Impact of Design Features on Pavement Response and Performance in Rehabilitated Flexible and Rigid Pavements

Appendix E. Performance and Input Database for MEPDG Analysis

This section is an electronic appendix and explains the electronic file structure and fields in the various tables in the database. Performance data of SPS-5 and SPS-6 experiments were compiled into this database for comparison with MEPDG analysis results. The database also contains the input data used in the MEPDG analyses. The data provided in this database were used during phase 2 of this project. Moreover, it allows for the creation of the input files for all sections in SPS-5 and SPS-6 experiments.

Performance Data

Performance data for all SPS-5 and SPS-6 sections are stored in the database. These data were used in phase 2 of this project. The performance data tables are labeled "Performance" followed by the distress type. The following lists the tables and respective fields:

Table name: Performance_Roughness

• Fields:
• STATE_CODE: Numerical code for State or province. U.S. codes are consistent with Federal information processing standards.
• SHRP_ID: Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
• Date: Survey date.
• IRI Mean: Average of IRI measurements, inch/mi.
• IRI Std Dev: Standard deviation of IRI measurements, inch/mi.
• IRI Num: Number of IRI measurements.

Table name: Performance_Rutting

• Fields:
• STATE_CODE: Numerical code for State or province. U.S. codes are consistent with Federal information processing standards.
• SHRP_ID: Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
• Date: Survey date.
• Rut Depth Mean: Average of rutting measurements, inch/mi.
• Rut Depth Std Dev: Standard deviation of rutting measurements, inch/mi.
• Rut Depth Num: Number of rutting measurements.

Table name: Performance_Fatigue_cracking

• Fields:
• STATE_CODE: Numerical code for State or province. U.S. codes are consistent with Federal information processing standards.
• SHRP_ID: Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
• Date: Survey date.
• Low Severity: Low severity, ft².
• Moderate Severity: Moderate severity, ft².
• High Severity: High severity, ft².
• Total Severity: Total severity, ft².

Table name: Performance_Longitudinal_cracking

• Fields:
• STATE_CODE: Numerical code for State or province. U.S. codes are consistent with Federal information processing standards.
• SHRP_ID: Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
• Date: Survey date.
• Not Sealed Low Severity: Low severity, ft.
• Not Sealed Moderate Severity: Moderate severity, ft.
• Not Sealed High Severity: High severity, ft.
• Not Sealed Total: Total, ft.
• Sealed Low Severity: Low severity, ft.
• Sealed Moderate Severity: Moderate severity, ft.
• Sealed High Severity: High severity, ft.
• Sealed Total: Total, ft.
• Total Low Severity: Low severity, ft.
• Total Moderate Severity: Moderate severity, ft.
• Total High Severity: High severity, ft.
• Total: Total, feet.

Table name: Performance_Transverse_cracking

• Fields:
• STATE_CODE: Numerical code for State or province. U.S. codes are consistent with Federal information processing standards.
• SHRP_ID: Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
• Date: Survey date.
• Not Sealed Low Severity: Low severity, ft.
• Not Sealed Moderate Severity: Moderate severity, ft.
• Not Sealed High Severity: High severity, ft.
• Not Sealed Total: Total, ft.
• Sealed Low Severity: Low severity, ft.
• Sealed Moderate Severity: Moderate severity, ft.
• Sealed High Severity: High severity, ft.
• Sealed Total: Total, ft.
• Total Low Severity: Low severity, ft.
• Total Moderate Severity: Moderate severity, ft.
• Total High Severity: High severity, ft.
• Total: Total, ft.

Table name: Performance_Faulting

• Fields:
• STATE_CODE: Numerical code for State or province. U.S. codes are consistent with Federal information processing standards.
• SHRP_ID: Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
• Date: Survey date.
• Average: Average of faulting measurements, inch.
• Minimum: Minimum of faulting measurements, inch.
• Maximum: Maximum of faulting measurements, inch.
• Std Dev: Standard deviation of faulting measurements, inch.

Table name: Performance_PCC_slab_cracking

• Fields:
• STATE_CODE: Numerical code for state or province. U.S. codes are consistent with Federal information processing standards.
• SHRP_ID: Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
• Date: Survey date.
• Longitudinal Not Sealed Low Severity: Longitudinal cracking low severity, ft.
• Longitudinal Not Sealed Moderate Severity: Longitudinal cracking moderate severity, ft.
• Longitudinal Not Sealed High Severity: Longitudinal cracking high severity, ft.
• Longitudinal Not Sealed Total: Total longitudinal cracking not sealed, ft.
• Longitudinal Sealed Low Severity: Longitudinal cracking low severity, ft.
• Longitudinal Sealed Moderate Severity: Longitudinal cracking moderate
  severity, ft.
• Longitudinal Sealed High Severity: Longitudinal cracking high severity, ft.
• Longitudinal Sealed Total: Total longitudinal cracking not sealed, ft.
• Transverse Not Sealed Low Severity: Transverse cracking low severity, ft.
• Transverse Not Sealed Moderate Severity: Transverse cracking moderate
  severity, ft.
• Transverse Not Sealed High Severity: Transverse cracking high severity, ft.
• Transverse Not Sealed Total: Total transverse cracking not sealed, ft.
• Transverse Sealed Low Severity: Transverse cracking low severity, ft.
• Transverse Sealed Moderate Severity: Transverse cracking moderate severity, ft.
• Transverse Sealed High Severity: Transverse cracking high severity, ft.
• Transverse Sealed Total: Total transverse cracking not sealed, ft.
• Total Low Severity: Total longitudinal and transverse cracking low severity, ft.
• Total Moderate Severity: Total longitudinal and transverse cracking moderate severity, ft.
• Total High Severity: Total longitudinal and transverse cracking high severity, ft.
• Total: Total longitudinal and transverse cracking, ft.

