1. A 30cm long field sample is tested in a falling head permeameter with a 10 cm diameter cylinder. the diameter of the tube is 10mm. the water level in the tube is 35cm above the outlet level after one hour of operation, while the level drops to 22cm after 12 hours of operation. find the hydraulic conductivity of the sample

Q: Seepage is occurring through a porous media shown in fig. The hydraulic conductivity values (k1,k2,…

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Q: Q1: A field sample of an aquifer is packed in a test cylinder. The cylinder has a length of 120 cm…

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Q: 3.Two cylindrical soil specimens (A and B) are subjected to a modified constant head test as shown…

A: when specimen are perpendicular, the discharge flow is same for them.

Q: 1. A soil sample is collected at 20 °C and taken to the laboratory. The sample is in a stainless…

A: A soil sample in stainless steel cylinder is given with the weight of the cylinder and weight of…

Q: schematic of a constant head permeability test is shown below. The measured essures at points A and…

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Q: for the constant hea permeability test set-u shown in the following figure, the followin…

A: L =30 mArea if specimen = 175 sq. cm.Constant head difference = 50 cmVolume of water collected in 5…

Q: A pump out test is carried out in a perforated well of 30 cm in diameter, extending into an…

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Q: In a constant head permeability test, if the discharge coming out of the sample is 0.35 cm³/s find…

A: Discharge Q=0.35 cm3/sLength L=30 cm,Area A=250 cm2Head loss per unit length i = 0.25Coefficient of…

Q: 2.61. The following MPN test results were obtained for three water samples. Determine the MPN/100 mL…

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Q: A falling-head permeameter contains a sample of length 10 centimeters and diameter 4 centimeters.…

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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.