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nika2105 [10]
3 years ago
15

At a lake location, the soil surface is 6 m under the water surface. Samples from the soil deposit underlying the lake indicate

a wet unit weight of 18.8 kN/m3. Determine the effective and total vertical stresses in the deposit at a depth of 12 m below the soil surface.
Engineering
1 answer:
777dan777 [17]3 years ago
6 0

Answer:

The effective stress is 225.6 kN/m²

The total vertical stress is 338.4 kN/m²

Explanation:

Given;

depth of soil surface = 6m

weight unit of the soil samples = 18.8 kN/m³

Stress = force/area

Stress = unit weight x depth

Effective stress at a depth of 12 m below the soil surface:

= (18.8 kN/m³) x (12 m)

= 225.6 kN/m²

Effective stress = 225.6 kN/m²

Total vertical stress at a depth of 12 m below the soil surface:

= (18.8 kN/m³) x (6 m) + (18.8 kN/m³) x (12 m)

= 112.8 kN/m² + 225.6 kN/m²

= 338.4 kN/m²

Total vertical stress = 338.4 kN/m²

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An aluminium alloy tube has a length of 750 mm at a temperature of 223°C. What will be its length at 23°C if its coefficient of
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