Multi-sectional mast or upright structure - has connection elements with semicircular tabs cut and bent out of surfaces

摘要

The mast consists of a number of connected tubular sections, with coupling plates, having inclined connection surfaces. Neighbouring surface contact each other, and have connecting elements. The connection surfaces consist of semi-circular tabs, cut and bent out of the plane of the surface. Both ends of a relatively short tubular section (11) may carry perforated ring flanges (15), to allow the clamping of a compression ring (62) with pre-tensioned spokes (63), to support a roofing skin. There may be a lamp (44) at the top of the mast.