Single acting hammers provide an advantage in ______ type of soil.

The result of Dutch cone penetration test can be applied to determine _____

In the process of pile foundation, boring is done with the help of _____

The type of cased piles used in soil, where the driving is very hard?

In dynamic formulae what are the energy losses, that is not accounted?

Which of the following pile is used, when the ground is soft?

Piles are commonly driven in to ground by means of special device called ______

The efficiency of pile group depends upon ______