Which of the following can be assumed for design purpose of well curb?

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

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

___________ forms the most common type of deep foundation for bridges.

A disadvantage in using circular shape of well foundation is _______

The allowable pressure that is allowed inside the working chamber of pneumatic caissons is ___

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

Excavation of soil inside the well in river beds can be done by ____