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Hopper Bottom Silos
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Hopper Bottom Silos are generally built on fabricated steel structures with conical bottom made of steel plates and the corrugated sheets preformed are assembled with bolts and nuts on circular purlins and vertical stiffeners with water proof washers , cylindrically above the conical hopper with a slopped roof in the top. Ladders to clim b and get into the silos, handrails, manholes etc are provided. The grains will be discharged by gravity to the bucket elevator/belt conveyor for onward conveying. These silos can also be built on the top of concrete conical hopper with beams and columns built in situ. Aeration, ventilation, temperature monitoring system as required are all provided to the built hopper bottom silos. Normally these silos are recommended for storage upto 500 tones of grains like paddy having density of less than 550kg/m3. Hopper Bottom Silos are multipurpose and are suitable for grain processing plants, animal feed plants, grain milling plants, and poultry houses. Hopper Bottom Silos are manufactured in capacities from 20 Tons to 1000 Tons. Dynamic Analysis of silo structural stability is carried out considering seismic zone and wind loads of respective areas where the silos will be installed. Zincalume steels sheets are used in the manufacturing of the silos, which are able to withstand strength 350Mpa. Standard angle for bottom hopper of a silo is 45 degrees. However, the bottom hoppers of angle 50, 55, 60 degrees may also be manufactured on request
