Abstract
Engineering geological mapping takes a role in regional development stage. The research area located in Jatinangor education region has developed significantly in regional development. This research aimed to provide information on geology and engineering geology characteristics that can be used to support this development. This research method used laboratory testing based on ASTM and field study. The results showed the research area were dominated by young volcanic breccia and tuffs and generate residual soils that devided into silt low plasticity (ML), silt high plasticity (CH), and clay high plasticity (MH) according to USCS. Based on engineering geological data, the ML unit showed unit weight (ɣm) value from 1,462–1,850 gr/cm3, plasticity index (PI) value from 7,643–17,452 %, cohesion value from 0,118–0,438 kg/cm2, and angle of internal friction value from 18,188–33,539°. In MH unit showed unit weight (ɣm) value from 1,508–1,881 gr/cm3, plasticity index (PI) value from 7,217–69,667 %, cohesion value from 0,058–0,264 kg/cm2, and angle of internal friction value from 3,552–6,146°. In CH unit showed unit weight (ɣm) value 1,606–1,870 gr/cm3, plasticity index (PI) value from 17,522–62,507 %, cohesion value from 0,062–0,256 kg/cm2, and angle of internal friction value from 3,431–4,826 °.