Engineering Geology and Bearing Capacity Calculation of Soil in Karacadağ Region

Geotechnical investigations are highly essential for optimal planning of quality, time, and cost management in engineering structures. Geotechnical analysis is used to determine the physical and chemical properties of soils by performing laboratory and field tests. This study examines the geotechnical engineering of the Karacadag region in the Southeast Anatolia region of Turkey by analyzing soil data from the study area in Diyarbakır city, Sur County, Yukarıkılıctası district and block no 7018, parcel 1. The aim is to obtain general information about the soil in this area and to produce faster and more practical solutions in terms of quality and economic aspects in construc-tion projects. Drilling was performed in the field using UD and SPT tubes, and various laboratory tests such as sieve analysis and Atterberg limits were conducted on the samples taken. Using the parameters obtained from these tests, the bearing capacity of the basalt-rock soil related to the Karacadag Volcanism was calculated using the Turkish Building Earthquake Regulation (TBDY) and Plaxis 2D geotechnical modeling program. The bearing capacity calculation was performed using different methods, and the results were compared and evaluated in terms of safety and the effect of the parameters considered in the calculation.