Grain bins are bulk storage structures for dry wheat, soybean, maize, oats, barley and more. Grain bins are cylinders made of corrugated sheets or sheet metal with a coned metal roof that has vents. The floors of grain bins have aeration systems to keep good air flow through the commodities and keep it at a good temperature and humidity level to prevent spoilage. At the top of each grain bin there are tubed conveyors to transport the grain. The grain bin sits on top of a strong concrete base to help the structure withstand high winds and the massive weight from the grain.[1]