Soil Mechanics and Foundation
Effective stress is

a physical parameter that can be measured
All of these
the stress at particles contact
important because it is a function of engineering properties of soil

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Soil Mechanics and Foundation
Which of the following statements is correct?

For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity.
A soil is said to be well graded if it has most of the particles of about the same size
None of these
Uniformity coefficient represents the shape of the particle size distribution curve.

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