The article discusses the methodology for conducting building control using an information model of building structures and a cloud of points obtained using ground-based laser scanning technology. The proposed technique makes it possible to increase the efficiency of identifying geometric deviations in the course of monitoring the construction of industrial, civil and infrastructure facilities.

Keywords: digital technologies, BIM model, information model, point cloud, terrestrial laser scanning, construction control

Arched constructions of the roofs of span-type buildings are very cost-effective in comparison with beam and frame systems. In many cases, the high architectural qualities of arch structures allow one to obtain expressive interiors of large halls. At the same time, the construction of long span buildings is always associated with high risks, high security requirements for such buildings, and, consequently, increased requirements for reliability to load-bearing structures, including possible local destructions. Actual becomes the issue of ensuring the survivability of building structures in general, and the construction of roofs for long span buildings in particular. To analyze the survivability properties of shallow arched coverings, a number of constructive solutions of arched constructions of various types are considered. The work of arch structures of various types with possible local caving of a number of elements is considered. Five design schemes of arched constructions are presented, and work of each of them is considered at exclusion of the most loaded elements. In particular, the work of the arch structure with fan-shaped tie system with a split upper belt is considered. A comparative analysis of the survivability properties of the constructive solutions under consideration is presented.

Keywords: arched covers, arch structure with fan-shaped tie system, survivability, local destruction, constructive solutions, long span roofs, progressive collapse