WOOD – THE BUILDING MATERIAL OF CHOICE FOR INNOVATIVE CONSTRUCTION PROJECTS

B&O SETS NEW STANDARDS WITH ITS PILOT PROJECT – A FOUR-STOREY APARTMENT BUILDING MADE OF WOOD

Using wood to build multi-storey buildings is not at all common; wood is not generally thought to be the best construction material in urban areas. B&O’s four-storey apartment house project proves the opposite. Its six units, each with 60 to 120 m² of living space, excel the latest in new residential outfitting. The building’s varied floor plans and an elevator for barrier-free access to apartments offer a maximum of flexibility. For the most part, walls, ceilings and roofs in wooden buildings are prefabricated, saving construction time and money. This makes standardized buildings increasingly attractive for the housing industry.

Wood is effective for thermal insulation, soundproofing and fire protection

The frame construction, the elevator shaft, and the balconies of the building are made of wood and are reinforced to be self-supporting. This method of construction enables us to meet the demanding soundproofing standards of the German Institute for Standardization and the Association of German Engineers. Because wood and plaster have a positive effect on the regulation of humidity, the use of these materials ensures a comfortable and healthy room climate. Each wooden element is manufactured in advance, from built-in parts to surface finish, so that once they are at the construction site they only need to be assembled and mounted.

For a detailed article in the trade magazine Die Wohnungswirtschaft click here.

Holzbau
(Quelle: Schankula Architekten)

Advantages of using wood for multi-storey buildings

  • Short construction times mean that disruptions in the neighborhood are kept to a minimum.
  • Apartments are rented out rapidly.
  • The indoor climate is good.
  • Wood construction represents active environmental protection by means of carbon storage and grey energy. (Carbon storage: 250 m³ of wood were used in this project, which equals to the CO2 emissions produced by one modern automobile in 165 years of service life.)
  • Wood can be recycled or used as a source of energy at the end of its service life.

Applications – existing buildings and new construction

Short construction times make wood suitable for multi-storey buildings in urban densification projects. The same applies to the replacement of old building stock when retrofitting is not an option. Multi-storey wood structures are lightweight and therefore easily erected on the basement foundations of demolished buildings.

Energy efficiency standards – from ‘KfW efficiency house 40’ to passive house

The final energy consumption value of 30 kilowatt/hours per square meter is well below the requirements laid down in Germany’s energy conservation ordinance (EnEv), allowing us to meet the criteria for a ‘KfW efficiency house 40’. By making a few small changes, such as installing triple-glazed windows, we can even meet the passive house standard.

Since there are very few building codes regulating fire safety, soundproofing and the structural integrity of wooden buildings, B&O has been working together in this regard with the Technical University of Munich, the Rosenheim University of Applied Sciences, and ift Rosenheim.

Wood allows B&O to develop and build apartment complexes quickly with an alternative and innovative construction material.