Unified Soil Classification This system was originally developed by A.Casagrande (1940) and was used for airfield construction. Later it was slightly modified to make it applicable to other constructions like foundation, earth dams, etc. In this system, coarse-grained soils are classified on the basis of their grain size distribution and the fine-grained soils are classified … Continue reading What is Unified Soil Classification
Category: soil
Textural Classification of Soil
Textural classification of soil Soil occurring in nature are composed of different percentage of sand, silt, and clay. Classification of composite soil exclusively based on the particle size distribution is known as textural classification of soil. In this system of classification, a soil is given some textural names on the basis of the percentages … Continue reading Textural Classification of Soil
Permeability of Soil – Darcy’s law – Limitation, Coefficient of Permeability, Importance of Study of Seepage Analysis
Permeability of Soil Permeability is defined as the property of a porous material that permits the passage or seepage of water (or other fluids)through its interconnecting voids. A material having continuous voids is called permeable. Gravels are highly permeable, while stiff clay is the least permeable. 4 Importance Of Study Of Seepage Analysis The study … Continue reading Permeability of Soil – Darcy’s law – Limitation, Coefficient of Permeability, Importance of Study of Seepage Analysis
7 Factors Affecting the Permeability of Soil
7 Factors Affecting The Permeability of Soil Following are the 7 Factors Affecting The Permeability of Soil: 1) Size of particles The permeability varies approximately as the square of the grain size. The relationship is , where is the effective diameter of the soil particles in cm. From the above equation, we can say, the … Continue reading 7 Factors Affecting the Permeability of Soil
What is Uniformity Coefficient(Cu) And Coefficient of Curvature(Cc) of Soil
Uniformity coefficient(Cu) The uniformity coefficient is a measure of particle size range and given by the ratio of D60 and D10 size of particles. It is denoted by Cu. Thus, Cu = D60/D10 Where, D60 = Size of the particle corresponding to 60% finer and, D10 = Size of the particle corresponding to 10% finer. … Continue reading What is Uniformity Coefficient(Cu) And Coefficient of Curvature(Cc) of Soil
Pipette Method – For Sedimentation analysis
Pipette Method The pipette is a simple apparatus made of glass. It is used for drawing samples of soil suspension. In the pipette method, first of all, a suitable amount of oven-dried sample is mixed with distilled water. A suitable quantity of deflocculating agent is added to it. The mixture is then thoroughly shaken and placed … Continue reading Pipette Method – For Sedimentation analysis
Atterberg Limits( Liquid limit, Shrinkage limit, Plastic limit )-Consistency of soils
Consistency of soils Consistency is a term used to indicate the degree of firmness of soils. The consistency of natural soil is expressed qualitatively by terms such as soft, stiff, very stiff and hard. Consistency of soil can be expressed in terms Atterberg limits of soils Unconfined compressive strength of soils. Atterberg Limits The consistency of a remoulded … Continue reading Atterberg Limits( Liquid limit, Shrinkage limit, Plastic limit )-Consistency of soils