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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Pengembangan Teknologi Informasi dan Ilmu Komputer Sarwahita : Jurnal Pengabdian Kepada Masyarakat Jurnal Pendidikan Teknik Bangunan International Journal of Advanced Science Computing and Engineering Journal of Innovative and Creativity
Tiara Mahardika
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Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Mathematics Social Sciences Transportation Other

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Variasi Lebar Pelat Terhadap Daya Dukung Aksial Tarik Fondasi Tiang Helikal Di Tanah Gambut Tiara Mahardika; Ferry Fatnanta; Syawal Satibi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Helical piles is one of the alternative to replace wood pile at a construction over peat soil. Determination of uplift capacity from field test in this research will be interpreted by intersection of tangent method. Uplift capacity of helical pile theoritically calculated using two approches design with individual plate bearing method and cylindrical shear method. This study compared helical pile used diameter 35 cm, 25 cm and 15 cm with variations, wood pile, and pile without helix. The result of the study confirmed that uplift capacity will be increasing with the increment of helix plate diameter and the number of helix. Based on the interpretation data from field test, the capacity of helical pile is closer calculation cylindrical shear method than individual plate bearing method which means uplift capacity of helical pile is derived from shear resistance along cylindrical failure surface and bearing resistance above the top or bottom helix. And other result confirmed that helical pile has the greater uplift capacity than wood pile or pile without helix.Keywords: Helical pile, wood pile, pile without helix, peat soil, helix plate diameter, uplift capacity
Pengembangan Sistem Klasifikasi Air Layak Minum berdasarkan Nilai pH dan Kekeruhan menggunakan Metode K-Nearest Neighbors (K-NN) berbasis Arduino Uno Mahardika, Tiara; Prasetio, Barlian Henryranu
Jurnal Pengembangan Teknologi Informasi dan Ilmu Komputer Vol 7 No 6 (2023): Juni 2023
Publisher : Fakultas Ilmu Komputer (FILKOM), Universitas Brawijaya

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Abstract

Tubuh manusia bergantung pada air sebagai sumber daya alam utama kedua setelah oksigen untuk kelangsungan hidup. Namun, limbah tinja mengkontaminasi sebagian besar air minum rumah tangga di Indonesia, menyebabkan penyakit diare, penyebab utama kematian bayi. Akibatnya, sangat penting untuk melakukan penelitian dan pengembangan alat untuk membantu masyarakat dalam menilai keamanan air yang akan dikonsumsi. Penulis bertujuan untuk membuat sistem klasifikasi kualitas air minum yang memberi tahu pengguna tentang pH dan kekeruhan air untuk mengatasi masalah ini. Sensor pH-4502C dan sensor turbidity SEN0189 digunakan dalam sistem klasifikasi ini. Mereka disambungkan ke mikrokontroler Arduino UNO dan ditampilkan pada layar LCD 16x2. Hasil dari kedua sensor tersebut diklasifikasikan dengan metode K-Nearest Neighbour. Sensor dan metode yang digunakan telah diuji. Pengujian sensor pH-4502C menunjukkan akurasi 93%. Pengujian sensor turbidity SEN0189 juga menunjukkan bahwa sensor tersebut dapat mendeteksi tingkat kekeruhan air dengan baik. Nilai tegangan sensor menunjukkan air yang lebih jernih (air minum) dan air yang lebih keruh (air kopi). Untuk total lima belas data uji dan tiga puluh data latih, pengujian metode K-Nearest Neighbor mencapai tingkat akurasi 100%. Data tentang air minum umum digunakan dalam penelitian ini. Oleh karena itu, sistem klasifikasi kualitas air minum ini membantu memantau kualitas air minum dan memberikan informasi penting bagi pengguna.
Analysis of Pile Foundation Bearing Capacity and Soil Classification in Padang City Liliwarti; Silvianengsih; Mahardika, Tiara; M, Bagaskoro; Abddilah, Farizi
International Journal of Advanced Science Computing and Engineering Vol. 6 No. 3 (2024)
Publisher : SOTVI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62527/ijasce.6.3.220

