Observational Data on Ground Movements Related to Slope Instability

Abstract

I wish to thank the American Society of Civil Engineers for the privilege of presenting the sixth Terzaghi Lecture. For the past 20 yr I have been deeply interested in the measurement of ground movements related to slope instability. This topic appeared appropriate for this paper since much of my early interest was stimulated both by Terzaghi and by Casagrande, who was the second Terzaghi Lecturer. Indeed, the previous five Terzaghi lectures have each been closely related to slope stability problems of various types.