8-STOREY TIMBER BUILDING, Bad Aibling D

Transcription

1 8-STOREY TIMBER BUILDING, Bad Aibling D

2 binderholz supplied the binderholz CLT BBS used to construct the tallest timber house in Germany that was erected on a disused military base in Bad Aibling. The exemplary project has 8 storeys and a height of 25 metres. The house is just the beginning - it will one day be the centrepiece of the Timber Town of the Future. Project description The 8-storey building in Bad Aibling is an architectural milestone. The project is a collaboration between residential housing provider B&O, architecture firm Schankula, timber construction company Huber & Sohn and binderholz as the supplier of cross laminated timber BBS elements. We wanted show what wood can do, says architect Arthur Schankula. B&O s mid-term target is to construct a zero energy town in Bad Aibling, upper Bavaria. The University of Rosenheim was appointed to cooperate in the creation of a model of energy efficiency at an urban development level. The project is supported by the federal ministry for economy and technology within the eneff:stadt research initiative and is founded on four guiding principles: Sustainable, co 2 -free energy supply, decentralized and self-sufficient Innovative, low-energy timber construction Living and working in the same location Varying standards of modernisation as examples of housing industry requirements

3 8-storeytimber building 03 Site plan Architecture SCHANKULA-Architekten Diplomingenieure Building owner B&O Gruppe General Contractor Huber & Sohn GmbH & Co. KG Execution 2011 Dietrich-Bonhoeffer-Straße Photo: Schankula-Architekten Anne-Frank-Straße

4 Photo: Schankula-Architekten Ansicht West

5 8-storeytimber building 05 Floor plans Office, ground floor and 1st floor 15 barrier-free living, 6th floor Photo: Schankula-Architekten

6 Photo: Schankula-Architekten Penthouse, 7 th floor Construction Construction time was massively reduced through a high degree of prefabrication which included the stairwell, balconies and building management facilities. The components for walls, ceilings and roof were prefabricated, delivered to the building site and assembled on site. The structure comprises 750 m 3 of spruce wood. Huber & Sohn s assemblers completed a storey every two days with just four to six workers on site - an astounding achievement for a project of this scale. Sophisticated drilling Special dual-axis, angular holes were drilled into the binderholz CLT BBS elements at the binderholz plant. All of the screw connections had to be considered and prefabricated in advance. There is virtually no settling of the 8-storey building thanks to a special solution combining the BBS ceilings and concrete. The building s entire support structure - i.e. walls and ceilings - is made of wood. Only the stairwell core was cast in concrete. All of the BBS ceilings - some of which are made of high-grade wood for visible areas - were supplied by binderholz. The top storey (= penthouse) is designed entirely in binderholz CLT BBS and consists mainly of high-grade timber. It is an impressive demonstration of the fact that fire protection in timber constructions has nothing to do with the flammability of the building material. Energy Building with wood means achieving virtually passive house standards at a normal price. The building s energy household is supported by two wind power plants; it has a heating energy requirement of 18 kwh/m² and is therefore close to the passive house standard.

7 8-storeytimber building 07 System optimisation in timber construction During this pilot project the architect and building owner also cooperated with the Technical University of Munich and the engineering company belonging to Professor Stefan Winter. This cooperation deepened the competence in the following areas: Constructive fire protection solutions in multi-storey timber construction Type certifications Integration variants for building management facilities Fulfilment of raised noise protection requirements in accordance with Vdi 4100 Construction process optimisation The floor plans for the eight 165 m² storeys have not yet been defined. Ernst Böhm, the boss at B&O, envisages a mixture of working and living environment. The future residents will decide on the layout of the rooms. Interchangeable, non-load-bearing elements enable floor plans to be changed within a single day at a later date. The timber house will soon have neighbours. B&O has acquired the entire plot of land in Bad Aibling. Böhm wants to build a zero energy town, the timber town of the future. One day, 400 people will live and work there, with energy from regenerative sources. Construction work began on 16 May after the completion of the stairwell core. The waterproofing on the flat roof was installed on 10 June. The building was therefore completed in less than four weeks. Construction time would have been even shorter had there not been a public holiday and extended weekend on 2 June. The project impressively demonstrates that binderholz CLT BBS offers the same advantages for tall buildings and is a worthy replacement for concrete, steel and brick. The building will contribute towards helping establish timber as a construction material for multi-storey residential buildings in urban areas.

8 Binderholz Bausysteme GmbH A-5400 Hallein/Salzburg fon fax GB