Which of the following stages are involved in the construction of under reamed piles?

Enlarging the stem of bore hole at the depth is done by using________

The Raymond standard pile is used primarily as a________

The pile spacing of each pile is taken as ______ diameter of the pile.

The dimension of the bulb in an under-reamed pile can be checked by ______

If a hammer is raised by steam and allowed to fall by gravity on top of the pile, it is called as________

In which of the following rule, the value of each pile is reduced by one-sixteenth?

The separation of Q at any stage of loading into Rp and Rf in cyclic test is based on experimental value found out by___…