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LTPP Program

LTPP Program. Long-Term Pavement Performance Program. Presented to the ACPA Professors Workshop Skokie, IL June 19, 2008. LTPP Program. Scope of Presentation. Fact about the LTPP Program LTPP/ASCE Data Analysis Contest Key Features of DataPave Online Sample Data Extraction

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LTPP Program

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  1. LTPP Program Long-Term Pavement Performance Program Presented to the ACPA Professors Workshop Skokie, IL June 19, 2008

  2. LTPP Program Scope of Presentation • Fact about the LTPP Program • LTPP/ASCE Data Analysis Contest • Key Features of DataPave Online • Sample Data Extraction • Other LTPP Products

  3. LTPP Program FACTS about the Long-Term Pavement Performance Program(LTPP) • 20 year program • Collects pavement performance data • Aprox. 1,914 research test sections throughout the US and Canada • Joint FHWA, State DOT, Provincial DOT cooperative program

  4. LTPP Program LTPP Development • Strategic Transportation Research Study • LTPP Planning • Strategic Highway Research Program (LTPP: $50 Million) 1984 1985-1987 1987-1992

  5. LTPP Program Original Objectives • Evaluate existing design methods. • Develop improved design methodologies and strategies for the rehabilitation of existing pavements. • Help support the develop of improved design equations for new and reconstructed pavements.

  6. LTPP Program Objectives Continued… • Determine the effects of loading, environment, material properties and variability, construction quality, and maintenance levels on pavement distress and performance. • Determine the effects of specific design features on pavement performance. • Establish a national long-term database to support SHRP’s objectives and to meet the future needs of the highway industry.

  7. LTPP Program General Pavement Studies (GPS)

  8. LTPP Program GPS continued…. • Focus on most commonly used pavement designs • One 500 foot section per location Primary Factors Subgrade: fine & course Traffic: medium & heavy Temp: freeze and non-freeze Moistures: wet and dry Secondary Factors AC thickness AC stiffness SN of base and subgrade PCC thickness Joint spacing

  9. LTPP Program General Pavement Studies (GPS) Approximately 652 sections

  10. LTPP Program Specific Pavement Studies (SPS)

  11. LTPP Program SPS continued…. • Focus on certain pavement engineering factors • Multiple 500 feet sections per location Primary Factors Subgrade: fine & course Traffic: medium & heavy Temp: freeze and non-freeze Moistures: wet and dry Secondary Factors AC drainage - yes, no AC thickness AC base type and thickness PCCP drainage- yes, no PCC strength and thickness Lane width Base type

  12. LTPP Program Specific Pavement Studies (SPS) Approximately 1,262 sections

  13. LTPP Program Dry Freeze Wet Freeze Dry No- Freeze Wet No- Freeze

  14. LTPP Program

  15. LTPP Program Pavement Distress

  16. LTPP Program Profile Data Smoothness

  17. LTPP Program FWD Structural Capacity

  18. LTPP Program Traffic Loads Weigh-In-Motion (WIM)

  19. LTPP Program Climatic Data Environmental Effects

  20. LTPP Program LTPP Data Collection Traffic Climate Pavement Structure Material Properties Pavement condition

  21. LTPP Program Scope of Presentation • Fact about the LTPP Program • LTPP/ASCE Data Analysis Contest • Key Features of DataPave Online • Sample Data Extraction • Other LTPP Products

  22. LTPP Program Why a contest ? • To work with the next generation of pavement engineers. • To work closely with universities, where future research is being conducted.

  23. LTPP Program • In 1998, LTPP/ASCE developed and conducted the first “International LTPP Data Analysis Contest” • Main catalyst “DataPave” • Since 1998 the contest has been conducted three additional times

  24. LTPP Program Projects are evaluated based on …. • Usefulness of product and potential benefit to end users, • Originality of concept, demonstrated use of the LTPP database, • Organization of paper, and presentation (including clarity and style).

  25. LTPP Program Segmented into four categories …. • Category 1, Undergraduate Students (Individual or team entry) • Category 2, Graduate Students (Individual or team entry) • Category 3, Partnership • Category 4, Curriculum

  26. LTPP Program Adoption of LTPP in the Classroom! • Incorporate LTPP data elements provide real-world applications • Professors are seeking more meaningful assignments for students and need data to support assignments • LTPP can provide much needed data

  27. LTPP Program Professor Case Study From Contest • Dr. Susan Tighe, University of Waterlou • USING LTPP FOR EDUCATING TOMORROW'S ENGINEER, 2003 First Place, CURRICULUM CATEGORY • Drs. Neeraj Buch and Karim Chatti • The Use of the LTPP Database in the Pavement Engineering Curriculum at Michigan State University, 2002 First Place, Curriculum CATEGORY • Dr. Shelley Stoffels, Penn State University

  28. LTPP Program Scope of Presentation • Fact about the LTPP Program • LTPP/ASCE Data Analysis Contest • Key Features of DataPave Online • Sample Data Extraction • Other LTPP Products

  29. LTPP Program Key Features of DataPave online • What's new (Database release announcement) • Table/Field Navigator • Table Export

  30. LTPP Program Key Features of DataPave online • What's new (Database release announcement) • Table/Field Navigator • Table Export

  31. LTPP Program LTPP Database… • MODULES • Climatic • General • Inventory • Maintenance • Monitoring • Rehabilitation • SMP • SPS (10) • Traffic • TABLES • Deflection • Profile • Friction • Distress • etc • ELEMENTS • Date • Time • Temperature • Individual data • elements

  32. LTPP Program Key Features of DataPave online • What's new (Database release announcement) • Table/Field Navigator • Table Export

  33. LTPP Program Scope of Presentation • Background of the LTPP Program • LTPP/ASCE Data Analysis Contest • Key Features of DataPave Online • Sample Data Extraction • Other LTPP Products

  34. LTPP Program Sample Data Extraction • Performance data • Inventory data (layer) • Traffic data • Materials testing • Profile

  35. 54-4003 54-4004 Layer data

  36. LTPP Program Extracted data

  37. 54-4003 54-4004 Traffic Data

  38. LTPP Program Extracted data

  39. 1-0101 1-0102 1-0103 Testing Data

  40. LTPP Program Extracted data

  41. 1-0101 1-0102 1-0103 Profile Data

  42. LTPP Program Extracted data

  43. LTPP Program Scope of Presentation • Background of the LTPP Program • LTPP/ASCE Data Analysis Contest • Key Features of DataPave Online • Sample Data Extraction • Other LTPP Products

  44. LTPP Program • LTPP Pavements Online • (1998 AASHTO supplement) • LTPP WIM Cost • DiVa Online • Other Products online • LTPPBind 2.1 & 3.1 beta • LTPP faultmeter plans and spec’s • Other

  45. LTPP Program Additional information on the contest …. www.fhwa.dot.gov/pavement/ltpp/datapave.cfm Federal Highway Administration Antonio Nieves Torres Tel. 202-493-3074 antonio.nieves@fhwa.dot.gov Dr. Karim Chatti Michigan State University Tel. (517) 355-6534 chatti@egr.msu.edu

  46. LTPP Program Additional information on LTPP products….

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