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This paper presents the results of the experimental research and numerical analysis of three reinforced concrete deep beams with openings, designed by the Strut-and-Tie method according to the EN 1992-1-1 recommendations. All tested specimens were made in full size, with the same geometric characteristics and quality of the materials. The specimens, constructed as simply supported beams, were loaded with two concentrated forces and were tested for bending until failure. Each specimen was reinforced with different reinforcement layout determined by parameter variation within the Strut-and-Tie method. Based on the results of experimental research, it was concluded that the behavior of loaded members was in agreement with the proposed forms of the Strut-and-Tie models that were used for their design.

This paper presents the results of testing of industrial steel rack subjected to maximum trial load. Testing confirmed that the overall behavior of the tested structure under exploitation load is highly dependent on the stiffness properties of beam-to-column connection. The obtained results showed that conventional approach to structural modeling by applying linear models and idealized behavior of connections can lead to wrong conclusion on its structural behavior and unsafe design of steel racks.