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Ferry Fatnanta
Universitas Riau
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Pengaruh Penambahan Kapur Dan Abu Batu Bata Terhadap Nilai Kuat Tekan Bebas Dan CBR Pada Tanah Lempung Kecamatan Tenayan Raya Prayogo, Giri; Nugroho, Soewignjo Agus; Fatnanta, Ferry
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

A Tenayan Raya subdistrict is an area where there is an adequate thick of clay layer. This condition is seen during rain that the soil become softer, while in dry conditions there are many cracks on that soil. In case, it can cause some damages to the building due to the tilt of the building's foundation as an effect of shrinkage soil. Tenayan Raya also known as a brick production area. The brick production process may generate ash as a waste of brick kilns which has not been utilized optimally. This study aims to utilize brick ash as an additive material to improve clay properties in term of reducing its shrinkage feature. A certain amount of brick ash were mixed to clay soil and lime also were two added as a companion of a stabilizing agent. Some variation properties of two additive materials were applied in the sample of UCS and CBR tests. The effect of curing and soaking time was also be checked in term of UCS and CBR value changed. Based on properties tests, the clay soil classified standard. The mixture of 80% clay + 10% lime + 10% brick ash, in OMC condition, has the maximum of UCS and CBR laboratory test value. Curing and soaking time also has a significant contribution in increasing UCS and CBR value. The maximum value of both tests was reached at day 7th of curing and soaking time.Keywords : Clay, Swelling, Stabilization, Lime, Brick ash, Soil bearing capacity
Karakteristik Pemanpatan Tanah Gambut Dengan Variasi Serat Wulandari, Deny; Fatnanta, Ferry; Nugroho, Soewignjo Agus
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

A peat soil has different characteristics compared to clay, therefore some consolidation tests are needed to obtain a proper compression method when construction are located on peat soils. The purpose of this research was to determine the compression characteristics of peat soil with fiber variation based on Gibson and Lo (1961) method and laboratory testing. This research used amorphous peat, a samples which taken from Tambang, Kampar. The first sample is undisturbed, and the second with zero fiber, 30 % fiber and 60 % fiber. The equipment used consist of modified consolidometer, with a diameter and height are 15 cm. The load were applied 10 kPa, 20 kPa, 40 kPa, 80 kPa and 160 kPa. Some loads were added every 14 days. The result showed that water content has no influence to settlement, and samples with great amount of water content has low strain. Samples with high fiber content and low unit weight, i.e. 60% of fiber content produce the highest strain. Therefore, unit weight is a very crucial point in determining settlement in this research. Square root of time method can’t be used on peat due to the different from settlement vs time root curve. The void ratio vs strain curve formed in concave shape due to the macropores and micropores inside the peat. On real condition and 30% of fiber samples, the time to reach 90 % of compressibility were reduced along with enhanced loads, the fiberless and 60 % of fiber samples were increased along with enhanced loads. Gibson and Lo method can’t be used on amorphous peat. Hence, it needs to be corrected with primary compression parameters (a), secondary compression parameters (b) and .Keywords: Peat, Amorphous, Fiber Content, Consolidometer
ANALISIS POTENSI LIKUIFAKSI BERDASARKAN UJI PENETRASI STANDAR (SPT) (STUDI KASUS: PEMBANGUNAN FLY OVER JL. TUANKU TAMBUSAI – JL. SOEKARNO HATTA PERKANBARU) Gustika, Rani Ardeylina; Yusa, Muhamad; Fatnanta, Ferry
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Indonesia is the country that located and surrounded by three great continental plates, where the earthquakes are usually happens. This kind of phenomenon has some direct impacts, which one of them is soil liquefaction. Soil liquefaction is a phase transition process from solid to liquid phase due to increasing the pore water pressure that caused by cyclic loading. This study aims to identify the susceptibility of materials to liquefaction phenomenon using the grain size distribution curve, to analyze the safety factor (FS) and liquefaction potential index (LPI). In order to do this study, one bore holes were observed by using standard penetration test (SPT) to evaluate the liquefaction potential phenomenon. The values taken for the peak ground acceleration (PGA) are 0,250 g, 0,288 g and 0,315 g while the values of 5,00, 6,45 and 7,90 were taken as moment magnitude (Mw). The results of this study shows that the materials are susceptible to liquefied based on grain size distributions. Furthermore, the location has a potential of liquefaction, and give values between 0,250-11,084 with a low to very high of LPI category.Keywords: soil liquefaction, susceptibility, safety factor, liquefaction potential index.
PENGARUH VARIASI JARAK PELAT HELICAL TERHADAP KAPASITAS DAYA DUKUNG TEKAN PONDASI HELICAL PILE PADA TANAH GAMBUT DENGAN METODE CONSTANT STRESS OF PENETRATION Fadhilah, Randy; Fatnanta, Ferry; Nugroho, Soewignjo Agus
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

