Identifying, Evaluating, and Correcting Punching Shear Deficiencies in Flat Plate Construction

The 2021 collapse of Champlain Towers South in Surfside, FL has emphasized the importance of identifying, evaluating, and correcting punching shear deficiencies in flat plate construction. In practice, punching shear related cracking can be challenging to identify as cracking is usually concealed. Current and previous code equations are of limited use for evaluating the punching shear capacity of slabs with excessive top cover and low reinforcement ratios. This presentation describes approaches to screening for punching shear deficiencies, field evaluation of existing conditions, and punching shear strength evaluation. Also presented are cost-effective retrofits for strengthening slab/column regions where deficiencies have been identified.

• Course will award 1.25 hour of continuing education
• This course is Diamond Review approved in 49 states. New York does not accept hours from recordings

Speakers:

Andrea Shear, P.E., is an Associate Principal at Wiss, Janney, Elstner Associates, Inc. (WJE) in New York City. Since starting at WJE in 2003, she has performed field investigations and evaluations involving a broad range of construction materials, with a primary focus on renovation and repair of existing steel and concrete structures. She has designed structural and building envelope repairs, restorations, and modifications for adaptive reuse, as well as completed construction period services and special inspections associated with a variety of structures, including high rise and historic commercial and office buildings, parking structures, residential buildings, and civil infrastructure. She has a bachelor’s and master’s degree in Civil Engineer from the University of Michigan – Ann Arbor and is a licensed Professional Engineer in New York and New Jersey. She is a board member of the Structural Engineer’s Association of New York (SEAoNY) as well as the co-chair of the SEAoNY Codes and Standards Committee.

Matthew Fadden, Ph.D., P.E., joined WJE with ten years of experience in structural engineering research and consulting. His primary areas of expertise include the design, analysis, and evaluation of steel structures (hot rolled and cold formed) and reinforced concrete structures. Additionally, Dr. Fadden has expertise in structural evaluation using finite element modeling and structural testing. His experience also includes seismic design, structural vibrations, offshore structures, and litigation support. Prior to joining WJE, Dr. Fadden was a professor in the Department of Civil, Environmental, and Architectural Engineering at the University of Kansas. There, his research areas included modular systems and connections for steel buildings, bolted and welded connections, ancillary sign structures, structural vibrations, and additive manufacturing for civil infrastructure. Dr. Fadden has authored many technical publications in refereed journals and has given numerous conference presentations.

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