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Question

A seepage flow condition is shown in the figure. The saturated unit weight of the soil γsat=18 kN/m3. Using unit weight of water, γw=9.81 kN/m3, the effective vertical stress (expressed in kN/m2) on plane X-X is


  1. 65.475

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Solution

The correct option is A 65.475
Force = hvγw

hL atXX=36×5=2.5γw

Effective stress at X - X ,

= 5γsub+2.5γw

= 5(18 - 9.81)+2.5 × 9.81

= 65.475 kN/m2

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