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Blue Prynt Restaurant
815 11th St.
Sacramento, CA 95814

View additional information#/id/i10791964
Thursday, October 25, 2018, 6:00 PM - 8:30 PM PDT
Category: Regional Dinner Meeting

NorCal Regional Dinner Meeting - Fall 2018

Please join us on Thursday October 25th for our Northern California regional dinner meeting.

Presenter: Dr. Jonathan D. Bray, Ph.D., P.E., NAE, Faculty Chair in Earthquake Engineering Excellence, University of California, Berkeley

Jonathan Bray is the Faculty Chair in Earthquake Engineering Excellence at the University of California, Berkeley.  He earned engineering degrees from West Point, Stanford, and Berkeley.  Dr. Bray is a registered professional civil engineer and has served as a consultant on several important engineering projects and peer review panels. He has authored more than 300 research publications.  His expertise includes the seismic performance of earth structures, seismic site response, liquefaction and ground failure and its effects on structures, earthquake fault rupture propagation, and post-event reconnaissance.  Dr. Bray was elected into the National Academy of Engineering and is a Fellow in ASCE. He has received several other honors, including the Peck Award, Joyner Lecture, Prakash Award, Huber Research Prize, Packard Foundation Fellowship, and NSF Presidential Young Investigator Award.

Evaluation of Liquefaction-Induced Building Settlement

Significant settlement and damage may occur due to liquefaction of soils beneath shallow-founded buildings. Liquefaction-induced settlement of buildings on shallow foundations requires evaluation of shear-induced, volumetric-induced, and ejecta-induced ground settlement mechanisms. There are simplified procedures available for estimating volumetric-induced settlement, which are largely due to post-liquefaction one-dimensional reconsolidation settlement for free-field conditions. However, there are few well-established simplified procedures for estimating shear-induced building settlement due to liquefaction. Nonlinear dynamic soil-structure interaction (SSI) effective stress analyses can capture this mechanism (e.g., Luque & Bray 2017). It is the basis for a recently developed procedure by Bray & Macedo (2017) for estimating the shear-induced component of liquefaction-induced building settlement. The liquefaction-induced building settlement (LBS) index characterizes the cyclic shear strain potential of the soils underlying the structure to estimate shear-induced liquefaction building settlement. The Bray & Macedo (2017) procedure is shown to provide estimates of liquefaction-induced building settlement consistent with those observed. Thus, it offers engineers a reliable simplified procedure for estimating liquefaction-induced building displacements. The Bray & Macedo (2017) simplified procedure is discussed and applied to a field case history to provide insights in this talk.


$45 CalGeo Members/$60 Non-members

Registration deadline is October 22nd - must be registered on-line to attend!

Includes dinner and hosted bar (Thank you sponsors!)


Thank you to the following sponsoring organizations - click on their image below to visit their website:



Contact: Kelly Cabal, [email protected] (949) 391-2436 with any questions.