Erweiterte Anwendungsgrenzen von DIN EN 1996-3/NA für Ziegelmauerwerk bei weit gespannten, teilaufliegenden Decken

Enhanced application limits of DIN EN 1996-3/NA for the design of brick masonry in case of partially supported long-span floors.

From masonry industry's point of view certain boundary conditions - e.g. the permissible span of floors - which limit the application of the simplified calculation method according to DIN EN 1996-3/NA do not match in practice. Modern buildings often have thicker floors which lead to more advantageous conditions when determining the load bearing capacity of masonry walls. Nowadays multi-span floors with longer spans exceeding the restrictions of DIN EN 1996-3/NA are more often applied. In addition to the requirements of the masonry standard concerning the carrying behavior of wall-floor-joints, a regulation exists in the concrete code (DIN EN 1992-1-1/NA) limiting the admissible deflection of reinforced concrete floors and simultaneously restricting the rotation of the floor at the support. In order to enable structural engineers a simple design of masonry walls in case of one-sided restrained floors with larger distances between supports, it is shown up to which span width the simplified calculation method according to DIN EN 1996-3/NA can be applied. A systematic parameter study of wall-floor-systems with spans exceeding 6.0 m demonstrated, that a design with DIN EN 1996-3/NA provides conservative results compared to the more precise calculation method according to DIN EN 1996-1-1/NA.