Soil Mechanics : Properties and Behavious of Soil

Soil Mechanics deals with the study of soil, its behavior and application as an engineering material.

Karl Terzaghi (1948) is regarded as father of soil mechanics. He defined soil Mechanics as "the application of laws of mechanics and hydraulics to engineering problems dealing with sediments and other unconsolidated accumulations of solid particles produced by the mechanical and chemical disintegration of rocks regardless of whether or not they contain an admixture of organic constituent."

What is soil and how is it formed?

Soil is defined as the un-aggregated or un-cemented deposits of mineral and/or organic particles or fragments covering large portion of the earth's crust.

Soil is formed by weathering of rocks.

Soil Classification

On the basis of the grain size of the soil particles. 

Gravel: particles larger than 2 mm, but smaller than 63 mm as gravel. The particles larger than 63 mm  are denoted as stones.

Sand: particles smaller than 2 mm, but larger than 0.063 mm.

Silt: particles smaller than 0.063 mm and larger than 0.002 mm

Clay or Luthum: particles smaller than 0.002 mm,


The web-links on this page will lead you to lecture notes from distinguished faculties, authentic products and service providers in the areas of Soil Mechanics/Geotechnical Engineering around the world.

Quiz in Geotechnical Engineering

You can also select from the following links of solved examples to get prepared for your exams like GATE and GRE.

Excellent Calculators

Stress Transformation Calculator
Calculate Principal Stress, Maximum shear stress and the their planes

Calculator for Moving Load Analysis
To determine Absolute Max. B.M. due to moving loads.

Bending Moment Calculator
Calculate bending moment & shear force for simply supported beam

Moment of Inertia Calculator
Calculate moment of inertia of plane sections e.g. channel, angle, tee etc.

Reinforced Concrete Calculator
Calculate the strength of Reinforced concrete beam

Moment Distribution Calculator
Solving indeterminate beams

Deflection & Slope Calculator
Calculate deflection and slope of simply supported beam for many load cases

Fixed Beam Calculator
Calculation tool for beanding moment and shear force for Fixed Beam for many load cases

BM & SF Calculator for Cantilever
Calculate SF & BM for Cantilever

Deflection & Slope Calculator for Cantilever
For many load cases of Cantilever

Overhanging beam calculator
For SF & BM of many load cases of overhanging beam

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