Nicholas Sitar, the Edward G. Cahill and John R. Cahill Professor of Civil and Environmental Engineering, delivered the 20th Jack W. Hilf Memorial Lecture at the University of Colorado, Boulder.
His topic, "Seismically Induced Lateral Earth Pressures: If not Mononobe-Okabe, then what?", covered the latest results from centrifuge model studies and recent observations in large earthquakes, and their implications for a rational seismic design of retaining structures and basement walls.
The Hilf lecture is one of the main annual geotechnical events in Colorado. There have been 20 lectures to date by prominent geotechnical engineering leaders.