Detection and documentation of stone material deterioration in historical masonry buildings using UAV photogrammetry: The Example of Mersin Sarisih Inn

The province of Mersin is an area where stone material is concentrated in terms of its geographical region, and in many historical areas in the region, stone structures are subject to deterioration due to various effects and protection interventions are often needed in the region. However, in the past, the lack of knowledge about the detection of material problems in the region has caused serious damage to historical textures and structures in many cases. The aim of the study carried out in this context is to document the material problems of the "Sarışih Han", which is a historical masonry building located in the Tarsus district of Mersin and which is of great importance to be preserved in terms of the continuity of the cultural heritage of the region, and thus to document the material problems for the sustainable management of the structures in the geographical region to contribute to its detection and repair. In this context, material problems in the structure were documented using the UAV photogrammetry method. The results of the study are important in terms of forming a guideline for the determination of material problems in the restoration phases of stone structures in Mersin. The findings obtained in the study show that the main damage observed on the stone surface of the building is eroded by the effect of water, and the problems caused by the lack of repairs in the worn areas have grown and plant formations have occurred in almost all of the facades, and the plant formations have caused large parts of fragmentation on some facades. It is seen that the joint loss on the stone surfaces and the deterioration of plant formation have reached advanced levels as a result of the exposure of the building to the effects of sun and water caused by the strong climate for centuries. Based on the determination results obtained in the study, it is hoped that correct applications will be made within the scope of the recommendations to be presented in the restoration of material problems in the restoration applications to be made in the geographical region.