Steel Tanks Entering information in the following forms create a tank chart for metal rectangular and flat-end cylindrical liquid storage tanks. Horizontal Liquid Storage Tank Charts Ft. In. Length: Diameter: Tank Chart Details 1 Inch Increments 1/8th Inch Increments Number of Columns: 1 2 3 4 5 6 7 8 Vertical Tank Charts Ft. In. Height: Diameter: Tank Chart Details 1 Inch Increments 1/8th Inch Increments Number of Columns: 1 2 3 4 5 6 7 8 Rectangular Tank Charts Ft. In. Height: Length: Width: Tank Chart Details 1 Inch Increments 1/8th Inch Increments Number of Columns: 1 2 3 4 5 6 7 8