Example: The piezometer tube gave three different readings at different times. The unit weight and coefficients of permeability are provided in the table. calculate 1. The direction of flow. Support your answer with proper explanation. 2. The elevation head, the pressure head, the total head, and the head loss at the top and the bottom of each layer. 3. The effective stress at the top and the bottom of each layer. 4. The minimum piezometer reading that will cause quick condition in soil 2. 3m 4m GL/WL Soil 2 Piezometer Tube Soil 1 Case-3 10m 3m 4m GL/WL Soil 2 Soil 1 Piezometer Tube Case-2 5m Soil layer K (m/sec) Ysat (kN/m²) Soil 1 Soil 2 3m 4m GL/WL Soil 2 0.75 x 10 2x107 Soil 1 21 19. Piezometer Tube Case-1 7m

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