Over more than 160 years, the factory site developed its own unique structure. Spread over approximately 20 hectares, two complete construction blocks and additional buildings are arranged, partly interlocked. The buildings partly reflect different eras and construction materials.
The administration and research center dates back to the 1970s. The high-rise building is being renovated and made fire protection compliant from July 2017 until expected completion at the end of 2018. The floors were constructed with Robertson steel cellular decks. Simply put, these are steel trapezoidal sheets filled with concrete and topped with 5 to 6 cm thick additional concrete topping. The concrete filled into the trapezoidal sheet ribs is difficult to compact in the existing building. Therefore, an unknown concrete strength must be assumed. Steel cellular decks can only be used in multi-story buildings if they are fire protected by coverings on the underside. This is implemented in the renovation measure by a two-layer Promat cladding.
A disadvantage of the Robertson decks with fire protection cladding, however, is that utility lines within the suspended ceilings are hardly feasible. All the more convincing to the developer was the concept proposed by fischer: fischer fastening systems anchor the support strips of the two-layer Promat cladding for fire protection. Beneath this, a fischer installation rail grid system FUS is installed, serving as the support system for all further installation systems.
