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Ferry Fatnanta
Universitas Riau
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation Other

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Analisis Likuefaksi Berdasarkan Data CPT Untuk Perancangan Pondasi Di Pesisir Pantai Kabupaten Kulon Progo DIY Anggara, Vebrian; Fatnanta, Ferry; Yusa, Muhamad
Jurnal Rekayasa Sipil (JRS-Unand) Vol. 16 No. 2 (2020)
Publisher : Civil Engineering Departement, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrs.16.2.77-90.2020

Abstract

Yogyakarta Special Region (DIY) is an area that has a high level of seismic activity in Indonesia. This is due to various local faults near the land and its location adjacent to the subduction of the Indo-Australian and Eurasian plates. The proposed new airport is located on the coast in Kulon Progo Regency DIY. The location is dominated by the sands layer and it has high ground water levels which indicate the high potential of liquefaction. The site classes of the coast in Kulon Progo Regency is medium category (SD). Liquefaction analysis using the PGAM value of 0.4 g. Liquefaction has the potential to occur in soil layers 0 - 6 meters. The analysis shows for eartquake of ≥ 6.3 Mw has a very high category of liquefaction. The analysis results has LPI ≥ 29.30 for ground water conditions at the surface, and LPI ≥ 15.32 for ground water conditions in depths of 3 meters. Estimated soil settlements of 19.7 cm for magnitude of 8.1 Mw with ground water conditions at the surface. The use of shallow foundations at soil depths of 0-6 meters is not recommended, unless a soil improvement method is used to eliminate the potential for liquefaction.
Perubahan Nilai Kuat Tekan Lempung Lunak Distabilisasi Dengan Kapur dan Limbah Pembakaran Batubara Zulnasari, Azra; Nugroho, Soewignjo Agus; Fatnanta, Ferry
Jurnal Rekayasa Sipil (JRS-Unand) Vol. 17 No. 1 (2021)
Publisher : Civil Engineering Departement, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrs.17.1.24-36.2021

Abstract

Suatu bangunan infrastruktur yang akan dibangun terkait langsung dengan aspek yang paling penting yaitu tanah pendukung, karena berfungsi sebagai menerima dan menahan beban struktural diatasnya. Dalam kenyataannya, tidak semua tanah mempunyai perilaku fisik dan mekanis yang baik, salah satu contohnya ditandai dengan kadar air yang tinggi serta kuat tekan maupun daya dukung tanah yang rendah. Untuk mengevaluasi kemungkinan terjadinya kondisi tersebut maka dilakukan stabilisasi terhadap tanah agar memenuhi persyaratan teknis yang diperlukan. Stabilisasi tanah yang akan ditelaah yaitu perbaikan tanah lempung dengan dicampur zat aditive yaitu kapur, abu terbang serta abu dasar. Kapur dan geopolimer abu batubara, yaitu abu terbang abu dasar, sudah banyak digunakan untuk meningkatkan kuat geser dan daya dukung tanah. Tujuan penelitian adalah mengamati perilaku tanah lempung dengan kembang susut tinggi yang distabilisasi dengan kapur, abu terbang dan abu dasar. Perilaku yang diamati adalah peningkatan kekuatan tanah dengan pengujian laboratorium, yaitu nilai kuat tekan bebas Tanah. Pada penelitian ini pengujian kuat tekan dilakukan dengan 6 perlakuan yaitu:  tanpa pemeraman dan tanpa perendaman; tanpa pemeraman dengan perendaman; pemeraman 7 hari dengan tanpa perendaman; pemeraman 7 hari dan perendaman; pemeraman 28 hari dan  tanpa perendaman, serta pemeraman 28 hari dan perendaman. Hasil penelitian menunjukkan bahwa nilai kuat tekan tersebut akan semakin meningkat seiring dengan lamanya waktu pemeraman. Begitu juga dengan semakin bertambahnya persentase zat aditif maka nilai kuat tekan juga cenderung semakin meningkat. Sedangkan dengan perlakuan pemeraman terhadap sampel mengakibatkan penurunan nilai kuat tekan. Nilai kuat tekan tertinggi berada pada Variasi VI sebesar 1506,158 kPa pada kondisi pemeraman 28 hari dan tanpa perendaman dimana persentase bahan tambah yang terkandung yaitu 25% abu terbang, 15% abu dasar dan 5% kapur. Sedangkan nilai Kuat Tekan Bebas terendah pada Variasi III sebesar 120,442 kPa pada kondisi tanpa pemeraman dan perendaman dengan persentase bahan tambah yang terkandung yaitu 10% abu terbang, 15% abu dasar dan 5% kapur.
Permeability Prediction for Expansive Soil Based on Physical Properties Using Artificial Neural Networks Fatnanta, Ferry; Suprayogi, Imam; Ranata, Nicola Rabb; Nugroho, Soewignjo Agus; Putra, Agus Ika
Makara Journal of Technology Vol. 27, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Permeability is a soil parameter related to the construction industry to understand the processes of infiltration, runoff, and settlement. The risk of testing errors is inevitable in permeability investigations, especially in expansive soils. Trial and error in permeability testing becomes difficult due to soils with small pore sizes and large shrinkage expansion. Several studies related to soil physical properties that affect permeability have been conducted. However, the correlation results obtained still have poor accuracy. Artificial neural networks (ANN) are machine learning systems that can change their structure to solve problems that are included in the system. The use of ANNs in data learning is applied to help the established model predict future output values with a small error value. This research aims to study the correlation between the physical properties of expansive soil that affect its permeability using ANN correlation and then produce correlation equations for future inputs. The research was conducted with input data in the form of soil liquid limit, soil plasticity index (IP), %fine grains, and soil permeability as output data. Results demonstrated a good correlation between soil physical properties and permeability, revealing high accuracy in the output regression equation.
Correlation of CBR Values and Mackintosh Probe on Clay Soil with Variations of Bentonite, Kaolin and Sand Nugroho, Soewignjo Agus; Fatnanta, Ferry; Wibisono, Gunawan; Muliyono
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24252

