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Accounting for Structural Irregularities in Seismic Design by ASCE 7-16/2015 IBC, 2018 IBC, with a Preview of ASCE 7-22 Changes

by S. K. Ghosh, Ph.D.

September 10, 2020 October 7, 2020; 11:00 AM - 1:30 PM Pacific Time

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ICC Preferred Provider #1467 ICC Preferred Provider Course Number: 15733

Receive a 15% discount on any of our products when purchased with a seminar registration.

Seminar Description

Have you ever wondered if your building has an undetected irregularity and if there are code provisions that were not applied but should have been? This web seminar will put those fears to rest because the seminar thoroughly covers each type of horizontal and vertical irregularity defined in ASCE 7-16. The definitions are explained in detail with illustrations. The many code provisions that are triggered when a particular type of horizontal or vertical irregularity exists are next discussed in detail. The provisions range from 1) requiring that dynamic, rather than equivalent static, analysis be used as the basis of design to 2) requiring that structures with certain structural irregularities not be built beyond a certain height or not be built at all, if they are assigned to high seismic design categories to 3) setting redundancy factor equal to 1.3 because of an extreme torsional irregularity. The background to these requirements is provided, whenever practicable and reasons why buildings need to be penalized for structural irregularities are explained. Frequently asked questions and answers on the identification of structural irregularities and how they affect the design of the structure are also presented. Any changes in structural irregularity provisions to be made in ASCE 7-22, which will be adopted by the 2024 IBC, are noted. The web seminar includes three question-and-answer periods.
The views and opinions expressed in this seminar are those of the speaker(s) and do not necessarily reflect those held by S. K. Ghosh Associates LLC.

Speaker Bio

Dr. S. K. Ghosh is known internationally for his work in earthquake engineering. He has influenced seismic design provisions in the United States for many years by serving on or chairing numerous committees and advisory panels. He specializes in the analysis and design, including wind and earthquake resistant design, of reinforced and prestressed concrete structures. Dr. Ghosh is active on many national technical committees and is a fellow of ASCE, SEI, ACI, and PCI. He is a member of ACI Committee 318, Standard Building Code, and the ASCE 7 Standard Committee (Minimum Design Loads for Buildings and Other Structures). He is a former member of the Boards of Direction of the Building Seismic Safety Council (BSSC), the American Concrete Institute (ACI), and the Earthquake Engineering Research Institute (EERI). In addition to authoring many publications in the area of structural design, he has investigated and reported on structural performance in recent earthquakes.

Registration Information

1 Connection Each Additional Connection
Early Registration Discounted Fee* $260 $60
Regular Fee $275 $65
* Registration on or before October 5, 2020
Please note a single registration allows you to have one connection. However, a number of people can view and listen to the seminar using one connection by using an LCD projector (or a large computer monitor) and good computer speakers or a speaker phone. All attendees, irrespective of the number of registered connections, can earn 0.25 Continuing Education Units (CEUs) or 2.5 professional development hours (PDHs). CEU/PDH certificates are provided free of charge.
Small Business Registration

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Small Business Benefits and Eligibility


  • A connection is defined as a single web connection plus a single telephone connection (if necessary). If you want to sign up for more than one connection for this seminar, you will have the opportunity to do so after placing the seminar in your cart.
  • A $15 fee will apply if the seminar registrant wishes to revise the web seminar registration (e.g. switch from one web seminar to another).
  • Refunds are limited to 80 percent of fee and must be applied for in writing WITHIN THIRTY DAYS after the scheduled seminar.
  • We are a registered provider for continuing education in the State of Florida (Provider # 4732), the State of New York (Provider # 99), the State of New Jersey (Provider # 24GP00014200), the State of Maryland, and for the Structural Engineers Certification Board (SECB) of the National Council of Structural Engineers Associations (NCSEA).