Abstract
The facade walls of ancient Russian landmark buildings built of brick or natural stone, are generally flat, have a complex relief created in order to obtain an effect of light and shade in side lighting. In the restoration, reconstruction, as well as new construction in retro style, this relief should be reproduced. The report describes the “flat” relief of the 19th century’s landmark building – the church in the Abramtsevo estate near Moscow. The surface was scanned with Trimble S6 electronic tacheometer with subsequent processing by 3D Reshaper Survey Bundle program and mathematical description of digital data using the theory of random functions. It was established that the wall surface can be modeled by a nonstationary random function with two harmonics. To realize a model in the masonry of the restored or reconstructed wall, the basic technology was proposed, which embraced techniques of researching, designing and reproducing the surface of an uneven facade wall.
Highlights
Today, Russia faces large-scale restoration and reconstruction of historic buildings
This paper explores the unevenness of the wall surface of the historic building and offers a technology of reproducing its surface in the course of restoration
The realizations of the random function describing the wall surface were taken along the sections parallel to the coordinate planes XZ and YZ
Summary
Russia faces large-scale restoration and reconstruction of historic buildings. The work is carried out by Russian and foreign companies that have public licenses for restoration work They are guided by the restoration standards [4], which do not provide for the reproduction of a complex surface in the generally flat wall. Its look is different for different parts of the wall This can be relevant for modern buildings that often have large and undivided wall surfaces. We affirm that the complex relief is a deliberate way of decorating the wall plane and should be reproduced during restoration similar to the surviving parts of the restored monument, and if a lost monument is to be reconstructed – using the structures of the same style and epoch as the reconstructed one. This is done in this paper mathematically using the standard geodetic equipment for digitizing an object with subsequent processing by conventional computer programs
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