Development of Pavement Type Evaluation Procedure for Texas Department of Transportation

2000 ◽  
Vol 1699 (1) ◽  
pp. 23-32 ◽  
Author(s):  
Muhammad Arif Beg ◽  
Zhanmin Zhang ◽  
W. Ronald Hudson
Keyword(s):  
Life Cycle Cost ◽  
Evaluation Procedure ◽  
Economic Evaluations ◽  
Life Cycle Cost Analysis ◽  
Department Of Transportation ◽  
Type Selection ◽  
Texas Department ◽  
Rational Procedure ◽  
And Performance

A rational procedure is presented for evaluating alternative pavement types for roadway projects. Agency costs, user delay costs, and performance levels are important factors for comparing alternative pavement strategies. These factors are included in the evaluation procedure. Economic evaluations are based on life-cycle cost analysis. Cost-effectiveness analysis is also included in the procedure and uses area under the performance curve as a measure of the effectiveness of a pavement design strategy. Limitations in economic evaluations and the role of other miscellaneous factors in pavement type selection are also discussed. A computer program, TxPTS, was developed to automate the evaluation procedure. Case studies are presented demonstrating the use of the program.

Metaheuristic Optimization in Seismic Structural Design and Inspection Scheduling of Buildings

2012 ◽  
pp. 152-173
Author(s):  
Chara Ch. Mitropoulou ◽  
Vagelis Plevris ◽  
Nikos D. Lagaros
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Assessment Tool ◽  
Optimization Problems ◽  
Construction Cost ◽  
Life Cycle Cost Analysis ◽  
Decentralized Decision Making ◽  
And Performance ◽  
Inspection Scheduling ◽  
Single Objective

Optimization is a field where extensive research has been conducted over the last decades. Many types of problems have been addressed, and many types of algorithms have been developed, while their range of applications is continuously growing. The chapter is divided into two parts; in the first part, the life-cycle cost analysis is used as an assessment tool for designs obtained by means of prescriptive and performance-based optimum design methodologies. The prescriptive designs are obtained through a single-objective formulation, where the initial construction cost is the objective to be minimized, while the performance-based designs are obtained through a two-objective formulation where the life-cycle cost is considered as an additional objective also to be minimized. In the second part of the chapter, the problem of inspection of structures and routing of the inspection crews following an earthquake in densely populated metropolitan areas is studied. A model is proposed and a decision support system is developed to aid local authorities in optimally assigning inspectors to critical infrastructures. A combined particle swarm – ant colony optimization based framework is implemented, which proves to be an instance of a successful application of the philosophy of bounded rationality and decentralized decision-making for solving global optimization problems.

Metaheuristic Optimization in Seismic Structural Design and Inspection Scheduling of Buildings

Data Mining ◽  
2013 ◽  
pp. 2132-2152
Author(s):  
Chara Ch. Mitropoulou ◽  
Vagelis Plevris ◽  
Nikos D. Lagaros
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Assessment Tool ◽  
Optimization Problems ◽  
Construction Cost ◽  
Life Cycle Cost Analysis ◽  
Decentralized Decision Making ◽  
And Performance ◽  
Inspection Scheduling ◽  
Single Objective

Optimization is a field where extensive research has been conducted over the last decades. Many types of problems have been addressed, and many types of algorithms have been developed, while their range of applications is continuously growing. The chapter is divided into two parts; in the first part, the life-cycle cost analysis is used as an assessment tool for designs obtained by means of prescriptive and performance-based optimum design methodologies. The prescriptive designs are obtained through a single-objective formulation, where the initial construction cost is the objective to be minimized, while the performance-based designs are obtained through a two-objective formulation where the life-cycle cost is considered as an additional objective also to be minimized. In the second part of the chapter, the problem of inspection of structures and routing of the inspection crews following an earthquake in densely populated metropolitan areas is studied. A model is proposed and a decision support system is developed to aid local authorities in optimally assigning inspectors to critical infrastructures. A combined particle swarm – ant colony optimization based framework is implemented, which proves to be an instance of a successful application of the philosophy of bounded rationality and decentralized decision-making for solving global optimization problems.

Risk-Based Life-Cycle Cost Analysis of Privatized Infrastructure

2005 ◽  
Vol 1924 (1) ◽  
pp. 192-196 ◽  
Author(s):  
Hesham Osman
Keyword(s):  
Life Cycle ◽  
Cost Analysis ◽  
Life Cycle Cost ◽  
Life Cycle Cost Analysis ◽  
Infrastructure Projects ◽  
Financial Investment ◽  
Relative Risks ◽  
Investment Opportunities ◽  
Probabilistic Values ◽  
And Performance

One main shortcoming in the use of life-cycle cost analysis (LCCA) for analyzing long-term infrastructure projects is the uncertainty in the value of the LCCA parameters. Probabilistic LCCA incorporates these elements of uncertainty by assigning probabilistic values to cost and performance parameters. Studies that have performed probabilistic LCCA in the infrastructure domain propose a probability-based framework for alternative comparison. Although such frameworks convey a wealth of probabilistic information, they are not well suited to decision making. This study proposes a risk-based framework that is similar to techniques used in portfolio risk management. To illustrate the use of such a framework, a Monte Carlo simulation is used to perform probabilistic LCCA for a highway project. Two highway investment opportunities with varying risks and returns are analyzed. The decision framework is used to compare the simulation results with some common investment opportunities in the market. This framework enables private-sector investors to assess the relative risks and returns of alternative infrastructure projects. The fact that similar frameworks are used in the financial investment domain makes this approach suitable for the economic analysis of privatized infrastructure.

