Sustainable Timber School Construction

SCHMUTTERTAL GRAMMAR SCHOOL

Counting from the surface of the basement ceiling, nearly all structures of the Schmuttertal Gram- mar School are constructed from spruce wood. The layout of the buildings is based on a grid of 2.7 m. All rooms are designed accordingly, with the basic dimension being divided or multiplied as the need arises. The grid has more than 1,000 supports. They carry the joists which in turn sup- port the ceilings, which consist of wood-concrete composite structures for soundproofing reasons. Lightweight ribs made of laminated wood with a cross section of 18x32 cm are laid at intervals of 90 cm to form the tensile zone. OSB boards are placed on top as lost formwork and covered by a 10 cm layer of heavy in-situ concrete as pressure zone. The interaction of wood and concre- te results in coffered ceilings which span the rooms at a very low height with a centre- to-centre distance of 8.1 m. The storey ceilings brace the skeleton construction, with the sloping roofs lined with three-layered boards in certain places for the same purpose. In the vertical level, they are supported by in- dividual timber-frame walls also lined with OSB. The other inner and outer walls do not have a structural function. Schritt 2: Deckenelemente über EG

Schritt 1: Wände + Stützen EG

Schritt 3: Wände + Stützen 1. OG

Schritt 4: Deckenelemente über 1. OG

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Schritt 5: Wände + Stützen 2. OG

Schritt 6: Dachelemente

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Structure, space formation and assembly steps

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