| 摘要 |
The metal section, particularly for use with street furniture, has a cross section formed by a central element 1 with a closed tubular profile from which radial reinforcement ribs 2 project that are regularly distributed over the profile of the central element and which form guides for housing functional and/or surface finishing elements. The extrusion is preferably formed from aluminium with the closed tubular profile being either circular or square in cross section. The ribs are positioned at ninety degrees to each other and are preferably each formed from a pair of parallel walls 2a,2b between which the functional/finishing elements are housed. The parallel walls preferably include an undercut 2a'2b' for forming a retaining shoulder and which may be formed by fins projecting in from the inner surfaces of the inner walls. The section may also include diagonal cross-walls 3 that extend between adjacent ribs at an angle of forty five degrees and which may include axial drain apertures 4. The ribs may also have appendages 5a,5b at their ends that face the cross-walls and which form guides for finishing elements 7. |
