Drawdown is defined as the difference between the static water level and the dynamic water level at a certain time during pumping. For example, if the static water level is 10m and the dynamic water level after 20minutes is 12m, then the drawdown is (12m-10m) 2m after 20 minutes. Two boreholes (BH1 and BH2) in different areas were pumped. In BH1, the drawdown kept on increasing at about 0.005m per minute, while in BH2, the drawdown kept on increasing at about 5m per minute. BH may be drawing water from an aquitard, while BH may be drawing from an aquifer. BH is likely to have a higher transmissivity and BH is likely to have a cone of depression with a smaller radius. BH is likely to be recommended to supply water to a big community.

Drawdown is defined as the difference between the static water level and the dynamic water level at a certain time during pumping. For example, if the static water level is 10m and the dynamic water level after 20minutes is 12m, then the drawdown is (12m-10m) 2m after 20 minutes. Two boreholes (BH1 and BH2) in different areas were pumped. In BH1, the drawdown kept on increasing at about 0.005m per minute, while in BH2, the drawdown kept on increasing at about 5m per minute. BH may be drawing water from an aquitard, while BH may be drawing from an aquifer. BH is likely to have a higher transmissivity and BH is likely to have a cone of depression with a smaller radius. BH is likely to be recommended to supply water to a big community.

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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