Quality Control of Hidden Construction Work Using Photographs Attached to Inspection Reports

Introduction. In construction production the problem of increasing the reliability of information contained in the certificates of inspection of concealed works is more and more often solved with the help of their photofixation. Based on the results of earlier studies, the authors prove that using the diagnostic informativeness of photographs it is possible not only to confirm the fact of execution of concealed works in the required volume, but also to obtain additional information about their quality. For effective extraction of this information it is necessary to develop a method of quality control of hidden construction works on the basis of photographs attached to the inspection certificates, taking into account modern scientific achievements in the field of photogrammetry and color-texture analysis of photographic images.Materials and Methods. The developed method of quality control of hidden construction work is based on the use of contour, pixel, macro- and micro-texture analysis of photographic images. When developing the method, the results of numerous visual inspections of building structures (including the opening of their internal elements) and comparison of these results with the information contained in the certificates of certification of concealed works were used.Results. The article presents the results of a study carried out at the Don State Technical University on the development of a method for quality control of hidden construction work using photographs attached to inspection reports. The algorithms developed by the authors for analyzing photographs of building structures to control their quality are presented. The article contains proposals for the systematization and storage of typical textures of surfaces of building structures.Discussion and Conclusion. The priority condition for successful application of the new method of quality control of concealed construction works is its methodological support, which establishes a unified procedure for their photo fixation, additional requirements for the composition and parameters of photographs, rules of registration, storage and use of them as annexes to certificates of inspection of concealed construction works, as well as the regulations for comprehensive analysis of photographs with the use of appropriate software.