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Russian Engineers Training March 2011
Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course 1
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Asset Management Asphalt Pavement Management Systems
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Management Systems in Private Industry
Managers of corporate assets (buildings, grounds, and equipment) face similar issues Focus is to increase corporate profits Asphalt Pavement Management Systems
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Asset Management . . . Is a systematic process of maintaining, upgrading, and operating physical assets cost-effectively . . . Combines the use of sound engineering principles, accepted business practices, and economic theory to improve the decision-making process Asphalt Pavement Management Systems
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Components of an AMS A centralized database
Performance prediction models Analysis tools Reporting tools Asphalt Pavement Management Systems
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Quantifiable Objectives
Enhance knowledge of inventory and asset value Develop links that tie resource allocations to saving from replacement Establish standardized processes and protocols Consider life-cycle costing Asphalt Pavement Management Systems
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Concepts of AMS for Transportation Systems
Develop inventories Use condition measures Use performance measures Need for an integrated database Analyze techniques Format for user-friendly outputs Asphalt Pavement Management Systems
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Three-Dimensional Matrix Structure
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Systems Approach to Pavements
Identify key links between one or more strategies, where investment in one affects another Define various strategies for improving the effectiveness of these interactions Evaluate and implement the strategies to enhance the overall performance of the transportation system Asphalt Pavement Management Systems
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Systems Approach Define system elements and boundaries
System recommendations must reflect benefits to agency Strategy to match agency goal Systems as a tool to complement agency experience and expertise Asphalt Pavement Management Systems
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Benefits Improve decision-making process Improve productivity
Improve client responsiveness Asphalt Pavement Management Systems
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Importance of Transportation System
Transportation statistics Economic importance Movement of freight Asphalt Pavement Management Systems
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Importance of Pavements
Pavements deteriorate with time Good roads cost less If maintained at a reasonable level of service If response to preventative maintenance Asphalt Pavement Management Systems
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Effect of Treatment Timing on Cost
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Russian Engineers Training March 2011
Pavement Management Most of today’s highway work involves rehabilitation or reconstruction Requires knowing when work needs to be done Preservation Maintenance vs. Rehabilitation Conversation with Jay Norris at Tennessee Department of Transportation - $$ amount going into preservation and management is growing every year. 2003 – California set budget goals of $100 million, but only was able to spend $38 million For every $1 spent, $3 saved Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course 15
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Pavement Preservation
Russian Engineers Training March 2011 Pavement Preservation A philosophy which “applies traditional engineering-based analytical tools to the sensible management of a transportation agency’s pavement infrastructure.” Pavement Preservation: Practices, Research Plans, and Initiatives, NCHRP Project 20-07, 2005 Preservation is a philosophy – it is the idea behind us trying to get the most out of transportation system. This is a big picture strategy! Think about a University System. Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course 16
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Russian Engineers Training March 2011
Pavement Management Pavement management systems are support tools used by pavement personnel to assist in making cost-effective decisions concerning pavements. PMS are the tools used to carry out the pavement preservation philosophies. This is the Senate or the board! It is who makes the decisions! Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course 17
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What is a Pavement Management System?
A decision support tool Identifies sections needing treatment Finds cost-effective treatments to apply at any given time to meet desired level of service Within imposed constraints Asphalt Pavement Management Systems
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What is PMS? Planning and programming Analysis Design Construction
Maintenance Research Asphalt Pavement Management Systems
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Need for PMS Agencies traditionally focused on new construction
Maintenance and rehabilitation managed with less formal methods Crisis management Plan maintenance and rehabilitation Structured and documented procedures for spending money Asphalt Pavement Management Systems
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Need for PMS Transportation and world changes
Need to continually update information Necessary to make informed decisions Asphalt Pavement Management Systems
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Support of PMS FHWA Training courses Seminar and workshops
Technical assistance AASHTO Guidelines in 1985, 1990, 1999 Asphalt Pavement Management Systems
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Levels of a Pavement Management System
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Russian Engineers Training March 2011
