Foundation investigations for arch dams generally must be accomplished in more exacting detail than for other dam types because of the critical relationship of the dam to its foundation and to its abutments. This course discusses the procedures which are commonly followed in accomplishing each phase of these investigations including the foundation analysis. This information is very useful in forming the basis for a very preliminary appraisal of site adequacy and also serves as the basis for initiation of the succeeding phase of the investigation. Course Outline 1. INTRODUCTION 2. SITE SELECTION INVESTIGATIONS 3. GEOLOGICAL INVESTIGATIONS OF SELECTED DAM SITE 4. ROCK MECHANICS INVESTIGATIONS 5. ROCK MECHANICS ANALYSES This course will give design and construction professionals an introduction to foundation investigations for concrete arch dams.

Learning Objectives

• Learn how to conduct surface and subsurface investigations;
• Learn the importance of core borings;
• Learn the applications of rock core logs;
• Learn how bore hole logging should be undertaken;
• Learn how to apply geophysical surveying techniques;
• Learn when groundwater investigations are needed;
• Learn the importance of adits; and
• Learn about the Rock Mass Rating System.