Case

Studies

GRL Engineers offer a wide range of deep foundation testing and consulting services, nationwide. Most GRL Engineers have achieved Advanced Level or higher on both the PDCA/PDI Dynamic Measurement and Analysis Proficiency Test.

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Sand Island Wastewater Treatment Plant

ACIP piles were tested using Bi-Directional Static Load Testing Services and Thermal Integrity Profiling for the $180.5 million expansion of the Honolulu wastewater treatment plant.
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St. Francis Hospital Parking Garage Replacement

An old foundation with unknown capacity was tested using an APPLE High Strain Dynamic Load Test and CAPWAP Analyses to determine if the foundation would be usable for a new parking garage. With minimal information on the original foundation, GRL Engineers were able to assess capacity, stresses and soil resistance.
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West Virigina Shaft Bottom Cleanliness Specifications

The West Virigina Department of Highways (WVDOH) implemented a requirement to inspect drilled shaft bottom cleanliness. GRL Engineers provide Drilled Shaft Bottom Cleanliness Evaluations and have provided services to many projects in the "Mountain State".
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Plaquemines LNG Megaproject in Port Sulphur
Thousands of piles were installed at the Plaquemines LNG project in Port Sulphur Louisiana. GRL Engineers were utilized to assess pile capacity with Static Load Testing and APPLE Dynamic Load Testing. Low Strain Integrity Testing was used to assess pile integrity. CAPWAP® Analyses were used to assess load testing data.
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Dynamic Load Testing on Helical Piles
After micropiles were swapped for helical piles on a foundation project, GRL Engineers were brought in to evaluate and confirm helical pile capacity. GRL Engineers utilized Dynamic Load Testing Services using GRL's APPLE 7-2G. Collected data was further analyzed with CAPWAP Analysis.
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Corvallis Van Buren Bridge Replacement
Establishing a comprehensive understanding of the soil and foundation was pertinent to the construction of the new Corvallis Van Buren Bridge. GRL Engineers were hired to analyze the foundation’s capacity using Bi-Directional Static Load Testing services. Additionally, Drilled Shaft Verticality was assessed prior to concrete installation. Thermal Integrity Profiling was utilized to monitor concrete curing and identify potential anomalies. Crosshole Sonic Logging was utilized when a thermal wire did not record data.
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St. Francis Hospital Parking Garage Replacement
An old foundation with unknown capacity was tested using an APPLE High Strain Dynamic Load Test and CAPWAP Analyses to determine if the foundation would be usable for a new parking garage. With minimal information on the original foundation, GRL Engineers were able to assess capacity, stresses and soil resistance.
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Tampa Bay Desalination Facility
ACIP piles were utilized to update the Tampa Bay Desalination Plant foundation. APPLE Dynamic Load Testing with a 5-ton system was performed and CAPWAP Analysis determined shaft and toe resistance. Additionally Low Strain Integrity Testing was performed before and after the drop tests.
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Extensive Load Test Drilled Shaft Program with Integrity Assessments
A large jobsite in central Ohio utilized a robust test program to determine shaft design, capacity and integrity. A 1000-ton Static Load Testing was performed as well as Dynamic Load Testing using an APPLE system. Thermal Integrity Profiling and Low Strain Integrity Testing services were provided to assess concrete. CAPWAP Analyses were utilized to review capacity.
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Ports of Indiana - Burns Harbor
GRL Engineers provided GRLWEAP Analysis prior to installation and Dynamic Load Testing services during construction of the new ship berths for the Burns Harbor. Further CAPWAP Analyses were performed to assess pile load capacity.
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Florida High Speed Rail
GRL Engineers provided Predriveability Analyses with GRLWEAP, Pile Driving Monitoring during installation and CAPWAP analysis services for various bridge structures on the western portion of the Florida High Speed Rail.
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Trinity River Railroad Bridge
To accommodate the Trinity River Railroad Bridge replacement, GRL provided Thermal Integrity Profiling and Crosshole Sonic Logging for a 120-inch O.D. shaft. APPLE High Strain Dynamic Load Testing was performed following concrete curing to assess capacity of the shaft.
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West Virigina Shaft Bottom Cleanliness Specifications
The West Virigina Department of Highways (WVDOH) implemented a requirement to inspect drilled shaft bottom cleanliness. GRL Engineers provide Drilled Shaft Bottom Cleanliness Evaluations and have provided services to many projects in the "Mountain State".
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Central 70 Highway Project
GRL Engineers performed testing on the concrete integrity of many caissons for the Central 70 Project, including Crosshole Sonic Logging and Thermal Integrity Profiling. Over a duration of 2 years, 50 plus drilled caissons were tested.
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Offshore Wind Farms in New Jersey
GRL Engineers provided a variety of testing services for Offshore Wind Farms off the New Jersey Coastline, including SPT Energy Calibration, Pile Driving Monitoring with a PDA, CAPWAP Analysis, Wave Equation Analysis with GRLWEAP, Compressive Static Load Testing with embedded instrumentation and Lateral Static Load Testing using a ShapeArray. Select "Download" to read the full paper.
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Scotts Hill Water Tower in Wilmington, NC
The foundation for the Wilmington Water Tower specified Dynamic Load Testing and Low Strain Integrity Testing on production drilled shafts. Utilizing Low Strain Integrity Testing identified an impedance, and the load test in combination with a CAPWAP Analysis assessed the pile load capacity.
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NASA Vehicle Assembly Building
The largest single-story building in the world, the Vehicle Assembly Building at Kennedy Space Center, underwent structural upgrades to accomodate the Artemis missions returning to the moon. GRL Engineers provided Thermal Integrity Profiling services to assess pile integrity, APPLE High Strain Dynamic Load Testing services on augercast piles to determine load capacity, and CAPWAP analyses to simulate a static load test.
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Radius Dilworth Overlook in Charlotte
Thermal Integrity Profiling was used to take thermal measurements during concrete hydration on the overlook project in Charlotte, NC. GRL Engineers performed integrity testing on 14 production shafts for the high-rise foundation.
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Unionport Bridge Replacement
In Bronx, New York, the Unionport bridge underwent a replacement which consisted of 43 drilled shafts. GRL Engineers provided Crosshole Sonic Logging, Bi-Directional Static Load Testing, Thermal Integrity Profiling, as well as Low Strain Integrity Testing.
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Toombs County Bridge Replacement over the Altamaha River
GRL performed Drilled Shaft Verticality Assessment, Shaft Base Cleanliness Assessment, as well as Bi-Directional Static Load Testing (“BDSLT”) services. A multi-level jack assembly configuration increased the complexity of shaft installation requirements, load test execution, and test data analyses. Thermal Integrity Profiling was also utilized during concrete curing to measure thermal data every 15 minutes.
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Pensacola Bay Bridge
The U.S. 98 Pensacola Bay Bridge replacement project began in 2017 to address hurricane evacuation traffic needs. The replacement required PDA Testing on test piles and production piles. Data was assessed via CAPWAP® data analyses to provide simulated static load testing. Hurricane Sally interrupted construction in 2020, and potential damages to production piles were assessed using Low Strain Integrity Testing.
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