Abstract

Coastal areas are typically characterized by non-uniform soil properties, often featuring soft, water-saturated soils with high plasticity, which frequently results in low soil bearing capacity. This study aims to investigate the relationship between California Bearing Ratio (CBR) values and Mackintosh Probe (MP) test results by utilizing a mixture of clay soil comprising bentonite and kaolin with sand in various compositions. These mixtures were prepared as laboratory test samples to simulate the soil conditions in these areas. The primary objective of this research is to develop a faster and more efficient alternative method for estimating soil bearing capacity in coastal regions. A total of 81 samples were prepared with variations in moisture content, compaction levels, and the composition of sand and clay mixtures. Testing was conducted using both CBR and MP methods. The analysis revealed a significant positive correlation between MP and CBR values, represented by the linear regression model: CBR = 0.7498 * MP, with a coefficient of determination (R²) of 0.9542. This indicates that approximately 95.42% of the variation in CBR values can be predicted from the MP test results. The model's accuracy was further validated through training and testing using 5 randomly selected data points from the sample set. The findings suggest that the Mackintosh Probe can serve as a preliminary tool for estimating soil bearing capacity in coastal areas, particularly in field conditions where laboratory equipment is limited. However, for broader applicability, further validation of this model is necessary to accommodate more complex soil conditions in the field.
Numerical Analysis of The Effect of Creep on The Settlement and Failure Pattern of Helical Piles Foundations Satibi, Syawal; Fatnanta, Ferry; Aprillia. H.R., Bella
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19152

