Final Design and Construction of Gibraltar Dam Strengthening

by Noel C. Wong, Woodward-Clyde Consultants, Oakland, United States,
Theodore B. Feldsher, Woodward-Clyde Consultants, Oakland, United States,
Robert S. Wright, Woodward-Clyde Consultants, Oakland, United States,
David H. Johnson, Woodward-Clyde Consultants, Oakland, United States,



Document Type: Proceeding Paper

Part of: Roller Compacted Concrete III

Abstract: The results of a 1983 safety evaluation of Gibraltar Dam indicated that the dam did not meet seismic safety standards. A remedial scheme involving the addition of a roller compacted concrete (RCC) gravity buttress against the downstream face of the existing dam was designed and constructed. This paper discusses the final design and construction, including features of the strengthening buttress, the RCC mix design and quality control program, construction facilities and methods, and experiences gained during this unusual construction project.

Subject Headings: Infrastructure construction | Concrete dams | Gravity dams | Construction methods | Dams | Concrete construction | Seismic design | Dam safety | Load and resistance factor design | Gibraltar

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