[Working detail 30.3.11] Glazed screens to atrium studios
As the only source of daylight is the original system of rooflights, the studios were designed with floor-to-ceiling double-glazed screens facing onto a triple-height atrium. The glazed walls are inclined at an angle of 6° to the vertical to maximise the available light, particularly to the lower-floor studios.
The top-floor studios have a partly glazed roof, with large panels of glass fixed to a series of cast ‘spider’ fixings, in turn fixed to tubular steel bow trusses spanning between cross walls. The silicone-jointed double glazed panes comprise Thermospan units with a 19.5mm toughened glass inner pane, a 16mm cavity and a 6mm toughened glass outer pane.
The thickness of the inner pane responds to the need for the glazed screen to act as a barrier. The panes are framelessly slip-glazed into the floor, soffit and walls using a system of powder-coated channels and back-to-back angles.
The floor and wall edges are clad in 2mm polyester powder-coated flashings, the floor-edge flashing being split horizontally, to create a continuous 10mm ventilation slot and also a ‘shadow step’, reducing the apparent depth of the floor construction.
Graham Steel, senior associate, Nicoll Russell Studios
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