The common name for silos is binned. The bins are used to store large quantities of materials like grains, coals etc. R.C.C. bins are preferred to steel bins since maintenance cost of R.C.C. bins is less. The bunkers may be termed as shallow bins and silos as deep bins. Concrete Silos construction may be circular or rectangular in shape. Constrosystems is one of the leading Silo construction and design companies in India.