of cultural

Restoration of cultural heritage

Construction is an activity that has left a lasting legacy to humanity that we have the opportunity to admire again and again.

Inspired by this very fact, ING-GRAD was founded as a construction company whose activities include specialized works comprised of: restoration and reconstruction of monumental heritage of exceptional historical and artistic significance.

In more than 35 years of work on the restoration and reconstruction of the monumental heritage, we have been using all the advantages of modern construction methods, but also applying unique knowledge based on the techniques, skills and recipes of old crafts.

Public buildings

In the cultural heritage restoration projects, we highlight the following works:

Static restoration

Most buildings of cultural or architectural heritage are brick buildings built of stone or brick wall elements connected with mortar, usually found in poor condition due to their age and inadequate maintenance. Therefore, before the renovation and final arrangement, it is necessary to carry out constructive restoration. The complexity of the historical buildings restoration requires the incompatibility of traditional and new materials and respect for their original existence, which is why the use of reinforced concrete is not recommended. The most favourable technique for repairing and strengthening such constructions has proved to be injection, i.e., stabilizing and closing cracks in damaged walls by injecting special injection compounds, applying reinforced cement or epoxy coatings on one or both sides of the wall, and pre-tensioning the walls.

Did you know?

The arrangement and furnishing of the Veliki Tabor Castle were preceded by its structural rehabilitation, which included static restoration of the stone walls and vaults. The stone structure was stabilized and strengthened by injection with special injection mortars and additionally strengthened by the installation of steel braces, which at the same time secured the building from shakes.

Reconstruction and restoration of wooden roof structures

Roofs of monumental heritage buildings are usually wooden roofs with different types of covering, depending on the tradition of the climate in which the building is located. The reconstruction of such wooden roofs implies the replacement of individual elements or the complete structure with new wood, most often made of Slavonian oak or conifer, and the replacement of the covers.

Did you know?

On the church of Sv. Marko (St. Mark), the symbol of the city of Zagreb, the reconstruction of the wooden roof was carried out with larch wood, and the covering was replaced with a new glazed tile made according to the original photo-geometric drawings of the builder Hermann Bollé. The new tile, like the original one, was made and delivered from Hungary.

Renovation and reconstruction of external and internal elements of the building

The renovation and reconstruction of the building includes the renovation of the external facade, the execution of profiles and stone plastic, the production of wooden joinery and everything that includes the restoration of the historical appearance and original condition. It is done according to conservation guidelines, which is why the restoration and reconstruction of the building is longer and requires specific materials, works and methods of execution.

Did you know?

On the project of the Museum of Slavonia in Osijek, renovation works were carried out on the facade and facade of the building by making lime plaster according to the original recipe. All materials were prepared and produced on the construction site. The specific colour of the facade was achieved with natural pigments obtained from the ash of larch wood.

Craftsmanship works on the restoration of the monumental heritage

After the constructive rehabilitation and external decoration of the building, a series of delicate and demanding craftsmanship works usually follow, which must be carried out in the spirit and tradition of the construction of the climate in which the building is located.

Did you know?

In addition to the fact that the area of ​​the Museum of Sinjska alka is arranged and equipped so that the modern museum and other equipment fit perfectly into the ambience of the old Venetian building, the wooden floor covering in the main hall, where there is a representation of the procession of Sinjska alka in real size, was made with a demanding and interesting technique that evokes the uneven surface of the Sinjska alka track.

more than80

renovated buildings

more than2000

year the age of the oldest restored building

Zerostrasse, Pula

Grad Pula

Public buildings

The underground tunnels system under the fortress and hills Kaštel consists of a lower complex of underground tunnels at the city level, the so-called Zerostrasse, and 11 m above them an upper complex of underground tunnels – the mezzanine. The fortress Kaštel is located 11 m above the mezzanine tunnels.

Pula underground tunnels were created during the Austro-Hungarian rule, just before the First World War for the needs of sheltering people in case of direct aerial attacks on the city. The Venetian fortress on top of the central city hill Kaštel (Hasfenkastell) served as warehouse, barracks and watchtower under Austrian rule. After the First World War, Italian authorities continued using Pula underground tunnels, widened and expanded them. After the Second World War, they were used as shelter for civilians and for the needs of medical corps. The basic idea of revitalizing the underground tunnels system is connecting the tunnels with the fortress Kaštel in one unit and facilitating access to the fortress from the level of city streets at the foot of Kaštel hill with an elevator. The primary request of the employer, which was for the last station of the elevator to be inside the Historical and Maritime Museum of Istria, was taken into account in the selection of elevator location.

The elevator connects all three levels, with three stations. The first station is in tunnels ZeroStrasse and it is located in the immediate vicinity of the central square that spreads in 4 channel arms. The reconstruction of the existing space with the access hall Zerostrasse was executed, as well as the access hall of the mezzanine (the second station). The third elevator station is inside the fortress courtyard and is the only visible element of the elevator structure. With the aim of fitting the new element as best as possible in the historic unit of the fortress Kaštel it was only appropriate to select glass from the esthetic, safety and functional standpoint.

The Zerostrasse tunnel walls were carved in bedrock, and it was necessary to preserve them as much as possible. Natural concrete and smooth lining were used in reconstruction. The hydrant network installations and point water drainage were realized within floor surfaces. In the central part of the tunnel, works were realized on concrete benches, and new concrete floors were executed, as well as rehabilitation of benches in all other tunnels. With the approval of the conservationist, the old metal entrance doors were removed on all entrances, and new doors were realized with lattice leaves for air passage.

Zerostrasse, Pula



ING-GRAD d.o.o. © 2023, All rights reserved! Privacy policy