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Search returned 27 reports containing keyword: 'pavement management'
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| Li,J. | WA-RD 588.2 | PCCP Models for Rehabilitation and Reconstruction Decision-Making | 2005 | TRAC/UW |
Abstract:
The majority of the Washington State Department of Transportation (WSDOT) portland cement concrete (PCC) pavements have far exceeded their original design lives and have carried several times the traffic loading originally anticipated. WSDOT is undertaking a major effort to identify both rehabilitation and reconstruction projects to improve its PCC pavements. This project was performed to estimate WSDOT's concrete pavement performance. The current PCC pavement conditions were thoroughly analyzed. Two major groups of concrete pavement deterioration models were systematically studied: HDM-4 and NCHRP 1-37A. NCHRP 1-37A models proved to be more suitable for WSDOT conditions. The calibrated faulting and roughness models are able to present the typical performance of WSDOT PCC pavements. These models can be used to assist WSDOT in developing a plan for rehabilitating or reconstructing these pavements.
Authors:
Li,J., Muench,S. T., Mahoney,J. P., Pierce,L., Sivaneswaran,N.
Keywords:
Pavement management, pavement performance, pavement deterioration models, dowel bar retrofit, WSPMS, HDM-4, NCHRP 1-37A, roughness, spalling, transverse cracking, longitudinal cracking, faulting
The majority of the Washington State Department of Transportation (WSDOT) portland cement concrete (PCC) pavements have far exceeded their original design lives and have carried several times the traffic loading originally anticipated. WSDOT is undertaking a major effort to identify both rehabilitation and reconstruction projects to improve its PCC pavements. This project was performed to estimate WSDOT's concrete pavement performance. The current PCC pavement conditions were thoroughly analyzed. Two major groups of concrete pavement deterioration models were systematically studied: HDM-4 and NCHRP 1-37A. NCHRP 1-37A models proved to be more suitable for WSDOT conditions. The calibrated faulting and roughness models are able to present the typical performance of WSDOT PCC pavements. These models can be used to assist WSDOT in developing a plan for rehabilitating or reconstructing these pavements.
Authors:
Li,J., Muench,S. T., Mahoney,J. P., Pierce,L., Sivaneswaran,N.
Keywords:
Pavement management, pavement performance, pavement deterioration models, dowel bar retrofit, WSPMS, HDM-4, NCHRP 1-37A, roughness, spalling, transverse cracking, longitudinal cracking, faulting
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| Li,J. | WA-RD 588.1 | Application of HDM-4 in the WSDOT Highway System | 2004 | TRAC/UW |
Abstract:
This project performed extensive study and systematic research on the application of the Highway Development and Management system (HDM-4) to the Washington State Department of Transportation (WSDOT) highway system. Data processing, testing, calibration, and analysis were executed to provide the WSDOT with a new budget planning tool. HDM-4 flexible pavement deterioration models were calibrated with the assistance of the Washington State Pavement Management System. A method to calibrate concrete pavement distress models is proposed. This research also explored the application of HDM-4 analysis at the project, program, and strategic levels. The applications include prediction of pavement conditions during a defined analysis period, calculation of required budgets for optimal pavement conditions and maximum economic indicators, establishment of optimized work programs under varying levels of constrained budgets, and other applications for WSDOT.
Authors:
Li,J., Muench,S. T., Mahoney,J. P., Pierce,L., Sivaneswaran,N.
Keywords:
HDM-4, models, pavement maintenance, pavement management, pavement performance, Pavement preservation, vehicle operating costs, research, highway, development, management, management system, Washington, Washington state, transportation, WSDOT, data, calibration, analysis, planning, pavement, deterioration, concrete, program, applications, prediction, condition, indicators
This project performed extensive study and systematic research on the application of the Highway Development and Management system (HDM-4) to the Washington State Department of Transportation (WSDOT) highway system. Data processing, testing, calibration, and analysis were executed to provide the WSDOT with a new budget planning tool. HDM-4 flexible pavement deterioration models were calibrated with the assistance of the Washington State Pavement Management System. A method to calibrate concrete pavement distress models is proposed. This research also explored the application of HDM-4 analysis at the project, program, and strategic levels. The applications include prediction of pavement conditions during a defined analysis period, calculation of required budgets for optimal pavement conditions and maximum economic indicators, establishment of optimized work programs under varying levels of constrained budgets, and other applications for WSDOT.
Authors:
Li,J., Muench,S. T., Mahoney,J. P., Pierce,L., Sivaneswaran,N.
Keywords:
HDM-4, models, pavement maintenance, pavement management, pavement performance, Pavement preservation, vehicle operating costs, research, highway, development, management, management system, Washington, Washington state, transportation, WSDOT, data, calibration, analysis, planning, pavement, deterioration, concrete, program, applications, prediction, condition, indicators
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http://www.wsdot.wa.gov/research/reports/fullreports/588.1.pdf http://wsdot.wa.gov/Research/Reports/500/588.1.htm |
| Baker,M. J. | WA-RD 437.1 | Identification And Assessment Of Superior And Inferior Performing WSDOT Pavements | 2000 |
Abstract:
The Washington State Pavement Management System (WSPMS) offers an organized methodology that WSDOT decision makers use to determine optimum strategies for providing and maintaining pavements in a serviceable condition over a given period of time. It also helps improve decision-making efficiency, provide feedback on the consequences of decisions, and ensure the consistency of decisions made at different management levels within WSDOT. Unfortunately, it is not possible, by simply scanning the WSPMS, to pinpoint reasons why pavement sections made of the same general surface materials and subjected to similar traffic and climatic conditions differ in performance. What the WSPMS can do is assist engineers in developing a candidate list of pavement sections with superior and inferior performance. Common characteristics that linkmultiple pavement sections are of particular interest, in part because they may reflect a common practice(e-g., nighttime construction) that leads to superior or inferior performance.This study undertook various extensive analyses and comparisons to help illustrate common attributes of Washington state pavements with superior and inferior performance. The research also reviewed field performance data for Interstate 90 within the 1999 version of the WSPMS. The purpose was to examine all pavement segments on the 480 km of Interstate 90 within Washington state.Reducing variability will allow WSDOT to produce more consistent pavement performance and will allow increasingly effective planning and forecasting. An almost certain byproduct of this increased planning effectiveness will be a more efficient allocation of available funding.
