Civil Engineering MCQAE Level Civil Engineering
Seepage pressure is expressed as (i = hydraulic gradient, Z = depth, γw = unit weight of water)
Soil MechanicsSoil MechanicsMEDIUM
Choose the correct answer
A
KiA
B
iZγw
C
∂²φ/∂x∂z
D
∂²φ/∂z²
Correct Answer
B. iZγw
Why is this the answer?
Seepage pressure p_s = i * gamma_w (per unit volume), where i = hydraulic gradient and gamma_w = unit weight of water (9.81 kN/m^3). Acts in the direction of seepage flow. Total seepage force on a volume = i * gamma_w * volume. Can cause piping (internal erosion) or quicksand when upward seepage pressure equals submerged weight. Seepage pressure is i gamma_w.
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.