What happens to soils under following climates or event that pose a hazard to co

Question

What happens to soils under following climates or event that pose a hazard to construction: (a) Clays in regions where there is rain and heat, such as in tropical or sub-tropical climates? (b) Unsaturated loose silt and sand during and after rain in dry arid climates? (c) Saturated silt and sand during and following an earthquake?

Options:

1. Shatter to pieces. 2. Shrink. 3. Swell. 4. Behave as liquids. 5. Expand and contract.

Answer Example: a(i)b(j)c(k), where a, b, c, are questions, and i, j, k, possible answers.

1. a(3)b(4)c(1)

2.a(5)b(2)c(4)

3. a(1)b(2)c(3)

4. a(3)b(2)c(1)

5. a(2)b(1)c(4)

Explanation / Answer

2 is the answer

Some Clays have a property of expanding on contact with water this phenomenon is called swelling and they shrink when they become dry.

It is a fact that whenever a stress is applied to loose saturated material they loose strength and behaves like a liquid

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