1.1 Scope of EN 1993-4-2 (1) EN 1993-4-2 provides rules for structural design of vertical cylindrical, conical and pedestal above-ground steel tanks for the storage of liquids and refrigerated liquified gas products. (2) This document is applicable to the design for resistance of cylindrical walls and flat bottoms constructed using unstiffened plates. The design of conical and dome roofs as shell structures (unsupported) or as supported on a structural framework (supported) are also covered. (3) This document is only applicable to the requirements for resistance and structural stability of steel tanks. (4) Further guidance on design aspects other than the structural design can be obtained from EN 14015 or the EN 14620 series, as applicable. (5) This document only covers steel tank structures in Tank Groups 1, 2 and 3, as defined in this document. NOTE Tank Group 4 is not defined in this document (see 3.1.41). (6) This document is applicable to tanks within the following dimensio
