Rectangular cross-section beams and structural units formed of these beams, made from cavity parts of extruded light metal

摘要

A beam that is characterized by an undercut groove parallel to the longitudinal axis of the extruded portion at one or more outer sides to receive elements for connecting the cavity portions and having a rectangular cross section, has a cross section length different from the rectangular cross section (a). ) And a hollow section 10, 10a-1; 11, 11a, 11n, 12; 13 having a cross-sectional width b). The cross sectional length a of one cavity part coincides with the cross sectional width b of the other cavity part.