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Seismic Rehabilitation of Seattle's Pier 69

by David Pierce, Peratrovich, Nottingham, and Drage, Seattle, United States,
Ronald E. Martinson, Peratrovich, Nottingham, and Drage, Seattle, United States,



Document Type: Proceeding Paper

Part of: Ports '92

Abstract:

The Port of Seattle, one of the largest on the west coast of North America, made a strong statement regarding their support for reusing existing structures when a decision was made to rehabilitate Pier 69, on Seattle's downtown waterfront, for their new headquarters. Because of its age and location, the pier provided an unusual challenge to the Port and its consultants. The Port hired Peratrovich, Nottingham, and Drage Inc. to design the seismic strengthening of the pier itself. To remedy the lack of seismic resistance in the 70-year-old pier, PN&D designed a new steel-pipe-pile supported concrete apron next to it. The structure relied on a development by PN&D, the 'spin-fin pile', to achieve the tension capacities required of the batter piles. The construction of this apron was completed in October of 1991. Another team of consultants performed the superstructure renovation design, which is now under construction.

Subject Headings: Seismic design | Seismic tests | Piers | Steel piles | Pipe piles | Load and resistance factor design | Rehabilitation | Seattle | Washington | United States | North America

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