The Kosciuszko Bridge over Newtown Creek in Kings and Queens County, New York, which included a new 1.1 mile viaduct, required approximately 600 driven 18-inch OD steel pipe piles for the bridge pier and abutment foundations and 7-foot diameter drilled shafts for the main tower foundations and Pier 13 foundation.
Case Foundation/Keller engaged GTR to provide lateral load testing and Bi-Directional Load Testing of the demonstration shaft. The lateral load test was performed successfully to a test load over 400 kips by using the reaction from the existing abutment. GTR designed the lateral load test fame and evaluated the abutment to ensure that it could carry the large lateral load. Cross-hole Sonic Logging (CSL) and Thermal Integrity Profiling (TIP) were also performed by GTR to evaluate the drill shaft integrity.
Granite selected GTR to perform pile testing including dynamic pile load testing (PDA) on over seventy (70) test piles. GTR also instrumented and executed a comprehensive pile load test program including static compression load testing in accordance with ASTM standards and provided full-time on-site quality control throughout pile installation.
