Q.7
Given below are two statements
Statement (I) : In a deep bin, plane of rupture strikes the opposite side of structure before it meets the grain surface.
Statement (II) : A grain bin can be classified as deep bin when the depth of grain is greater than the equivalent diameter.
In light of the above statements, choose the most appropriate answer from the options given below.
- Grain Storage Silo Classifications (Deep vs. Shallow Bins):
- Statement (I): In a deep bin, plane of rupture strikes the opposite side of structure before it meets the grain surface. $\implies$ True.
- In deep grain bins, the internal plane of rupture of the granular mass intersects the opposite vertical wall before reaching the top free surface of the grain.
- Statement (II): A grain bin can be classified as deep bin when the depth of grain is greater than the equivalent diameter. $\implies$ True.
- By Janssen and Airy criteria, a bin is classified as a deep bin when grain depth $H \gt D \tan(45^\circ + \phi/2) \approx D$.
- Conclusion: Both Statement (I) and Statement (II) are true (Option 1).
Correct option: (1) Both Statement (I) and Statement (II) are true.
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