New construction of an administration building where the shape of the building reminds of a steam locomotive and the roof terrace of a coal box.

The heating is fed entirely from the waste heat of the machines used in the production of strip pipes. The specific heat requirement corresponds to the value of a low-energy house according to KfW (Kreditanstalt für Wiederaufbau) and is even 50 % below the requirement according to the Energy Saving Ordinance for new buildings. Clina heating and cooling mats are installed under the ceilings to provide warmth in winter and a pleasant cooling in summer. Two ventilation systems on the roof of the LOK (locomotive) provide the necessary air exchange. With an integrated heat recovery system, almost 90 % of the heat can be recovered.1

1 Butting Gruppe, Auf dem Weg zu mehr Energieeffizienz,, Stand: 02.06.2021


Project title

"The LOK" BUTTING Wittingen



Building type

office building/
new construction


Gräflich + Monard Architekten


Butting Gruppe


CTM surface

886 m²