Authors:
Baker,M. J., Mahoney,J. P.
Keywords:
Assessment, condition, construction, data, effectiveness, forecasting, management, management system, materials, methodology, pavement, pavement management, pavement performance, pavement section, pavements, performance, planning, research, superior inferior, System, traffic, Washington, Washington state, WSDOT
The Washington State Pavement Management System (WSPMS) offers an organized methodology that WSDOT decision makers use to determine optimum strategies for providing and maintaining pavements in a serviceable condition over a given period of time. It also helps improve decision-making efficiency, provide feedback on the consequences of decisions, and ensure the consistency of decisions made at different management levels within WSDOT. Unfortunately, it is not possible, by simply scanning the WSPMS, to pinpoint reasons why pavement sections made of the same general surface materials and subjected to similar traffic and climatic conditions differ in performance. What the WSPMS can do is assist engineers in developing a candidate list of pavement sections with superior and inferior performance. Common characteristics that linkmultiple pavement sections are of particular interest, in part because they may reflect a common practice(e-g., nighttime construction) that leads to superior or inferior performance.This study undertook various extensive analyses and comparisons to help illustrate common attributes of Washington state pavements with superior and inferior performance. The research also reviewed field performance data for Interstate 90 within the 1999 version of the WSPMS. The purpose was to examine all pavement segments on the 480 km of Interstate 90 within Washington state.Reducing variability will allow WSDOT to produce more consistent pavement performance and will allow increasingly effective planning and forecasting. An almost certain byproduct of this increased planning effectiveness will be a more efficient allocation of available funding.
Authors:
Baker,M. J., Mahoney,J. P.
Keywords:
Assessment, condition, construction, data, effectiveness, forecasting, management, management system, materials, methodology, pavement, pavement management, pavement performance, pavement section, pavements, performance, planning, research, superior inferior, System, traffic, Washington, Washington state, WSDOT
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| Mahoney,J. P. | WA-RD 335.1 | WSDOT Pavement Guide--Volume 2 | 1995 |
Abstract:
This guide has been prepared for WSDOT personnel in designing, constructing and maintaining pavement structures. Volume 2 (Pavement Notes) contains 11 sections and is used to provide an overview of information important in designing pavement structures. Such information is intended to provide insight into the pavement design, evaluation, and rehabilitation process.
Authors:
Mahoney,J. P.
Keywords:
pavement management
This guide has been prepared for WSDOT personnel in designing, constructing and maintaining pavement structures. Volume 2 (Pavement Notes) contains 11 sections and is used to provide an overview of information important in designing pavement structures. Such information is intended to provide insight into the pavement design, evaluation, and rehabilitation process.
Authors:
Mahoney,J. P.
Keywords:
pavement management
| Mahoney,J. P. | WA-RD 274.1 | The WSDOT Pavement Management System - A 1993 Update | 1993 |
Abstract:
This first report documents some of the more fundamental features of the Washington State Pavement Management System (WSPMS). Included is an overview of Pavement management principals. Recent additions to the WSPMS include the rehabilitation scoping technique and revised pavement rating scores. These are documented in the report.
Authors:
Mahoney,J. P., Kay,R. K., Jackson,N. C.
Keywords:
pavement, pavement management, performance, pavement policy
This first report documents some of the more fundamental features of the Washington State Pavement Management System (WSPMS). Included is an overview of Pavement management principals. Recent additions to the WSPMS include the rehabilitation scoping technique and revised pavement rating scores. These are documented in the report.
Authors:
Mahoney,J. P., Kay,R. K., Jackson,N. C.
Keywords:
pavement, pavement management, performance, pavement policy
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| Mahoney,J. P. | WA-RD 335.1 | WSDOT Pavement Guide--Volume I | 1993 |
Abstract:
This guide has been prepared for WSDOT personnal in designing, constructing, and maintaining pavement structures. Volume 1 is divided into two parts: Part I includes policy statements on pavement design and rehabilitation and Part II a set of notes which provide background information on pavement design, construction, performance, rehabilitation, and maintenance. Volume 2 contains computer user guides and case studies pavement.
Authors:
Mahoney,J. P.
Keywords:
pavement management
This guide has been prepared for WSDOT personnal in designing, constructing, and maintaining pavement structures. Volume 1 is divided into two parts: Part I includes policy statements on pavement design and rehabilitation and Part II a set of notes which provide background information on pavement design, construction, performance, rehabilitation, and maintenance. Volume 2 contains computer user guides and case studies pavement.
Authors:
Mahoney,J. P.
Keywords:
pavement management
| Mahoney,J. P. | WA-RD 170.2 | An Overview of Recent WSDOT Pavement Design Research and Implementation Efforts | 1992 |
Abstract:
This report overviews the current status of s of WSDOT pavement design procedures, analyses, and 'manuals' that have culminated with the study entitled 'ACP Overlay Design Implementation.
Authors:
Mahoney,J. P., Jackson,N. C., Pierce,L. M., Anderson,K. W.
Keywords:
pavement management, pavement design
This report overviews the current status of s of WSDOT pavement design procedures, analyses, and 'manuals' that have culminated with the study entitled 'ACP Overlay Design Implementation.
Authors:
Mahoney,J. P., Jackson,N. C., Pierce,L. M., Anderson,K. W.
Keywords:
pavement management, pavement design
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| Kilian,A. P. | WA-RD 239.1 | Long-Term Performance Evaluation of Wood Fibre Fills | 1992 |
Abstract:
This paper presents the results of a research project to determine the long-term performance of wood fibre embankments, that were constructed by the Washington State Department of Transportation (WSDOT) beginning in 1972. At the time of their construction, concern existed that wood fibre fills would only provide a 15 to 20 year service life.Performance of existing wood fibre fills was evaluated based on thequality of the wood fibre material, quality of the effluent, and condition ofthe pavement. A visual classification system rating the wood fibre from freshto completely decomposed was developed and used in order to establish acriteria from which all wood fibre mater.ia1 could be -rated.. Visual examinationin conjunction with laboratory tests were used as determining aspects for theeffluent quality. The WSDOT Pavement Management System was used to evaluate relative pavement performance. Site descriptions are presented giving specificcharacteristics and properties of the fills inventoried, An analysis of t h i sinformation was done to determine the effectiveness of the fills.Over half the wood fibre samples were found to be nearly fresh or freshand none w e found to be completely decomposed. In all but one case, thepavement quality over the wood fibre fills surpassed the comparative highwaysegment rating indicating the wood fill\'s performance exceeded thatof the surrounding area. Generally, the surface water in the vicinity of thewood fibre was found to be clean and pure indicating no adverse impact ofeffluent. Given the above findings, embankments constructed of wood fibre werefound to perform well over ahnost a 20. year period. Service life in excess of50 years can be expected - of wood fibre fills.
