Office Buildings

Diocesan School Office Administration Building

Rottenburg am Neckar, Germany

Ansicht Südost 1 | Ansicht Südost
The extension of the Diocesan School Administration Building is perfectly integrated into the park estate - taking into account the existing trees - and at the same time functions completely independently.
Design: The new building in Rottenburg extends the existing administration building. The property is situated on an east-facing hill and is surrounded by dense woodland and an old stone wall. The extended two-storey building stands parallel to the existing administration building in the middle of old trees. The new building is connected to the main entrance axis of the existing building by a glazed bridge at the entrance floor and takes the form of the frame of the existing building. Horizontal and vertical framing elements structure the façade surface of the building, form the structural weather protection of the façade and serve as the load-bearing structure of the flexible sun protection.

Wood: The new building is made of prefabricated wooden panels. The load-bearing wall and ceiling elements and the interior columns reveal their surface of spruce wood. The exterior of the building is clad in lacquered white fir wood to protect the façade from greying. The glazing throughout is made of wooden window frames of white fir wood protected by aluminium profiles. All materials and surfaces have retained the original colour of the materials.
Verbindungsgang zum Bestandsgebäude 2 | Verbindungsgang zum Bestandsgebäude
Ansicht Süd 3 | Ansicht Süd
Treppe 4 | Treppe
Treppe 5 | Treppe
Basic information
Year of Completion |  2014
Investor |  Diözese Rottenburg-Stuttgart, Rottenburg (DE)
Architecture |  kaiser architekten BDA, Dagmar Bürk Kaiser, Stuttgart (DE)
Structural Engineering |  Helber + Ruff Beratende Ingenieure PartG mbB, Ludwigsburg (DE)
Construction Time |  12 months
Number of floors |  2
Plot size |  32 570 m²
Gross floor area |  640 m²
Construction Costs (netto) |  1 151 EUR/m²
Awards |  Holzbaupreis Baden-Württemberg 2015; Nagrada za vzorno stavbo Zbornice arhitektov Baden-Württemberg 2017

Technical aspects
Concept |  Beams of laminated spruce; walls of solid cross-laminated spruce panels; facade skin of sawn white fir; ceiling of laminated spruce and hollow ceiling beams
Woodworking |  müllerblaustein Holzbau GmbH, Blaustein (DE)
Origin of Timber, Certification |  Solid wood panels from Austria (AT); timber for facade from the Allgäu region (DE); PEFC or natureplus certified (wall and ceiling construction elements, interior wall cladding)
Traceability of Timber |  Yes (companies listed)
Forestry Value Chain |  Due to the limited tendering process, the builder mainly selected companies in the region
Energy Efficiency Standard |  EnEV Energy Saving Regulation (2012)
Energy Systems |  Natural ventilation and night cooling via window flaps with ventilation louvres
Energy Consumption  |  Connected to existing building
U-Value Wall | Roof | Floor | Windows (W/(m²K)) |  0,17 | 0,15 | 0,24 | 1,1

Regional Wood Cost Saving 100% Wood