WestCon Tribune

Candlestick Park 1984-1989,

The Unknown Secrets

Presented By: John Clinton, Interactive Resources and Paul Weir, Weir Andrewson Associates

 

The October program will cover events leading up to and immediately following the Loma Prieta Earthquake when Interactive Resources was retained by the Recreation and Parks division of the Public Works Department of the City and County of San Francisco to investigate the condition of the pre-cast concrete canopy panels prior to adding a roof membrane. Speakers John Clinton and Paul Weir were both with Interactive Resources at the time and worked on the project together.

Deficiencies were found in the connections attaching the panels to the roof girders and in other loaded connections, which could have precipitated partial collapse had repairs not been completed prior to the 1989 earthquake. 

In 1983, Interactive Resources was called upon by the City and County of San Francisco to provide a comprehensive investigation of the deterioration of structural and architectural components at Candlestick Park. The project included a detailed report on observations, recommendations, and test results, estimated construction costs for necessary repairs for an extended service life. The study determined that the stadium was in serious disrepair and recommended that the park be upgraded immediately to provide a higher level of resistance to potential seismic forces. Interactive Resources subsequently prepared contract documents for structural repairs and provided construction administration services.

The presentation will cover the interesting circumstances that are unique to working on a large public facility and how Westcon members Paul Weir and John Clinton worked together to resolve the issues at hand.

John Clinton is a founding principal of Interactive Resources. Both a structural engineer and an architect, he has more than 30 years experience providing review, design and renovation services. John directs the firm’s engineering review and structural and civil design services, including the structural design of major projects such as the Point Richmond Tech Center and Pacific Gas and Electric Company’s Richmond Service Center. He also leads structural design services for the firm’s specialized projects.

Paul Weir is now in Marin with his own company, Weir Andrewson Associates. Weir Andrewson was established in 1995 and provides comprehensive engineering and architectural services including structural engineering, architectural design, construction review, investigation and analysis of building failures.