This architectural drawing is the 2D design of a cross-section of a cistern tank in AutoCAD drawing, CAD file, and dwg file. Cisterns, or rainwater harvesting devices, are used to collect runoff from roofs. Runoff from the pavement is sometimes temporarily stored in cisterns. A cistern is simply a tank that holds runoff and can range in size from 50 to thousands of gallons. For more details and information download the drawing file. Thank you for visiting our website cadbull.com.