Used 2596 Cubic Foot (Approx. 19,000 Gallons) Peabody Tec Bolted Carbon Steel Silo. 12’ diameter x 31’ straight side. On skirt. Built 1996. Serial # 63710.Previous Use: Fly Ash. Designed for funnel flow loads. Max Operating Pressure (Ounces/Square Inch) – 2.0. Vacuum (Ounces/Square Inch) -0.5.