The article highlights the results of the technical inspection of the Central State Historical Archive of Ukraine building on the 3a Soborna sq., Lviv. The building was built around 1620. It is an architectural monument of national importance and an integral part of the architectural complex, including the Bernardine church. The building is attached to the northern wall of the church, and from the east, it is surrounded by walls with an entrance tower. The portals of the 17th century have been preserved in the interior and fragments of 18th century paintings. In the plan, the building has a complex configuration, and its body covers a square inner courtyard. The building is made of brick, three- and partly four-story. The walls are reinforced with stone buttresses. Tracking indicators of the technical condition of the load-bearing structural elements of the building makes it possible to determine the technical condition of individual elements and the building as a whole. Most often, the destruction of the object does not occur instantly – this requires a long-term influence of certain factors over time. Scheduled inspections carried out in time make it possible to establish the safety of further operation, to detect defects in the early stages and to prevent emergency technical conditions of buildings and structures. In addition, it can significantly affect the cost of construction and installation work and increase the term of further safe operation. Very often, in buildings subject to inspection, atypical constructive solutions are adopted, which are difficult to find in modern literature, and individual recommendations and approaches to solving the problem must be developed. During the inspection of the Central State Historical Archive of Ukraine on Sobornia Square in Lviv, elements of load-bearing structures belonging to an emergency technical condition were discovered. In order to prevent the destruction of the entire building, the detected defects must be eliminated during major repairs by strengthening. The article provides recommendations for removing the building from an emergency state.

1. State Standard of Ukraine-Guidelines B C. 1.2-18:2017. Guidelines for the Inspection of Buildings and Structures for their Assessment and Technical Condition Identification. Kyiv: “Ukrainian Research and Training Center of Standardization, Certification and Quality”, 2017. 47 p. [Valid from January 04, 2017].

2. Burchenia S., Vikhot S., Gayda O. (2024) The results of the technical inspection of the reinforced concrete bridge across the Desna river at km. 23+400 of the highway in the city of Turbiv. Bulletin of Lviv National Environmental University. Series Architecture and Construction, 25, pp. 85–91.

3. Vikhot S., Vybranets Yu., Mudryi I., Burchenia S. (2020) Rezultaty tekhnichnoho obstezhennia hromadskoi budivli po vul. Ulasa Samchuka u m. Lvovi. Visnyk Natsionalnoho universytetu vodnoho hospodarstva pryrodokorystuvannia, vol. 2 (90), pp. 144–152.

4. Burchenia S., Famuliak Yu., Vikhot S., Hrytsyna O. (2022) Results of the technical inspection of the foundation slab of the public building in Horodotska street, house 2 in the city of Lviv. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu: arkhitektura i silskohospodarske budivnytstvo, no. 23, pp. 27–32.

5. Yasniy P., Kononchuk O., Yakubyshyn O. (2017) Obstezhennia zbirno-monolitnoho perekryttia budivli pochatku XX st. iz zastosuvanniam suchasnykh metodiv diahnostyky [Hollow block floor’s survey of the building of the early 20th century using modern diagnostic methods]. Scientific Journal of TNTU (Tern.), vol. 85, no. 1, pp. 38–46. [in Ukrainian].

6. State Construction Norms of Ukraine C. 1.2-14: 2018. General Principles of Ensuring the Reliability and Structural Safety of Buildings, Structures and Foundations. Kyiv: Ministry of Regional Development, Construction, Housing and Communal Services of Ukraine, 2018. 30 p. [Valid from January 01, 2019].

7. Kramarchuk A., Ilnytskyy B., Lytvyniak O. and Famulyak Y. Strengthening prefabricated reinforced concrete roof beams that are damaged by corrosion of concrete and reinforcement in Reliability and Durability of Railway Transport Engineering Structures and Buildings, IOP Conference Series: Materials Science and Engineering 708, 012060. 2019. Doi: 10.1088/1757-899X/708/1/012060.

8. Vybranets Y, Vikhot S., Burchenya S. (2024) Field Tests and Analysis of Flat Monolithic Reinforced Concrete Slabs. Lecture Notes in Civil Engineering, pp. 484–497 р. Available at: https://doi10.1007/978-3-031-44955-0_49.

9. DBN V.1.2-14:2018. General principles of ensuring the reliability and structural safety of buildings, structures, building structures and foundations.

10. DSTU B V.2.6-156:2010. Concrete and reinforced concrete structures made of heavy concrete.

11. DSTU B V.1.2-3:2006. A system for ensuring the reliability and safety of construction objects. Deflections and movements.

12. Jelenski T. (2018) Practices of Built Heritage Post-Disaster Reconstruction for Resilient Cities. Buildings, 8 (4), p. 53.

13. Kramarchuk A., Ilnytskyy B., Lytvyniak O. (2022) The Features of Preservation of Architectural Sights of National Significance in Modern Urban Space Lecture Notes in Civil Engineering, Proceedings of Ecocomfortб vol. 290. Available at: https://doi.org/10.1007/978-3-031-14141-6_20.

