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Free online calculation tools for structural design according to Eurocodes
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Eurocode 3 Table of design properties for square steel profiles - Square Hollow Sections (SHS)
Design aid - Table of design properties for square hollow steel sections (SHS) including section dimensions, cross-section properties (area A, second moment of area I, elastic modulus Wel, plastic modulus Wpl), strength properties (elastic moment Mel, plastic moment Mpl, plastic shear Vpl), and buckling properties (section class, buckling curves)
EN 1993-1-1:2005+AC2:2009 Sections 6.2 & 6.3
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Nationally Defined Parameters (NDPs) automatically filled for supported countries (left blank otherwise)