GATE Civil Engineering (CE) 2020 Shift 2 Solved Paper

Question : 38 of 65

Marks: +1, -0

Permeability tests were carried out on the samples collected from two different layers asshown in the figure (not drawn to the scale). The relevant horizontal (kh) and vertical (kv)coefficients of permeability are indicated for each layer.

The ratio of the equivalent horizontal to vertical coefficients of permeability, is

$37.29$
$68.25$
$80.20$
$0.03$

Validate

Solution:

\;{ {\keq}_{ {\H}}}/{ {\keq}_{ {\v}}}={4.4 × 10^{-3} × 3+6 × 10^{-1} × 4}/7/7/{3/{4×10^{-3}}+4/{5.5×10^{-1}}

= 37.29

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