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All Journal Sainstek Jurnal Teknik AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat FROPIL (Forum Profesional Teknik Sipil) Reswara: Jurnal Pengabdian Kepada Masyarakat Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) BIOCHEPHY: Journal of Science Education Jurnal Pijar MIPA Composite Journal Jurnal Natural Jurnal Manusia dan Lingkungan Journal of Applied Civil and Environmental Engineering (JACEE)
Indriati Martha Patuti
Universita Negeri Gorontalo
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences Transportation

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SUSEPTIBILITAS MINERAL MAGNETIK PADA SEDIMEN VERTIKAL DANAU LIMBOTO DI AREA PERTANIAN DAN PEMUKIMAN Rahim, Niarti; Yunginger, Raghel; Patuti, Indriati Martha; Gafur, Nurfitri Abdul; Supu, Idawaty; Kurniasari, Septiana; Setiawan, Dewa Gede Eka; Jahja, Mohamad; Demulawa, Meilan
BIOCHEPHY: Journal of Science Education Vol. 5 No. 1 (2025)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52562/biochephy.v5i1.1501

Abstract

Danau Limboto telah mengalami degradasi yang sangat signifikan yang disebabkan di antaranya adalah tingginya pasokan sedimen dari sungai sebagai inlet danau yang menyebabkan menurunnya fungsi danau baik untuk sektor ekonomi, pariwisata maupun untuk penyeimbang sistem ekologi. Oleh karena itu diperlukan solusi untuk mengendalikan laju sedimentasi di antaranya dengan menganalisis suseptibilitas agar dapat memahami kerentanan terhadap faktor-faktor yang menyebabkan kerusakan danau, yang berdampak negatif terhadap fungsinya. Analisis suseptibilitas pada penelitian-penelitian sebelumnya hanya menganalisis sedimen terhadap permukaan. Sehingga tujuan penelitian ini menganalisis suseptibilitas magnetik pada sedimen vertikal Danau Limboto khususnya di area pertanian dan pemukiman yang sekaligus sebagai area sempadan danau. Metode penelitian ini menggunakan survei dan analisis laboratorium dengan metode kemagnetan batuan pada parameter suseptibilitas dengan menggunakan alat Bartington MS2B yang berkerja pada dua frekuensi. Sampel sedimen tidak melalui proses preparasi tetapi langsung dimasukan ke dalam holder. Hasil penelitian menunjukkan nilai suseptibilitas magnetik berkisar antara 13,4x10-8m3kg-1 hingga 807x10-8m3kg-1. Sementara itu persentase suseptibilitas magnetik bergantung frekuensi (?FD%) berkisar antara 0,161% hingga 1,87% dengan rata-rata 0,903% yang terukur pada 20 sampel. Terdapat semua sampel mengandung mineral ferimagnetik. Penelitian ini dapat memberikan informasi tentang proses-proses fisik dan lingkungan yang mempengaruhi sedimentasi, menjadi penanda sedimen yang dikontrol oleh antropogenik dan litogenik yang masuk ke Danau Limboto.
Analisis Besaran Erosi dan Stabilitas Lereng dengan Perkuatan Soil Nailing Balu, Rasyid; Patuti, Indriati Martha; Achmad, Fadly
Jurnal Teknik Vol 23 No 1 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i1.614

Abstract

The Gorontalo Outer Ring Road (GORR), with a length of 45.3 km, is a road constructed by cutting through the foot of slopes, posing a potential risk of landslides. Land-use changes on the slopes have been utilized by local residents for agricultural purposes and tourist attractions. This, of course, can affect the stability of the slopes surrounding the road. Therefore, this study aims to determine the magnitude of erosion and slope stability along the Gorontalo Outer Ring Road. In this study, erosion analysis was conducted using the USLE (Universal Soil Loss Equation) method, while slope stability analysis – both natural and reinforced with soil nailing – was performed using the Bishop method with the aid of Geo5 software. Based on the research results, the erosion analysis using the USLE method found that the average erosion rate on the northern slope is 79.77 tons/year, while the average erosion rate on the southern slope is 25.27 tons/year. The slope safety factor analysis shows that the southern slope under seismic load has a safety factor (FK) of 0.78, while the northern slope under seismic load has a safety factor (FK) of 0.66. Slope safety factor analysis with soil nailing reveals that the southern slope under seismic load has a safety factor (FK) of 1.87, and the northern slope has a safety factor (FK) of 1.73. Based on the analysis results, the slopes meet the required standards, with FK > 1.11 in accordance with SNI 8460:2017.
TINJAUAN KESTABILAN PERKUATAN LERENG MENGGUNAKAN DINDING KANTILEVER DAN DINDING GRAVITASI Eka Liani, Annisa; Patuti, Indriati Martha; Bahsuan, Rifadli
Composite Journal Vol. 1 No. 1 (2021): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (468.339 KB) | DOI: 10.37905/cj.v1i1.11

