Electric Boat SYAB Spin Fin Design

The Design/Build Contractor, Skanska-Trevcon JV, retained GTR to provide driven Spin Fin dolphin foundation design and permanent bulkhead design services for this massive waterfront expansion. Our services included cost-saving re-design of permanent marine dolphin foundation systems.  GTR employed a Spin-Fin design concept replacing battered drilled shafts.  Spin Fins were successfully installed to significantly shallower depths demonstrating cost and schedule savings. 

GTR also performed Kingpile Bulkhead re-design services to optimized the king pile wall using drilled micropiles.  Additional services included performing Crosshole Sonic Logging (CSL), Cross-Hole Tomography (CT) and prepared drilled shaft remediation designs for drilled shafts indicating low quality concrete.

Project: Electric Boat South Yard Assembly Building – Design/Build

Client: Skanska/Trevcon Joint Venture

Owner: General Dynamics

Location: Groton, Connecticut

Year(s): 2020-21

Services: Permanent Bulkhead Re-design, Spin Fin Dolphin Design, Drilled Shaft Remediation