It is a two-storey elevated structure spanning a motorway. On both sides of the motorway there is access through a core comprising two lifts and two staircases. The overall dimensions of the superstructure are 79.50 x 15.00 m with the clearance over motorway being 5.50m.
The striking appearance of this elevated restaurant is largely due to the two single-leg rigid frames which support the building and which are in weathering steel. The main girder of each of these frames cantilevers 17.50 m rearwards from the tapered leg, while in the other direction it extends across the width of the motorway, rests on the concrete core on the opposite side and cantilevers 14.00 m beyond it. At roof level the girders are interconnected at intervals of 4.00 m by cross girders from which the two storey superstructure is suspended. The depth of main girder is 3800 mm over the leg, decreasing to 1700 mm at each end with the width of the flange – 900 mm. Each frame is of welded plate construction, the webs being stiffened by welded plates at each cross girder connection, while the leg is pin-jointed at its base to a concrete footing. The cross girders are plate girders with a maximum depth of 1410 mm at mid-span, but the cross girder over the concrete core on which the longer arms of the main girders of the frames are supported is of box section.
The transverse beams in the upper floor of the superstructure are 400 mm deep rolled steel sections which are suspended from each cross girder by two inner hangers and two outer hangers, the latter being in the two longitudinal facades. Both floors have longitudinal secondary beams, spaced at 2.60 m centres, carrying steel trough decking laid transversely and filled with in-situ concrete. The roof and floors are stiffened with horizontal cross bracings.
Notes:
arm n. ïëå÷î
clearance n. ïðîñâåò
motorway n. àâòîìàãèñòðàëü