1. Assume that a town has proposed to abstract water for supply from nearby river. Outline the data that they would be require. 2. In the design of a borehole, the radius of influence R cannot be established precisely and, therefore, is commonly assumed to be 200 m. For a well of radius, rw = 250 mm and transitivity T = 0.0208 s-1 that is to supply 15 m/hr, determine: i. Drawdown below which the pump must be placed ii. The percentage error in drawdown if the correct radius of influence was 300 m. 2.72TZW Assume the borehole yield QG) %3D log10R/rw

1. Assume that a town has proposed to abstract water for supply from nearby river. Outline the data that they would be require. 2. In the design of a borehole, the radius of influence R cannot be established precisely and, therefore, is commonly assumed to be 200 m. For a well of radius, rw = 250 mm and transitivity T = 0.0208 s-1 that is to supply 15 m/hr, determine: i. Drawdown below which the pump must be placed ii. The percentage error in drawdown if the correct radius of influence was 300 m. 2.72TZW Assume the borehole yield QG) %3D log10R/rw

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter8: Stresses In A Soil Mass

Section: Chapter Questions

Problem 8.14P

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