Structural element particularly for obtaining electric line support girders

Abstract From the Canadian patent

A structural element formed as a tube for metal structural work having high torsional rigidity and being of easy assembly and disassembly in the field and of easy transport, comprising a pair of elongated half-shell sections, each of which has a concavity and flanges extending along both longitudinal sides of the concavity and has such a shape as to allow them to be stacked. The sections being arranged with their concavities opposed the flanges are interconnected by means of spaced bolts means through which the bolts pass are disposed between the flanges and maintain the flanges of the half-shell sections spaced apart and parallel.