Multi-Storey Residential Buildings in Krakow, Poland
MGM Konstrukcje Inżynierskie s.c.
These designed multi-storey residential buildings with commercial units on the ground floor and a one-storey underground parking garage are located in Krakow, Poland.
The four buildings are connected by expansion joints in the aboveground part, but have a common foundation plate. The three higher segments (two on the outer sides and one in the middle), with a height of 51.08 m, consist of 16 aboveground floors. The fourth segment has a height of 25.8 m and has 8 storeys. All segments have a common underground level extending beyond the outline of the aboveground structure.
Maisonettes are designed for the last 16 floors in each of the higher segments (the second levels are mezzanines).
At the garage level, the building is 96.56 m long and 54.00 m wide (in the curved part) and 28.40 m (in other areas). At ground level the dimensions of the left segment are 43.6x52.0 m and 42.5x21.0 m for the right segment. The height of the underground garages varies (in the top levels of ceilings) from 3.76 to 4.61 m. The height of the commercial part changes from 2.98 m to 3.83 m.
The foundation plate is 100 cm thick in the residential part and 80 cm in the courtyard (with local thickening in the column areas and passageways). The exterior garage walls are reinforced concrete with a thickness of 25 cm.
The underground floor located at the garage level is designed entirely as a monolithic slab with a slab-column system, with deep beams used as columns. Reinforced concrete walls were introduced at the entrance area of the garages and work as stiffeners in the vehicle traffic area – staircases and lift cores, as well as separating the technical facilities. The internal reinforced concrete walls are generally 25 cm thick, no less than 20 cm. The thicknesses of the lift core walls is 15 cm.
The aboveground floors are designed as a combined slab-wall system. At the ground floor, the system is complemented with columns. All floor slabs are designed as monolithic reinforced concrete slabs.
At the ground floor level, there are slabs designed with a thickness of 22 cm in the commercial part and 30 cm over the parts of the garage which extend beyond the outer walls of the aboveground structure. The floor slabs are 22 cm thick and are designed as continuous, cross-reinforced slabs.
The structural system for the residential part is a slab-wall system. Where it was possible, the load-bearing walls on the last 5 floors of every segment are designed as masonry walls from silicate blocks.
Individual dwellings are separated by non-load-bearing masonry walls from silicate blocks. The balcony and loggia slabs on residential floors are 18 cm thick. The stairway walls are made of reinforced concrete with a thickness of 20 to 25 cm. The flights of stairs which run through all floors are designed as two flights with 18 cm thickness for the landings and stairs.
Each segment of the structure is rigid because of the combination of the reinforced concrete walls that separate dwellings and the reinforced concrete walls of the vehicle traffic areas of the parking garage.
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