The bearing structures are carried out with hot
profiles and cold shaped in FE 360 steel. We have foreseen various structural typologies with 4-6-8 pillars in HEA-HEB-IPE-L profiles. The connections are made by 8.8 class bolts at high resistance. The welding are II class ones. The intallation of log bolts in smooth rods allow the connection to the foundations understructure. The grating steps
and the landings are in grating mesh mm 15x76 and bearing hars mm 30x2, they have a min. dimension
of 120 cm and are ranked as anti-slip, anti-heel, anigiddiness products.

The surfaces of the structural elements, of the
railing, of the steps and anything else necessary for the realization of a stair, are protected by oxidation through a hot dip galvanisaiton process. The bolts
are cold galvanised.