Authors:
Kilian,A. P., Ferry,C. D.
Keywords:
analysis, condition, construction, developed, effectiveness, Embankments, evaluation, impact, Leachate, management, management system, pavement, pavement management, pavement performance, pavements, performance, performance evaluation, project, quality, research, tests, transportation, Washington, Washington state, Wood fibre, WSDOT
This paper presents the results of a research project to determine the long-term performance of wood fibre embankments, that were constructed by the Washington State Department of Transportation (WSDOT) beginning in 1972. At the time of their construction, concern existed that wood fibre fills would only provide a 15 to 20 year service life.Performance of existing wood fibre fills was evaluated based on thequality of the wood fibre material, quality of the effluent, and condition ofthe pavement. A visual classification system rating the wood fibre from freshto completely decomposed was developed and used in order to establish acriteria from which all wood fibre mater.ia1 could be -rated.. Visual examinationin conjunction with laboratory tests were used as determining aspects for theeffluent quality. The WSDOT Pavement Management System was used to evaluate relative pavement performance. Site descriptions are presented giving specificcharacteristics and properties of the fills inventoried, An analysis of t h i sinformation was done to determine the effectiveness of the fills.Over half the wood fibre samples were found to be nearly fresh or freshand none w e found to be completely decomposed. In all but one case, thepavement quality over the wood fibre fills surpassed the comparative highwaysegment rating indicating the wood fill\'s performance exceeded thatof the surrounding area. Generally, the surface water in the vicinity of thewood fibre was found to be clean and pure indicating no adverse impact ofeffluent. Given the above findings, embankments constructed of wood fibre werefound to perform well over ahnost a 20. year period. Service life in excess of50 years can be expected - of wood fibre fills.
Authors:
Kilian,A. P., Ferry,C. D.
Keywords:
analysis, condition, construction, developed, effectiveness, Embankments, evaluation, impact, Leachate, management, management system, pavement, pavement management, pavement performance, pavements, performance, performance evaluation, project, quality, research, tests, transportation, Washington, Washington state, Wood fibre, WSDOT
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| Mahoney,J. P. | WA-RD 169.1 | The Evaluation of the Expert System for Pavement Evaluation and Rehabilitation (EXPEAR) in Washington State | 1989 |
Abstract:
The Expert system for Pavement Evaluation and Rehabilitation (EXPEAR) is an advisory system to assist the practicing engineer in evaluating a specific pavement section and selecting pavement rehabilitation alternatives. The objectives of this study were both to evaluate EXPEAR by using Washington state project data to determine the reasonableness of the program's output in comparison to WSDOT's current procedures, and to identify any existing program 'bugs' and/or desirable program enhancements. To evaluate EXPEAR program output, pavement design and condition data were entered from four test sections in Washington. After the pavement data were input, the EXPEAR output results were reviewed subjectively for reasonableness and compared to the state's current procedures for determining appropriate rehabilitation. Although EXPEAR offers several positive attributes, this study found problems with its output. For example, the transverse cracking model predicted cracking that was more severe than WSDOT has observed. Often EXPEAR predicted distress trends that were not reasonable. Also, a test of the risk of the different rehabilitation options appeared to be missing from the program. The researchers concluded that the high level of effort in creating EXPEAR is commendable and that a system of this type can be a useful tool not only for pavement design but also as a scoping and planning tool for pavement rehabilitation. However, WSDOT will probably not use EXPEAR in its present form because the performance predictions of both existing pavements and rehabilitation strategies were generally inconsistent with what has been observed in Washington.
Authors:
Mahoney,J. P., Simmons,H. A., Pierce,L. M., Jackson,N. C.
Keywords:
pavement management, expert system, pavement, rehabilitation, portland cement concrete
The Expert system for Pavement Evaluation and Rehabilitation (EXPEAR) is an advisory system to assist the practicing engineer in evaluating a specific pavement section and selecting pavement rehabilitation alternatives. The objectives of this study were both to evaluate EXPEAR by using Washington state project data to determine the reasonableness of the program's output in comparison to WSDOT's current procedures, and to identify any existing program 'bugs' and/or desirable program enhancements. To evaluate EXPEAR program output, pavement design and condition data were entered from four test sections in Washington. After the pavement data were input, the EXPEAR output results were reviewed subjectively for reasonableness and compared to the state's current procedures for determining appropriate rehabilitation. Although EXPEAR offers several positive attributes, this study found problems with its output. For example, the transverse cracking model predicted cracking that was more severe than WSDOT has observed. Often EXPEAR predicted distress trends that were not reasonable. Also, a test of the risk of the different rehabilitation options appeared to be missing from the program. The researchers concluded that the high level of effort in creating EXPEAR is commendable and that a system of this type can be a useful tool not only for pavement design but also as a scoping and planning tool for pavement rehabilitation. However, WSDOT will probably not use EXPEAR in its present form because the performance predictions of both existing pavements and rehabilitation strategies were generally inconsistent with what has been observed in Washington.
Authors:
Mahoney,J. P., Simmons,H. A., Pierce,L. M., Jackson,N. C.
Keywords:
pavement management, expert system, pavement, rehabilitation, portland cement concrete
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| Mahoney,J. P. | WA-RD 170.1 | Mechanistic-Based Overlay Design Procedure For Washington State Flexible Pavements | 1989 |
Abstract:
The report study was used to develop an overlay design procedure for Washington state's flexible pavements based on mechanistic pavement analysis. This design procedure incorporates nondestructive testing (NDT) to estimate layer resilient moduli, seasonal moduli adjustments and failure criteria of asphalt concrete fatigue cracking and subgrade rutting. All necessary computations can be done with two primary microcomputer oriented software packages: EVERCALC to estimate layer moduli from NDT data and EVERPAVE or estimate the needed overlay thicknesses.
