ANALYSIS OF CORRELATION BETWEEN BEARING CAPACITY OF THE LAND AGAINST LAND SETTLEMENT AND DURATION OF DECLINE IN SEMARANG CITY

The city of Semarang has a bearing capacity that varies according to the type of land. The phenomenon of land subsidence also occurs with the length of time that varies according to the load and type of soil. Bearing capacity of the land (BCL) has a relationship with land settlement and duration of decline (DOD). The study has been conducted in Semarang city by taking 448 undisturbed soil samples scattered in the study area. Soil sample analysis have been carried out in the laboratory to obtain the bearing capacity of land, land settlement, and duration of decline. Analysis of data bearing capacity of land, land settlement, and duration of decline were using the correlation-regression method to get the level of correlation between variables quantitatively. The results showed that there is a relationship between bearing capacity of the land to settlement and duration of decline for a type of clay, silt, silt-sand, and sand. In silt soil types, the relationship between the bearing capacity of the land to settlement is classified as low with a contribution of 9% due to inconsistent compressibility coefficient of soil volume (Mv) caused by grain size gradation, there are gaps and thickness of the potential sinking layer (deformation) is heterogenous. Also on sand silt soil types, the relationship between settlement and duration of decline has a very low level of correlation with a contribution of 9% due to the consolidation coefficient (Cv) is inconsistent because the mass density of sand material is heterogenous.