Unequal dredging of well causes _____

The common types of well shape are _____

Disadvantage of using pneumatic caissons are ____

The analysis of well foundation is done based on the assumptions of _____

For loose sand, the value of skin friction is between ____

Well are also called as ______

The essential feature of a pneumatic caissons are ______

The radius of the well curb should be kept _____ larger than the outside radius of well steining.