How would we derive a solution for groundwater drawdown due to pumping near a river (i.e. a recharge boundary)? O a. This would have to be solved using a numerical scheme where the Laplace equation is discretised in space and time. O b. We would use the principle of superposition and an imaginary well located on the opposite side of the river at the same distance to the near bank as the pumping bore, and we would extract water from the imaginary well at the same rate. Oc. Instead of using the Theis solution, one would use the Jacobs approximation which can account for barrier or recharge boundaries. d. We would use the principle of superposition and an imaginary well located on the opposite side of the river at the same distance to the near bank as the pumping bore, and we would inject water from the imaginary well at the same rate as extraction from the real pumping bore. Clear my choice For drilling in an unconsolidated formation with a cable-tool drill rig, how do you remove the sediment from the borehole? a. Direct mud O b. Reverse circulation mud O c. Air-flush O d. A bailer Clear my choice

How would we derive a solution for groundwater drawdown due to pumping near a river (i.e. a recharge boundary)? O a. This would have to be solved using a numerical scheme where the Laplace equation is discretised in space and time. O b. We would use the principle of superposition and an imaginary well located on the opposite side of the river at the same distance to the near bank as the pumping bore, and we would extract water from the imaginary well at the same rate. Oc. Instead of using the Theis solution, one would use the Jacobs approximation which can account for barrier or recharge boundaries. d. We would use the principle of superposition and an imaginary well located on the opposite side of the river at the same distance to the near bank as the pumping bore, and we would inject water from the imaginary well at the same rate as extraction from the real pumping bore. Clear my choice For drilling in an unconsolidated formation with a cable-tool drill rig, how do you remove the sediment from the borehole? a. Direct mud O b. Reverse circulation mud O c. Air-flush O d. A bailer Clear my choice

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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