The progress of work in low level method of mound construction is very slow.

Barge method of mound construction is economical.

In low level method of mound construction, the area of working is limited.

In staging method of mound cons-truction, the work is not interrupted even during stormy weather.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

requires skilled labour

requires low maintenance cost

requires less material

results in less damage due to gradual failure

mean range

maximum range

maximum rise

mean rise

2.5 m

4 m

5 m

7 m