The shear strength of a material is defined as its ability to resist forces that cause the material's internal structure to slide against itself. Shear strength of a soil is the capacity of the soil to resist shearing stress. It is also very important in slope stability of earth embankments and retaining wall construction. It is a term used in soil mechanics to describe the magnitude of the shear stress that a soil can sustain. The shear resistance of soil is a result of friction and interlocking of particles, and possibly cementation or bonding at particle contacts. The shear strength of a material can be measured in either the vertical or horizontal direction. To better understand shear strength, consider lifting a horizontal stack of books by pressing them on both extreme ends (each hand acting as a support). The compressive force induced by squeezing the stack of books generates a frictional force between the books. This friction is a vertical force that keeps the books from sliding against each other and falling apart. The presentation will give better insight on the topic.

Aparna P

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