Liquefaction during 1906 San Francisco Earthquake

by T. Leslie Youd, (M.ASCE), Research Civ. Engr.; U.S. Geological Survey, Menlo Park, Calif.,
Seena N. Hoose, Physical Sci. Technician; U.S. Geological Survey, Menlo Park, Calif.,


Serial Information: Journal of the Geotechnical Engineering Division, 1976, Vol. 102, Issue 5, Pg. 425-439


Document Type: Journal Paper

Errata: (See full record)

Abstract: Liquefaction-induced ground failures caused major damage during the 1906 San Francisco earthquake. An analysis of published reports shows that lateral-spreading landslides were the most pervasive and most damaging type of ground failure associated with liquefaction. Bridges, roadways, pipelines, and buildings suffered considerable damage. Pipeline failures were particularly critical in San Francisco, cutting off the water supply to the city and thus indirectly contributing to the substantial post earthquake fire damage. Flood plain, deltaic, and loose sand fill deposits were particularly vulnerable to lateral spreading failure. Recent borehole data from four lateral spreading locations show that loose, saturated sand underlies each site at shallow depths. Flow landslides developed on several sandy slopes but did little damage because of sparse development in the affected areas. No clear evidence of bearing capacity failures beneath buildings was found; however, settlement of several embankments may have been a consequence of liquefaction. In several instances ground failures caused by liquefaction have recurred at the same location during successive large earthquakes.

Subject Headings: Failure analysis | Soil liquefaction | Pipe failures | Earthquakes | Damage (structural) | Landslides | Pipelines | Saturated soils

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