Master of Saint-Petersburg State University of Architecture and Civil Engineering Ayat Alnazhzhar from Jordan, supervised by the Professor of the Department of Engineering Consrtuctions, SPSUACE, A.N. Egorov developed the method and technology of preserving the historical complex by erecting a geodesic dome over it.

There are outstanding monuments of ancient architecture on the territory of Jordan. At present, there is an urgent problem of preserving historical buildings. Scientists and engineers are faced with the task of creating effective methods and technologies for preserving historical complexes.

Ayat Alnazhjar conducted an expert analysis of historical buildings and chose Umm-Alaras (St. Stephen's Church). The object has a religious, historical, architectural value and it is protected by UNESCO.

Ayat Alnazhzhar proposed a geodesic dome to protect Umm-Alaras from external influences, which is a construction of cells in the form of triangles. Cells form a stable structural system, providing strength, stability, building reliability in conditions of negative natural influences.

The surface square of the geodetic dome is only 38% of the surface square in traditional buildings. The smaller surface of the building makes it less prone to outside temperature fluctuations. This provides a lower energy consumption for heating in winter and cooling in summer. In addition, geodesic domes can be quickly erected without the use of powerful crane equipment. All these advantages make geodesic domes the best way to protect historic buildings.

In her thesis, Ayat Allanjar proposed a design algorithm and formed a structural and technological solution to the geodetic dome to protect the historical complex of St. Stephen's church in Jordan: the frame is made of fiberglass box-shaped, the junction of the T-star elements is made of stainless steel, the dome has a transparent polycarbonate coating, internal stairways are provided for installation of lighting fixtures and maintenance; diameter of the dome is 38 m, height is 19 m, weight is 5 tones.

The author proposed the technology of mounting the geodesic dome structure (method of PGK) by the method of undergrowth, based on the installation of the dome on a special installation site located near the historical complex with the use of a system of hydraulic jacks displaced in a certain technological sequence, which ensures a high level of technological construction. After the installation of the dome structure, it is installed over the historical complex in a design position on a pre-facricated pile-and-mortar foundation made of monolithic reinforced concrete. Sparing Fundex technology which does not have a negative impact on the soil of the historical complex is used for piles.