Chemical and Microbiological Properties of Diagnostic Layers in the Filling of the Foundation Pits of Medieval Buildings

The concept of diagnostically significant layers within the filling of medieval buildings foundation pits has been suggested in the article. The term “diagnostically significant layers” has been proposed to define the layers with specific morphological, chemical and microbiological properties that had been forming in the filling of pits as a result of certain processes. This paper presents a systematization of Different diagnostic layers have been systematized in the article, and their composition, properties and conditions of formation are described. The study was conducted on the Dmitrovskoye-2 and Kruzhok medieval sites (Moscow oblast). The proposed concept can serve as the basis for retrospective analysis aimed at the following trends: layer properties –mechanism of its formation; initial material – its participation in building functional operation.