Abstract

Padang City, west of Sumatra, is highly vulnerable to natural disasters such as earthquakes, landslides, and floods. The soil conditions in this area, consisting of tuff, silica, and rocks with low cohesion, pose challenges due to their weak bearing capacity, increasing the risk of ground movement or subsidence. This study analyzes the bearing capacity of pile foundations and soil classification in the Sungai Sapih area using the Cone Penetration Test (CPT) method and soil classification based on the Bagemann method. Investigations were conducted at five sounding points (S1–S5) in Sungai Sapih to understand the soil characteristics and provide optimal foundation planning recommendations. The results of this study indicate that the soil layers are dominated by clay, with variations such as organic clay, very stiff clay, and clay loam, all of which tend to have low end-bearing capacity. At depths of up to 11 meters, the cone resistance (qc) values were very low at all points, indicating that the pile foundation cannot rely on end-bearing support at this depth. However, increased friction along the pile shaft significantly contributes to the ultimate bearing capacity of the pile foundation. Hard soil layers were identified at depths of 12–16 meters, with qc values of approximately 150 kg/cm², providing a reference for deep foundation design. Based on the result of this study, the use of piles foundation and bored piles is recommended to reach the hard soil layers to ensure structural stability. Additionally, an analysis of soil settlement is necessary due to the high potential for deformation in the clay layers. This study is expected to serve as a guideline for safe and sustainable foundation planning in the Sungai Sapih area, rapidly developing as a center for government and public facilities in Padang City.
Pembuatan Foto Udara untuk Mendukung Digitalisasi Nagari Sikucua Barat Kabupaten Padang Pariaman Stiyanto, Eri; Falah, Muhammad Fajrul; Mahardika, Tiara; Prices, Afrizal Putra; Trinanda, Yuda
Bahasa Indonesia Vol 22 No 01 (2025): Sarwahita : Jurnal Pengabdian Kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/sarwahita.221.8

Abstract

Legal certainty over nagari administrative areas is a crucial element in the nagari governance system. A base map in the form of imagery is needed to streamline the process of confirming and determining boundaries between bordering nagari. Drone technology is an effective solution in taking aerial photographs that can be used as a base image for drawing administrative boundaries. Nagari Sikucua Barat, located in Padang Pariaman Regency, currently does not have a clear legal basis for its administrative boundaries. This service activity aims to provide accurate and up-to-date base imagery to support the drawing of administrative boundaries legally and technically. In addition, this activity also increases the capacity of the village government in utilizing geospatial technology in order to systematically manage regional information. The result of this activity is the availability of the latest aerial imagery up to December 2024, replacing the previous High Resolution Upright Imagery (CTRT) which only includes data up to 2018. The impact of this activity includes increasing the efficiency of nagari administration, integrating assets and resources into a spatial data-based information system, and strengthening the legal basis of territorial boundaries. The service assistance will continue until the nagari has an interactive, integrated, and user-friendly information system to support data-based decision-making more accurately and transparently.   Abstrak Kepastian hukum terhadap wilayah administrasi nagari merupakan elemen krusial dalam sistem pemerintahan nagari. Peta dasar berupa citra sangat diperlukan untuk mengefisiensi proses penegasan dan penetapan batas antar nagari sempadan. Teknologi drone menjadi solusi efektif dalam pengambilan foto udara yang dapat digunakan sebagai citra dasar untuk penarikan garis batas wilayah administrasi. Nagari Sikucua Barat, yang terletak di Kabupaten Padang Pariaman, hingga saat ini belum memiliki dasar hukum yang jelas terkait batas wilayah administrasinya. Kegiatan pengabdian ini bertujuan menyediakan citra dasar yang akurat dan mutakhir guna mendukung penarikan garis batas wilayah administrasi secara legal dan teknis. Selain itu, kegiatan ini juga meningkatkan kapasitas pemerintah nagari dalam pemanfaatan teknologi geospasial agar dapat mengelola informasi wilayah secara sistematis. Hasil kegiatan ini adalah tersedianya citra udara terbaru hingga Desember 2024, menggantikan Citra Tegak Resolusi Tinggi (CTRT) sebelumnya yang hanya mencakup data hingga tahun 2018. Dampak kegiatan ini meliputi peningkatan efisiensi administrasi nagari, integrasi aset dan sumber daya ke dalam sistem informasi berbasis data spasial, serta penguatan dasar hukum batas wilayah. Pendampingan pengabdian akan berlanjut hingga nagari memiliki sistem informasi yang interaktif, terintegrasi, dan ramah pengguna guna mendukung pengambilan keputusan berbasis data secara lebih akurat dan transparan.
Analysis of the Stability of Retaining Walls Using FEM and LEM on the Dumai Duri Kandis Road Mahardika, Tiara
Jurnal Pendidikan Teknik Bangunan Vol 5, No 1 (2025): Jurnal Pendidikan Teknik Bangunan
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jptb.v5i1.87063

