Specific Gravity: 2.66 Length of specimen: 13.2 cm Diameter of specimen: 6.35 cm Determination of void ratio Volume of Specimen, V = D²L (cm²) Specific Gravity of soil, Gs Mass of specimen tube with fittings, W, (g) Mass of assembled tube, W2 (g) Dry density of specimen Pa %3D 4 238 966 W1-W2 V GSPW -1 Void ration of the specimen e = - 1 Pd Note: Pw = 1/cm² %3D

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Field applications of hydraulic conductivity

Hydraulic conductivity is one of the hydraulic properties of soil defined as a measurement of the ability of a porous medium to permit water movement or fluid flow through it. It is denoted by the letter K. It is influenced by the density and viscosity of the fluid. It is also called permeability. Hydraulic conductivity is defined as the ratio of velocity to the hydraulic gradient. The different methods used to determine the hydraulic conductivity are laboratory methods (constant head permeability tests and falling head tests), in-situ field methods (pumping in and pumping out tests), small scale field tests (infiltration tests and slug tests), and indirect methods such as estimation from grain size, consolidation test data, and horizontal capillary test. The pedotransfer function (PTF) method is a specific empirical estimating approach employed in the soil sciences is also used to determine the hydraulic conductivity of the soil.