UJI KEKUATAN SPT BATUGAMPING GOLOK DAN KALKARENIT GOLOK DAERAH PULAU MIANG, KECAMATAN SANGKULIRANG, KABUPATEN KUTAI TIMUR, PROVINSI KALIMANTAN TIMUR

Abstract

This research was conducted on Miang Island, Sangkulirang District, East Kutai Regency, which took place from 22 October to 22 December 2022. The aim of this research was to determine the SPT Strength Value with drilling carried out on Miang Island, to determine the characteristics and strength of the rocks, and explains the comparison between regional points where the SPT test is carried out.

In accordance with the stages in the construction process of a civil building construction, a complete and detailed planning of the building plan (drawing design) is always required. For this reason, planning data is first needed, including location surveys, topography, geology, and complete soil investigations before construction is built. The foundation is one of the building elements that has a very important role in transmitting forces from the upper construction elements to the subgrade. Therefore, the strength of the foundation must consider the suitability between the load from the construction and the bearing capacity of the soil. Bowles (1997) states that there are two general requirements that must be met in planning foundations. Firstly, the subgrade must be able to support the construction load without experiencing shear failure, and secondly, the foundation settlement that will occur must be within permitted limits. The results of foundation planning in the form of type, depth and dimensions of the foundation based on SPT value data can be compared with the results obtained based on physical and mechanical property data from laboratory tests.

Keywords: Geology of the research area, SPT, Golok