LIQUORICE AS AN INSPIRATION
“Of course, the design idea for such a project has to be based on children as the ultimate users,” says djb project manager Matthias Bettmann, describing the origins of the design. “Children love sweets and they love colour, too! So we took our inspiration from liquorice allsorts. The monolithic building mass was visually broken up into individual, coloured, shear walls, between which are vertical cross-storey, dark-coloured, window elements representing the liquorice in the sweet.”
OPTIMIZED BUILDING ENVELOPE
The exterior walls were erected from filled clay blocks 49 and 42.5 cm thick. The lightweight vertically perforated clay blocks filled with mineral wool boast thermal conductivity of A. =0.07 W/mK and can even be used in KfW-efficiency and passive-energy houses for monolithic exterior walls with high thermal insulation. With 49 cm masonry thickness, plus 2 cm of external lightweight render and 1.5 cm lime-gypsum plaster on the inside, a heat transfer value of 0. 14 W/m2K was achieved. The load-bearing interior walls were also built with clay block masonry. They support a healthy indoor climate as high-porosity clay absorbs moisture and heat and gives it off again after a certain delay. For buildings in which children and childcare workers spend time, this is a huge advantage.
The walls support the ceiling over the ground floor as well as the flat roof over the upper storey. This roof closes with concrete fascia running around the entire building, which the designers say has several functions – both in terms of structural requirements and with regard to eliminating thermal bridges.
SPACE FOR CHILDREN
The net floor area of 1,280 m2 accommodates a layout with a total of five group rooms for a crib, nursery and day care centre, plus a sports room, two sleeping areas, a crafts room and a staff area.
Facts & Figures
Project nameKinderhaus Buntsprecht, Spardorf, Germany
Year of completion2014