I-395 Express Lanes

Arlington, Virginia
PTS completed the evaluation as a sub-consultant to HDR in support of the preliminary pavement rehabilitation design project.

The scope of the evaluation included a 100% visual condition survey of the pavement distresses, Non-Destructive Testing (NDT), and structural analysis.

The visual condition survey was conducted for the entire limits of the project. Each distress was recorded on field maps, noting the type, severity, and location of each distress encountered.

The recorded pavement distress data was utilized to determine the types and quantities of required joint repairs to the underlying Portland Cement Concrete (PCC) pavement.

PTS conducted the Non-Destructive Testing (NDT) utilizing their in-house Dynatest Model 8000 Falling Weight Deflectometer (FWD). One lane of testing was completed for each travel lane, with tests spaced by 100’ along each lane and staggered by 50' for adjacent lanes. Additionally, NDT tests were conducted on the shoulders.

Utilizing the collected NDT data and the known pavement thickness and composition, PTS completed a structural evaluation of the roadway pavements included within the project limits. The structural evaluation included the following components:

Impulse Stiffness Modulus (ISM): The overall strength characteristics of each lane of testing along the roadway was analyzed by computing the ISM value at each NDT test location. The resulting ISM values were plotted to review the general strength characteristics along the length of the roadway.

Backcalculations: The pavement thickness and composition data was used in conjunction with the collected NDT data to complete the backcalculation of each pavement layers' strength. The backcalculations result in elastic modulus values for the Asphalt Concrete (AC), PCC, base course, and the underlying subgrade. Furthermore, PTS computed an "Design k-value" using the average subgrade elastic modulus value minus one standard deviation.

Rehabilitation Alternatives: PTS reviewed potential rehabilitation alternatives for their structural capacity to ensure the designs could meet the required design life based on the anticipated traffic.

East Hampton Airport (HTO)

Wainscott, New York
PTS’s scope of work included a thorough structural evaluation of all airfield pavements, including runways, taxiways, and aprons.

PTS conducted Non-Destructive Testing (NDT) utilizing their in-house Dynatest Model 8000 Falling Weight Deflectometer (FWD) on all runways, taxiways, and aprons.

Utilizing the collected NDT data, known pavement thickness and composition, and aircraft fleet mix information, PTS completed a structural evaluation of all airside pavements included in the project’s scope. The structural evaluation included the following components:

Impulse Stiffness Modulus (ISM): The overall strength characteristics of each pavement section was analyzed by computing the ISM value at each NDT test location. The resulting ISM values were plotted to evaluate the overall strength of each pavement section.

Backcalculations: Pavement thickness and composition data was used in conjunction with the collected NDT data to complete a backcalculation of each pavement layers’ strength utilizing the FAA program, BAKFAA. The backcalculations result in elastic modulus values for each layer of the pavement section, including the underlying subgrade. Furthermore, PTS computed an “Evaluation CBR” using the average subgrade elastic modulus value minus one standard deviation, for each pavement section.

PCN Computation: A Pavement Classification Number (PCN) was computed for each pavement section utilizing the FAA’s program, COMFAA. The resulting PCNs were compared to the Aircraft Classification Numbers (ACN) of the aircraft included in the fleet mix.

Remaining Structural Life & Rehabilitation Alternatives: PTS analyzed the estimated remaining structural life utilizing the pavement thickness and composition, aircraft fleet mix, and the backcalculated subgrade conditions. The estimated structural life computations were completed utilizing FAA software, FAARFIELD. Additionally, feasible rehabilitation alternatives were investigated for those sections indicating structural deficiencies.

Antonio B. Won Pat International Airport

Tamuning, Guam
The scope of the evaluation includes a 100% visual condition survey of the pavement distresses, Non-Destructive Testing (NDT), and structural analysis.

The visual condition survey will be conducted for the entire limits of the project. Each distress will be recorded on field maps, noting the type, severity, and location of each distress encountered.

Additionally, representative photographs will be taken of the typical distresses observed in the field.

Upon completion of the visual condition survey, the pavement distresses will be mapped in CAD file to accurately display the location of each pavement distress encountered.

PTS will conduct Non-Destructive Testing (NDT) utilizing their in-house Dynatest Model 8081 Heavy Weight Deflectometer (HWD) within the limits of the proposed apron and taxiway rehabilitation.

