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West Point Temporary Construction Dock

by Chris Sundberg, CH2M HILL, Bellevue, United States,
Jerry Stubbs, CH2M HILL, Bellevue, United States,



Document Type: Proceeding Paper

Part of: Ports '92

Abstract:

The West Point temporary construction dock is designed to provide construction access for the West Point treatment plant project located in Seattle, Washington. The dock plays a major role in providing marine access to the secondary treatment construction project at West Point, which is estimated to cost approximately $500 million. The construction dock is built of commonly used materials in the Puget Sound area, which include prestressed concrete deck panels supported on precast concrete pile caps and steel pipe piles. The dock is designed to accommodate up to three 8,400-ton barges at once. The barges will handle bulk materials (concrete aggregates, earth excavation, and backfill materials), reducing the necessary truck traffic through Magnolia, a residential neighborhood that borders the project site. The dock features two berths designed for roll-on, roll-off (RO/RO) operation. These berths are equipped with air-operated floating transfer spans to allow off-road vehicular traffic (40-ton dump trucks) to access the construction site. Construction of secondary treatment facilities at West Point is scheduled over a five-year period ending in 1995. At that time, permit requirements dictate that the dock be dismantled.

Subject Headings: Docks | Concrete piles | Steel piles | Pipe piles | Steel construction | Steel pipes | Steel decks | Washington | United States | Seattle

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