Wednesday, June 10, 2026
The following button will take you to the external registration portal.
Speakers
Liquefaction Downdrag
Moderator:
Miriam
Smith,
Ph.D., P.E.
Condon-Johnson
and Associates
Presenter:
Timothy
Siegel, P.E., G.E.,
BC.GE
Dan Brown and
Associates
Many engineers greatly over-estimate downdrag on piles and rigid inclusions due to liquefaction. The result costs clients millions of dollars in over-designing the foundation elements. A Caltrans document exists that is not appropriate. Sandy soils may undergo compression during liquefaction. The actual response is discussed in the light of the unified pile design method and separated between liquefaction occurring above and below the static (i.e., non-liquefied) neutral plane. In the former case, the effect...
Professional Development Hours (PDHs)
Each webinar in the series provides 1.5 Professional Development Hours (PDHs) to registrants who have paid the $70 fee. Certificates will be generated after the registrant completes the webinar evaluation through the event module. To receive a certificate you MUST register independently, be paid in full, and login and view the webinar for the duration of the event.