Curtain walling with allowance for thermal expansion and contraction of panels

摘要

Reinforced concrete panels 4 each have a height greater than 5 meters. Each panel is suspended by suspension means 6 adjacent the top edge of the panel and is retained against the building by a slidening fastener 12 located towards the bottom of the panel. Sliding fastener 12 comprises metal case 121 embedded in the rear face of panel 4, and defines a T-shaped slot therein. The bolt of a bolt-nut assembly 122 is embedded in floor-slab 34 and the threaded end passes through the vertical stem of the T. The nut engages on the bolt in casing 121 to prevent outward movement of panel 4. A resilient element 123 may be provided round the shank of the bolt to prevent inward movement of the panel.