The technology of reinforcing structures by the shotcrete method has been known for more than a hundred years. The first experiments using this method refer to approximately 1910-1912. At the same time, at this moment there are questions both with the calculation methodology of reinforced structures, and taking into account the new properties of shotcrete, which appear in this material as a result of improving equipment and material for shotcrete directly. This article examines the experience of calculating, projecting and applying shotcrete to strengthen load-bearing masonry structures accumulated over the past two years. The current methods of work are presented, as well as the corresponding methods of calculation justification (taking into account the stage of work on strengthening structures) for objects that are difficult from an engineering point of view: arches, brick walls with a large percentage of damage, including as a result of mine-explosive impacts. The results of the implementation of reinforcement of stone masonry by the method of one-sided applications of shotcrete are shown.