Plan, Analysis and Design of a Circular RCC Silo Structure by Considering Indian Seismic Zone

Bunkers and Silos are the structures used for the storage of materials like grain, cereals, coal, cement etc. Bunkers and silos are commonly called as bins. If the depth and breadth of a bin are such that the plane of rupture meets the surface of the material, before it strikes the opposite side of the bin, it is named as a shallow bin or a bunker. However, when the plane of rupture drawn from the bottom edge of the bin does not intersect the surface level of the material, it is called a deep bin or silo. Ordinarily, a bin may be said to be a silo, if its depth is greater than twice the breadth. Hoppers are rectangular bins with the bottom floor consisting of four sloping slabs. Silos are generally circular in cross section. For self-cleansing and for emptying, it is supported on a number of columns, through a ring beam. Its bottom height is fixed in such a way that a truck can pass its underneath. It is covered with thin spherical or conical dome, or with a beam and slab type flat roof with suitable man-hole. The stored material exerts pressure on the side of a bin. This pressure varies during the filling and emptying processes, and also with the location of the discharging hole. The exact analysis of pressure is extremely difficult because of mainly variable factors. Therefore, approximate methods suggested by Janssen and Airy are commonly followed. This paper deals with the Planning, Analysis and Design of Circular RCC Silo as per Indian Standards taking into account the wind pressure which is to be constructed at Kumarajah Muthiah Nagar, Karur, TamilNadu, India