A pumping well test was made in sands extending to a depth of 15 m where an impermeable stratum was encountered. The initial ground-water level was at the ground surface. Observation wells were sited at distances of 3 and 7.5 m from the pumping well. A steady state was established at about 20 hours when the discharge was 3.8 L/s. The drawdowns at the two observation well were 1.5 m and 0.35 m. Calculate the coefficient of permeability.

A pumping well test was made in sands extending to a depth of 15 m where an impermeable stratum was encountered. The initial ground-water level was at the ground surface. Observation wells were sited at distances of 3 and 7.5 m from the pumping well. A steady state was established at about 20 hours when the discharge was 3.8 L/s. The drawdowns at the two observation well were 1.5 m and 0.35 m. Calculate the coefficient of permeability.

Structural Analysis

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ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

A pumping well test was made in sands extending to a depth of 15 m where
an impermeable stratum was encountered. The initial ground-water level was at the
ground surface. Observation wells were sited at distances of 3 and 7.5 m from the
pumping well. A steady state was established at about 20 hours when the discharge
was 3.8 L/s. The drawdowns at the two observation well were 1.5 m and 0.35 m.
Calculate the coefficient of permeability.
qxloge (2)
πx(h²-h²)
K=
K =
qxlog₁0
2.727xHx(h₁-h₂)

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