Description: Silo - a large structure, usually cylindrical, typically used for storing grain or winter food for farm animals. Digitized point at the center of the base of the silo.Smokestack - chimney or funnel for discharging smoke from a factory and helping to induce a draft. Digitized point at the center of the base of the smokestack.Windmill - a building or structure with large blades on the outside that, when turned by the force of the wind, provide electrical or mechanical power. Digitized point at the center of the base of the windmill.
Description: Tank Above Ground - public utility tanks and industrial storage tanks. Digitized as a circle where appropriate and digitized outer perimeter of feature if not circular. Digitized at the base of the element.Tank Waste Water - tanks used for the storage and treatment of waste water. Digitized as a circle where appropriate and digitize outer perimeter of feature if not circular. Digitized at the base of the element.Open Storage - stacked or piled materials found in industrial areas. Digitized the outline of the piled or stacked materials at the base.Water Tower - elevated structure supporting a water tank constructed at a height sufficient to pressurize a water supply system for the distribution of potable water, and to provide emergency storage for fire protection. Digitized as a circle. All features will be digitized at the base of the element.