The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform
Jhenifer Mesquita De Araujo - One of the best experts on this subject based on the ideXlab platform.
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Characterizing Bridge Functional Obsolescence Using Congestion Performance Measures Determined from Anonymous Probe-Vehicle Data
Journal of Performance of Constructed Facilities, 2016Co-Authors: Andrew J Bechtel, Thomas M. Brennan, Jhenifer Mesquita De AraujoAbstract:AbstractIn the last few years, anonymous probe-vehicle data has become a reliable means to evaluate travel time reliability, as well as congestion conditions along highways and major arterials. The data is collected using telematics from commercial and private cellular phones, global positioning system (GPS) devices, and onboard vehicle computers. The probe-vehicle data is commercially available in 1 min increments along spatially defined roadway segments of varying lengths. This data is being incorporated into local and statewide reports to measure congestion conditions of highway and arterial systems. This paper uses crowd-sourced anonymous probe-vehicle data to evaluate congestion duration at Functionally Obsolete Bridge structures. The Bridges selected were Functionally Obsolete due to poor ratings in their deck geometry as defined by the National Bridge Inventory (NBI) rating system. These deficiencies are based on a Bridge’s traffic capacity as a function of its geometry and the average daily traffi...
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Characterizing Bridge Functional Obsolescence Using Congestion Performance Measures Determined from Anonymous Probe Vehicle Data
2015Co-Authors: Andrew J Bechtel, Thomas M. Brennan, Jhenifer Mesquita De AraujoAbstract:In the last few years, anonymous probe vehicle data has become a reliable means to evaluate travel time reliability, as well as congestion conditions along highways and major arterials. The data is collected using telematics from commercial and private cellular phones, global positioning system (GPS) devices, and on-board vehicle computers. The probe vehicle data is commercially available in one-minute increments along spatially defined roadway segments of varying lengths. This data is being incorporated into local and statewide reports to measure congestion conditions of highway and arterial systems. This paper uses crowd sourced anonymous probe vehicle data to evaluate congestion duration at Functionally Obsolete Bridge structures. The Bridges selected were Functionally Obsolete due to poor ratings in their deck geometry. as defined by National Bridge Inventory (NBI) rating system. These deficiencies are based on a Bridge’s traffic capacity as a function of its geometry and the Average Daily Traffic (ADT). These conditions are directly expected to impact the speed and volume of traffic crossing over the Bridge causing congestion. An evaluation of the travel times at Bridge locations was conducted to determine if a measurable amount of congestion could be observed using probe vehicle data. The methodologies presented in this paper were applied to 37 Bridge structures in Burlington County, New Jersey. Approximately 35 million speed data records were analyzed for the 37 Bridges to measure congestion. The congestion performance measures were compared to the NBI rating to determine if congestion existed at the Bridges as predicted by the NBI system. The comparison showed that a poor rating in deck geometry from the NBI system was not a strong indicator of congestion. The congestion evaluation methodologies presented in this paper were then combined with existing NBI structural ratings to demonstrate alternative Bridge management strategies.
Andrew J Bechtel - One of the best experts on this subject based on the ideXlab platform.
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Characterizing Bridge Functional Obsolescence Using Congestion Performance Measures Determined from Anonymous Probe-Vehicle Data
Journal of Performance of Constructed Facilities, 2016Co-Authors: Andrew J Bechtel, Thomas M. Brennan, Jhenifer Mesquita De AraujoAbstract:AbstractIn the last few years, anonymous probe-vehicle data has become a reliable means to evaluate travel time reliability, as well as congestion conditions along highways and major arterials. The data is collected using telematics from commercial and private cellular phones, global positioning system (GPS) devices, and onboard vehicle computers. The probe-vehicle data is commercially available in 1 min increments along spatially defined roadway segments of varying lengths. This data is being incorporated into local and statewide reports to measure congestion conditions of highway and arterial systems. This paper uses crowd-sourced anonymous probe-vehicle data to evaluate congestion duration at Functionally Obsolete Bridge structures. The Bridges selected were Functionally Obsolete due to poor ratings in their deck geometry as defined by the National Bridge Inventory (NBI) rating system. These deficiencies are based on a Bridge’s traffic capacity as a function of its geometry and the average daily traffi...
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Characterizing Bridge Functional Obsolescence Using Congestion Performance Measures Determined from Anonymous Probe Vehicle Data
2015Co-Authors: Andrew J Bechtel, Thomas M. Brennan, Jhenifer Mesquita De AraujoAbstract:In the last few years, anonymous probe vehicle data has become a reliable means to evaluate travel time reliability, as well as congestion conditions along highways and major arterials. The data is collected using telematics from commercial and private cellular phones, global positioning system (GPS) devices, and on-board vehicle computers. The probe vehicle data is commercially available in one-minute increments along spatially defined roadway segments of varying lengths. This data is being incorporated into local and statewide reports to measure congestion conditions of highway and arterial systems. This paper uses crowd sourced anonymous probe vehicle data to evaluate congestion duration at Functionally Obsolete Bridge structures. The Bridges selected were Functionally Obsolete due to poor ratings in their deck geometry. as defined by National Bridge Inventory (NBI) rating system. These deficiencies are based on a Bridge’s traffic capacity as a function of its geometry and the Average Daily Traffic (ADT). These conditions are directly expected to impact the speed and volume of traffic crossing over the Bridge causing congestion. An evaluation of the travel times at Bridge locations was conducted to determine if a measurable amount of congestion could be observed using probe vehicle data. The methodologies presented in this paper were applied to 37 Bridge structures in Burlington County, New Jersey. Approximately 35 million speed data records were analyzed for the 37 Bridges to measure congestion. The congestion performance measures were compared to the NBI rating to determine if congestion existed at the Bridges as predicted by the NBI system. The comparison showed that a poor rating in deck geometry from the NBI system was not a strong indicator of congestion. The congestion evaluation methodologies presented in this paper were then combined with existing NBI structural ratings to demonstrate alternative Bridge management strategies.
