
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.

Featured
Rehabilitating the Van Wyck Expressway
GRL Engineers proposed Dynamic Load Testing on micropiles for the Van Wyck Expressway. The initial micropiles were damaged and Thermal Integrity Profiling was utilized to assess the integrity of the alternate piles. CAPWAP Analysis was also provided after testing to further evaluate static pile capacity. Read more
Featured
Commuter Rail Station Expansion
Thermal Integrity Profiling using thermal wire and Crosshole Sonic Logging are compared in this North Carolina case study to determine differences in project time and cost between the two methods. The study was performed on a Commuter Rail Station which was awarded to Blythe Construction. GRL Engineers utilized both testing methods to confirm concrete quality in various shafts. Read more
Featured
Replacement Bridge Over Buffington Road and NFS Railroad
The SCDOT retained GRL Engineers to perform testing on a production shaft. Drilled shaft verticality and cleanliness were evaluated on the production shaft. Bi-Directional Static Load Testing was performed on the drilled shaft to determine the mobilized shaft resistance. Thermal Integrity Profiling to assess concrete integrity and shaft profile. Read more

I-77 Canton Bridge Structures

Bridge Abutment and Boardwalk at TI' awh ah dees Park

Central Florida Expressway SR 528 and SR 436 Interchange Reconfiguration

El Dorado National Forest Bike Trail

Rehabilitating the Van Wyck Expressway

Commuter Rail Station Expansion

SR23 First Coast Expressway

Lynch River Bridge Replacement

Northwest Railroad Bridge Project

Replacement Bridge Over Buffington Road and NFS Railroad

I-480 Valley View Bridge Deck Replacements

Lake Marion Greenway Trail Boardwalk

I-4 Ultimate

Harris County Toll Road Authority SH 249

Seattle Center Arena

Mukilteo Multimodal Ferry Terminal

Tri-State Tollway Mile-Long Bridge
In 2020, GRL Engineers were contracted to perform testing on the Mile-Long Bridge located in Willow Springs, Illinois. Various testing methods were performed to assess the concrete integrity including Crosshole Sonic Logging, Thermal Integrity Profiling, and Data Analyses.

North Madison Substation
GRL Engineers took on an investigative project on the North Madison Substation in Wisconsin, to analyze acceleration and stresses in non-uniform piles during vibratory driving. The test involved Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA) and the PDI-VIB Program.

1100 Broadway Avenue in Oakland
GRL Engineers were contracted to perform Dynamic Pile Monitoring with a Pile Driving Analyzer (PDA) and collect high-strain dynamic measurements using APPLE Load Testing. A CAPWAP Analysis was performed using the collected test data.