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Ferry Fatnanta
Universitas Riau
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Stabilisasi Tanah Lempung Organik Menggunakan Semen Dan Difa Soil Stabilizer Abdul Halim Muqorrobin; Muhamad Yusa; Ferry Fatnanta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The bearing capacity of clay soils will decrease by the presence of organic materials in that clay soils. Therefore, the usage of additives such as cement and DIFA SS can be an option to improve the strength of this kind of soil. This research aims to analyze the effects of organic content (varying from 3, 6, 9, and 12% by dry weight) to the CBR values of clay, and to analyze the increase of its strength after stabilized using cement and DIFA SS (5% and 1% by dry weight). The organic clay samples were reconstituted in the laboratory by mixing clay and peat soils. CBR tests were conducted after 0, 7, and 14 days of curing period, and after 4 days for soaked specimens. The results indicate that CBR values of mixing clay decreased significantly from 16,89% to 10,39% due to the addition of 3% organic content. After 14 days, the CBR values of cement-stabilized clay resulted in an increase to 141,04% while the CBR values of clay soils with the addition of cement and DIFA SS improved to 97,17%. Furthermore, the higher the quantity of organic content added to the soils, the lower the CBR values of the stabilized soils. From these results, it is concluded that organic content strongly affects the effectiveness of cement and DIFA SS treatment of the soils. Keywords: CBR, Cement, Clay, DIFA SS, Organic Content, Soil Stabilization
Stabilisasi Tanah Cl-Ml Menggunakan Semen Dan Difa Soil Stabilizer Endala Siboro; Muhamad Yusa; Ferry Fatnanta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

CL-ML (clay with low plasticity, silt with low plasticity) soil is a type of soil with inconsistent property and low bearing capacity caused by changes in water content. Soil stabilization is required to fix its problematic properties. One of the possible method to fix the soil chemically is soil stabilization with cement and DIFA soil stabilizer as additives. DIFA soil stabilizer is a type of addictive ingredient used in soil stabilization and to solidify and stabilize soil physically and chemically. This study aims to analyze the effective content of cement and DIFA soil stabilizer in increasing the compressive strength of the soil and comparing it with the compressive strength of cement-free soil. Cement content variations used were 3% and 5% from the dry weight of the soil and DIFA soil stabilizer content variations used were 0.6%, 0.8%, and 1% from dry weight of the soil. Shear strength tests were done after 0, 7, and 14 days of submersion. The result of this study shows that the compressive strength of the original soil is 127,78 kPa, which increases to 153,46% after the addition of 5% cement. Then in the 14 days curing time, the compressive strength of soil-5% cement is 1684,09 kPa. The highest compressive strength value is 1711,60 kPa which is obtained when the soil is stabilized with 5% cement addition, 0.6% DIFA soil stabilizer, and 14 days of submersion.Keywords: compressive strength, CL-ML, stabilization, DIFA soil stabilizer, cement
Identifikasi Faktor-Faktor Yang Mempengaruhi Nilai Idle Time (IT) Di Pelabuhan Dumai (Dermaga A) Feri Setiawan; Trimaijon Trimaijon; Ferry Fatnanta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Ports are place for docking, shipping and unloading. Any activities have done by any ships have some difference. Problem due shipping activities is idle time (IT) during working caused by several factors raining, loading, regulation, damaged crane ships, etc. Other problem from shipping a factor classification is necessity.Factors that cause idle time are classified into three groups. 1) Human error including waiting for truck, operator, worker, and delay for work. 2) Technical errors including emptying storage, damaged equipment, and damaged ship, 3) Factor fromnature including rain and tides. All these factors cause delays in shipping. Based on the analysis, the most dominant factor in fluctuation is due damaged equipments with the total number of hours were 283.6 hours a year. Mean for the dominant factor due damaged equipments waste 23.64 hours per month. Solution of the problems that occur are the good planning on shipping and co-ordination between companies and port management.Keywords: harbor, Idle time, loading and unloading, equipment failure
Analisis Penyebab Keterlambatan Bongkar Muat Barang Akibat Faktor Peralatan (Studi Kasus : Dermaga A Pelabuhan Dumai) Muhammad Safrianda; Rinaldi Rinaldi; Ferry Fatnanta
