2005DIN EN 14015:2005 Specification for the design and manufacture of site built, vertical, cylindrical, flat-bottomed, above ground, welded, steel tanks for the storage of liquids at ambient temperature and above; German version EN 14015:2004
1979DIN 4119-1:1979 Above-ground Cylindrical Flat-bottomed Tank Installations of Metallic Materials; Fundamentals, Design, Tests