Authors:
Mahoney,J. P., Lee,S. W., Jackson,N. C., Newcomb,D. E.
Keywords:
pavement management, pavement, overlay, mechanistic, resilient modulus, failure criteria, seasonal variation
The report study was used to develop an overlay design procedure for Washington state's flexible pavements based on mechanistic pavement analysis. This design procedure incorporates nondestructive testing (NDT) to estimate layer resilient moduli, seasonal moduli adjustments and failure criteria of asphalt concrete fatigue cracking and subgrade rutting. All necessary computations can be done with two primary microcomputer oriented software packages: EVERCALC to estimate layer moduli from NDT data and EVERPAVE or estimate the needed overlay thicknesses.
Authors:
Mahoney,J. P., Lee,S. W., Jackson,N. C., Newcomb,D. E.
Keywords:
pavement management, pavement, overlay, mechanistic, resilient modulus, failure criteria, seasonal variation
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| Babaei,K. | WA-RD 168.3 | Bending/Straightening and Grouting Concrete Reinforcing Steel: Review of Washington State Department of Transportation's... | 1988 |
Abstract:
This report consists of two volumes. The first volume reviews the WSDOT's specification guidelines for field bending/straightening concrete reinforcing bars, and proposes modifications to those guidelines based on current knowledge. The second volume reviews the WSDOT's specification guidelines for resin grouting epoxy-coated concrete reinforcing bars, and suggests modifications to the guidelines for grouting based on the available information. The recommendations for bending/straightening reinforcing bars involves bar diameter, bend diameter, heating temperature (hot-bending), and use of non-strain aging steel. The recommendations for resin grouting reinforcing bars involves embedment length, hole diameter, and type of resin.
Authors:
Babaei,K., Hawkins,N. M.
Keywords:
pavement management, concrete, reinforcing bar, bending, embrittlement, cracking, grouting, embedment length
This report consists of two volumes. The first volume reviews the WSDOT's specification guidelines for field bending/straightening concrete reinforcing bars, and proposes modifications to those guidelines based on current knowledge. The second volume reviews the WSDOT's specification guidelines for resin grouting epoxy-coated concrete reinforcing bars, and suggests modifications to the guidelines for grouting based on the available information. The recommendations for bending/straightening reinforcing bars involves bar diameter, bend diameter, heating temperature (hot-bending), and use of non-strain aging steel. The recommendations for resin grouting reinforcing bars involves embedment length, hole diameter, and type of resin.
Authors:
Babaei,K., Hawkins,N. M.
Keywords:
pavement management, concrete, reinforcing bar, bending, embrittlement, cracking, grouting, embedment length
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| Toney,C. A. | WA-RD 111.1 | National Experimental and Evaluation Program: Washington State\'s Experience | 1987 |
Abstract:
This document presents a summary of Washington State Department of Transportation\\\'s experience with the 28 projects of the National Experimental and Evaluation Program (NEEP).
Authors:
Toney,C. A.
Keywords:
counties, evaluation, experimental, management, management system, microcomputer, NEEP, pavement, pavement management, program, transportation, Washington, Washington state
This document presents a summary of Washington State Department of Transportation\\\'s experience with the 28 projects of the National Experimental and Evaluation Program (NEEP).
Authors:
Toney,C. A.
Keywords:
counties, evaluation, experimental, management, management system, microcomputer, NEEP, pavement, pavement management, program, transportation, Washington, Washington state
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| Janssen,D. | WA-RD 124.1 | Bridge Deck Moisture Measurement | 1987 |
Abstract:
Moisture is a primary contributing factor in the long term durability of bridge decks. Moisture is involved in freeze-thaw problems in portland cement concrete and in corrosion of reinforcing steel. Chloride ions, another factor contributing to corrosion, are normally transported through the concrete bridge deck to the reinforcing steel by moisture.Moisture measurement techniques were examined and one of the methods, Peltier-type psychrometers, was used to measure bridge deck moisture. Measurements were made at depths of 0.5, 1.5, 3.0 and 4.5 - 5.5 in. Both negative and positive moment regions were instrumented. The degree of saturation at the level of the reinforcing steel was found to be about 90 percent, with little variation over the two month period that measurements were taken. Moisture fluctuations could lead to increased migration of chloride ions to the reinforcing steel. Measurement of moisture content distributions before and after wetting a bridge deck could be used as an indicator of corrosion protection provided by overlays.
Authors:
Janssen,D.
Keywords:
pavement management
Moisture is a primary contributing factor in the long term durability of bridge decks. Moisture is involved in freeze-thaw problems in portland cement concrete and in corrosion of reinforcing steel. Chloride ions, another factor contributing to corrosion, are normally transported through the concrete bridge deck to the reinforcing steel by moisture.Moisture measurement techniques were examined and one of the methods, Peltier-type psychrometers, was used to measure bridge deck moisture. Measurements were made at depths of 0.5, 1.5, 3.0 and 4.5 - 5.5 in. Both negative and positive moment regions were instrumented. The degree of saturation at the level of the reinforcing steel was found to be about 90 percent, with little variation over the two month period that measurements were taken. Moisture fluctuations could lead to increased migration of chloride ions to the reinforcing steel. Measurement of moisture content distributions before and after wetting a bridge deck could be used as an indicator of corrosion protection provided by overlays.
Authors:
Janssen,D.
Keywords:
pavement management
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| Mahoney,J. P. | WA-RD 080.2 | Guidelines for Spring Highway Use Restrictions | 1986 |
Abstract:
This report describes a survey of current practice as well as analysis performed to develop guidelines for agencies which need load restrictions during spring thaw periods. The results show for a range of locations in the US and Canada that the average load restriction applied is about 44 percent. The analysis performed in the study tends to confirm that level of load restriction. Further, it was found for the assumed conditions that a minimum load restriction(if any load restriction is needed) is about 20 percent. Load restrictions greater than 60 percent are generally not warranted for the range of cases studied. An air temperature based criterion (Thawing index) was developed which can be used to estimate when to apply and remove load restrictions.
Authors:
Mahoney,J. P., Rutherford,G. S., Hicks,R. G., Rwebangira,T.
