5.The diameter of a well is 300 mm and the depth of the aquifer is 20m. The radius of of circle of influence was found to be 135m. The coefficient of permeability of soil is 30 m/d. Calculate the drawdown of the well if the aquifer is a) confined, and b) unconfined. The yield required from the well in both the cases is 3000 cum/d.

5.The diameter of a well is 300 mm and the depth of the aquifer is 20m. The radius of of circle of influence was found to be 135m. The coefficient of permeability of soil is 30 m/d. Calculate the drawdown of the well if the aquifer is a) confined, and b) unconfined. The yield required from the well in both the cases is 3000 cum/d.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

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5.The diameter of a well is 300 mm and the depth of the aquifer is 20m. The radius of of circle of influence
was found to be 135m. The coefficient of permeability of soil is 30 m/d. Calculate the drawdown of the
well if the aquifer is a) confined, and b) unconfined. The yield required from the well in both the cases is
3000 cum/d.

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