Alpha and Bravo Wharf Improvements (Marinas)
- Aug 23, 2011
Extension and improvements were made to the wharf at Polaris Point in Guan to accommodate SSGN class submarines and support ships with a deeper draft. The project was constructed in two phases starting with the Bravo wharf, including back of wharf utilities and support facilities and then proceeding to Alpha wharf in order to keep one wharf operational for the Navy's use at all times.
The existing Alpha and Bravo wharves were upgraded through the construction of a new 1,371' sheet pile bulkhead that was offset and parallel to the existing wharves. The resulting annular space between the existing wharves and new sheet pile bulkhead wall was filled with 5,500 CY of lean concrete and capped by a 6'Wx9'H poured in place concrete beam using 3,000 CY of 5,000 psi concrete with ASTM 935 epoxy-coated steel reinforcement. The paving for the new Bravo extension was designed for 90T crane and 20T forklift loads. The Bravo extension received a 16" thick concrete deck slab which required 800 CY of 650 flex concrete.