Abstract

Peat soil is a unique type of soft soil that has a low bearing capacity and experiences significant creep effect. This inherent challenge necessitates effective improvement methods to enhance its stability, among which helical pile foundations stand out as a viable solution. Despite their promising application, the nuances of how creep influences the performance of these helical piles in peat soil remain largely unexplored. This study aims to analyse the effect of creep on the settlement and failure pattern of helical pile foundations in peat soils. Axis-symmetric two-dimensional numerical analyses using the finite element method were carried out to model helical piles foundations with varying creep indices (Cα) and differing spacings between the helical plates (1D and 3,5D). The results showed that the effect of creep caused the settlement of helical piles to increase as the value of Cα increases. However, the changes of excess pore water pressure around the helical pile foundation were not significantly affected by the variation of Cα value. In addition, the failure patterns of helical piles foundations were not affected by the creep effect, with the failure mechanism still following the cylindrical shear pattern for the 1D inter-plate spacing and the individual bearing pattern for the 3,5D inter-plate spacing. This study provides insight into the importance of considering the effect of creep in the design of helical piles foundations in peat soils for long term use.
PENGEMBANGAN RUMUS KORELASI CLEGG IMPACT VALUE DAN NILAI CALIFORNIA BEARING RATIO PADA TANAH KELANAUAN UNTUK TIMBUNAN Frengki Ashari Aritonang; Muhamad Yusa; Ferry Fatnanta
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.6147

Abstract

In embankment construction, material selection is critical and must meet technical requirements to ensure quality and safety. The California Bearing Ratio (CBR) value is commonly used to determine the soil bearing capacity in supporting loads applied above it. However, field CBR testing is relatively time-consuming, especially for large- scale projects. Therefore, a faster yet accurate alternative testing method is needed. One such alternative is the use of the Clegg Impact Hammer (CIH). This study aims to analyze and develop a correlation formula between the Clegg Impact Value (CIV) and field CBR values, using the Dynamic Cone Penetrometer (DCP) on ML (silt) and MH (elastic silt) soils for embankment construction. The research was conducted in Pomalaa, Southeast Sulawesi through field testing and laboratory testing (soil physical properties). Field tests included DCP and CIH, while laboratory tests covered moisture content and Atterberg limits. The results showed that the silty soils had a moisture content ranging 13.11%-46.95%, liquid limit 32.65%-90.09%, plastic limit 26.62%-59.26%, and plasticity index 5.53%- 33.63%. Field testing (DCP and CIH) showed the best correlation in MH soil at a depth of 20 cm, with an R² value of 0.6979. The resulting correlation formula is %CBR= 0.5896(CIV)1.02. With a correlation coefficient categorized as “strong,” this correlation has the potential to be used as a rapid method for determining CBR values in the field.
EVALUASI KAPASITAS DAYA DUKUNG AKSIAL DAN LATERAL HELICAL PILE MENGGUNAKAN METODE EMPISRIS DAN ANALISIS BATAS TERADAP HASIL PENGUJIAN AKSIAL DAN LATERAL DI LAPANGAN Farian Albajili; Muhamad Yusa; Ferry Fatnanta
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6744

Abstract

The construction of deep foundations in operational industrial facilities faces challenges due to the presence of existing buildings and active machinery. Helical piles offer a stable, environmentally friendly, and vibration-free solution that is safe for surrounding structures. This study compares the results of empirical methods and limit analysis in the design of helical piles with field test results of axial loads. The research began with the collection and correction of Standard Penetration Test (SPT) data to a depth of 15 m to determine soil technical parameters. Based on these data, helical pile models with various design configurations were analyzed using empirical methods, limit analysis, and field testing. The results indicate that limit analysis provides axial load capacities that are closer to field test results compared to other empirical methods. The highest capacity was obtained for pile type D1-H1-S1-M piles, which have larger helix and shaft diameters, while differences in test locations meant that pile type D2-H2-S3-SH piles could not be directly compared to the others
TER TINJAUAN TEKNIS DAN EKONOMIS PENANGANAN PERSIMPANGAN JALAN (STUDI KASUS JL. KAHARUDIN NASUTION – JL. PASIR PUTIH KOTA PEKANBARU) Rafli Arie Pradhana; Ari Sandhyavitri; Muhammad Ikhsan; Leo Sentosa; Muhamad Yusa; Ferry Fatnanta
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6972