Thomas M. Brennan - One of the best experts on this subject based on the ideXlab platform.
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Characterizing Bridge Functional Obsolescence Using Congestion Performance Measures Determined from Anonymous Probe-Vehicle Data
Journal of Performance of Constructed Facilities, 2016Co-Authors: Andrew J Bechtel, Thomas M. Brennan, Jhenifer Mesquita De AraujoAbstract:AbstractIn the last few years, anonymous probe-vehicle data has become a reliable means to evaluate travel time reliability, as well as congestion conditions along highways and major arterials. The data is collected using telematics from commercial and private cellular phones, global positioning system (GPS) devices, and onboard vehicle computers. The probe-vehicle data is commercially available in 1 min increments along spatially defined roadway segments of varying lengths. This data is being incorporated into local and statewide reports to measure congestion conditions of highway and arterial systems. This paper uses crowd-sourced anonymous probe-vehicle data to evaluate congestion duration at Functionally Obsolete Bridge structures. The Bridges selected were Functionally Obsolete due to poor ratings in their deck geometry as defined by the National Bridge Inventory (NBI) rating system. These deficiencies are based on a Bridge’s traffic capacity as a function of its geometry and the average daily traffi...
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Characterizing Bridge Functional Obsolescence Using Congestion Performance Measures Determined from Anonymous Probe Vehicle Data
2015Co-Authors: Andrew J Bechtel, Thomas M. Brennan, Jhenifer Mesquita De AraujoAbstract:In the last few years, anonymous probe vehicle data has become a reliable means to evaluate travel time reliability, as well as congestion conditions along highways and major arterials. The data is collected using telematics from commercial and private cellular phones, global positioning system (GPS) devices, and on-board vehicle computers. The probe vehicle data is commercially available in one-minute increments along spatially defined roadway segments of varying lengths. This data is being incorporated into local and statewide reports to measure congestion conditions of highway and arterial systems. This paper uses crowd sourced anonymous probe vehicle data to evaluate congestion duration at Functionally Obsolete Bridge structures. The Bridges selected were Functionally Obsolete due to poor ratings in their deck geometry. as defined by National Bridge Inventory (NBI) rating system. These deficiencies are based on a Bridge’s traffic capacity as a function of its geometry and the Average Daily Traffic (ADT). These conditions are directly expected to impact the speed and volume of traffic crossing over the Bridge causing congestion. An evaluation of the travel times at Bridge locations was conducted to determine if a measurable amount of congestion could be observed using probe vehicle data. The methodologies presented in this paper were applied to 37 Bridge structures in Burlington County, New Jersey. Approximately 35 million speed data records were analyzed for the 37 Bridges to measure congestion. The congestion performance measures were compared to the NBI rating to determine if congestion existed at the Bridges as predicted by the NBI system. The comparison showed that a poor rating in deck geometry from the NBI system was not a strong indicator of congestion. The congestion evaluation methodologies presented in this paper were then combined with existing NBI structural ratings to demonstrate alternative Bridge management strategies.
Gary R. Consolazio - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of damage to Bridge piers using pulse velocity tomography
Construction and Building Materials, 2012Co-Authors: Christopher C. Ferraro, Andrew J. Boyd, Gary R. ConsolazioAbstract:Abstract Due to the significant expenses involved in the fabrication of very large scale elements, the nondestructive investigation of impact damage in full-scale concrete structures and structural components is an area of research severely lacking in experimental data. The work presented herein represents a unique perspective into this critical area by describing the evaluation of full-scale impact damage with respect to the structures undamaged state. The replacement of a Functionally Obsolete Bridge created a unique opportunity to conduct full-scale barge impact tests on the structure before demolition. Repeated impact testing was performed on two of the Bridge piers. Ultrasonic pulse velocity tomography was used to assess the integrity of the structure before and after impact. The induced damage, the response of the Bridge structure, and the viability of using ultrasonic pulse velocity testing for the investigation of impact damage in concrete structures were assessed.
D E Beck - One of the best experts on this subject based on the ideXlab platform.
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VALUE ENGINEERING: A VALUABLE ALTERNATIVE TO COST CUTTING
2000Co-Authors: D E BeckAbstract:Most engineering and construction projects involve an inherent, but often unrealized, quest for value. A program's best chance for success depends upon creating a favorable relationship between performance and cost, and all value-related factors are important concerns. With cost reduction, the focus is on finding ways of reducing the cost of items. With value engineering (VE), the focus is on searching for alternatives to satisfy functions more economically. A VE study is conducted in a highly structured environment involving a team of selected individuals and a trained leader. The owner must be willing to accept challenges to the paradigm and agree to break with standard practice if warranted. Although VE has a lengthy and impressive record of success, those closely involved with the program feel that it remains underutilized. This deficit is attributed to a lack of awareness because of scarcity of academic offerings on the subject, confusion about the differences between VE and other quality control or cost improvement systems, and changes in management philosophies. Case studies illustrating the viability and versatility of VE are discussed: reconstruction of State Route 8 by the Ohio Department of Transportation; construction of a 1,200-ft Bridge across the St. Joseph River in Niles, Michigan; and replacement of a low-level, Functionally Obsolete Bridge crossing the St. Lucie River in Stuart, Florida, with a new, high-level Bridge.
