Descriptive Geometry and Computer Modelling in Support of Planning the Restoration of the Roof Covering of the “Dormition of the Mother of God” Cathedral in Varna

Preserving and restoring architectural monuments of symbolic national significance stand as an unequivocal priority for both local and state authorities. Indeed, with advancements in the technology, materials, and methods of work, there are some specific stages involved in the process of restoring historical buildings; however, maintaining their authentic form and impact poses a serious challenge, necessitating the development of innovative, non-standard technologies and the adaptation of a multifunctional methodology to achieve the desired outcome. The present study focuses on the restoration of the roof covering of the historical building of the "Dormition of the Mother of God" Cathedral in Varna, in terms of technological feasibility and cost-effectiveness. Proposed in this paper is a solution that strives to restore the magnificent roof in adherence to the heritage conservation principles by applying a genuine gold coating instead of retaining the previous dull goldish coating made from alkyd paint, yellow pigment, and gold dust. Through the implementation of descriptive geometry techniques and AutoCAD, followed by verification using Inventor, the study presents a feasible solution for accurately determining the surface area of the domes to be gilded.