Question

According to Janssen theory, the lateral pressure exerted by the grain on the wall is influenced by -
(A) Pressure coefficient
(B) Shape of grain
(C) Bulk density of grain
(D) Depth of grain
Choose the correct answer from the options given below:

• A. (A), (B) and (D) only.
• B. (C) and (D) only.
• C. (A), (C) and (D) only.
• D. (A), (B), (C) and (D).

Hint:

Remember that in Janssen's equation, as the depth (\(h\)) becomes very large, the lateral pressure reaches a constant maximum value: \(L_{\text{max}} = \frac{w \cdot R}{\mu'}\). This is a distinct difference from hydrostatic pressure, which increases linearly with depth without limit.

Answer 1

The Correct Option is C