uncertainty assessment of seismic site classification

seismic site classification is a critical subject for reliable seismic ground motion analysis. building codes have widely considered the shear wave velocity (v_s) to make a reliable subsoil seismic classification based on the knowledge of the mechanical properties of material deposits down to bedrock. this approach has limitations because geophysical data are often very expensive to obtain. this paper present a method for estimating the v_s of soil layers in unsampled location. for this purpose, first three boreholes drilled for determining geotechnical parameters. after obtaining v_s and other mechanical parameters of soil, using cokriging the v_s in unsampled location were estimated. for reliability assessment of seismic site classification the site studied as a several components together. finally, the seismic soil type of the site was specified.