About the author ⁄ Lawrence Burkett

Lawrence Burkett (lawrence@maffei-structure.com) is a Senior Structural Designer at Maffei Structural Engineering in San Francisco, CA.

FRP Column Retrofit for Mt. Zion Housing

Part 2

A recent seismic retrofit project provided an opportunity to test an interior concrete column retrofit with a three-sided, fiber-reinforced polymer (FRP) wrap with FRP through-anchors on the fourth side. The testing demonstrated the effectiveness of this application, which could be applied to columns or beams with deficient shear strength in situations where site conditions prevent access to one side of the member. Please refer to Part 1 (STRUCTURE, January 2022) for additional testing information.

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Feb, 2022 By Abby Enscoe, P.E., Marc Steyer, S.E., Aniket Borwankar, Mike Wesson, S.E., Ph.D., Lawrence Burkett, Joe Maffei, S.E., Ph.D. and Rachel Cohen, P.E. In Structural Performance Comments 0

Shear Strength Deficiencies in Concrete Columns

Part 1

Concrete buildings with vulnerable columns are some of the most dangerous structures when earthquakes occur. Since the 1970s, building codes have addressed the detailing of columns that are part of moment frames in high-seismic regions. Research for the Portland Cement Association [Blume et al., 1961] and subsequent studies in New Zealand established the need for close spacing of ties and a capacity design of frame members for shear strength sufficient to cause flexural yielding rather than undesirable shear failure.

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Jan, 2022 By Lawrence Burkett, Joe Maffei, S.E., Ph.D., Abby Enscoe, P.E., Marc Steyer, S.E., Mike Wesson, S.E., Ph.D. and Aniket Borwankar In Structural Performance Comments 0

Tour de Force for San Francisco International Airport

Performance-Based Design of the New Air Traffic Control Tower

Walter P Moore was an Outstanding Award Winner for its Air Traffic Control Tower and Integrated Facilities Building project in the 2016 NCSEA Annual Excellence in Structural Engineering Awards Program in the Category – New Buildings over $100M. …

Jan, 2017 By Rafael Sabelli, S.E., Joe Maffei, S.E., Ph.D., Susendar Muthukumar, Ph.D., P.E. and Lawrence Burkett In Articles, Spotlight Comments 0

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