Publish and Present
A precast, prestressed concrete float was designed to serve as the end berth for the new Alaska Class Ferry (ACF) day boats at the Haines Ferry Terminal, Alaska. The ACF day boats planned to operate between Juneau, Haines, and Skagway are expected to enhance the loading/unloading operations through the use of bow and stern doors. The concrete float will enable loading/ unloading of the ACF without the need for complex operations during significant tidal fluctuations up to 30 feet (10 meters). The concrete float designed is 150 feet long (46 meters), 120 feet wide (36.5 meters), and 17.5 feet deep (5.3 meters). Two 140-foot-long (43 meters) transfer bridges provide access between the float and land. The float is held in position by a guide-pile dolphin system. The float will be entirely precast at an off-site plant, towed to site, and installed at its designated location. This paper is focused on discussing the important aspects of design and detailing of an entirely precast concrete float.