Abstract

This research aims to analyze and compare the stability of retaining walls using two analytical approaches, namely the Finite Element Method (FEM) and the Limit Equilibrium Method (LEM), on the landslide-prone section of the Dumai Duri Kandis Road. The research was conducted using an exploratory method through field observations, collection of primary and secondary data, and numerical simulations. The research population consists of geotechnical structures in landslide areas, with samples taken from drilling points up to 24 meters deep as the location for soil analysis. The research instruments include a drilling machine, SPT (Standard Penetration Test), and Plaxis 2D and Slide 2 software for FEM and LEM simulations. Primary data were obtained from field soil stratification tests, while secondary data included earthquake maps, plan drawings, and bored pile specifications. Based on soil classification, the location falls within soft soil with an earthquake acceleration of 0.1088g. The analysis results show that the application of bored piles significantly increases the safety factor (SF) value. In conditions without bored piles, the average SF ranges from 1.02 to 1.27, whereas with bored piles, it increases to more than 2.1, depending on the water table conditions and loading. In conclusion, the FEM and LEM methods show that the use of bored piles can increase slope stability by more than 135% compared to without reinforcement. These findings recommend the use of bored piles as an effective reinforcement strategy for road sections with a high potential for landslides.
Cliff Stability Analysis Of Batang Lembang River In Solok Regency Using Geostudio Arlis, Angga Putra; Mahardika, Tiara; Stiyanto, Eri; Wiliya, Wiliya; Araska, Wahyu
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.3771

Abstract

Penelitian ini bertujuan untuk mengevaluasi stabilitas tebing sungai dalam rangka proyek pembangunan sarana dan prasarana pengendalian banjir Batang Lembang (Tahap II) yang berlokasi di Solok, Sumatera Barat. Proyek ini mencakup tiga lokasi utama, yaitu Selayo di Kabupaten Solok (BH01), VI Suku di Kota Solok (BH02), dan KTK di Kota Solok (BH03). Analisis stabilitas lereng dilakukan menggunakan metode slope/w dan faktor keamanan yang mengacu pada SNI 8640-2017 mengenai "Persyaratan Perancangan Geoteknik". Berdasarkan hasil analisis, faktor keamanan pada beberapa kondisi di lokasi Selayo dan VI Suku tidak memenuhi standar minimum yang ditetapkan, sementara di lokasi KTK, faktor keamanan menunjukkan hasil yang sesuai dengan persyaratan. Penelitian ini juga mengusulkan modifikasi terhadap geometri lereng dan penambahan elemen perkuatan, seperti cerucuk dolken, untuk meningkatkan stabilitas tebing di lokasi yang tidak memenuhi syarat. Selain itu, evaluasi dilakukan terhadap potensi modifikasi penampang sungai untuk memperbaiki kestabilan lereng, dengan fokus pada perubahan geometri dan penambahan elemen perkuatan. Hasil analisis menunjukkan bahwa dengan penerapan modifikasi tersebut, beberapa lokasi yang sebelumnya tidak memenuhi standar faktor keamanan dapat diperbaiki, sehingga sesuai dengan ketentuan geoteknik yang berlaku. Temuan dari penelitian ini memberikan rekomendasi teknis untuk meningkatkan stabilitas tebing sungai, yang diharapkan dapat memberikan kontribusi penting terhadap kelancaran pembangunan sarana dan prasarana pengendalian banjir yang aman dan berkelanjutan di kawasan Batang Lembang. Penelitian ini juga menawarkan wawasan mengenai penerapan standar geoteknik terbaru dan menekankan pentingnya analisis kondisi lokal dalam merancang solusi mitigasi bencana banjir yang efektif. Selain itu, hasil penelitian ini dapat menjadi acuan bagi perencanaan pembangunan serupa di wilayah lain dengan karakteristik yang serupa.
Co-Authors Abddilah, Farizi Araska, Wahyu Arlis, Angga Putra Barlian Henryranu Prasetio Eri Stiyanto Falah, Muhammad Fajrul Ferry Fatnanta Liliwarti M, Bagaskoro Prices, Afrizal Putra Silvianengsih Stiyanto, Eri Syamsul Arifin Trinanda, Yuda Wiliya, Wiliya