The structure is composed of galvanized steel columns in turn formed by:
Base: element resting on the slab format from sheet metal plate Ø 95 mm and thickness 1.5 mm, specially sheared in order to obtain the necessary rigidity and allow a good grip of the possible gluing. It is coupled with a cold-rolled tube measuring 20mm, sp. 2mm of variable height. An anti-unscrewing notch allows the coupling with a hea.
Head: supporting element formed from steel plate 90×90 mm, sp. 2.5 mm, suitably shaped in order to obtain the interlocking of the stringers and of the seals. An M16 rod of variable height is coupled to the plate. A self-locking nut with notches enables fine adjustment of ‘final height. A seal made of antistatic or conductive polythene, completes the head and neither is integral part via quick fasteners.
The types of structure may be the following: