Structural Investigation of Marina Del Rey Seawall

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by Stephen B. O'Neill, Concept Marine Associates, Inc, Marina Del Rey, United States,

Document Type: Proceeding Paper

Part of: World Marina '91

Abstract: The Marina del Rey Seawall was constructed by various contractors between 1959 and 1961. It is composed of 660 panels totaling 39,600 linear feet. The seawall configuration is a type normally found in dry land construction. The wall panels consist of a nine foot high cantilevered retaining wall on top of a one foot thick base slab. A construction joint between the cantilevered wall and the base slab occurs at one half foot above the top of the base slab. The wall system worked well until February 1986, when a sixty foot section collapsed. An investigation was conducted to identify panels in substandard condition, prioritize the panels for repair, and establish a long range program to monitor the condition of the wall panels to prevent any further failures. The paper reports on the work conducted, the tests performed and results obtained. It was recommended to install a Cathodic Protection system on the entire seawall and begin a program of bracing based on priority system.

Subject Headings: Sea walls | Retaining structures | Ports and harbors | Panels (structural) | Slabs | Construction management | Structural failures | Cathodic protection | North America | California | United States

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