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All Journal Media Ilmiah Teknik Sipil Jurnal Pengabdian Masyarakat IPTEKS
Muhammad Najib Azhom
Universitas Muhammadiyah Surakarta
Humanities Civil Engineering, Building, Construction & Architecture Social Sciences Other

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Pengaruh Rembesan Pada Kuat Geser Tanah Jenuh Sebagian: The Ifluence Of Water Infiltration To Shear Strength Of Unsaturated Soil Gayuh Aji Prasetyaningtiyas; Kuswaji Dwi Priyono; Muhammad Najib Azhom; Muhammad Eryan Anindyaputra
Media Ilmiah Teknik Sipil Vol. 11 No. 1 (2023): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v11i1.4065

Abstract

This study aims to understand the interaction of engineering properties of unsaturated soil subjected to rainfall infiltration. It influences the variable of soil shear strength along with the alter of soil water content. A series of suction test was subjected to the silty sand layer, then the result was correlated with the change of soul degree saturation. The correlation then was implemented in soil water characteristic curve. A Bishop method was applied in this study to predict soil shear strength (τff) in variance of soil water content. Meanwhile, other samples from exiting condition were prepared. The samples were taken in rainy season and subjected shear strength test. The results then compared with the calculation of shear strength prediction by soil water characteristic curve. The research shows any high similarity between the prediction and the shear strength test value. Any change of shear strength value in prediction approach particularly was affected by the change of φb and X. The change of both parameters impacted to internal shear angle (φ’) thus, the infiltration mainly affected to the soil with low shear strength internal angle. This study is applicable for an area with unstable slope affected by rainfall infiltration such as landslide area
Sosialisasi Penataan Drainase Terbuka Sekolah Alam Aqila Gayuh Aji Prasetyaningtiyas; Anto Budi Listyawan; Muhammad Najib Azhom
Jurnal Pengabdian Masyarakat IPTEKS Vol. 9 No. 2 (2023): JURNAL PENGABDIAN MASYARAKAT IPTEKS
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jpmi.v9i2.863

Abstract

Aliran air dari persawahan di sekitar Sekolah Alam Aqila mengakibatkan adanya gerusan pada sturktur fondasi gedung kelas. Tidak hanya dari aliran persawahan, saat musim hujan tiba, genangan air di area sekolah meningkat kira-kira di atas mata kaki orang dewas. Hal tersebut menyebabkan kegiatan belajar dan mengajar terganggu. Fenomena ini membutuhkan solusi penataan drainase pada lingkungan sekolah alam Aqila yang berpotensi menyebabkan kerugian material dan immaterial. Kegiatan ini bertujuan membuka ruang diskusi mengenai penataan drainase di lingkungan Aqila. Pengabdian melibatkan pihak UMS dan Aqila dalam satu hari penuh, dengan cara investigasi lapangan, pengukuran, penyuluhan tata drainase dan diskusi lanjut.  mulai dari peninjauan hingga diskusi perencanaan. Penataan drainase permukaan dilakukan setelah sosialisasi oleh pihak Aqila. Hasilnya, gerusan fondasi struktur bangunan dapat teratasi. Sedangkan genangan air dialihkan menjadi bangunan danau pada sisi yang tidak mengganggu kegiatan belajar mengajar. Area ini justru dapat menjadi area belajar tambahan bagi siswa sekolah Alam Aqila.
Co-Authors Anto Budi Listyawan Gayuh Aji Prasetyaningtiyas Kuswaji Dwi Priyono Muhammad Eryan Anindyaputra