Abstract
Soil tests for shear strength determination are summarized. The procedure for making undisturbed, pre-cut, slurried and slikenside samples are showen. Test methods for peak and residual shear strengthes on these samples in reversal direct shear test, triaxial test and ring shear apparatuses are discribed. The results of soil tests on samples of Sarukuyoji and Abekura landslide areas are also showen.