Abstract

Parts of Gorontalo are hills and mountains close to community settlements, which are prone to landslides. To do a research on literature review that analyzes slope reinforcement models, which will be taken into consideration for slope improvement steps in Gorontalo. Slope reinforcement includes retaining walls, gravity walls, cantilever walls and crib walls. This research discusses slope reinforcement models and their stability behavior analysis. Secondary data is in the form of research journals on slope reinforcement models. Calculation data that will be used as experimental data for modeling other retrofitting walls are obtained from the results of research from one of the reviewed journals, namely multilevel gravity walls. The wall that will be analyzed is the retaining wall of a multilevel cantilever type of wall. Analysis of active soil pressure using the Rankine method and slope stability analysis using the slice method which is carried out with the help of 2D Slide software. Based on the results of the stability analysis of slope reinforcement with the selection of stratified cantilever wall reinforcement, the value of the safety factor against sliding (Fgs) is 1.63>1.5, the safety factor against overturning (Fgl) is 2.44>2.0, the safety factor against the collapse of carrying capacity (F) is 8.49>3.0, and the global safety factor value is 1.56>1.5. The value of the safety factor for shifting and rolling has decreased by 1% and 20% respectively compared to the gravitational wall. In the wall bearing capacity, there was an increase of 31%. Changes that occur in the safety factor in cantilevered walls are caused by changing factors in the dimensions of the walls which affect the strength of the structure in the soil holding force and the type of working principle of the walls. As for the global slope stability analyzed, there was a decrease in the safety factor by 5% after changing the type of reinforcement, but it showed that the slope was still stable, because the cantilevered wall type has a slender front wall dimension compared to the gravity wall which is more resistant to the risk of lateral slope movement.
MIKRO ZONASI RESPON SPEKTRUM GEMPA DI KABUPATEN GORONTALO UTARA UNTUK KEBUTUHAN DESAIN BANGUNAN TAHAN GEMPA Aldo, Rivaldo Inaku; Achmad, Fadly; Patuti, Indriati Martha
Composite Journal Vol. 2 No. 2 (2022): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/cj.v2i2.51

Abstract

The issuance of SNI 1726:2019 regarding the response of the earthquake spectrum in Indonesia has not accommodated districts and sub-districts. The distribution of values on the zoning map for Indonesia is only divided by province, including Gorontalo. Gorontalo province is included in the high-risk zone because its soil motion parameter Ss is maroon with a value of 1.2–1.5g, while the ground motion S1 parameter is light brown with a constant acceleration spectrum of 60% g, Thus, it is necessary to divide the micro-scale map of the earthquake response spectrum zonation. This research aimed to analyze the value of the earthquake spectrum created with a zoning micro map in Gorontalo Utara District. This research is expected to be an initial reference in planning for the earthquake-resilient building, particularly in Gorontalo Utara District. The object of research is located in Gorontalo Utara District. This research only used secondary data obtained from several agencies, namely, BPJN Gorontalo and drilling service companies in Gorontalo Province. The secondary data used is the result of SPT (Standard Penetration Test) driling. Preparation of spectrum responses and zonation micro map referred to the guidelines of SNI 1726:2019 and the QGIS learning module. The data analyzed are based on the N-SPT data, which previously had been processed. The data obtained were processed to obtain the value that became the goal of this research by correcting the N-SPT (Standard Penetration Test) data, making the earthquake response spectrum plan, and making the response spectrum using QGIS 3.16. Gorontalo Utara District is classified as a soft-to-moderate site with an value of 9-37. The short period bedrock acceleration value SS is 1.49-2.33g. When viewed by color, Gorontalo Utara District is including in maroon to purple. The value of 1 second bedrock acceleration period S1 is 0.6-0.78. When viewed by color, it is including whitish orange to pink. The peak ground acceleration value PGA is 1.49-2.33g which, by color, is included in yellowish orange to red. The value of bedrock acceleration for a period of 1 second and the highest peak ground acceleration value occurred in Ilangata Village with SS values ​​of 2.12-2.33g, S1 0.74-0.78g and PGA values ​​0.79-0.85g. Meanwhile, the lowest value occurred in Deme 2 Village with an SS value of 1.49g, S1 0.6g and a PGA value of 0.6g. It shows that the higher the acceleration value, the greater the earthquake that occurs, and vice versa. Based on the results of this study, the acceleration value affects the estimation of the earthquake that occurs, or the acceleration is directly proportional to the force.
Model Sumur Resapan dan Drainase Untuk Penanggulangan Banjir Dengan Memanfaatkan Material Lokal Kadir, Yuliyanti; Patuti, Indriati Martha; Desei, Frice L.
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 1 No 2 (2017): Agustus
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v1i2.835

Abstract

Flooding is a disaster that often occurs in the rainy season. The damage caused by this failure is not only material damage such as damage to houses, public facilities, and destruction of agricultural land, but also create disease outbreaks around the disaster site. One solution to reduce rainwater runoff needs to be made easy and practical recharge well model by utilizing local materials. The purpose of this research is the modeling of absorbing wells and drainage for prevention and control of flood hazard to achieve a healthy, safe, and comfortable. The research location is Lauwonu Village, Tilango District, Gorontalo Regency. Construction materials for modeling are local materials located around the site. The recharge wells are sized (2x1x1) m3 and (2x1,5x1) m3. If every household has a recharge well with a minimum volume of 2 m3, it will reduce rainfall runoff so that that flood disaster can be avoided.
Co-Authors abdul Djou Aldo, Rivaldo Inaku Andi Indra Wulan Sari Ramadani Aryati Alitu Balu, Rasyid Desei, Frice Dewa Gede Eka Setiawan Eka Liani, Annisa Fadlan R Dua Fadly Achmad Fitryane Lihawa Frice L. Desei, Frice L. Gafur, Nurfitri Abdul HASAN, ELFIRAWATI Ishak Isa Jahja, Mohamad Kurniasari, Septiana Marike Mahmud Masrurah, Zakia Meidji, Icha Untari Meilan Demulawa Muhammad Yunus Muhammad Zulkifli, Muhammad Nurfaika Nurfaika Rahim, Niarti Rahmani Kadarningsih Ria Defriyanti Ali Rifadli Bahsuan Siti Zulaikah Supu, Idawati Supu, Idawaty Tang, Bunga Tisen, Tisen Yuliyanti Kadir