Keywords:
pavement management, load restrictions, frost, thaw, tire, axle, spring thaw, thaw weakening, research
This report describes a survey of current practice as well as analysis performed to develop guidelines for agencies which need load restrictions during spring thaw periods. The results show for a range of locations in the US and Canada that the average load restriction applied is about 44 percent. The analysis performed in the study tends to confirm that level of load restriction. Further, it was found for the assumed conditions that a minimum load restriction(if any load restriction is needed) is about 20 percent. Load restrictions greater than 60 percent are generally not warranted for the range of cases studied. An air temperature based criterion (Thawing index) was developed which can be used to estimate when to apply and remove load restrictions.
Authors:
Mahoney,J. P., Rutherford,G. S., Hicks,R. G., Rwebangira,T.
Keywords:
pavement management, load restrictions, frost, thaw, tire, axle, spring thaw, thaw weakening, research
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| Kramer,S. L. | WA-RD 079.1 | Pavement Management System: Demonstration for Washington Counties | 1986 |
Abstract:
The pavement management system developed by the State of Washington was modified to meet the needs of the counties in the State of Washington within the constraints of available data and resources. The modified system, called the Washington County Pavement Management System (WCPMS), was tested for Thurston and Benton counties. Results of this testing show that; (1) The WCPMS can be operated using the existing data in the county road log in combination with collected pavement condition survey data; (2) computer resources are available to most counties to access the State computer to execute the various programs in the WCPMS; and (3) routine usage of the WCPMS for a network of 1000 miles will require a level of effort of about 150 person-days and a computer cost of $1,000.
Authors:
Kramer,S. L., Sivaneswaran,N., Tucker,K., Kulkarni,R. B., Finn,F. N.
Keywords:
bridge, design, hinge, earthquake, evaluation restrainers, pavement management, pavement management systems, counties
The pavement management system developed by the State of Washington was modified to meet the needs of the counties in the State of Washington within the constraints of available data and resources. The modified system, called the Washington County Pavement Management System (WCPMS), was tested for Thurston and Benton counties. Results of this testing show that; (1) The WCPMS can be operated using the existing data in the county road log in combination with collected pavement condition survey data; (2) computer resources are available to most counties to access the State computer to execute the various programs in the WCPMS; and (3) routine usage of the WCPMS for a network of 1000 miles will require a level of effort of about 150 person-days and a computer cost of $1,000.
Authors:
Kramer,S. L., Sivaneswaran,N., Tucker,K., Kulkarni,R. B., Finn,F. N.
Keywords:
bridge, design, hinge, earthquake, evaluation restrainers, pavement management, pavement management systems, counties
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| Christensen,D. R. | WA-RD 108.1 | Microcomputer Conversion of Washington State Pavement Management System for Cities and Counties | 1986 |
Abstract:
Authors:
Christensen,D. R.
Keywords:
pavement management, pavement, computer
Authors:
Christensen,D. R.
Keywords:
pavement management, pavement, computer
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| Mahoney,J. P. | WA-RD 080.1 | Guidelines for Spring Highway Use/Criteria for Highway Load Restrictions: Where, How, Much and When Video | 1985 |
Abstract:
This report describes a survey of current practice as well as analysis performed to develop guidelines for agencies which need load restrictions during spring thaw periods. The results show for a range of locations in the US and Canada that the average load restriction applied is about 44 percent. The analysis performed in the study tends to confirm that level of load restriction. Further, it was found for the assumed conditions that a minimum load restriction(if any load restriction is needed) is about 20 percent. Load restrictions greater than 60 percent are generally not warranted for the range of cases studied. An air temperature based criterion (Thawing index) was developed which can be used to estimate when to apply and remove load restrictions.
Authors:
Mahoney,J. P.
Keywords:
pavement management, load restrictions, frost, thaw, tire, axle, spring thaw, thaw weakening
This report describes a survey of current practice as well as analysis performed to develop guidelines for agencies which need load restrictions during spring thaw periods. The results show for a range of locations in the US and Canada that the average load restriction applied is about 44 percent. The analysis performed in the study tends to confirm that level of load restriction. Further, it was found for the assumed conditions that a minimum load restriction(if any load restriction is needed) is about 20 percent. Load restrictions greater than 60 percent are generally not warranted for the range of cases studied. An air temperature based criterion (Thawing index) was developed which can be used to estimate when to apply and remove load restrictions.
Authors:
Mahoney,J. P.
Keywords:
pavement management, load restrictions, frost, thaw, tire, axle, spring thaw, thaw weakening
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| Christensen,D. R. | WA-RD 077.1 | Computerized Pavement Condition Survey Unit | 1985 |
Abstract:
A computerized field pavement condition survey unit and an IBM PC/XT computer base office reader and analysis system were developed for use in the pavement management program used by WSDOT. The pavement condition recording and computing device is a microprocessor controlled, data acquisition and reduction system which uses a combination of manual inputs and odometer readings to develop pavement condition reports. These reports are printed on the system printer and written to a standard compact magnetic tape cartridge along with the raw data for later inclusion in the Washington State Department of Transportation's pavement management data base. The device, including all of its attendant equipment, is fully portable so that it may be used in any motor vehicle that has an odometer pulse generator (preferably producing approximately 4,000 TTL level counts per mile) and 12 Vdc power source. The office system consists of an IBM PC/XT or AT micrcomputer with a printer and a 20 megabyte cartridge tape drive. It also has the software needed to read preview, analyze and convert the data for direct entry into WSDOT's pavement management system.
Authors:
Christensen,D. R.
Keywords:
traffic surveillance and control, pavement management, automated pavement survey equipment, pavement surface condition survey
A computerized field pavement condition survey unit and an IBM PC/XT computer base office reader and analysis system were developed for use in the pavement management program used by WSDOT. The pavement condition recording and computing device is a microprocessor controlled, data acquisition and reduction system which uses a combination of manual inputs and odometer readings to develop pavement condition reports. These reports are printed on the system printer and written to a standard compact magnetic tape cartridge along with the raw data for later inclusion in the Washington State Department of Transportation's pavement management data base. The device, including all of its attendant equipment, is fully portable so that it may be used in any motor vehicle that has an odometer pulse generator (preferably producing approximately 4,000 TTL level counts per mile) and 12 Vdc power source. The office system consists of an IBM PC/XT or AT micrcomputer with a printer and a 20 megabyte cartridge tape drive. It also has the software needed to read preview, analyze and convert the data for direct entry into WSDOT's pavement management system.