14. Małachowicz E. (2007). Konserwacja i rewaloryzacja architektury w środowisku kulturowym. Oficyna Wydawnicza Politechniki Wrocławskiej, Wrocław.

15. Homon S., Gomon P., Gomon S., Litnitskyi S., Boyarska I., Chapiuk O., Chornomaz N. (2024) Study of the mechanical properties of coniferous wood of different ages at standard humidity. Procedia Structural Integrity, 59, pp. 545–550. Doi: 10.1016/j.prostr.2024.04.077.

16. Datsiuk V., Homon S., Gomon S., Dovbenko V., Petrenko O., Parfentyeva I., Romaniuk M. (2024) Effect of long-term operation on the strength properties of pine wood. Procedia Structural Integrity, 59, pp. 583–587. Doi: 10.1016/j.prostr.2024.04.082.

1. State Standard of Ukraine-Guidelines B C. 1.2-18:2017. Guidelines for the Inspection of Buildings and Structures for their Assessment and Technical Condition Identification. Kyiv: “Ukrainian Research and Training Center of Standardization, Certification and Quality”, 2017. 47 p. [Valid from January 04, 2017].

2. Burchenia S., Vikhot S., Gayda O. (2024) The results of the technical inspection of the reinforced concrete bridge across the Desna river at km. 23+400 of the highway in the city of Turbiv. Bulletin of Lviv National Environmental University. Series Architecture and Construction, 25, pp. 85–91.

3. Vikhot S., Vybranets Yu., Mudryi I., Burchenia S. (2020) Rezultaty tekhnichnoho obstezhennia hromadskoi budivli po vul. Ulasa Samchuka u m. Lvovi. Visnyk Natsionalnoho universytetu vodnoho hospodarstva pryrodokorystuvannia, vol. 2 (90), pp. 144–152.

4. Burchenia S., Famuliak Yu., Vikhot S., Hrytsyna O. (2022) Results of the technical inspection of the foundation slab of the public building in Horodotska street, house 2 in the city of Lviv. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu: arkhitektura i silskohospodarske budivnytstvo, no. 23, pp. 27–32.

5. Yasniy P., Kononchuk O., Yakubyshyn O. (2017) Obstezhennia zbirno-monolitnoho perekryttia budivli pochatku XX st. iz zastosuvanniam suchasnykh metodiv diahnostyky [Hollow block floor’s survey of the building of the early 20th century using modern diagnostic methods]. Scientific Journal of TNTU (Tern.), vol. 85, no. 1, pp. 38–46. [in Ukrainian].

6. State Construction Norms of Ukraine C. 1.2-14: 2018. General Principles of Ensuring the Reliability and Structural Safety of Buildings, Structures and Foundations. Kyiv: Ministry of Regional Development, Construction, Housing and Communal Services of Ukraine, 2018. 30 p. [Valid from January 01, 2019].

7. Kramarchuk A., Ilnytskyy B., Lytvyniak O. and Famulyak Y. Strengthening prefabricated reinforced concrete roof beams that are damaged by corrosion of concrete and reinforcement in Reliability and Durability of Railway Transport Engineering Structures and Buildings, IOP Conference Series: Materials Science and Engineering 708, 012060. 2019. Doi: 10.1088/1757-899X/708/1/012060.

8. Vybranets Y, Vikhot S., Burchenya S. (2024) Field Tests and Analysis of Flat Monolithic Reinforced Concrete Slabs. Lecture Notes in Civil Engineering, pp. 484–497 р. Available at: https://doi10.1007/978-3-031-44955-0_49.

9. DBN V.1.2-14:2018. General principles of ensuring the reliability and structural safety of buildings, structures, building structures and foundations.

10. DSTU B V.2.6-156:2010. Concrete and reinforced concrete structures made of heavy concrete.

11. DSTU B V.1.2-3:2006. A system for ensuring the reliability and safety of construction objects. Deflections and movements.

12. Jelenski T. (2018) Practices of Built Heritage Post-Disaster Reconstruction for Resilient Cities. Buildings, 8 (4), p. 53.

13. Kramarchuk A., Ilnytskyy B., Lytvyniak O. (2022) The Features of Preservation of Architectural Sights of National Significance in Modern Urban Space Lecture Notes in Civil Engineering, Proceedings of Ecocomfortб vol. 290. Available at: https://doi.org/10.1007/978-3-031-14141-6_20.

14. Małachowicz E. (2007). Konserwacja i rewaloryzacja architektury w środowisku kulturowym. Oficyna Wydawnicza Politechniki Wrocławskiej, Wrocław.

15. Homon S., Gomon P., Gomon S., Litnitskyi S., Boyarska I., Chapiuk O., Chornomaz N. (2024) Study of the mechanical properties of coniferous wood of different ages at standard humidity. Procedia Structural Integrity, 59, pp. 545–550. Doi: 10.1016/j.prostr.2024.04.077.

16. Datsiuk V., Homon S., Gomon S., Dovbenko V., Petrenko O., Parfentyeva I., Romaniuk M. (2024) Effect of long-term operation on the strength properties of pine wood. Procedia Structural Integrity, 59, pp. 583–587. Doi: 10.1016/j.prostr.2024.04.082.