description: social housing / private public partnership / technical
upgrading / revitalization / conversion // space sharing aspects: new
typologies / staircase, access balconies and garden as semipublic spaces / hybrid
multifunctional spaces / switchable floor plan / multiincident shell
location: Bad Waltersdorf, Styria, Austria client: Franz and Gertrude Brugner architecture: SPLITTERWERK project-team: Mark Blaschitz, Hannes Freiszmuth, Johann Grabner, Edith Hemmrich, Bernhard Kargl, Antje Neitsch, Gernot Ritter, Josef Roschitz, Andreas Stampfer structural consultant: Wilhelm Lerch energy consultant: Peter Kautsch photos: Paul Ott, Nikolaos Zachariadis video & video-stills: Markus Max Nagler, Mirac Caglar Yazici, Nikolaos Zachariadis site area: 1.214 sqm built-up area: 620 sqm costs: 650.000 € start of planning: 1998 start of construction: 2003 completion: 2004 construction: Bau-Pilz, Cserni Wohnen, Bscheider, Schlosserei Heco, Holz Bau Weiz exhibition: in-aus-nach Salzburg, Austria and Sculptural Architecture in Austria, China award: Geramb Dankzeichen für gutes Bauen 2004
Adaptation of an old farmyard, and a fire station
The building is situated in the center of the town of Bad Waltersdorf in the Styrian spa region. On site, the road expands to form a square which encompasses the building. A gallery accesses the apartments and creates an open space in front of every door. A garden adds to the apartments situated to the south-west of the plot.
Black Treefrog Succeeds Red
The existing building substance has remained nearly untouched. It is supplemented by a new outer envelope of wooden slats waterproofed in black, to serve as a trellis for wild wine, and by new inner shells of wood materials painted in different colors, which encompass the individual units. Form emerges largely unaffected by function: black, soft and translucent on the outside – colorful, hard and mirror-smooth on the inside.
wooden trellis changes the former heterogeneous patchwork of different parts of
the building into a homogeneous shape. It provides shadow and screens from
view. A wild vine is overgrowing the trellis and completes the impression of an
arbour in some spaces. The changing colour of the wild vine will turn the
colour of the Black Treefrog into green and red depending on the seasons.
from the existing walls, the functional areas such as kitchen, sleeping,
bathing alcoves or work spaces are integrated into the space between the inner
and outer envelopes. This creates an neutral center – the Multiincident Shell –
to which the functions of residential living can be sequentially or
functionally neutral zones of the Multiincident Shells are painted in different
colors depending on orientation and situation within the building, and are
therefore responsive to the specific daylight conditions and floor plan
configurations. The southern apartments are designed in cool gray and pure
white, the northern apartments in warm ivory tones. The central apartments,
with less natural lighting, are painted in vibrant red and blue, or sunny
combinations of orange and yellow. Artificial lighting for all apartments is
ensured by indirect lighting system in the functional areas, which takes the
respective color schemes to these areas by means of reflection.
The surface of the main stairway of the Black Treefrog artificates the local grapevines, which additionally to the wooden trellis is informing the whole outside of the building as a landscape. The floors, walls, ceilings and steps of the staircase are treated as similar formal elements and are informed with a dense patterning of differently sized and detailed vine leaves. The informed surfaces influence the three-dimensional effect of the whole: the stair construction is seen less as a form in space and more as a programmatic division of entry, splitting access into two zones, one for the ground floor, and the other for the first storey. The missing risers of the open stairs allow an optical connection between these physically and functionally divided zones, and the surface patterns blur the distinction between foreground and background. The constructive and functional parts of the main stair are overlaid with the informed surface – the pattern of grape leaves. Simultaneously, the pattern breaks the construction’s lines and edges to the point that the geometry of the ensemble begins to dissolve. The space is transformed into a sphere.
VerfasserIn: Ina Westheiden // Bilder & Text: SPLITTERWERK