Well are also called as ______

The maximum depth of scour at the nose of pier is ___ Lacey’s value.

A sharp vertical edge for the well is provided at _____

To avoid the setting of the cutting edge unevenly, _______ can be introduced.

Advantage of using pneumatic caissons are _____

The grip length of well is taken as _____ below the scour level in roads.

Laying of the well curb in river bed having water, is done by _____

The limiting head of water value in pneumatic caisson is ____