We develop a general model for predicting the earthquake-induced displacements.

The prediction model is a function of peak ground acceleration (PGA) and mean period (T_m).

For shallow failure, the PGA and T_m of incident motion is directly used in the model.

For deep failure, the k_max and T_m,k representing the dynamic response of flexible sliding block is used in lieu of PGA and T_m.

k_max and T_m,k is estimated depending on the natural period of sliding mass (T_s).