Steel Buildings in Europe

Part 10: Technical Software Specification for Composite Beams 10 - 9 2.2 Steel section The structural steel section is a hot rolled I-section defined by its geometry: h is the depth of the structural steel section b is the flange width t f is the flange thickness t w is the web thickness r is the root radius. The following section properties can be obtained from an appropriate database: A is the section area A v,z is the shear area, according to EN 1993-1-1 § 6.2.6(3) I y is the second moment of area about the strong axis I z is the second moment of area about the weak axis I t is the torsion constant I w is the warping constant W el,y is the elastic modulus about the strong axis W pl,y is the plastic modulus about the strong axis. The steel grade can be selected from the following list: S235, S275, S355, S420, S460 2.3 Concrete slab The concrete slab is defined by: The type of slab: either plain slab or slab with profiled steel sheeting h f is the slab thickness  is the concrete density The concrete class can be chosen from: - C20/25 - C25/30 - C30/37 - C35/45 - C40/50 - C45/55 - C50/60 - C55/67 - C60/75