![]() ![]() ![]() In the provided tables the shear area A v,y is assumed equal to the sum of areas of the flanges only, which is a reasonable conservative assumption and it is compatible with the shear area of welded I and H sections.Second Moment of Area, Area Moment of Inertia Where according to EN §5.1 the value of the coefficient η is assumed equal to η = 1.2 for steel grades up to and including S460 and h w = h - 2 t f is the height of the web.įor shear load parallel to the flanges the corresponding shear area A v,y is specified in EN for the case of welded I and H sections.įor shear load parallel to the flanges the corresponding shear area A v,y is not specified in EN for the case of rolled I and H sections. ![]() Rolled sections: A v,z = max( A - 2 b t f + ( t w + 2 r) t f, η h w t w ) The root fillets are taken into account in the calculated geometric properties.ĭue to symmetry the centroid of the cross-section (center of mass) as well as the shear center are located in the middle of the height and width.įor shear load parallel to the web the shear area A v,z, for the case of rolled or welded I and H sections, is specified in EN §6.2.6(3) as: The geometric quantities include the total area of the cross section A and the second moments of the area about the major axis I y and about the minor axis I z, where the orientation of the major axis of bending y-y and the minor axis of bending z-z is specified in EN §1.7 which is reproduced in the figure above. The basic geometric properties of the cross-section are calculated by using the fundamental relations of mechanics. In this calculations the root radius r is considered as specified in the older standards. The root radius r is not specified in the latest standard EN 10365 because it varies with individual manufacturers. The notation is defined in EN §1.7 which is reproduced in the figure above. The geometric properties that fully define the cross-section are: total height h, flange width b, web thickness t w, flange thickness t f, and root radius r. Geometry of HEM profiles: Euronorm 53 – 62, DIN 1025/4 Geometry of HEB profiles: Euronorm 53 – 62, DIN 1025/2 Geometry of HEA profiles: Euronorm 53 – 62, DIN 1025/3 Geometry of IPE profiles: Euronorm 19 – 57, DIN 1025/5 The European Standard EN 10365 has superseded the following older standards: For the case of combined bending moment and compressive axial force the section class has an intermediate value that may be equal or between the presented values.ĭesign properties for flanged steel profiles (IPE, HEA, HEB, HEM) according to EN Definition of the cross-sectionįor typical steel profiles (IPE, HEA, HEB, HEM, UB, UC, UBP) the geometric properties of the cross-section are defined in the following standard: EN 10365 - Hot rolled steel channels, I and H sections - Dimensions and masses.
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