Question

The process of laying and compacting earth in layers by power rollers under OMC for construction of earthen dams is known as ______________________

(a) Rolled fill method

(b) Hydraulic fill method

(c) OMC method

(d) Compaction

I have been asked this question in examination.

The query is from Types of Earthen Dams in section Earthen and Rock Fill Dams of Irrigation Engineering

Answer 1

Correct option is (a) Rolled fill method

For explanation I would say: In the rolled-fill method, the embankment is constructed by placing suitable soil materials in thin layers and compacting the layers with rollers. Power-operated rollers are used for dams and ordinary road rollers can be used for low embankments. The best compaction can be obtained at the optimum moisture content (OMC).