Soil Mechanics and Foundation
For a loose sand sample and a dense sand sample consolidated to the same effective stress

ultimate strength is same but peak
ultimate strength is same and also peak strength is same
ultimate strength is same but peak strength of dense sand is greater than that of loose sand
ultimate strength is different but peak strength is same

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

Uniformity coefficient represents the shape of the particle size distribution curve.
None of these
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.

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Soil Mechanics and Foundation
A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively

0.2 N/mm² and 0°
0.05 N/mm² and 0°
0.05 N/mm² and 45°
0.5 N/mm² and 30°

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