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Question
For a certain soil, the angle of internal friction is 30°. The coefficient of active and passive pressure, respectively, will be
किसी निश्चित मिट्टी के लिए आंतरिक घर्षण कोण 30° है। सक्रिय और निष्क्रिय दाब का गुणांक क्रमशः होगा
A.
0.5, 0.8
B.
0.4, 1.2
C.
0.6, 2.4
D.
0.33, 3
Answer ( Option D)

0.33, 3

Solution

Given :
        Φ=30°
    We know,
    Active earth pressure (Ka),
Passive eart pressure
Hence, the correct option is (d).
 
• In case of cohesive soil (clay) active earth pressure is given by,
• In case of cohesive soil (clay) passive earth pressure is given by,

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