Geotechnical and geological engineering has wide applications in military, mining, petroleum, natural geohazard and other engineering disciplines that are concerned with stability of the ground and construction occurring on the surface or within the ground. It uses principles of soil mechanics and rock mechanics to investigate subsurface conditions in order to evaluate stability of natural slopes and man-made deposits, assess risks posed by site conditions, design earthworks and structure foundations, and monitor site conditions, earthwork and foundation construction. Determination of the relevant physical, chemical and mechanical properties of ground materials is the key to successfully deliver such projects. Therefore, a book containing both theory of geomaterial testing and up-to-date testing methods is much in demand to college students, academic researchers and practicing technicians and engineers for obtaining reliable and accurate test results. This book is intended primarily to serve this need and aims at the clear explanation, in adequate depth, of the fundamental principles of soil and rock tests <...>