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Case Study ? Elliott Bay Marina Floating Moorage

by Craig S. Funston, Geiger Gossen Hamilton Liao, Engineers PC, Inc, Bellingham, United States,



Document Type: Proceeding Paper

Part of: Ports '92

Abstract:

The recently completed Elliott Bay Marina project in Seattle is one of the larger projects of this type in the country, with 1196 slips ranging from 32 feet to 60 feet, a floating fuel dock, and extensive visitor amenities. There were several unique aspects to the design of this project as compared to past practice in marina design. These include: Use of a comprehensive elastic analysis model, including piling of varying length and diameter, to develop member forces. Considerable differences in behavior and load distribution were achieved by fine-tuning pile layout with this model. The detailed model enabled definition of a loading envelope to bound designs and reduce structural cost. Use of a ramp system enabling nearly full compliance with regulations for Barrier Free Access, which require minimal slopes. This ramp system consisted of a 120 feet long bridge with a constant vertical uplift force applied at midspan by a submerged float, to minimize dead load reactions on the marina floats.

Subject Headings: Ports and harbors | Case studies | Underwater structures | Structural design | Structural analysis | Project management | Mooring | Washington | United States | Seattle

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