Difference between Bunker and Silo
Bunker
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- Bunkers may be rectangular or circular in plan
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- Bunkers are shallow in depth
- The plane of rupture intersects at top of the surface and makes an angle of (90+ᶲ)/ 2
Silo
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- Silos are generally circular in plan
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- Silos are deep
- The plane of rupture intersects at walls of silo and makes an angle of (90+ᶲ)/ 2
Both of them are called bins.
More info on Bunkers
While designing walls of circular bunker they are subjected to hoop tension
T = 0.5phD
Where, ph = horizontal pressure
D = dia. Of bunker
In this steel is provided to resist tension. We usually provide minimum thickness of 120mm and distribution steel is provided in vertical direction.
Astmin. =0.12BD
*The material stored in bunkers exerts lateral earth pressure on the walls and it also exerts downward load due to friction between grain stored and the wall.
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