Authors:
Christensen,D. R.
Keywords:
traffic surveillance and control, pavement management, automated pavement survey equipment, pavement surface condition survey
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| Christensen,D. R. | WA-RD 077.2 | Computerized Pavement Condition Survey Unit: Operations & Maintenance Manual | 1985 |
Abstract:
A computerized field pavement condition survey unit and an IBM PC/XT computer base office reader and analysis system were developed for use in the pavement management program used by WSDOT. The pavement condition recording and computing device is a microprocessor controlled, data acquisition and reduction system which uses a combination of manual inputs and odometer readings to develop pavement condition reports. These reports are printed on the system printer and written to a standard compact magnetic tape cartridge along with the raw data for later inclusion in the Washington State Department of Transportation's pavement management data base. The device, including all of its attendant equipment, is fully portable so that it may be used in any motor vehicle that has an odometer pulse generator (preferably producing approximately 4,000 TTL level counts per mile) and 12 Vdc power source. The office system consists of an IBM PC/XT or AT micrcomputer with a printer and a 20 megabyte cartridge tape drive. It also has the software needed to read preview, analyze and convert the data for direct entry into WSDOT's pavement management system.
Authors:
Christensen,D. R.
Keywords:
traffic surveillance and control, pavement management, automated pavement survey equipment, pavement surface condition survey
A computerized field pavement condition survey unit and an IBM PC/XT computer base office reader and analysis system were developed for use in the pavement management program used by WSDOT. The pavement condition recording and computing device is a microprocessor controlled, data acquisition and reduction system which uses a combination of manual inputs and odometer readings to develop pavement condition reports. These reports are printed on the system printer and written to a standard compact magnetic tape cartridge along with the raw data for later inclusion in the Washington State Department of Transportation's pavement management data base. The device, including all of its attendant equipment, is fully portable so that it may be used in any motor vehicle that has an odometer pulse generator (preferably producing approximately 4,000 TTL level counts per mile) and 12 Vdc power source. The office system consists of an IBM PC/XT or AT micrcomputer with a printer and a 20 megabyte cartridge tape drive. It also has the software needed to read preview, analyze and convert the data for direct entry into WSDOT's pavement management system.
Authors:
Christensen,D. R.
Keywords:
traffic surveillance and control, pavement management, automated pavement survey equipment, pavement surface condition survey
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| Christensen,D. R. | WA-RD 078.1 | Pavement Test Track Instrumentation System Documentation | 1985 |
Abstract:
Several pieces of electronic hardware, obtained through previous test efforts have been assembled for laboratory and field use. The equipment consists of two instrument racks. The first contains five Bison inductance type soil strain gage instruments and the associated phase and amplitude controls and solid state switching hardware for switching these controls between measurement test sections. The second rack contains switch hardware for switching the actual iron leads for the individual inductance coils associated with the sixteen section. It also contains the necessary data acquisition and analysis hardware.
Authors:
Christensen,D. R.
Keywords:
pavement management, automated pavement survey equipment, pavement surface condition survey, manual
Several pieces of electronic hardware, obtained through previous test efforts have been assembled for laboratory and field use. The equipment consists of two instrument racks. The first contains five Bison inductance type soil strain gage instruments and the associated phase and amplitude controls and solid state switching hardware for switching these controls between measurement test sections. The second rack contains switch hardware for switching the actual iron leads for the individual inductance coils associated with the sixteen section. It also contains the necessary data acquisition and analysis hardware.
Authors:
Christensen,D. R.
Keywords:
pavement management, automated pavement survey equipment, pavement surface condition survey, manual
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| Christensen,D. R. | WA-RD 078.2 | Pavement Test Track Instrumentation System - Operations & Maintenance Manual | 1985 |
Abstract:
Several pieces of electronic hardware, obtained through previous test efforts have been assembled for laboratory and field use. The equipment consists of two instrument racks. The first contains five Bison inductance type soil strain gage instruments and the associated phase and amplitude controls and solid state switching hardware for switching these controls between measurement test sections. The second rack contains switch hardware for switching the actual iron leads for the individual inductance coils associated with the sixteen section. It also contains the necessary data acquisition and analysis hardware.
Authors:
Christensen,D. R.
Keywords:
pavement management, automated pavement survey equipment, pavement surface condition survey
Several pieces of electronic hardware, obtained through previous test efforts have been assembled for laboratory and field use. The equipment consists of two instrument racks. The first contains five Bison inductance type soil strain gage instruments and the associated phase and amplitude controls and solid state switching hardware for switching these controls between measurement test sections. The second rack contains switch hardware for switching the actual iron leads for the individual inductance coils associated with the sixteen section. It also contains the necessary data acquisition and analysis hardware.
Authors:
Christensen,D. R.
Keywords:
pavement management, automated pavement survey equipment, pavement surface condition survey
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| Mahoney,J. P. | WA-RD 059.2 | Evaluation of Present Legislation & Regulations on Tire Size, Configurations & Load Limits: Executive Summary | 1984 |
Abstract:
This report describes the techniques used to evaluate the effects of various axle configurations with dual and single tires on pavement performance and the current State of Washington Regulation RCW 46.44.042. Equivalent wheel load factors were developed for various widths of single tires on both rigid and flexible pavements. Single tires with widths 10 to 18 inches were analyzed and it was found that by equivalent axle loads the predicted damage to pavements was greater for axles with single tires that those with dual tires. To verify the theoretical analyses, two field experiments were conducted. First, extensometers were placed in the outer wheel path of the pavement ramp at the Fife I-5 weigh station. Truck induced pavement surface deflections were measured after the vehicles were weighed on the scale. A comparison of measured and calculated deflections revealed good agreement thus in part verifying the theoretically based calculations. Second, a field site near Edmondton, Alberta was also used in the verification process by use of the WSDOT Falling Weight Deflectometer. Again the theoretical approach was further verified.
Authors:
Mahoney,J. P., Sharma,J.
