Example Problems

Example Problem 1: A soil profile consists of:

Calculate the effective stress at the bottom of the clay layer (8 m depth).

Example Problem 2: Determine the critical hydraulic gradient for a sand deposit with $e = 0.70$ and $G_s = 2.65$.

Example Problem 3: A saturated soil layer is subjected to upward seepage flow. The soil has a saturated unit weight of $19.5 \, kN/m^3$, and the thickness of the soil layer is $4 \, m$. A standpipe piezometer installed at the bottom of the layer shows a water level $1.5 \, m$ above the ground surface. Calculate the effective stress at the bottom of the layer and determine if boiling occurs. Assume unit weight of water is $9.81 \, kN/m^3$.