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Foundation Engineering

Active Pressure -V

The CBR value...

Question

The CBR value of a subgrade soil is 10 %. The wheel load is 3500 kg and tyre pressure is 5 kg/cm2. The constructed thickness of the pavement (in mm, correct upto one decimal place) should be
197.4

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Solution

The correct option is A 197.4
Given,
$P = 3500 k g C B R = 10 % p = 5 k g / c m^{2}$
Thickness of pavement,
$t = \sqrt{3500} {[\frac{1.75}{10} - \frac{1}{5 π}]}^{1 / 2}$
$= 19.74 c m$
$= 197.4 m m$

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