Keywords:
pavement management, transport, weight, evaluation, regulation, tire
This report describes the techniques used to evaluate the effects of various axle configurations with dual and single tires on pavement performance and the current State of Washington Regulation RCW 46.44.042. Equivalent wheel load factors were developed for various widths of single tires on both rigid and flexible pavements. Single tires with widths 10 to 18 inches were analyzed and it was found that by equivalent axle loads the predicted damage to pavements was greater for axles with single tires that those with dual tires. To verify the theoretical analyses, two field experiments were conducted. First, extensometers were placed in the outer wheel path of the pavement ramp at the Fife I-5 weigh station. Truck induced pavement surface deflections were measured after the vehicles were weighed on the scale. A comparison of measured and calculated deflections revealed good agreement thus in part verifying the theoretically based calculations. Second, a field site near Edmondton, Alberta was also used in the verification process by use of the WSDOT Falling Weight Deflectometer. Again the theoretical approach was further verified.
Authors:
Mahoney,J. P., Sharma,J.
Keywords:
pavement management, transport, weight, evaluation, regulation, tire
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| Kulkarni,R. B. | WA-RD 062.1 | Feasibility Study of a Pavement Management System for Washington Counties | 1984 |
Abstract:
The feasibility of adopting the Washington State Pavement Management System(WSPMS) for use by Washington counties was established. The WSPMS designoffers a great deal of flexibility for adjusting the system to satisfy thecounties needs. Some modifications to computer programs will be necessaryand can be accomplished with relatively modest effort. The major adjustmentswill be in those counties input data. The only data that are absolutelyessential are those for determining and evaluating pavement condition andthe most cost effective rehabilitation strategies.The state computer system has an adequate storage capacity to support usageof the WSPMS by a large number of counties. Dial-up capability i s availablefor use of WSPMS from remote terminals. Data processing hardware optionsavailable to counties range from no data processing equipment to stand alonecomputer system,A t r i a l demonstration is recommended, Two counties, one large with in-housecomputer f a c i l i t i e s and one small with no or minimal f a c i l i t i e s would bechosen to test the system.Significant. benefits are anticipated from the use of WSPMS. Washingtoncounties desiring to improve the process o f pavement management may findadopting and operating the WSPMS to feasible and desirable.
Authors:
Kulkarni,R. B., Finn,F. N., Lamot,A.
Keywords:
benefit, benefits, computer, computer program, condition, cost, cost effective, counties, data, design, equipment, maintenance, management, management system, Operating, pavement, pavement condition, pavement management, pavement repair, program, rehabilitation, Study, System, Washington, Washington state
The feasibility of adopting the Washington State Pavement Management System(WSPMS) for use by Washington counties was established. The WSPMS designoffers a great deal of flexibility for adjusting the system to satisfy thecounties needs. Some modifications to computer programs will be necessaryand can be accomplished with relatively modest effort. The major adjustmentswill be in those counties input data. The only data that are absolutelyessential are those for determining and evaluating pavement condition andthe most cost effective rehabilitation strategies.The state computer system has an adequate storage capacity to support usageof the WSPMS by a large number of counties. Dial-up capability i s availablefor use of WSPMS from remote terminals. Data processing hardware optionsavailable to counties range from no data processing equipment to stand alonecomputer system,A t r i a l demonstration is recommended, Two counties, one large with in-housecomputer f a c i l i t i e s and one small with no or minimal f a c i l i t i e s would bechosen to test the system.Significant. benefits are anticipated from the use of WSPMS. Washingtoncounties desiring to improve the process o f pavement management may findadopting and operating the WSPMS to feasible and desirable.
Authors:
Kulkarni,R. B., Finn,F. N., Lamot,A.
Keywords:
benefit, benefits, computer, computer program, condition, cost, cost effective, counties, data, design, equipment, maintenance, management, management system, Operating, pavement, pavement condition, pavement management, pavement repair, program, rehabilitation, Study, System, Washington, Washington state
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| Nelson,T. L. | WA-RD 050.3 | Development And Implementation Of Washington State's Pavement System - Executive Summary | 1983 |
Abstract:
This report summarizes the pavement management system developed by WSDOT staff over a period of five years. Included is a description of what the system does in terms of the considerable amount of useful output data produced. A discussion is given on how the system was developed, what the pavement rating procedures involve and cost, what computer requirements are, and what typical data processing costs are. The report concludes with comments on how other agencies can use the Washington State Pavement Management System.
Authors:
Nelson,T. L., LeClerc,R. V.
Keywords:
agencies, computer, cost, costs, data, developed, development, Executive, Executive Summary, management, management system, pavement, pavement data file, pavement management, pavement performance, System, Washington, Washington state, WSDOT
This report summarizes the pavement management system developed by WSDOT staff over a period of five years. Included is a description of what the system does in terms of the considerable amount of useful output data produced. A discussion is given on how the system was developed, what the pavement rating procedures involve and cost, what computer requirements are, and what typical data processing costs are. The report concludes with comments on how other agencies can use the Washington State Pavement Management System.
Authors:
Nelson,T. L., LeClerc,R. V.
Keywords:
agencies, computer, cost, costs, data, developed, development, Executive, Executive Summary, management, management system, pavement, pavement data file, pavement management, pavement performance, System, Washington, Washington state, WSDOT
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| Public Transportation and Planning Division | WA-RD 045.2 | Impacts Of Trucks And Railroad Deregulation On Transportation Operation And Economic Activity In The State Of Washinton ... | 1982 |
Abstract:
The Motor Carrier Act of 1980 and the Staggers Act of 1980 have partially set aside decades of rigid regulations of interstate freight movement. These actions have the potential to bring forth significant changes to the networks of interstate freight transportation. The object of this research was to ascertain the impacts of deregulation of the Washington State transportation system. Information was obtained by surveying and interviewing shippers and freight transportation providers throughout the state. Anticipated impacts, e.g. accelerated rail abandonment or lost of motor carrier service to small communities were not present. The study reflects a relative increase in truck service and decrease in rail service since deregulation. Indications are this may be further amplified in certain regions of the state. The study recommends that potential highway impacts be incorporated into pavement management systems. Transportation officials are enjoined to treat issues relative to truck size and weight, highway cost allocation and deregulation as a single issue. Also, the Local Rail Service Assistance Program should be considered for use to offset any adverse impacts resulting from deregulation. During this period of the study, general economic conditions were poor. This resulted in a decrease in freight shipments and would suggest that some impacts of deregulation have been suppressed.
