Project Description: 6-storey office building with an inner courtyard and a multi-storey link to the existing building. 

On the south façade, an 80-cm deep by 24.10 m four-storey high double façade provides thermal and acoustic protection. The exterior skin is point-fixed, toughened, solar control, single-pane glazing. The interior skin consists of low-E coated, double-glazed, punched windows and spandrels. Blinds are positioned interior to the internal glass windows. There are staggered exterior openings at the base of the curtainwall (not clear whether at each floor or simply at the base of the four-storey façade). The top of the four-storey façade has a rainproof opening with overlapping glass panes that allow air exchange. For cooling, solar radiation absorbed by the exterior glazing layer is vented or extracted by natural convection through the top opening at the fourth floor. Some of the interior windows are operable to allow for cleaning within the interstitial space. Walkway grills occur at every floor within this interstitial space. 

Reference 

Hertzsch, E. 1998. Double Skin Façades. Catalog of Josef Gartner & Co. Munich: Peschke.

Question/Information: eslee@lbl.gov