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

Port is defined as the intersection of land and water transportation nodes withloading and unloading activities of goods. The loading and unloading activities requiredecent equipments to support process. Any equipment that fails to function properly willgreatly delay the loading and unloading process in the port.Several factors that affect loading and unloading delay of goods are due to disabledequipment and human error which are classified into technical factors. These technicalfactors include broken equipment and human errors such as pending truck and operatorarrival.Based on the analysis on PT. Antarindo Wahana Cargo, the company that performsthe loading and unloading activities in Dumai Port A, the main factor which contributes tothe delay was broken equipments. The worst idle time that occurs due to the brokenequipments was 0,69% (5 hours) during February 2015. The offered solution to minimizethe idle time due to the broken equipments: 1) periodic maintenance especially for oldequipments, and 2) renting other equipment to replace the broken equipment so theloading and unloading process could be done timely.Keywords : port, idle time, loading and unloading, equipment, broken equipment
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
Karakteristik Nilai Kuat Tekan Bebas Tanahan Lempung Terhadap Perubahan Kadar Air Dan Tebal Lapisan Pemadat Fikri Hidayat; Soewignjo Agus Nugroho; Ferry Fatnanta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Cohesive soil is a type of soil which is requiring a special handling. Clay as a soft soil has bad characteristic, so it needs to be improved in term of stability and bearing capacity. In Indonesia, there are many buildings and civil construction which have been damaged because they were built on expansive clays. For example, in the field we often find bumpy road pavement. This is happened due to poor bearing capacity of the subgrade which contains expansive clays. The aim of this research is to obtain significant factors that influence the UCS value and shape of the crack due to variations in density, moisture content and thickness of the compacted layer. Density variation used was amount of compaction energy. Variations in moisture content were 2% under OMC (OMC-), optimum moisture content (OMC) and 3% above OMC (OMC +). The thickness of the layers was controlled by the weight of the soil of each compaction layer. Moisture content variation results showed that the soil with the moisture content of OMC has largest UCS value. Test results from soil weight per layer showed that the lessest weight of soil, the highest of UCS value. This is because of the weight composition of each layer is evenly distributed. The most extreme collapse occurs in the second layer of each layer weight variation with the center of collapse in the middle layer.Keywords: Moisture content, UCS, soft clay, expansive soil
Karakteristik Nilai Kuat Tekan Bebas Stabilisasi Semen Tanah CL-ML Terhadap Siklus Pembahasan Pengeringan Dodi Pratama; Ferry Fatnanta; Muhardi Muhardi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The soil that classified as CL-ML soil have range of plasticity index around 4% s/d 7%, and liquid limit with range 12% s/d 30% according to the Casagrande Plasticity graph, this soil condition is very susceptible to the addition of water content so that cause soil at winter season being easily melted as a porridge and cracked as of existed at retrieval specimen location at dry season. This retrieval specimen location located at Government Office of Pekanbaru Area, Indonesia. This situation being problem if there is construction work above it such as road construction. Soil restoration is necessary for stabilizing soil. In this case used stabilizing soil chemically. Ihis research focuses to cycle process of wet-dry toward soil mechanical characterize effect that stabilized by cement. This research result showed that value of unconfined compressive strength toward wet-dry cycle have different values. Cement addition to CL-ML soil get very significant increasing of unconfined compressive strength. Highest increasing unconfined compressive strength is on 7 days curing, 3x 24 hours, drying second cycle about 1.636,51 kPa, this thing caused by cement that contained in 7 days cured soil reacted and turned into paste dan eventually cement that contained in soil start hardened, so that is able to increasing unconfined compressive strength value high enough.Keywords: Wet-dry cycle, UCS, CL-ML, cement stabilization.
