Page 131 - AIT0723_E-Paper

Entwurf • Design Atelier Kaiser Shen, Stuttgart
Bauherr • Client Privat
Standort • Location Keltergasse 5, Pfaffenhofen
Nutzfläche • Floor space 521 m 2
Foto: Benno Heller
Fotos • Photos Brigida González, Stuttgart
Mehr Infos auf Seite • More infos on page 158

Barrierefreie Einliegerwohnung im Erdgeschoss • The barrier-free granny annexe on the ground floor

140 Kubikmeter Holz – 100 Tonnen CO 2 -Einsparung • 140 cubic metres of wood – 100 tonnes of CO 2 saved Doppelhaushälften • Semidetached houses Ausbau • Interior construction

use this straw-bale construction method for all six façades, including the roof and the rials. In addition to the use of straw, clay and wood, we also made sure that all other
floor slab. In order to do without elaborate waterproofing and still permanently protect materials used had a good ecological balance. Mainly renewable energies are used to
the straw bales in the floor slab from water, the house was elevated by an entire storey. operate the house. Electricity is generated from solar cells, which are integrated over
The simple basic form conceals a complex, interlocking semi-detached house. The two the entire surface as a water-bearing layer. The solar modules form the smallest unit of
residential units are each connected to the garden level by a single flight of stairs. The the house and correspond with the grid of the skylights and the house as a whole. The
entrance doors are on the ground floor. PV elements produce a total of 30,000 kWh of electricity per year, which exceeds the
projected required consumption by about 6000 kWh. A daytime electricity storage unit
A house that can be extended with unspecific rooms with a capacity of 10 kWh ensures that the electricity generated during the day remains
available in the evening and at night. If this is not sufficient, energy is drawn from the
On all floors, the residential units are arranged point-symmetrically to each other and grid; conversely, surpluses are fed into the grid. Heating is provided by a heat pump
the house is divided lengthwise on the first floor and crosswise on the second. The (which can be switched to cooling) that serves a ceiling-panel heating system. Overall,
division is visible in the interior: the spruce-wood construction and the clay plaster in the building thus achieves the KfW 40 Plus Efficient House and the Efficient House Plus
the flat facing the centre of the village were pigmented white, while the one facing the standard, as it can demonstrate both a negative annual primary energy demand and a
garden was left natural. This division is also discreetly reflected in the silver-fir façade: negative annual final energy demand.
the board widths in the floor boarding vary slightly between the two semi-detached
houses and thus give a hint of the interior. The house changes over the course of the Different configurations are possible
year: In summer, for example, the rooms outside function as outdoor living rooms
and thus expand the living space. We see an enormous enrichment in the subsequent The life cycle assessment of the building is particularly good due to the above-men-
further building by the residents of this settlement. Since all the rooms are almost iden- tioned aspects: Compared to a conventional semi-detached house of the same size
tical, they can be used alternately as kitchen, bedroom, living room or dining room. made of concrete or brick and with classic insulation, 95 percent of CO could be
2
The equivalence of the rooms is also reflected in the façade: all the rooms on the upper saved. Around 100 tonnes of CO are stored in the 140 cubic metres of wood used.
2
floor have identical window formats. The residential units of the semi-detached houses Typologically, Haus Hoinka demonstrates how housing construction in rural areas can
can be divided into floors. In this way, the two large maisonettes can be divided into be rethought. The redensification of the established village centre is carried out with a
four smaller units. The house thus offers great flexibility of use – even without structural sustainable building construction and simple materials. In addition, the building offers
interventions. We attached great importance to the use of simple and ecological mate- an extremely flexible floor plan that allows various constellations of living together.

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