Utilizing the collected NDT data, known pavement thickness and composition, and aircraft fleet mix information, PTS will complete a structural evaluation of the apron and taxiway pavements included in the project’s scope. The structural evaluation includes the following components:

Impulse Stiffness Modulus (ISM): The overall strength characteristics of each pavement section will be analyzed by computing the ISM value at each NDT test location. The resulting ISM values will be plotted to evaluate the overall strength of each pavement section.

Backcalculations: Pavement thickness and composition data will be used in conjunction with the collected NDT data to complete a backcalculation of each pavement layers' strength utilizing the FAA program, BAKFAA. The backcalculations will result in elastic modulus values for each layer of the pavement section, including the underlying subgrade. Furthermore, PTS will compute a "Design k-value" using the average subgrade elastic modulus value minus one standard deviation, for each pavement section.

Rehabilitation Alternatives: PTS will investigate feasible rehabilitation alternatives based on the results of the visual condition survey and the structural evaluation. PTS will utilize FAA software, FAARFIELD, for all pavement design computations.

Puerto Rico Statewide Airport PMS Update

Nine Airports throughout Puerto Rico
Pavement Technical Solutions, Inc. (PTS) is in the process of assisting with an update to the Airport Pavement Management System (APMS) for nine (9) airports throughout Puerto Rico. The following airports are included in the scope of work:

• Eugiono Maria de Hostos Airport (MAZ)
• Mercedita Airport (PSE)
• Fernando Luis Ribas Dominicci Airport (SIG)
• Rafael Hernandez Airport (BQN)
• Arecibo (Nery) Juarbe Pol (ABO)
• José Aponte de la Torre Airport (RVR)
• Humacao Airport (X63)
• Benjamin Rivera Noriega Airport (CPX)
• Antonio Rivera Rodriguez Airport (VQS)

PTS is conducting Non-Destructive Testing (NDT) utilizing their in-house Dynatest Model 8000 Falling Weight Deflectometer (FWD) for all nine airports included in the project’s scope. PTS is conducting NDT on all runways, taxiways, and public-use aprons.

Utilizing the collected NDT data, known pavement thickness and composition, and aircraft fleet mix information, PTS will complete a structural evaluation of all airside pavements included in the project’s scope. The structural evaluation includes the following components:

• Impulse Stiffness Modulus (ISM): The overall strength characteristics of each pavement section will be analyzed by computing the ISM value at each NDT test location.
• Backcalculations: The pavement thickness and composition data is used in conjunction with the collected NDT data to complete the backcalculation of each pavement layers’ strength utilizing the FAA program, BAKFAA.
• PCN Computation: A Pavement Classification Number (PCN) is being computed for each runway section at each airport utilizing the FAA’s program, COMFAA.
• Rehabilitation Alternatives: PTS is developing rehabilitation and reconstruction alternatives for structurally deficient sections, utilizing FAA software, FAARFIELD.

Atlantic City International Airport (ACY)

Egg Harbor Township, New Jersey
PTS completed the evaluation as a sub-consultant to AECOM in support of the FAA Technical Center’s Trapezoidal Grooving Research project. The limits of the project included a 2,000’ section of Runway 4-22.

The scope of the evaluation included a 100% visual condition survey of the pavement distresses, Non-Destructive Testing (NDT), and structural analysis.

The visual condition survey was conducted for the entire limits of the project. Each distress was recorded on field maps, noting the type, severity, and slab location of each distress encountered. Additionally, photographs were taken of each distress observed in the field to further document the current pavement conditions.

The recorded pavement distress data was utilized to compute the existing Pavement Condition Index (PCI) and Structural Condition Index (SCI) of the keel, right, and left sections of the runway.

PTS conducted the Non-Destructive Testing (NDT) utilizing their in-house Dynatest Model 8000 Falling Weight Deflectometer (FWD). Six (6) lanes of testing were completed, with tests spaced by 100’ along each lane and staggered by 50’ for adjacent lanes.

Utilizing the collected NDT data and the known pavement thickness and composition, PTS completed a structural evaluation of the runway pavements included within the project limits. The structural evaluation included the following components:

• Impulse Stiffness Modulus (ISM): The overall strength characteristics of each lane of testing along the runway was analyzed by computing the ISM value at each NDT test location. The resulting ISM values were plotted to review the general strength characteristics along the length of the runway test section.
• Backcalculations: The pavement thickness and composition data was used in conjunction with the collected NDT data to complete the backcalculation of each pavement layers’ strength utilizing the FAA program, BAKFAA. The backcalculations result in elastic modulus values for the concrete pavement and the underlying subgrade. Furthermore, PTS computed an “Evaluation k-value” using the average subgrade elastic modulus value minus one standard deviation.