Why earthfill dam prefered over gravity dam?

1. AVAILABILITY OF EARTH MATERIALS. Earth is readily available in most parts of the world close to possible dam sites. Now a days the knowledge of soil mechanics has further enhanced the chances to make unstable earth dam as stable. 2. EASY HANDLING OF EARTH. read more

Earth fill dams are preferred for smaller dams. When the height of dam is more, normally Gravity dams are preferred. While selecting the type of dam, the availability of construction materials and cost are also considered.For earth fill Dam, availability of impervious soil for core of the dam is studied. read more