Authors:
Public Transportation and Planning Division, Washington State Department of Transportation
Keywords:
condition, cost, Deregulation, freight, highway, highway impacts, impact, impacts, management, management system, management systems, motor carrier, networks, pavement, pavement management, pavement management systems, program, rail service, railroads, regulation, research, System, systems, transportation, truck, trucking, trucks, Washington, Washington state, weight
The Motor Carrier Act of 1980 and the Staggers Act of 1980 have partially set aside decades of rigid regulations of interstate freight movement. These actions have the potential to bring forth significant changes to the networks of interstate freight transportation. The object of this research was to ascertain the impacts of deregulation of the Washington State transportation system. Information was obtained by surveying and interviewing shippers and freight transportation providers throughout the state. Anticipated impacts, e.g. accelerated rail abandonment or lost of motor carrier service to small communities were not present. The study reflects a relative increase in truck service and decrease in rail service since deregulation. Indications are this may be further amplified in certain regions of the state. The study recommends that potential highway impacts be incorporated into pavement management systems. Transportation officials are enjoined to treat issues relative to truck size and weight, highway cost allocation and deregulation as a single issue. Also, the Local Rail Service Assistance Program should be considered for use to offset any adverse impacts resulting from deregulation. During this period of the study, general economic conditions were poor. This resulted in a decrease in freight shipments and would suggest that some impacts of deregulation have been suppressed.
Authors:
Public Transportation and Planning Division, Washington State Department of Transportation
Keywords:
condition, cost, Deregulation, freight, highway, highway impacts, impact, impacts, management, management system, management systems, motor carrier, networks, pavement, pavement management, pavement management systems, program, rail service, railroads, regulation, research, System, systems, transportation, truck, trucking, trucks, Washington, Washington state, weight
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| Nelson,Thomas L. | WA-RD 050.1 | Development And Implementation Of Washington State's Pavement System 905 | 1982 |
Abstract:
This report describes the pavement management system developed by WSDOT staff over a period of five years. Both project-level and network-level pavement management are represented within the four broad areas of data processing which combine to constitute the foundation of the system.The design of a pavement data file is laid out together with the process of assembling it. Also shown are the methods used to analyze and convert the file data from pavement condition ratings to pavement performance curves for each project. The performance curves are then used, together with appropriate cost data, to determine the most cost-effective type and time to fix. The network-level program then summarized the need work for each year of a rehabilitation program. Mean are provided for adjusting the program to fit budget constraints or minimum acceptable levels of average pavement condition.It is concluded that the system, operating on biennial pavement condition ratings, provides a good solid framework for orderly analysis to estimate the economic benefits of the type, timing, and sequence of rehabilitation activities applied to a pavement.
Authors:
Nelson,Thomas L., LeClerc,R. V.
Keywords:
analysis, benefit, benefits, condition, cost, data, design, developed, development, foundation, framework, management, management system, methods, Operating, pavement, pavement condition, pavement data file, pavement management, pavement performance, performance, program, project, rehabilitation, System, Washington, Washington state, WSDOT
This report describes the pavement management system developed by WSDOT staff over a period of five years. Both project-level and network-level pavement management are represented within the four broad areas of data processing which combine to constitute the foundation of the system.The design of a pavement data file is laid out together with the process of assembling it. Also shown are the methods used to analyze and convert the file data from pavement condition ratings to pavement performance curves for each project. The performance curves are then used, together with appropriate cost data, to determine the most cost-effective type and time to fix. The network-level program then summarized the need work for each year of a rehabilitation program. Mean are provided for adjusting the program to fit budget constraints or minimum acceptable levels of average pavement condition.It is concluded that the system, operating on biennial pavement condition ratings, provides a good solid framework for orderly analysis to estimate the economic benefits of the type, timing, and sequence of rehabilitation activities applied to a pavement.
Authors:
Nelson,Thomas L., LeClerc,R. V.
Keywords:
analysis, benefit, benefits, condition, cost, data, design, developed, development, foundation, framework, management, management system, methods, Operating, pavement, pavement condition, pavement data file, pavement management, pavement performance, performance, program, project, rehabilitation, System, Washington, Washington state, WSDOT
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| Nelson,Thomas L. | WA-RD 050.2 | Development And Implementation Of Washington State's Pavement System - Summary 906 | 1982 |
Abstract:
This report describes the pavement system developed by staff over a period of five years. Both project-level and network-level pavement are represented within the four broad areas of data processing which combine to constitute the foundation of the system. The design of a pavement data file is laid out together with the process of assembling it. Also shown are the methods used to analyze and convert the file data pavement condition ratings to pavement performance curves for each project. The performance curves are then used, together with appropriate cost data, to determine the most cost-effective type and of fix. The network-level program then the needed work for each year of a rehabilitation program. Means are provided for adjusting the program to fit budget constraints or acceptable levels of average pavement condition It is concluded that the system, operating on biennial pavement condition ratings, provides a good solid framework for orderly analysis to estimate the economic benefits of the type, timing, and sequence of rehabilitation activities apply to a pavement.
Authors:
Nelson,Thomas L., LeClerc,R. V.
Keywords:
analysis, benefit, benefits, condition, cost, cost effective, data, design, developed, development, foundation, framework, management, management system, methods, Operating, pavement, pavement condition, pavement data file, pavement management, pavement performance, performance, program, project, rehabilitation, System, Washington, Washington state, WSDOT
This report describes the pavement system developed by staff over a period of five years. Both project-level and network-level pavement are represented within the four broad areas of data processing which combine to constitute the foundation of the system. The design of a pavement data file is laid out together with the process of assembling it. Also shown are the methods used to analyze and convert the file data pavement condition ratings to pavement performance curves for each project. The performance curves are then used, together with appropriate cost data, to determine the most cost-effective type and of fix. The network-level program then the needed work for each year of a rehabilitation program. Means are provided for adjusting the program to fit budget constraints or acceptable levels of average pavement condition It is concluded that the system, operating on biennial pavement condition ratings, provides a good solid framework for orderly analysis to estimate the economic benefits of the type, timing, and sequence of rehabilitation activities apply to a pavement.
Authors:
Nelson,Thomas L., LeClerc,R. V.
Keywords:
analysis, benefit, benefits, condition, cost, cost effective, data, design, developed, development, foundation, framework, management, management system, methods, Operating, pavement, pavement condition, pavement data file, pavement management, pavement performance, performance, program, project, rehabilitation, System, Washington, Washington state, WSDOT
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