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January 21 - Concrete Shear Walls and Diaphragm Design


This presentation will cover Examples 1 and 7 from Volume 3. Example 1 addresses concrete shear walls, focusing on key concepts including: desired behavior of concrete walls, design for flexure, bar cut-offs and lap splices, design for shear, effect of gravity framing, detailing of wall boundaries, detailing of coupling beams, and wall stiffness. The presentation will draw on observations and lessons learned from past earthquakes, in addition to code requirements and recommendations from research. This presentation will also cover design of diaphragm, chords and collectors using a simplified approach, to comply with the requirements of IBC 2018. Conclusions based on the results are presented at the end of the example.

  • Course will award 1.5 hours of continuing education
  • Diamond Review approved in all 50 states
  • This webinar will be available as a recording.

Please note: This webinar is part of the Seismic Design Series and is not included in the NCSEA Webinar Subscription.


  • Karl Telleen, S.E.

    Karl, an Associate Principal at Maffei Engineering, has 15 years of professional experience, including a wide range of project types such as design of new steel and concrete structures, seismic evaluation and retrofit of existing buildings, seismic peer review of high-rise buildings, and design and analysis of solar arrays subjected to wind and seismic forces. He contributed to design guidelines and analysis approaches for solar arrays, including the SEAOC Solar Photovoltaic Systems Committee documents SEAOC PV1 (seismic design) and SEAOC PV2 (wind design). He has worked with manufacturers on product development of solar support structures, and he has performed technical investigations into wind-related failures.

  • Badri Prasad, S.E.

    Badri Prasad, S.E., has over 30 years of experience in the design of various types of structures, such as healthcare facilities, biotechnology facilities, mid- and high-rise structures, schools, and seismic retrofit, among others. He was a member of the SEAONC Seismology Committee’s concrete subcommittee and was instrumental in publishing the committee’s work titled “Concrete Slabas a Collector Element” in the 2008 SEAOC Blue Book. He is the project manager and author of two design guides, related to the design of concrete diaphragm and collectors, published by NCSEA. He has published several papers on buckling restrained braced frames and a research paper on base-isolation system.

January 21, 2021
Thu 12:00 PM CST

Duration 1H 30M

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