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f. Assuming a porosity of 18% for the sandstone, what is the seepage velocity for that unit? g. How long does it take for water to travel 1.6 km (1 mi) in the sandstone aquifer assuming the effects of pumping are minimal?

f. Assuming a porosity of 18% for the sandstone, what is the seepage velocity for that unit? g. How long does it take for water to travel 1.6 km (1 mi) in the sandstone aquifer assuming the effects of pumping are minimal?

Structural Analysis
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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3. a. If an artesian aquifer is intercepted by a wel 36.6 m (120 ft) deep and the water rises in a stand- pipe to a height of 3 m (10 ft) above the ground surface, how many meters (feet) of artesian pres- sure exist for this well? b. What type of well is it? gric. What was the pressure in kg/m² (psf and psi) for alove the water in the aquifer before entering the well? d. If the piezometric pressure in the aquifer is an reduced 4.6 m (15 ft) for every 1.6 km (1 mi) of horizontal distance, what is the hydraulic gradient for the aquifer? e. If the hydraulic conductivity of the sandstone is 4.7 m/day (15.3 ft/day), what is the average velocity of flow through the sandstone?
Transcribed Image Text:3. a. If an artesian aquifer is intercepted by a wel 36.6 m (120 ft) deep and the water rises in a stand- pipe to a height of 3 m (10 ft) above the ground surface, how many meters (feet) of artesian pres- sure exist for this well? b. What type of well is it? gric. What was the pressure in kg/m² (psf and psi) for alove the water in the aquifer before entering the well? d. If the piezometric pressure in the aquifer is an reduced 4.6 m (15 ft) for every 1.6 km (1 mi) of horizontal distance, what is the hydraulic gradient for the aquifer? e. If the hydraulic conductivity of the sandstone is 4.7 m/day (15.3 ft/day), what is the average velocity of flow through the sandstone?
f. Assuming a porosity of 18% for the sandstone, what is the seepage velocity for that unit? g. How long does it take for water to travel 1.6 km (1 mi) in the sandstone aquifer assuming the effects of pumping are minimal?
Transcribed Image Text:f. Assuming a porosity of 18% for the sandstone, what is the seepage velocity for that unit? g. How long does it take for water to travel 1.6 km (1 mi) in the sandstone aquifer assuming the effects of pumping are minimal?
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