The bearing capacity of sandy soil depends upon the width of foundation. The width of plate is 5 times less than width of pit. That’s why……..

Rankine and Coulombs theory are applicable only for rigid retaining walls rotating about base.

Sheeting and Bracing system are flexible (not rigid) and rotation takes place at the top of the wall.

1. Soil must not be fail in shear.
2. Settlement must be within safe limits.

Unyielding Means Wall is at rest. So, calculate Earth pressure at rest. (Yeilding is restrained = Earth pressure at rest)

• Name of project
• Name of Boring
• Name of Sampling
• Date of Sampling etc.

Percussion Drilling (For boring in Rocky area such as construction of bridge over river)

Due to Zone of Influence.

• Use of Pile Foundation
• Use of Pier/Well Foundation
• Use of Mat Foundation
• Soil Improvement Techniques