THE AUTHOR'S ANSWER TO DISCUSSION BY MASAHIDE MURAKAMI

The authors thank Prof. Masahide Murakami for his discussion, and the answers are as follows ;1) Cohesion, angle of internal friction and shear band caused by localized strain are not influenced by the size of specimen. So the scale effect between mud wall and element specimen is considered.2) In general, shear capacity of soil is expressed by cohesion and angle of internal friction based on Mohr-Coulomb failure criterion in soil mechanics. We have proposed the method to estimate the cohesion and the angle of internal friction of wall clay from the element tests easily. So it is important to use this method for the estimation of the relationship between lateral loading and deformation of mud wall.