PMS Levels Network Level Gives general guidance on levels of treatments and funding needs Sophisticated Project Level Develops specific plan for maintenance or rehabilitation Simpler Network – Top down logic, system organization, aggregate data, large data and resource requirements, sophisticated models Project – Simple models, less data aggregation, fewer data and resource requirements, less reliant on feedback Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course 24
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Network Level Analysis
Russian Engineers Training March 2011 Network Level Analysis Questions: What is the current health of the network? Which pavement sections need work? Which sections should be worked on first? How much money do we need? What impact will funding changes have? Trying to determine how a business is doing? What is the most efficient usage of funds? Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course 25
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Russian Engineers Training March 2011
Network Components Network Inventory General Roads, parking lots, and airfields Branches Roads: individual streets, specific parking lots Airfields: taxiways and runways Sections Smallest management units with similar traffic, structure, rank, drainage, shoulders, and condition Advantages: Optimize solutions for the whole network, quickly and accurately production conditional scenarios, prioritize broad areas, use consistent inputs in scenario comparisons End result- network model (Highway Design and Maintenance Strategy Model World Bank) Might not have enough individual project data to make good decisions Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course 26
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Project Level Analysis
Russian Engineers Training March 2011 Project Level Analysis Specific projects Identify the cause of all pavement distresses Field measurements to determine extent of work area Soil and pavement samples Drainage investigations Non-destructive testing Advantages: Relies less on aggregate data (data does not drive models), little data required, better link between network-level and project-level decisions, easier to obtain buy-in from others End result – project ranking, fully informed, but may not be as efficient, and might not produce optimum solutions Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course 27
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Typical Modules of a PMS
Database Analysis Feedback Asphalt Pavement Management Systems
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Types of Data Inventory Information relative to pavement condition
Construction, maintenance, and rehabilitation history Traffic Cost data Asphalt Pavement Management Systems
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Database Reports Pavement Condition Deficiency Reports
Pavement Condition Performance Histories MR&R Actions Pavement Inventory and Ranking Asphalt Pavement Management Systems
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Analysis Methods Pavement condition analysis
Priority assessment models Network optimization models Asphalt Pavement Management Systems
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Condition Analysis Combines the pavement distress data into a score or index Represents overall pavement condition Describes system condition Uses priority ranking scheme Uses decision tree approach as primary criteria to select project, timing, and treatments Asphalt Pavement Management Systems
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Condition Analysis Outputs
Ranking of pavement segments by condition index Identification of MR&R strategies and timing for individual pavement segments Estimate of funding needs for selected treatments Asphalt Pavement Management Systems
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Prioritization Models
Optimal MR & R strategies based on life cycle costs Projects are prioritized at the network level Benefit/cost ratio and cost effectiveness are more prevalent methods Asphalt Pavement Management Systems
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Prioritization Output
Prioritized listing of projects requiring action Costs for MR &R treatments Funding needs to meet desired network condition Single-year and multi-year with segments treatment timing and cost identified Asphalt Pavement Management Systems
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Optimization Output Similar to prioritizing model
Identifies an optimally balanced MR&R program Optimization models do not normally identify segment priorities Asphalt Pavement Management Systems
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Feedback Process A variety of processes are used to confirm reliability of PMS Asphalt Pavement Management Systems
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Network Level PMS Establish network budget requirements
Allocate funds to network priorities Schedule MR&R actions Asphalt Pavement Management Systems
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Network Level Products
Pavement network condition MR&R policies Budget requirements Network priorities Asphalt Pavement Management Systems
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Project Level PMS Primary objective is to provide information for specific pavement segments: Preferred MR&R for each project MR&R costs Expected MR&R performance. Asphalt Pavement Management Systems
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Budget Requirements Provide an estimate of budget requirements
At prescribed levels of performance Asphalt Pavement Management Systems
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Data Collection Needs Inventory Traffic/ Load
Pavement Condition Survey Asphalt Pavement Management Systems
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Russian Engineers Training March 2011
Inventory Plan Inventory process is foundation of a PMS Data must be: Relevant Reliable Cost effective to collect Cost effective to maintain Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course
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Two Important Rules Collect only the data you need!
