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Sports Hall in Uster

Both the form and the construction of this Swiss sports hall are distinguished by their clarity and legibility. Laid out to a rectangular plan, the hall stands on a concrete plinth and is enclosed on all sides in a glazed skin. To the north and south, the skin is transparent; to the west and east, it is translucent. The facade elements consist of light-diffusing double glazing with a capillary intermediate layer. The light transmittance is 26 per cent. The steel load-bearing structure of the two-bay hall consists of a three-column hinged frame system with a rocker column. The main frame is anchored in the peripheral concrete plinth by means of a cast-steel element. In view of the asymmetric geometry of the framed girders, their dimensions at the northern end are greater. The architects exploited this to give the roof the necessary falls, thus achieving a simple means of drainage. Adequate cross-ventilation of the hall was ensured by incorporating horizontal ventilation flaps in the narrow projections of the glass facade along the plinth and glass louvres in the north face. Only for larger events is it necessary to operate the mechanical ventilation plant. The concrete plinth and the solid parts of the stands – with seating for up to 1,000 spectators – provide adequate thermal storage mass to achieve balanced indoor conditions even on hot days. To improve the spatial acoustics, the ribbed sheet soffit lining is perforated. The rigid slab construction above this serves to stabilize the steel load-bearing structure.
This article is taken out of the following magazine:
DETAIL 5/2001

Roof Structures

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