Videos/Animation
Integrity Testing – Crosshole Sonic Logging (CSL)
GRL Engineers perform csl testing to evaluate the integrity and relative concrete quality of drilled shafts. The test is performed after concrete has cured to determine potential anomalies.
Drilled Shaft Assessments – Bottom Cleanliness
GRL Engineers perform drilled shaft cleanliness assessments prior to concrete pour to determine the thickness of debris located at the bottom of an excavation shaft. These tests can be performed remotely or on-site and offer real-time data.
Dynamic Testing – PDA Services
GRL Engineers perform dynamic testing for driven piles using a Pile Driving Analyzer (PDA) and simulate static load tests with CAPWAP software to compare compression and tension stresses.
Load Testing – Static Load Capacity Assessments
Drilled Shaft Radius, Volume and Verticality Services with SHAPE
GRL Engineers, Inc., offer SHaft Area Profile Evaluator (SHAPE) services to measure and report the characteristics of a wet pour, drilled shaft excavation.
How Engineers Perform Dynamic Load Tests with Drop Weight Systems
Using APPLE drop weight systems, GRL Engineers can perform high strain dynamic load tests on drilled shafts and driven piles.
How Engineers Use Bi-Directional Static Load Testing with Pressurized Cells on Drilled Shafts
GRL Engineers use the Bi-Directional Static Load Test on deep foundations to determine load capacity.
Safe and Economical Dynamic Pile Monitoring
GRL Engineers perform Dynamic Pile Monitoring to obtain and evaluate driving system performance, driving stresses, pile integrity, as well as the soil resistance magnitude and resistance distribution.
Estimating Top-Load Movement and Base Resistance with Bi-Directional Static Load Testing
GRL Engineers offers bi-directional static load tests using a pressurized GRL-CELL.
How Engineers Monitor Pile Driving with the PDA
High strain dynamic load tests are performed by installing accelerometers and strain sensors on a pile and using a Pile Driving Analyzer (PDA) to monitor pile driving and hammer impact.
Assessing Drilled Shaft Integrity with Crosshole Sonic Logging
Concrete quality is tested by GRL Engineers using crosshole sonic logging (CSL) methods.
Crosshole Sonic Method (CSL)
GRL Engineers assess the concrete integrity of a drilled shaft using crosshole sonic (CSL) method. After the concrete has been poured, the probes are lowered into the shaft, and pulled simultaneously to scan the length of the shaft.