Abstract
Strong and watertight conditions are prime factors as to dam foundations. Fault and crushed zone arelarge deteriorated factors. One of the most important aims of geological survey is to find faults and cracks, and to evaluate fault conditions. Fault and crack effects on dam constructions are great and dependon dam types, scales and relative positions of faults and a dam.
It is a role of geologist to determine if the proposed dam sites should be abandoned or condemned, conducted appropriate treatment, or should be changed on dam type or scale, even after considerable geologicalinvestigations on the damsite.
The author has reviewed these themes on faults and cracks, faults and dam types, foundation treatmentsand active faults in view of dam constructions with several references, construction reports and hisexperiences.
