Falkensee School
// Timber construction has become increasingly popular in recent years. At the same time, other natural building materials such as straw, cork or clay are coming back into focus because they can be composted at the end of their service life and returned to the material cycle according to the cradle-to-cradle principle. This idea was fully realised in the Rammed Earth school pavilion in Falkensee near Berlin in Brandenburg.
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The Vicco-von-Bülow-Gymnasium in Falkensee, which specialises in arts and crafts, has been given an ecologically designed exhibition pavilion for the artwork of its pupils. The new building, which can be used all year round, serves as a place for meeting and events and also functions as a classroom.
The school's pupils were also involved in the design and planning process. Together, they developed their own design ideas, which were then incorporated by Marlene Braun and Olin Petzold's bachelor project at the TU Berlin.
All the walls of the pavilion are made of rammed earth, while the wooden supporting structure of the roof consists of a double layer of beams and form work made of OSB boards. For roof waterproofing EPDM was chosen. The material has excellent ageing characteristics, ecologically safe and also offers the possibility of eco friendly recycling.
The new building thus largely corresponds to the cradle-to-cradle philosophy, a sustainable ecological approach that envisages a closed raw material cycle modelled on nature. Only the floor slab was made of conventional reinforced concrete for structural reasons.
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Installation of Waterproofing
The selected EPDM waterproofing HERTALAN® EASY COVER was provided by CARLISLE® as part of a sponsorship programme. The material combines the excellent material properties of EPDM synthetic rubber with optimum solutions for installation. The membranes can be delivered as a made to measure sheet for fast installation. Our special hot bonding technique (vulcanisation) can weld EPDM sheets together at our factory, this way HERTALAN® produces an EPDM flat roofing system that can virtually seal an entire roof at once.
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Another special feature is the option of mechanically fixing the HERTALAN® EASY COVER membrane. The Induction System is a penetration-free mechanical fixing solution for HERTALAN® EPDM membranes. The induction device is activated directly using the specially coated fastening plate. The coating on the fastening plates is heated to approximately 280°C and thus liquefied by means of induction. The heating process only lasts five seconds if the device is calibrated to the ambient temperature, the lining thickness and the power source. Straight after welding, a permanent connection to the HERTALAN® EPDM membrane is created within 45 seconds due to the magnetic cooling rods applying firm pressure on previously welded fastening plates.
If the roof is to be extended at a later date or if the building has to be demolished, the EPDM membrane can be removed from the retaining plates by reverse induction without causing damage and can be reused without hesitation or subsequently recycled accordingly.
Roland Fritsch
Further Articles
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