A soil layer consists of 4m upper layer of dry sand have a Gs= 2.64 and a void ratio of 0.53 and a lower layer is a clay having a void ratio of 1.0 and a specific gravity of 2.75. The effective stress at the bottom of the clay layer is equal to 93.46 kPa when the ground water is table is 4m below the ground surface. What is the thickness of the clay layer?

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Sediment transport

Sediment transport or Soil transport is the movement of solid particles, usually due to the combination of gravitational forces acting on the sediment, and the movement of the liquid at which the sediment enters. Soil erosion occurs in natural systems where the particles are sandstones (sand, rocks), mud, or clay; the liquid is air, water, or ice; and the gravitational force that works to move particles to the landing surface. Sediment transportation or soil migration due to the movement of liquids occurs in rivers, lakes, lakes, oceans, and other bodies of water as a result of currents and waves. Transportation is also caused by glaciers as they flow, and to places on earth under the influence of wind. Soil erosion due to gravity alone is possible in most sloping areas, including hills, scarves, cliffs, and the continental shelf — the continental boundary of the slope.