ABSTRACT
This paper presents the case study of the Chinese Theatre in Pushkin, a federal-level cultural heritage site. The geotechnical and geoenvironmental analysis has been performed of its premises to provide descriptions of the natural conditions onsite and in the adjacent area. The analysis has revealed a highly heterogeneous geological profile with quaternary deposits underlain by rocks of diverse genesis and physical-mechanical properties, which form part of the active zone of the foundation bed. Given the effect this finding may have on the reconstruction project, the onsite soil conditions have been divided into types for the convenience of decision-making. The analysis produced an engineering-geological estimation of the bedrock with special focus on the dictyonema shale occurring at a shallow depth. A source of radon hazard, dictyonema shale can be affecting the area’s geoecological environment. The site is found to be insufficiently covered with radon hazard monitoring. Radon flux density is measured only in the surface layer of the intact soil. In this context, a more in-depth analysis is needed based and recommendations are proposed for such analysis.