A study of the determination of helical pile bearing capacity based on static load test on peat soil has been done previously. However, the research is still covered in one method of loading which is the Constant Rate of Penetration (CRP). Therefore, it is deemed necessary to apply static load test on the helical pile on peat soils by using other loading method as a comparison. One of the test methods is Constant Stress of Penetration loading test. In this research, the helical piles used amounted to 9 piles. The loading were performed in six stages with a total load of 1200 kg. The data obtained from this test consist of settlement curve against time and loading curve against settlement. Determination of bearing capacities of helical piles were based on individual bearing and cylindrical shear method, and interpretation of test data based on Tangent Intersection and Terzaghi & Peck method. The results of the interpretation of the test data indicate that in the LMS (Large-Medium-Small)and LM (Large-Medium)helical pile groups have effective space between helical plates is from 20 to 30 cm. While in the LL (Large-Large) helical pile group, the effective space between the helical plates is from 30 to 50 cm. Based on comparison of calculation result with interpretation of test data, peat coefficient value used is 8%. Interpretation of test data tends to be closer to the cylindrical shear method with a standard error of 0.74 than the individual bearing method with standard error of 1.03.Keywords: Helical Pile, Peat Soil, Individual Bearing, Cylindrical Shear
Studi Perilaku Tahanan Cabut (Pull - Out Resistance) Pada Tanah Berpasir Putra, Hadiyan; Fatnanta, Ferry; Muhardi, Muhardi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Soil improvement technique was first introduced by Vidal, 1966, by using a metal strip as soil reinforcement on structure reinforced earth. Soil improvement techniques suited to reinforcement materials used in the structure of soil retaining walls, road structure, the base of the bridge, and repair slopes. Proven by use steel reinforcement, in addition to structure flexible and easy in implementation, can also reduce deformation both vertical and lateral directions. Selection is based sand graded well as the properties it owns, among tractable in employment stack, including the last ingredient, and not cohesive strength is not affected until the rate of moisture. Pull out resistance scale laboratory use plain steel reinforcement diameter 10 mm with the direction and shape of the power profile is retrofitting the longitudinal direction, transverse direction, square-shaped profile, the profile of triangular and square-shaped profile combination. Each test used optimum water content (OMC) and tensile stress normal to be used only on reinforcement overburden soil. In testing using shaped reinforcement square profiles obtained resistivity values greater pull out resitance than the pull out resistance value using directional and other forms of reinforcement profiles. Keywords: Reinforcement, pullout resistance, water content
Pengaruh Jumlah Plat Helical Terhadap Daya Dukung Pondasi Tiang Helical Pada Tanah Gambut Parlan, Parlan; Fatnanta, Ferry; Muhardi, Muhardi
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 Pile A manufactured steel foundation consisting of one or more helix-shaped bearing plates affixed to a central shaft that is rotated into the ground to support structures. At thisresearch will be presented result of static loading test constan rate penetration method (CRP) helical pile conducted at peat. Result of data from loading test in the form of load and degradation interpretation with tangen of intersection method. addition sum up the same plate helical diameterwill improve the capacities support helical pile. But if plate helical most under smaller hence addition sum up the plate helical do not have an effect on the signifikan to Qultimate the helicalpile though plate helical for bigger. Result of the encumbering attempt compared to by result of energy calculation support the helical pile use the method of Induvidual plate bearing and cylindershear. From comparison result known that by Qultimate the method of cylinder shear more coming near result of burden test with the standard error 2,37 while ,Qultimate the individual method of plate bearing come near result of burden test with the standard error 4,38.Key words : helical pile, peat, individual plate bearing, cylinder shear
Analisis Kelayakan Panjang Dermaga Curah Cair Berdasarkan Data Kunjungan Kapal Di Pelabuhan Dumai Manik, Bramson P; Trimaijon, Trimaijon; Fatnanta, Ferry
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

