Non-destructive methods for evaluation of the state of preservation in historical stone monuments: The case study of the Step Pyramid in Saqqara

This study aims to facilitate visual interpretation of the photo documentation data by evaluation of the 3D model of the Step Pyramid of Djoser using Micro Station V8i software. The integration of the data into the 3D model allowed to make number of conclusions regarding the structure of the Step Pyramid, potential threats to its stability, stone material used for the construction of the pyramid and differences in quality of the mortar applied. The results of this study denote high potential of this methodology for its application in preliminary studies of stone monuments on Memphite necropolis area to contribute the elaboration of future preservation and conservation strategy.