash test and evaluation of the F411 to Test Level 4 (TL-4). The most direct approach for accomplishing the objectives of this task is to perform a full-scale TL-4 crash test of this railing design. The TL-4 vehicle is a single-unit box-van truck impacting the railing at 15 degrees and 49.7 mi/h (80 krn/h). While containment is required, overturning of the vehicle 90 degrees is an acceptable test outcome. The TxDOT F411 bridge rail performed acceptably for NCHRP Report 350 test 4-12. Based on the performance of the F411 bridge rail in the full-scale crash test to TL-4 test conditions, the F411 may be used where containment of 18,000 lb single-unit trucks is desired.
Author: John Russell Jewell
Publisher:
ISBN:
Category : Bridge railings
Languages : en
Pages : 64
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Book Description
Over the course of this project a see-through steel bridge rail (Type California ST-20) was developed and tested. The ST-20, as tested, is at the limits of meeting the NCHRP Report 3501 TL-4 test matrix. The bridge rail also met the requirements established in the AASHTO Bridge Design Specifications for use as a bicycle rail and is considered an aesthetically pleasing see-through bridge rail. The barrier, as tested, uses steel posts at 3-m spacing to support four boxbeam rails and one additional handrail to meet the height requirements for bicycles. Because the ST-20 is based on a TL-4 bridge rail from Wyoming DOT3,4, only Test 4-11 (NCHRP Report 350) was considered necessary.
Author: Robert Meline
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 90
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Book Description
A bridge rail Type 70 was built and tested in accordance with NCHRP Report 350. The Type 70 bridge rail is an 810 mm tall concrete barrier with a sloping face of 9.1 deg from the vertical. The barrier tested was 22.9 m long and was constructed at the Caltrans Dynamic Test Facility in West Sacramento, California. A total of four crash tests were conducted under NCHRP Report 350 test level 4, one with an 820 kg car, two with 2000 kg pickup trucks and one with an 8000 kg van truck. Both the 820 kg and the 8000 kg tests were within the limits of NCHRP Report 350 guidelines.
Author: Dean C. Alberson
Publisher:
ISBN:
Category : Bridge railings
Languages : en
Pages : 69
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Book Description
