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A STONE-CLAD FACADE WITH PROJECTING BAY WINDOWS

WORKING DETAILS / ST ANDREWS

The arts faculty is clad with Peakmoor sandstone, matching the stone of the surrounding, traditional buildings while relating to the tone of the 1970s library's concrete facade.

The ground oor of the south facade is a curtain wall set behind columns clad with smooth sandstone, forming a loggia leading from the library to the entrance. A horizontal stone string course above the columns frames recessed stone panels with a tooled finish on the first and second oors.

Large bay windows project through the panels - a modern version of the bays common to the historic university buildings.

The structure is a steel frame with composite steel/ concrete deck oors. Walls have a blockwork inner leaf with an EPDM membrane, 70mm insulation and cavity.

The stone slabs are individually fixed with stainless-steel support brackets and solid joints.

The bay windows are formed of a polyester powdercoated aluminium curtain-wall system, with opening vents. The academic offices and the spaces beyond are naturally ventilated.

The glass-to-glass junctions at two corners of each bay have clear silicone joints, giving uninterrupted lateral views. As a rainscreen, the bays have oor and ceiling zinc-panel spandrels with insulation and an EPDM membrane behind. The wall/ zinc panel junctions are custommade aluminium extrusions.

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