Composite girders for construction of buildings etc.

摘要

The girder has an X-shaped axis with a double T-shaped axis. The composite girder pref. contains a suitable support mass which is protected against weather effects. The stability may be retained even without the support mass. The girder components may be perforated or otherwise machined, in order to retain the reinforcing support mass material. The material removal may provide connections for the girder cavities for unifying the support mass. The girder top and bottom chord covers all components and support axes.