Simple house foundation models in potential landslide area (case study: Bojong Koneng Village, Babakan Madang Sub-District, Bogor District)

Abstract

Bogor Regency is a land area that has varied geomorphological conditions, mostly in the form of plateaus, hills and mountains with constituent rocks dominated by volcanic eruptions. This study was conducted to determine the topographic and geotechnical conditions at the Bojong Koneng location to determine the prediction of landslide areas, obtain the foundation planning criteria for simple houses in vulnerable areas, and design a foundation model suitable for simple houses in erosion-prone areas based on field survey in Curug Village, Bojong Koneng Village, Babakan Madang, Bogor Regency, West Java With a slope ranging from 10°-25° sloping to the north which is a soft black clay layer with the slope of the layer in the direction of the slope. In the existing slope model without Strauss piles, the safe slope stability factor (SF) is only around 1.02, so the slope is not fully declared safe. The installation of Strauss piles fondation theoretically helpbaas to improve slope stability for hard soil conditions at a relatively shallow depth from the ground surface or in this study at a depth of 5.20 meters. The SF value at the tip of the strauss pile is only attached to the hard soil layer, almost approaching the condition of the strauss pile penetrating 1.00 m deep hard soil. However, when viewed from the sliding plane of the Strauss pile fondation tip which is only attached to the hard soil layer, it behaves like a pile so this needs to be avoided in planning.