AB Finja Prefab

Flexible concrete frames for houses

Figure: Ola Torrang

Ola Torrang got inspired by Japanese architecture and combined this influence with state-of-the-art, efficient precast technology

Figure: Ola Torrang

The complete concrete frame

Figure: Ola Torrang

Longitudinal section of the building

Figure: Ola Torrang

Three skilled workers and a 50 tonne truck-mounted crane are required to erect the concrete frame

Figure: Ola Torrang

One of the two steel beams is being mounted; these steel beams connect the external walls at ground-floor level

Figure: Ola Torrang

The longitudinal section shows the transition between the upper-floor external wall unit and the roof

Figure: Ola Torrang

Assembly of the concrete wall units of the rectangular upper floor

Figure: Ola Torrang

Assembly of the concrete frame for the octagonal ground floor and rectangular upper floor has been completed

Figure: Ola Torrang

The sandwich roof elements are being lifted into place. The roof structure is self-supporting after assembly

Figure: Ola Torrang

AB Finja Prefab, a Swedish producer of concrete elements, has been manufacturing precast elements for a particular type of house for over 20 years. Despite this long-standing market presence and its success in Sweden, this unique precast element design is not very popular in other countries. Not just the external walls but also the roof structure consist of 0.5 m thick sandwich elements made from concrete. The octagonal concrete frame is fully self-supporting, which enables unrestricted flexibility. Loads are distributed across eight corners. The house’s footprint amounts to only 88 m²;...