Question

. It is required to dewater a construction site 80 m by 80 m. The bottom of the construction will be 1.5 m below the initial water surface elevation of 90 m. Four pumping wells (radius of each well is 0.5 m) are to be used and placed at the site four corners. The confined aquifer transmissivity and storage coefficient are 1,600 m²/day and 0.16, respectively. The site needs to be ready for construction after one month of pumping. Determine the required pumping rate to achieve the dewatering required. The points represented by “b” points are critical and govern the pumping rate. Use the Cooper –Jacob approximation. (15 points)

Answer 1