2025.05.02 & 2025.05.03 – 2025 Pacific Northwest Geotechnical Graduate Student Symposium at Portland State
Portland State hosted Oregon State University and the University of Washington geotechnical students for this 2-day event! Friday afternoon and evening consisted of a site tour of the Burnside Bridge. An enormous thank you to Stacy Thomas (HDR), Beth Britell (Multnomah County), Sam Sideras (Shannon & Wilson), and Carly Clark (HDR) for taking the time to help us organize the tour and talking us through the massive undertaking that is the Earthquake Ready Burnside Bridge project!
The tour was followed by a poster session, where over 10 different companies attended and learned about the research happening throughout the Pacific Northwest. Saturday consisted of technical and small-group sessions designed to increase networking skills, highlight effective presentation techniques, and facilitate inter-university communication on shared topics such as laboratory research or field work.

2024.11.15 – 2024 PSU Geotechnical Graduate Student Symposium
Geotechnical graduate students hosted a symposium showcasing their research to over 30 industry professionals, representing both public and private interests. Poster and presentation titles are listed below.
Amir Barati-Nia
Presentation: SHANSEP vs. Recompression for Intact Cyclic DSS Testing
Poster: Characterization of Low-Plastic Silt Behavior Through Direct Simple Shear Test
Sal Beltran
Poster: Critical State Line-Based Interpretation of CPTu Data and Uncertainty Quantification for Standard and Non-Standard Soils
Chelle Guckenheimer
Poster: Characterizing the High-Stress Critical State Line of Ottawa F-65 Sand
Benyamin Jalilnavaznovin
Poster: Pile-Supported Wharves Subjected to Combined Inertial Loads and Lateral Ground Deformations
Earl Parrott
Presentation: Centrifuge Test of Pile-Supported Wharf Subjected to Inertia and Lateral Ground Deformation
Poster: Seismic Response of Pile Supported Wharf subjected to Liquefaction Induced Lateral Spreading
Kayla Sorenson
Presentation: Microbially Induced Desaturation Five Years After Treatment
Poster: Cyclic Shear Behavior and Longevity of Microbially Induced Desaturation in Liquefiable Silty Soil
Ana Tijerina Esquino
Presentation: ASCE Oregon Infrastructure Report Card
Poster: Enhancing Seismic Resilience of Fuel Storage Infrastructure in Oregon
Fadzai Zivanai
Poster: Evaluation of Microbially Induced Desaturation (MID) Gas Longevity in Liquefiable Silty Soils


















Photo Credit: Shea Ashurst
2024.05.17 & 18 – 2024 Northwest Geotechnical Graduate Student Symposium
PSU GIGSO members attended the 2024 Northwest Geotechnical Graduate Student Symposium at Oregon State University on May 17 and 18, 2024. Student members Chelle, Benyamin, Amir, and Kayla presented their research to other graduate students from Oregon State University and the University of Washington.
Students toured the ongoing Van Buren Bridge Project, Oregon State University’s O.H. Hinsdale Wave Research Laboratory (including the large wave flume, the directional wave basin, and strong floor structural research laboratory), and the Oregon State University geotechnical field research site.



