GATE CE 2023 Set 1 — Question 32
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Geotechnical Engineering → Shear Strength of Soils → Direct Shear Test
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Question
A drained direct shear test was carried out on a sandy soil. Under a normal stress of 50 kPa, the test specimen failed at a shear stress of 35 kPa. The angle of internal friction of the sample is ______ degree (round off to the nearest integer).
Correct answer
35 to 35
Solution
For sandy soil (cohesionless soil), the cohesion .
The shear strength equation is:
Given:
Normal stress, kPa
Shear stress at failure, kPa
Rounding off to the nearest integer, .
The shear strength equation is:
Given:
Normal stress, kPa
Shear stress at failure, kPa
Rounding off to the nearest integer, .
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