Abstract

Pekanbaru City, as the provincial capital, has experienced significant population growth, resulting in increased mobility and severe traffic congestion, particularly at urban intersections. This study evaluates the performance and feasibility of management alternatives for the problematic Kaharudin Nasution-Pasir Putih intersection. The analysis uses the Indonesian Road Capacity Guidelines (PKJI 2023) for technical performance assessment and the LAPI ITB 1996 method for economic analysis, focusing on Vehicle Operating Costs (VOC), Benefit Cost Ratio (BCR), and Net Present Value (NPV) for the short (5 years), medium (10 years), and long (15 years) terms. The existing condition indicates a poor Level of Service (LOS D) with a Degree of Saturation (DS) of 0.76. Four alternatives were evaluated: Traffic Light Optimization, Road Widening, Adding 1 Lane, and Construction of an Overpass. The results indicate that Alternatives 1, 2, and 3 offer only short- to medium-term improvements. The construction of the Flyover (Alternative 4) is the only feasible long-term solution (15 years), proven to be economically feasible with BCR and NPV values of 1.46 and 55.6 billion rupiah, in the 10th year 3.19 and 270.3 billion rupiah, and in the 15th year 4.79 and 482.3 billion rupiah. which means the benefit value is greater than the costs incurred, so that the construction of the flyover is economically feasible to be implemented to minimize the increasing financial losses due to traffic delays.
EVALUASI KAPASITAS SISI UDARA BERBASIS RUNWAY OCCUPANCY TIME PADA BANDAR UDARA SULTAN SYARIF KASIM II PEKANBARU Michael Exaudi Siregar; Leo Sentosa; Muhamad Yusa; Ari Sandhyavitri; Gunawan Wibisono; Ferry Fatnanta
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.8194

Abstract

Sultan Syarif Kasim II Airport serves as the main gateway to Pekanbaru City and is planned as a primary hub airport. This study evaluates the existing airside capacity, runway–taxiway limiting factors, traffic forecast, and capacity improvement alternatives. The analysis used airside geometry data, field operational observations, annual aircraft movements, and socioeconomic data. The results show that traffic is dominated by narrow-body jets; therefore, the capacity limitation is mainly affected by the inefficient runway–taxiway configuration, which increases runway occupancy time. The existing mixed-operation capacity is 15 movements/hour, equivalent to 43,800 regular movements/year. The proposed development alternatives can increase the capacity to 30 movements/hour, equivalent to 125,925 regular movements/year.
Sifat Fisik Tanah Berpengaruh Terhadap Kuat Geser Tanah Wilayah Pesisir Menggunakan ANFIS Ewis Oktareza; Ferry Fatnanta; Imam Suprayogi
Journal of Infrastructure and Civil Engineering Vol. 6 No. 1 (2026)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v6i1.160

