Landslide Treatment in the Al-Husainiyyah Junior High School Area using Cantilever-Geofoam Wall: Penanganan Longsor di Lingkungan SMP Al-Husainiyyah dengan Menggunakan Dinding Kantilever-Geofoam

Lim, Aswin
Pratama, Ignatius Tommy
Widjaja, Budijanto
Tjahjanto, Helmy Hermawan
Tjondro, Johannes Adhijoso
Wijaya, Obaja Triputera
Ginting, Bobby Minola
Setiawan, Theresita Herni
Adianto, Yohanes Lim Dwi
Hidayat, Felix
Hartieni, Patricia
William, Octavianus
Aldrianita, Tabitha
Fadhil, Imam Ahmad

Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Vol. 8 No. 4 (2024): Dinamisia: Jurnal Pengabdian Kepada Masyarakat

A landslide triggered by heavy rainfall occurred in the Al-Husainiyyah Junior High School area on April 26th, 2023. The landslide damaged the nearby access roads, the existing retaining wall, and a futsal court threatening the safety of the teachers and students in conducting the learning activities that especially require open areas. Thus, this community service aims to provide a cantilever wall design with geofoam as an innovative lightweight backfill material to reinforce the slope and repair the damaged structures. Field surveying and numerical analysis were then conducted to understand the current slope and soil conditions and to analyze the stability of the slope and retaining wall. The results show that a cantilever wall with a total height of 1.8 m supported by a strauss pile row with a diameter of 0.4 m, 4 m in length, and 2.5 m in spacing could increase the stability of the slope.