Mekanisme Keruntuhan Fondasi Tiang Helical Tunggal Pada Tanah Gambut Secara Numerik Menggunakan Model Soft Soil Creep Fadel Muhammad; Syawal Satibi; Ferry Fatnanta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Peat is spread widely in Sumatera Island, especially in Riau Province, Indonesia. Peat is included as problematic soil because it has low bearing capacity. The use of helical pile foundation on peat is one of the innovations to increase the peat’s bearing capacity. In this research, numerical modelling of single helical pile foundation load test on peat were carried out, based on the full-scale test conducted by Suratman (2019). The modelling were done by using PLAXIS 2D 2016 program with Axisymetry model type, with the Soft Soil Creep (SSC) soil model. This modelling aimed to know the failure mechanism of model. The parameters used in the modelling were obtained from laboratory test data and field tests and also from trial and error method. The failure mechanism that occurs on the Soft Soil Creep (SSC) model is more likely to be a cylindrical shear failure.Keywords : Peat, Helical Pile, PLAXIS 2D, Failure Mechanism.
Peramalan Tinggi Gelombang Transmisi Dengan Permodelan Gelombang Irreguler Pada Pemecah Gelombang Kantong Pasir Tipe Tenggelam Menggunakan Artifical Neural Network (ANN) Muhammad Rico Saputra; Imam Suprayogi; Ferry Fatnanta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

There are some conditions and problems in coastal engineering that can’t be solved by mathematical analysis. ANN method is a soft computing method has been usesd to solve many problems in any cases. Judging from the success of the research is the application of ANN method, it is necessary to prove the performance of the ANN method to predict transmission waves for sandbag breakwater.The Incoming wave, period, slope, width crest, freeboard, shape and arrangement of sandbags are the parameter that can be used as the test variables. The process to get the result is consisted by training, testing, and validation process. The algorithm used in the development of ANN model is backpropagation algorithm.The results obtained in this study indicate that the performance of the ANN model that has been made to produce the value of the test statistic parameters of the correlation coefficient (R) and Root Mean Square Error (RMSE) that categorized as a very strong correlation and has small error. The best forecasting scheme obtained that the forecasting which resulted in a correlation coefficient (R) is 0.95111 and RMSE value 0.6529 cm.Keywords: forecasting, ANN, Transmission waves, Breakwater
Pengaruh Kadar Lempung Dan Kadar Air Pada Sisi basah Terhadap Nilai CBR Pada Tanah Lempung Kepasiran (Sandy Clay) Muhammad Iqbal; S A Nugroho; Ferry Fatnanta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

CBR (California Bearing Ratio) is one method for determining the bearing capacity of the subgrade . In highway planning , subgrade bearing capacity will affect the pavement thickness, the higher bearing capacity of subgrade makes the pavement thickness which needed to withstand the traffic load is getting thinner. Research conducted at the Laboratory of the CBR value is generally only done on the condition of the water content in a state of OMC and saturated, this study investigated the changes of CBR value with moisture content in the range of OMC to saturated of the sandy clay soils, and with clay in different contents. The results of this study indicate that, when the soil is compacted at OMC conditions, increasing contents of clay reduce CBR values, and submersion decreases CBR values of 14,294% at the top of sample and of 13,167 % at the bottom of sample. When soil is compacted with moisture content above OMC, increasing contents of water reduce CBR values.  Key Words: CBR, clay, water content
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 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 Fachry Abda El Rahman Fadel Muhammad Fadhilah, Randy Fadhlurrahman, Fadhlurrahman Fadlan Fadlan Fajrian Saddek Fauzan Hidayattullah Fauzi, Manyuk FERI SETIAWAN Fikri Ananda Fikri Hidayat Frimadofi Frimadofi Galang Maulana Gina Purnama Sari Giri Prayoga 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 Lingga Panji Subrata, Lingga Panji Lisa Trisnawati Lubis, Shakila Fuadah M Faizal Alridho M. Yusa Maulidi, M Aldi Monita Olivia Mufriadi Mufriadi Muhamad Yusa Muhammad Ikhsan Muhammad Khadafi Lembasi Muhammad Naufal Muhammad Rico Saputra Muhammad Safrianda Muhammad Yevizal Muhammad Yusa Muhardi Muhardi Muhardi Mukhelnalis Sutazril Nova, Septi Devita Novan, Andre Ongko, Andarsin Prayogo, Giri Rafika Rani Zainuddin 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 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