Aluminium overhead highway traffic sign structures

This paper deals with the design and manufacturing of aluminium overhead sign structures. These gantries are built up by using two X-shaped column frames connected by a triangular space frame girder. Slenderness and a low solidity ratio were objectives in the architectonic design. Braces and main chords of the triangular space frame are made of extruded profiles, whose geometry and cross sections are optimised with respect to load transfer and connections. The connections between the braces and the chords are established by welding.