Vienna, Austria will now be home to “Viertel Zwei” (which translates to “Quarter Two”) - an exclusive living space covering 40,000 square metres, comprising modern office & residential buildings and spacious gardens. At the core of the quarter will be a 5,000 square metre lake, on which will levitate a part of the office building “Plus Zwei” (Plus Two), like an oversized block of glass.
The building, designed by Viennese architect Martin Kohlbauer, consists of 7,200 square metres of façade glazed with solar control glass, providing the interiors with natural light and protecting the excessive ingress of heat at the same time. The facade is a W90 panel design and, therefore, fulfils the “fire protection requirements W90 for non-load bearing exterior wall components” in order to prevent fire spreading from one storey to another.
The glass used on “Plus Zwei” fulfils the twin demands of aesthetics and functionality.. The energy-saving property of solar control glazing automatically lowers the operational costs of the building and protects the environment. The extremely low solar factor (g-value = 27% as per EN 410) prevents the interiors from heating up excessively on hot summer days, thereby reducing the costs for air-conditioning and eliminating the need for external mechanical shade systems. Nonetheless, a relatively large amount of daylight still floods the rooms (tL= 50%), so that electrical light is only needed fairly late into the day. During winters, the extremely low Ug-value of 1.1 W/m2K as per EN 673 provides effective heat insulation.
Source: http://www.nbmcw.com
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