Silos are made of galvanized corrugated steel with a 600 gr/m2 coating. There are three main types of silos: tower silos, bunker silos, and bag silos. The tower silos have a diameter of 4 to 48 meters. The bag silos have a diameter of 2 to 21m. The most common geometry of silos is a cylinder that has a metal support. Other than being cylinder-shaped, the silos can take the shape of a rectangle or a square. The construction and design of silos are dependent on the quantity of product to be stored, the environmental conditions, and the site conditions. The most common geometry of silos is a cylinder that has a metal support. Other than being cylinder-shaped, the silos can take the shape of a rectangle or a square. Silos have opening and closing provisions for loading and unloading the materials. The interior surface of the silos is made smooth and lined with special coatings to avoid any reaction with the stored content.