Collect the data only when you need it! Asphalt Pavement Management Systems
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Russian Engineers Training March 2011
Typical Data Elements Identification Location Geometry Cost Pavement Structure & History Traffic Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course
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Additional Data Elements
Russian Engineers Training March 2011 Additional Data Elements Drainage information Geographical/environmental classification Proposed work / work-in-progress Other information Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course
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Data Sources Pavement structure/historical data Geometric data
Other inventory data Asphalt Pavement Management Systems
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Field Data Collection Photographic/Video logs Fast Less expensive
Limited viewing area Requires more post processing Field survey teams Slower More expensive Better reporting of field conditions Requires more preparation Asphalt Pavement Management Systems
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Homogeneous Sections Change in pavement type
Change in pavement structure Change in traffic Boundary between previous construction Change in subgrade Geographical of political boundaries Change in pavement condition Asphalt Pavement Management Systems
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Section Identification
Russian Engineers Training March 2011 Section Identification Purpose Requirements Methods Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course
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Network Identification/Definition
First step in developing a PMS Develop separate networks Roads, parking lots, airfields, other surfaced or unsurfaced vehicle facilities Separate networks in separate databases Smaller databases are more efficient Asphalt Pavement Management Systems
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Auburn Network Google Earth Asphalt Pavement Management Systems
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Branch Definition Readily identifiable part of pavement network
Individual street, parking lot, runway, or taxiway Smaller parking lots can be combined into one branch Asphalt Pavement Management Systems
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Auburn Branches Google Earth Asphalt Pavement Management Systems
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Section Definition Branches don’t always have similar characteristics because they are so large Sections are created for “managerial” purposes Smallest management units with similar traffic, structure, rank, drainage, shoulders, and condition Factors for division: Pavement structure, traffic, construction history, functional classification, drainage, shoulders, and condition Asphalt Pavement Management Systems
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College Street Sections
Google Earth Asphalt Pavement Management Systems
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Pavement Structure Structural composition
Thickness Materials Verified construction records Nondestructive testing program to ensure uniformity Pavement cross-section Asphalt Pavement Management Systems
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Traffic Volume and load intensity of traffic should be consistent
Roads and streets Truck traffic is primary concern Airfields Traffic channelization Center of pavement vs. edge of pavement Asphalt Pavement Management Systems
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Construction History Consistent construction history Time periods
Contractors Materials Techniques Major repairs = separate sections Asphalt Pavement Management Systems
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Functional Classification
If classification changes along branch, section change should be made Arterial to collector Asphalt Pavement Management Systems
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Drainage and Shoulders
Consider this when drainage and shoulders affects pavement performance Asphalt Pavement Management Systems
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Condition This is used after condition has been assessed
Change in distress type, quantities or cause should be considered Asphalt Pavement Management Systems
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Collecting Inventory Data
Russian Engineers Training March 2011 Collecting Inventory Data Office data Field data Time consuming Expensive MANDATORY Gathering process Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course
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Quality Control of Data
Russian Engineers Training March 2011 Quality Control of Data Integrity Accuracy Validity Security Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course
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Pavement Condition Survey
Ride quality or roughness Physical distress Structural capacity Safety Asphalt Pavement Management Systems
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Pavement Condition Survey (other issues)
Historical Rate of deterioration over time under accumulated traffic loads Frequency Depends on the type and age of pavement measured as well as the cost of the survey and the need for timely data Quality Control Inventory and condition data is essential to the success of a PMS Asphalt Pavement Management Systems
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Current State of Practice in PMS
Different PM methodologies Used 50% use pavement condition analysis network optimization priority assessment other approach FHWA 1996 Survey Detailed survey of state in workbook Asphalt Pavement Management Systems
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Databases and Analysis
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PMS Databases Put road, condition, and repair data into commercially available software Size is dependant upon Number of highways Length of segments Most software packages are customizable Asphalt Pavement Management Systems
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PMS Databases Develop relational databases Information to store
Inventory – route number, functional classification Pavement type Condition – ride quality, distress, friction Deflection Costs History Traffic/Loads Asphalt Pavement Management Systems
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PMS Databases Database products/reports Deficiency reports
Which section’s performance is unacceptable? Performance histories How has condition changed? Construction, maintenance, rehab histories List of budget needs Asphalt Pavement Management Systems
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Data Analysis Attempts to predict how long a pavement section will last based on: Type of repair Traffic Climate Based on experience and historical records Asphalt Pavement Management Systems
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Data Analysis Software packages can predict Annual repair costs
Overall system performance Expected pavement conditions Intent of system Identify the most cost-effective ways to maintain a highway system Asphalt Pavement Management Systems
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Software FHWA report Pavement Management Catalog
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Available Software StreetSaver San Francisco and Bay Area
PavePro Manager Deighton Total Infrastructure Management System (dTIMS ™) – Iowa microPAV Pavement View+ uniPAVEMENT RoadCure Asphalt Pavement Management Systems
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Benefits of a Pavement Management System
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Russian Engineers Training March 2011
Benefits More efficient use of available resources Detailed information of street system Quantified condition of network Develop maintenance and rehabilitation strategies Estimate impact of funding decisions Ability to answer “what if” questions Ability to justify and secure more funding Efficiency is a huge deal right now. More bang for the buck, but this takes some strategy! Detailed information – Go away from being a user to a manager! Wife vs. Me in the checking account! Justify and secure more funding – think about gathering your data. Asphalt Pavement Management Systems Asphalt Pavement Management SystemsAsphalt Technology Course 77
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Russian Engineers Training March 2011
Questions? Asphalt Pavement Management SystemsAsphalt Technology Course 78
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