MEPDG Input data

Data used to create the MEPDG run files are stored in two tables in the database. One table contains the data for SPS-5 sections, and the other contains data for SPS-6 sections. Additional input data could not be placed in the database file and were stored in folders to support the main database.

Traffic data for monthly adjust factors (MAFs) and axle load factors (ALFs) were stored in files already in the format required by MEPDG. These files are located in the folder called "Traffic-Supporting Files." Climate files are also stored in the "Climate-Supporting Files" folder. References to the files stored outside the database are located in the appropriate fields in the MEPDG inputs table in the database.

The following tables and respective fields were populated and stored in the database:

• Table name: SPS-5 MEPDG Inputs.
• Fields:
• STATE_CODE: Numerical code for State or province. U.S. codes are consistent with Federal information processing standards.
• SHRP_ID: Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
• Design Life: Number of years of service life in the LTPP program after rehabilitation.
• Subgrade Construction Month: Subgrade construction month.
• Pavement Construction Month: Pavement construction month.
• Traffic Open Date: Date pavement was opened to traffic after rehabilitation.
• Traffic_AADTT: Average annual daily truck traffic.
• Traffic_MAF: Name of file containing the monthly adjusted factors, in MEPDG format.
• Traffic_VCD: Vehicle class distribution, separated by commas (classes 4–13).
• Traffic_HD: Hourly distribution.
• Traffic Growth Factor: Traffic growth factor.
• ALF: Name of file containing the axle load factors in MEPDG format. This file is located in the supporting folders to the database.
• Number of Axles Per Truck: Name of file containing the number of axles per truck, in MEPDG format. This file is located in the supporting folders to the database.
• Climate: Name of file containing the climate data, in MEPDG format. This file is located in the supporting folders to the database.
• Structure: Description of pavement layers and thicknesses.
• Pavement Rating: Pavement rating before rehabilitation.
• Rutting: Pavement rutting before rehabilitation.
• Milling Thickness: Milling thickness before rehabilitation.
• HMA_Retained ³/₄-inch Sieve: HMA-retained ³/₄–inch (19.05-mm) sieve.
• HMA_Retained ³/₈-inch Sieve: HMA-retained ³/₈–inch (9.53-mm) sieve.
• HMA_Retained #4 Sieve: HMA-retained #4 sieve.
• HMA_% Passing #200 Sieve: HMA percentage passing #200 sieve.
• HMA_Asphalt Binder Type: HMA asphalt binder type.
• HMA_Effective Binder Content: HMA effective binder content.
• HMA_Air Voids: HMA air voids.
• Unbound Material Properties: Unbound resilient modulus, when available.
• Table name: SPS-6 MEPDG Inputs.
• Fields:
• ID: Numerical code for State or province. U.S. codes are consistent with Federal information processing standards.
• SHRP_ID: Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
• Design Life: Number of years of service life in the LTPP program after rehabilitation
• Subgrade Construction Month: Subgrade construction month.
• Pavement Construction Month: Pavement construction month.
• Traffic Open Date: Date pavement was opened to traffic after rehabilitation.
• Traffic_AADTT: Average annual daily truck traffic.
• Traffic_MAF: Name of file containing the monthly adjusted factors, in MEPDG format.
• Traffic_VCD: Vehicle class distribution, separated by commas (classes 4–13).
• Traffic_HD: Hourly distribution.
• Traffic Growth Factor: Traffic growth factor.
• ALF: Name of file containing the axle load factors in MEPDG format. This file is located in the supporting folders to the database.
• Number of Axles Per Truck: Name of file containing the number of axles per truck in MEPDG format. This file is located in the supporting folders to the database.
• Climate: Name of file containing the climate data in MEPDG format. This file is located in the supporting folders to the database.
• Structure: Description of pavement layers and thicknesses.
• Joint Spacing (ft): Joint spacing, ft.
• Pavement Rating: Pavement rating before rehabilitation.
• Modulus of Rupture (psi): PCC modulus of rupture.
• Elastic Modulus (psi): PCC modulus of rupture.
• % Slabs w/ Transverse Cracks Before: Percentage slabs with transverse cracking before rehabilitation.
• % Slabs w/ Transverse Cracks Fixed: Percentage slabs with transverse cracking fixed during rehabilitation.
• HMA_Retained ³/₄-inch Sieve: HMA-retained ³/₄-inch (19.05-mm) sieve.
• HMA_Retained ³/₈-inch Sieve: HMA-retained ³/₈-inch (9.53-mm) sieve.
• HMA_Retained #4 Sieve: HMA-retained #4 sieve.
• HMA_% Passing #200 Sieve: HMA percentage passing #200 sieve.
• HMA_Asphalt Binder Type: HMA asphalt binder type.
• HMA_Effective Binder Content: HMA effective binder content.
• HMA_Air Voids: HMA air voids.
• Unbound Material Properties: Unbound resilient modulus, when available.