Soil Mechanics and Foundation
Highway Research Board (HRB) classification of soils is based on

plasticity characteristics
particle size composition
None of these
both particle size composition and plasticity characteristics

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

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

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