Seismic Design Parameter Changes from ASCE 7-16 to 7-22

The upcoming ASCE 7-22 standard introduces a new Multi-Period Response Spectra (MPRS) that replaces the two-period response spectra in the ASCE 7-16 standard. Site soil classes have also been redefined from the ASCE 7-16 six site classes to nine new site classes; the new classes are based more strongly on the shear wave velocity than previously, which will favor performing shear wave velocity measurements on more sites. This presentation compares the previous site classes and design spectra from ASCE 7-16 with the new versions in ASCE 7-22 at locations across the United States. Additionally, comparisons of the design earthquake spectra from ASCE 7-16, ASCE 7-22, and site-specific probabilistic seismic hazard analysis for 30 sites in the Los Angeles Metropolitan Area will be provided.

• Course will award 1.0 hour of continuing education
• This course is Diamond Review approved in 49 states. New York does not accept hours from recordings.

Speakers:

Martin (Marty) B. Hudson, Ph.D., P.E., G.E.,  has over 30 years of industry experience covering a variety of building types, sizes and market sectors. Dr. Hudson is a Licensed Civil and Geotechnical Engineer. He has worked as a geotechnical engineer on some of the largest projects in California history, including the Wilshire Grand Tower and the LADWP Headworks Reservoir. He also has extensive experience with ground motion studies on many high-rise buildings, reservoirs, subway stations and tunnels, and hospital buildings, including base-isolated and damped structures.

Kenneth (Ken) Hudson Ph.D., P.G., E.I.T., is a specialist in geology, strong ground motions, and engineering seismology. Dr. Hudson began working in the industry in 2017 and then obtained a MS and PhD in Geotechnical Engineering. As a licensed Professional Geologist in the state of California, Dr. Hudson has worked on geologic, geotechnical, and seismic design aspects for high-rise buildings, rail transportation systems, hospitals, schools, and other public and private facilities in the greater Los Angeles Area and internationally.

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