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Modern multi-story buildings require holistic and sustainable building conceptions that provide a high flexibility of use and multi-functionality and thereby increase the building's service life and economy [1]. Special potential for improvement in this case provides the research area of floor-slab structures. Multifunctional and integrated floor-slab-systems can make a significant contribution to the creation of sustainable building structures. In this paper, a novel multi-functional composite floor system (InaDeck) is presented which incorporates all building services and installations into the structural element by means of an integrated installation floor. The floor-slab elements are made of prestressed composite beams with single flange and continuous shear connectors (filigree composite beams) which have large web openings for the routing of integrated building services. Due to a pre-stressed concrete chord at the bottom side of the cross section, the slab system features improved physical and fire protection characteristics and provides wide spans for increased flexibility at the same time. The article highlights the complex interactions between the disciplines of building services, building physics, structural engineering and fire protection. © 2014 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin.

Klinzmann C.,Hhpberlin Ingenieure fur Brandschutz GmbH | Upmeyer J.,O.b.u.v. Sachverstandiger fur Vorbeugenden Brandschutz
Bautechnik | Year: 2015

In Germany shopping malls have changed in recent times. This is the result of the fact that the operators of shopping malls are trying to drawing more and more people into their buildings and thus making them more attractive, leading to a multifunctional usage consisting of shopping, events and gastronomy. The main interest is to understand shopping as a part of leisure and make shopping an event. The multifunctional usage in most cases is not covered by the respective building law for special buildings, the Verkaufsstättenverordnung. The article shows and summarizes the key points of the change of shopping centres and explains the resulting difficulties with building regulations with the regard to fire safety. In addition future changes of the building regulations affecting the flexible use of shopping centres are discussed. Furthermore main elements of the fire safety concepts of two large shopping centre projects, the "Milaneo" in Stuttgart and "The Squaire" in Frankfurt, are explained. Copyright © 2015 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin.

Zehfuss J.,Hhpberlin Ingenieure fur Brandschutz GmbH | Klinzmann C.,Hhpberlin Ingenieure fur Brandschutz GmbH | Paliga K.,Hhpberlin Ingenieure fur Brandschutz GmbH
Journal of Structural Fire Engineering | Year: 2014

The objective of this article is the illustration of the calculation of natural fires and fire resistance of structural members based on the Eurocodes of two types of special structures, in this case a railway bridge and an airplane hangar. The railway bridge has a width of nearly 70 meters and consists of steel beams and a massive concrete slab that are supported by massive columns and walls and for that reason can be compared to a tunnel. The load-bearing structure of the roof of the hangars is made of steel and is supported by steel columns. The choice of a fire scenario on the safe side is crucial for the design process of the unprotected steel structure.

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