ings, etc. The cellular beams serve for concealing air ducts and other cabling, the visi-bility of which is however ingeniously suppressed by impressive illumination. The investor expressed the demand for additional sales areas outside the basic ground plan area of the building. This was realized by means of bracket plates which are suspended on the steel structure by oblique tense steel profiles. These “drawers” are arranged absolutely irregularly on the rear façade of the object above the railway, it is architectonically very impressive. Foundations Four anchoring bolts with T- heads anchor the structure into the foundations. Steel concrete feet are positioned on concrete pilots (each one with bearing capacity of 500 kN). The foundation of the building on site was very difficult (pilots). The seismicity is of 7o MSK-64, category “A”. Material and loading data The horizontal bearing structures of the top of the building are concrete plates of thickness 100 mm (concrete B30). The foundation and bearing structures were designed acc. to ENV 1993-1-1:1992 Euro code 3. The design of the construction consists of the calculation and the evaluation of a number of load cases and their complex combination effect: the dead load (own weight) was considered as well as the live load - on each floor 4,00 kN/m², on the stairways 3,00 kN/m², snow loading so = 0,70 kN/m² and wind loading wo = 0,55 kN/m² (during erection and on final building). After that was considered the seismicity of 7o MSK-64, category “A” and temperature loading (shell structure contains a higher tem-peratures as column support during operation, which leads to thermal stresses). Description of the method of Static calculation The static calculation is prepared with software NEXIS rel. 3.40. Not less than 164 of the most dangerous combinations, acc. to ENV 1993-11:1992 Euro code 3 with coefficient 1,35 in two basic combinations (bearing capacity and deformations), have been calculated. The model contains 1715 nodes, 3177 bars and 1786 macros 1D. The final file was 22,5 MB. The model contains 130 different profile sections of both basic materials - steel and concrete. The linear base modulus (3D frame) had to solve 10290 equations. The program for the calculation of cellular beams acc. to procedure by F. Faltus was done with software MC rel. 7. 115
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