Computerized Equipment Replacement Methodology

2003 ◽  
Vol 1824 (1) ◽  
pp. 77-83 ◽  
Author(s):  
José Weissmann ◽  
Angela Jannini Weissmann ◽  
Srinivas Gona
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Relevant Information ◽  
Department Of Transportation ◽  
Public Agencies ◽  
Equipment Replacement ◽  
Texas Department ◽  
Replacement Model ◽  
Replacement Decisions ◽  
Private And Public

The Texas Department of Transportation (DOT) owns and maintains an active fleet inventory of approximately 17,000 units and replaces about 10% of them annually. Any methodology that can improve Texas DOT’s replacement procedures could potentially save millions of dollars. Private and public agencies do not routinely use life-cycle cost as a replacement criterion because the only way to automate inspection of thousands of life-cycle cost histories has been to define an acceptability threshold for annualized costs. Most fleet managers consider this practice too inaccurate. The most relevant information provided by a lifecycle cost graph is its trend. Units whose life-cycle costs have been increasing longer or at a faster rate should have higher replacement priority. The trend score concept allows a computer to mimic replacement decisions made by a person visually inspecting a series of life-cycle cost histories. A new economically sound methodology for assisting with equipment replacement at Texas DOT is presented. This new method takes full advantage of Texas DOT’s comprehensive equipment operating system database, can prioritize the units on the basis of comparisons among all units within any desired class of equipment, and uses life-cycle cost trends as a replacement criterion. This methodology was implemented through the Texas Equipment Replacement Model, a menudriven software that allows the fleet manager to efficiently apply the methodology.

Evolution of the Surface Performance-Graded Specification for Chip Seal Binders

2017 ◽  
Vol 2632 (1) ◽  
pp. 32-43 ◽  
Author(s):  
Amy Epps Martin ◽  
Shi Chang ◽  
Swathi Mayi Theeda ◽  
Edith Arámbula-Mercado
Keyword(s):  
Field Performance ◽  
First Year ◽  
Department Of Transportation ◽  
The Past ◽  
Implementation Effort ◽  
Texas Department ◽  
Chip Seal ◽  
Surface Performance ◽  
Aggregate Loss ◽  
And Performance

Over the past 15 years, a surface performance-graded (SPG) specification for chip seal binders has been developed by the Texas Department of Transportation and has been validated with laboratory measurements and the visual field performance of 120 highway sections. The SPG specification was established in an effort to extend the service life of chip seals by providing a binder grading system and an associated selection method that ( a) accounted for differences in climate and ( b) used existing equipment and performance-based properties that precluded bleeding and aggregate loss in the critical first year of service after construction. A multiyear implementation effort of this specification is ongoing. This paper describes the motivation and evolution of the SPG specification, including a summary of the validation effort and a round robin testing program with the Texas Department of Transportation and suppliers of chip seal binders. Binder selection guidelines that use this specification are provided.

scholarly journals PAVEMENT TYPE SELECTION FOR DEVELOPING COUNTRIES APPLYING LIFE CYCLE COST ANALYSIS

2021 ◽  
Vol 9 (04) ◽  
pp. 314-320
Author(s):  
Azam Khan ◽  
◽  
Mahmood Omar Imam ◽  
Keyword(s):  
Developing Countries ◽  
Life Cycle ◽  
Cost Analysis ◽  
Life Cycle Cost ◽  
Road Network ◽  
Flexible Pavement ◽  
Construction Cost ◽  
Life Cycle Cost Analysis ◽  
Rigid Pavement ◽  
Type Selection

Road network acts as a vein for the socio-economicdevelopment of a country. To maintain sustainable development,countries all over the world are investing heavily in road network infrastructure development. Bangladesh, an essential partner of the Asian Highway, is alsoinvesting heavily in road network development. But due to poorplanning, inefficient implementing agencies, inadequate pavementdesign, low-quality construction practices, lack of pavementmaintenance, rampant overloading & tropical climaticconditions, the investment is not yielding the desired result. In Bangladesh, the current trend of pavement construction is 95% flexible pavement [16]. Due to tropical climatic conditions & regular flash floods during the rainy season, water stagnation damages the flexible pavements severely. The rigid pavement has a high potential of survivability against the damage due to water stagnation. In Bangladesh, the transportation agencies emphasize on least initial construction cost rather thanthe least Life Cycle Costas the only tool for pavement type selection. Due to low initial construction cost, the flexible pavement always gets priority over the rigid pavement. In this research, Life Cycle Cost Analysisof flexible and rigid pavement had been done for Sylhet-Bholagajroad comprising of both rigid & flexible portions. The pavement design data & different Schedule of Rates collected from the Roads and Highways Departmenthad been used for this analysis. 12% discount rate was used to convert all estimated future costs to Net Present Value. After performing a life cycle cost analysis, it can be concluded that rigid pavement is the optimal choice of pavementfor developing countries like Bangladesh.

Life Cycle Cost Analysis in pavement type selection

2008 ◽  
pp. 805-810 ◽  
Author(s):  
Zeynep Guven ◽  
Prasad Rao Rangaraju ◽  
Serji Amirkhanian
Keyword(s):  
Life Cycle ◽  
Cost Analysis ◽  
Life Cycle Cost ◽  
Life Cycle Cost Analysis ◽  
Type Selection
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