(a) Determine the probability of seismic-induced liquefaction occurring at the 10-foot depth in a sand soil formation for the following conditions:—the site is underlain by clean sands (less than...

(a) Determine the probability of seismic-induced liquefaction occurring at the 10-foot depth in a sand soil formation for the following conditions:—the site is underlain by clean sands (less than 5-percent fines),

—the groundwater table is at the 5-ft depth,

—the corrected SPT blow count for the sand in the upper 15-ft zone is 22,

—the wet unit weight of the sand is 115 pcf,

—the seismic probability map for the sitearea indicates a peak ground acceleration equal to 0.30 g for a magnitude 7.5 event.

Use Equation 27 and Figures 23 and 24(a) as references.

(b) Would liquefaction be expected to occur at the 10-ft depth during a magnitude 6.5 seismic event?