PSI - Issue 64

Galić Josip et al. / Procedia Structural Integrity 64 (2024) 908 –917 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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2. The existing state of the building structure 2.1. Structure

The existing building is part of a complex consisting of two structurally separated units. The analysis in this study is focused on the street building with a T-shaped layout (highlighted in yellow in Fig. 1). The plan dimensions of the building are L x × L y = 21.0 × 32.5 m, with an above-ground height of h = 20 m. The building consists of a basement, ground floor, and 5 floors. The load-bearing structure of the entire building consists of a reinforced concrete frame system of columns and beams. The frames extend in the longitudinal direction (marked in blue in figures 3 and 4) and in the transverse direction (marked in yellow in fig. 3 and fig. 4). In the ground floor, the longitudinal beams of the frame on the facade have dimensions of b/h = 60/40 cm, while on the central longitudinal frame, they are b/h = 90/35 cm. Transverse beams of the frame in the ground floor have dimensions of b/h = 50/35 cm. All frame columns have dimensions of b/h = 40/60 cm. On the floors above the ground floor, in the longitudinal direction, the beams on the facade have dimensions of b/h = 25/40 cm, while there are no central longitudinal beams on the floors. In the transverse direction, the frame beams have dimensions of b/h = 40/80 cm. Solid brick infill walls are constructed between the load-bearing frame elements and show lack of resistance like in Brehm (2009).

Fig. 3. (a) Original foundation plan; (b) Original ground floor plan

Fig. 4. (a) Original first floor plan; (b) Original section of building