The following data were obtained when a sample of medium sand was tested in a constant head permeameter:
Cross-section area of sample : 100 cm $^{2}$
Hydraulic gradient : 10
Discharge collected : 10 cc/s
The coefficient of permeability of the sand is

0.1 m/s

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0.01 m/s

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\times

^{- 4}

m/s

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\times

^{- 8}

m/s

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Solution

The correct option is C 1 $\times$ 10 $^{- 4}$ m/s
$k = \frac{Q}{i A} = \frac{10}{100 \times 10} \times 10^{- 2}$

$= 1 \times 10^{- 4} m / s$

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The following data were obtained when a sample of medium sand was tested in a constant head permeameter: Cross-section area of sample : 100 cm2 Hydraulic gradient : 10 Discharge collected : 10 cc/s The coefficient of permeability of the sand is

The correct option is C 1 × 10−4 m/sk=QiA=10100×10×10−2 =1×10−4m/s

The following data were obtained when a sample of medium sand was tested in a constant head permeameter:
Cross-section area of sample : 100 cm $^{2}$
Hydraulic gradient : 10
Discharge collected : 10 cc/s
The coefficient of permeability of the sand is

The correct option is C 1 $\times$ 10 $^{- 4}$ m/s
$k = \frac{Q}{i A} = \frac{10}{100 \times 10} \times 10^{- 2}$

$= 1 \times 10^{- 4} m / s$