Geomechanics is the study of the mechanical behaviour of geological material, namely rocks and soils. The understanding of these concepts is crucial owing to the importance of these materials in the stability of supported structures. This 20 credit module, spanning both TB1 and TB2, introduces the fundamental theory associated with the mechanical properties of both forms of geological material. On completion of this module, the student will be prepared to look at further advanced topics in Geomechanics II.