Haus von Hier – A building from here 

A marriage of solid wood, filigree willow rods and solid clay

In the centre of Bad Boll, a local wood construction firm is working closely with researchers to develop multi-family homes made from local, sustainable building materials. Circular structures created by robots are being used to test digital sustainable construction as a model.

Where a dance café once stood, new residential space is being created in the centre of Bad Boll. The gap between buildings is being filled, blending into the established townscape with its closely spaced buildings, gabled roofs and varying gable orientations. Historic half-timbered houses serve as the design inspiration: in accordance with fire safety requirements, a fire barrier is incorporated at each storey. The structural depth required for this is utilised architecturally, reinterpreting the traditional cantilevered floor slabs in a contemporary form. The two residential buildings combine regional building materials with a circular construction approach. Experts from the fields of research and practice are erecting them using prefabricated timber elements – joined without adhesives and therefore capable of being dismantled to recover the original materials. The 30-centimetre-thick external walls, made of local solid timber, require no additional insulation; dry-lay systems using lime aggregate replace conventional screed constructions. Flexible floor plans and generous ceiling heights make the buildings adaptable to changing uses, whilst the high degree of prefabrication significantly reduces construction time. The flats are aimed at older people and young adults – an important addition to the housing provision in rural areas. Some floor slabs serve as prototypes for innovative ceiling constructions made from natural, regionally sourced raw materials. In some cases, wood-clay composite slabs reinforced with willow replace the traditional reinforced concrete slab. In others, robots assemble offcuts of wood from wall production into ceiling elements with customised soffits. On the south façade, building-height structures made of interwoven bundles of flax fibres envelop the building like a second skin. They serve simultaneously as trellises, fall protection and natural shading. A monitoring phase is intended to show how natural and innovative building materials perform in use and what impact they have on the indoor climate and well-being.

Facts and Figures

Contact

Project initiator

Bässler Projektbau GmbH 
Tilman Bässler 
Steinstr. 25 
73037 Göppingen 

IBA’27 Project manager

Tina Muhr

Aerial View