In a triaxial shear test of cohesionless soil, the soil cylinder was subjected to a liquid pressure of 16kPa inside the chamber. It was observed that failure of the sample in shear occurred when the axial compressive stress reached 40kPa. What is the nearest value of the internal angle friction in degrees of the soil sample? A. 25.4 B. 26.8 C. 29.1 D. 27.4

Principles of Foundation Engineering (MindTap Course List)
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Chapter3: Natural Soil Deposits And Subsoil Exploration
Section: Chapter Questions
Problem 3.29P
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In a triaxial shear test of cohesionless soil, the soil cylinder was subjected to a liquid pressure of 16kPa inside the chamber. It was observed that failure of the sample in shear occurred when the axial compressive stress reached 40kPa. What is the nearest value of the internal angle friction in degrees of the soil sample?

A. 25.4

B. 26.8

C. 29.1

D. 27.4

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