The length’s advisability of the berth can be seen from the Berth Occupancy Ratio (BOR). The pour liquid berth (Berth B) in Dumai’s harbor is one of the berth which has a higher activity and the ships that come increasing everyday. The increasing ships in Berth B need a project to know the value of visiting ships and the value of BOR in short term, middle term and long term. Project is done in order Berth B can hold the ships that will tether by adding the length of berth.The value of BOR in short time projection until 2019 is 75,86 % and the number of ships are 744. To fulfill The Standard Of Managing Director Of Marine in 2011, the value of BOR was 69% therefore the berth should be lengthened about 70 meters. In 2019 the short time projection the length of Berth B becomes 870 meters.Based on project result the visiting ships are 984, the value of BOR in middle term is 87,94% in 2024. To fulfill the value of BOR which is 69%, the Berth should be lengthnened formerly 870 meters become 1100 meters.The long term projection until 2029 the value of BOR is 83,71% with the number of visiting ships 1224. To fulfill the value of BOR that is 69%, the Berth should be lengthnened around 220 meters. The length of berth totally 1320 meters which is formerly 1100 meters in 2029Keywords: harbour, berth, visiting ships, BOR, projection
Characteristic Soils "Soap" At Site Project Of Pekanbaru Mayor's Office Joshua, Norman; Fatnanta, Ferry; Nugroho, S A
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Soil characteristic in field did not always meet specifications in planning to carrying out construction works . A good construction such as roads, buildings , and other construction will be able to last long if its supported by a good foundation soil ( Hartosukma , 2005) . One of the site project of Pekanbaru, there are soils are fragile when seen by direct eyes and can cause problems in the construction field. Therefore , the research would take up to study the characteristics of soils “soap” at the site project of Pekanbaru Mayor’s Office Development through the physical and mechanical properties of the soil type .Keywords: “ Soap ” Soils, Characteristics, Pekanbaru
Pengaruh Waktu Curing Terhadap Nilai Swelling Pada Tanah Lempung Dengan Campuran Fly Ash Dan Bottom Ash Lembasi, Muhammad Khadafi; Nugroho, Soewignjo Agus; Fatnanta, Ferry
Dinamika Rekayasa Vol 17, No 1 (2021): Jurnal Ilmiah Dinamika Rekayasa - Februari 2021
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2021.17.1.346

Abstract

Tanah lempung yang berplastisitaas tinggi memiliki masalah dengan kembang susut yang cukup tinggi, oleh karena itu perlu adanya stabilisasi agar nilai pengembangan pada tanah lempung plastisitas tinggi turun dan dapat digunakan sebagai tanah dasar dalam suatu konstuksi. Upaya stabilisasi yang dilakukan dengan dengan cara mencampurkan tanah lempung dengan bahan adiktif berupa abu dasar, abu terbang, dan kapur. Tujuan penelitian ini adalah untuk mengetahui pengaruh lama waktu pemeraman untuk mendapatkan nilai pengembangan terkecil pada tanah lempung plastisitas tinggi akibat penambahan bahan adiktif berupa kapur, abu dasar dan abu terbang. Hasil menunjukan bahwa dengan penambahan bahan adiktif dan memberi perlakuan berupa pemeraman pada campuran tanah lempung dapat menurunkan nilai swelling. Untuk kondisi optimum potensi pengembangan terjadi pada variasi campuran L 5% + MS6 95%, dimana pada campuran tersebut potensi pengembangan sangat kecil dibandingkan dengan tanah asli dan tanah campuran lainnya. Dapat dilihat dari kondisi pemeraman 28 hari penurunan yang terjadi sebesar 98% dibanding tanah asli yang tidak diberi perlakuan. Jadi, dapat disimpulkan dengan memberi campuran bahan adiktif dan diberi pemeraman dapat memperbaiki tanah asli dan dapat memperkecil nilai swelling potential
Pengaruh Jarak Antar Fondasi Dan Kekasaran Terhadap Daya Dukung Fondasi Tiang Kelompok Sayoga, Davin; Fatnanta, Ferry; Nugroho, Soewignjo Agus
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Upper soil crust of coastal area in Indonesia consists of greatly-thick soft soil. Therefore, the use of end-bearing type pile foundation on that kind of area is highly discouraged due to how expensive it is economically. Friction pile becomes an alternative foundation for coastal area, however there is still little friction between pile surface and soil due to concrete and steel’s smooth surface. Pile modification via improving pile surface’s coarseness can be considered as an alternative for improving friction force between pile and soil. This study aims to determine the effect of pile surface coarseness towards pile surface’s bearing capacity. This study was conducted by making a varying type of coarseness of the pile surface and distance between piles. The first type of coarseness is matched with pile with concrete ingredient. The second type of coarseness is made with stone shards which cover the pile surface in its entirety. The third type of coarseness is a variance of how the first and second coarseness are made, however with same length between segments. The observation was conducted in a laboratory and with loading test applied on the pile model. The test results were analyzed with graphic method. The resulting study shows that there is an improvement in bearing capacity. Foundation with coarseness on its surface has higher Qult value (98,03% - 134,63%) than those without coarseness. Keywords : Soft Soil, Pile Foundation, Coarseness, Static Loading Test, Interpretation of Loading Test
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