STAIRCASE GREAT PORTLAND ESTATES – London, Oxford Street
UNITED COLORS OF BENETTON - Treviso, Italy
The staircase is composed by 2 ramps, from the underground floor to the ground floor, and from the ground floor to the upper floor.
The main beam is composed by double-plates H=350mm in steel S275 bearing the steps composed by perimetral tubes 30x50x4mm with tempered glass th.6+6mm and a glass parapet.
Each of the ramps are composed by a circular part and an elicoidal ramp, with an intermediate landing floor, fixed to concrete perimetral columns.
The lateral parapets are composed by glasses th.10+10 mm with SG (Sentry Glass) 1.52mm, fully laminated tempered, insered continuosly on the space between the plates of the main beams.
The fixation on the basament floor is rapresented by steel plates th.20mm with 6 anchor bolts, the fixation on the existing steel beams of the ground floor and first floor is rapresented by steel plates th.20mm with 6 M16 bolts.