Abstract

Tanah pesisir didominasi lempung marin dan tanah organik tinggi dengan kuat geser rendah, kompresibilitas tinggi, dan sensitif terhadap kadar air serta salinitas, sehingga meningkatkan risiko kegagalan infrastruktur. Penelitian ini mengevaluasi kinerja metode soft computing, Adaptive Neuro-Fuzzy Inference System (ANFIS), dalam memprediksi kuat geser tak terdrainase (Cu) serta menentukan parameter sifat fisik tanah paling dominan. Data terdiri dari 190 tanah pesisir, meliputi kadar air, berat isi, berat jenis, Atterberg limit, dan liquidity index. ANFIS diterapkan menggabungkan jaringan saraf dan logika fuzzy untuk menangkap hubungan nonlinier dan ketidakpastian data. Hasil menunjukkan ANFIS memiliki performa terbaik (R All = 0,8443; RMSE = 0,1673). Analisis ANFIS dengan performa terbaik mengidentifikasi Plastic Limit (PL) dan Specific Gravity (Gs) sebagai faktor utama yang mempengaruhi kuat geser (Cu). Penelitian ini menunjukkan bahwa komposisi mineral dan densitas partikel tanah di wilayah pesisir berdampak signifikan pada kuat geser tanah, serta efektivitas ANFIS dapat dijadikan alat prediksi awal untuk perencanaan geoteknik dan mitigasi risiko infrastruktur pesisir.
Co-Authors ', Muhardi . Zulfan Abdul Halim Muqorrobin Abdullah Ihsan Alkubuwi Achmad Noerkhaerin Putra Adi, Sapria Adi, Sapria Adnan Ruziq Ihsan Agus Ika Putra Agus Nugroho, Soewignjo Aisyah Putri Al Ridho, Muhammad Faisal Albajili, Farian Alfian Alfian Alfian Malik Alridho, Muhammad Faizal Andius Dasa Putra Anggara, Vebrian Aprillia. H.R., Bella Aras Mulyadi Ari Sandhyavitri Arief Rahman Arifan Farhan Ariza, Ariza Azizah . Azra Zulnasari Bramson P Manik, Bramson P Charles AN Daniel Irfan Dede Subhan Dodi Pratama Dodi Pratama Doris Ade Widyarti Effendi Sianipar Ela Fitriana Endala Siboro Epi Mili Yanti Erwin Satria Anugrah Ewis Oktareza Fachry Abda El Rahman Fadel Muhammad Fadhilah, Randy Fadhlurrahman, Fadhlurrahman Fadlan Fadlan Fajrian Saddek Farian Albajili Fauzan Hidayattullah Fauzi, Manyuk FERI SETIAWAN Fikri Ananda Fikri Hidayat Frengki Ashari Aritonang Frimadofi Frimadofi Galang Maulana Gina Purnama Sari Giri Prayoga Gunawan Wibisono Gunawan Wibisono Gunawan Wibisono Gussyafri Gustika, Rani Ardeylina Hadiyan Putra, Hadiyan Haryo Dwito Armono Hasibuan, Putra S Hengki Tornando Herli Fajri Himmatul Azizah HR, Bella Aprilia Ihsan, Adnan Ruziq Imam Hanafi Imam Suprayogi Irfan Hasan Iskandar Romey Sitompul Joshua, Norman Julperizal Julperizal Khairatu Zaro Laksono Trisnantoro Lembasi, Muhammad Khadafi Leo Sentosa Lingga Panji Subrata, Lingga Panji Lisa Trisnawati Lubis, Shakila Fuadah M Faizal Alridho M. Yusa Maulidi, M Aldi Michael Exaudi Siregar Monita Olivia Mufriadi Mufriadi Muhamad Yusa Muhammad Ikhsan Muhammad Ikhsan Muhammad Khadafi Lembasi Muhammad Naufal Muhammad Rico Saputra Muhammad Safrianda Muhammad Yevizal Muhammad Yusa Muhardi Muhardi Muhardi Mukhelnalis Sutazril Muliyono Nova, Septi Devita Novan, Andre Ongko, Andarsin Prayogo, Giri Rafika Rani Zainuddin Rafli Arie Pradhana Rahman, Sayful Ralan Ditra Ranata, Nicola Rabb Remon Muslim Riady, Azhar Rinaldi Rinaldi Rinaldi Rinaldi Rio Hidayat Rio Zambika Rizqi Yuliana Rizqy Ridho Prakasa Robi Handi Putra Ronny Tigor Sitanggang S A Nugroho Said Defri Ariandi Saputra, Adetia Saputra, Riola Satibi, Syawal Satria, Zoni Sayoga, Davin Simanjuntak, Lambok Jadiaman Soewignjo Agus Nugroho Soewignjo Agus Nugroho Soewignjo Agus Nugroho Sofyan Subhan, Dede Suhaimi Siregar Suratman Suratman Suryadi Ramadhan Sutikno, Sigit Syamsul Arifin Tiara Mahardika Tornando, Hengki Trimaijon Trimaijon Trimaijon, Trimaijon Unzi Marwan Usman Muhammad Tang Usman, Fauzan Vebrian Anggara Wahyudi Citrosiswoyo Wahyudi Citrosiswoyo Wahyudi Citrosiswoyo Widi Agoes Pratikto Widi Pratikto Widi Pratikto, Widi Wulan Sri Rahayu Wulandari, Deny Yolanda Widyan Yoyon Kurniawan Yusa, M. Yusa, Muhammad Zoni Satria Zulnasari, Azra