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Journal : JURNAL ILMIAH MEDIA ENGINEERING

ANALISIS KESTABILAN LERENG DENGAN ALAT FJM 2017 Turangan, Virginia; Manoppo, Fabian J.; Rondonuwu, Steeva G.
JURNAL ILMIAH MEDIA ENGINEERING Vol 8, No 2 (2018): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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ANALISIS KESTABILAN LERENG DENGAN ALAT FJM 2017
ANALISIS DAYA DUKUNG TIANG BOR (BORED PILE) PADA STRUKTUR PYLON JEMBATAN SOEKARNO DENGAN PLAXIS 3D Harsanto, Christian; Manoppo, Fabian J.; Sumampouw, J. E. R.
JURNAL ILMIAH MEDIA ENGINEERING Vol 5, No 2 (2015): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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All construction is engineered for resting on the ground should be supported by a foundation. Foundation serves as the support of the building and continue building loads on it to ground layer sufficient carrying capacity. In planning the foundation on the bridge pylon Dr. Ir. Soekarno used types of foundation pile (bored pile) because the structure of the soil at the location of the pylon is generally composed of loose sand soil or soft clay. In analyzing the bearing capacity of the foundation pile (bored pile) used two ways namely static and PLAXIS 3D. Static way a correlation analysis calculations using formulas that already exist or that are generally often used. While PLAXIS 3D is a finite element program for geotechnical applications where land use models to simulate the behavior of soil. Results of capacity analysis by means of static and Plaxis 3D produces the best configuration is setup in a way satis I. Analysis: N = 17.563 tonnes, Q = 4.329 tons, M = 6.615 ton-m, S = 0.087 m, Yo = 0.044 m. While the analysis with Plaxis 3D: N = 14.320 tonnes, Q = 25.800 tons, M = 5.340 ton-m, S = 0.025 m, Yo = 0.023 m. Keywords : Bored Pile, Bearing Capacity, Static, Plaxis 3D.
Pemodelan Pengelolaan Risiko Proyek Pembangunan Jaringan Irigasi Sangkub Kiri Kabupaten Bolaang Mongondow Utara Soetopo, Aprilya Ainy; Willar, Debby; Manoppo, Fabian J.
JURNAL ILMIAH MEDIA ENGINEERING Vol 7, No 3 (2017): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Irrigation is an effort to supply, regulate and dispose of irrigation water to support agriculture, swamp irrigation, underground air irrigation, pump irrigation and pond irrigation. The implementation of irrigation development in Sangkub and Bintauna sub-districts, North Bolaang Mangondow Regency, North Sulawesi  Province with irrigated rice field area consisting of Sangkub Kanan and Sangkub Kiri. The construction of Left Sangkub Irrigation Network were indicated to be delayed, so there is a need to identify, analyze, mitigate and allocate all of  possible risks that will occur. Regarding to this, the  risk modeling were used as the basis for decision making by related parties to overcome the negative consequences that would occur in the construction of  irrigation networks.                The aims of this research are to identify various types of risks in the implementation of the construction of the Left Sangkub Irrigation Network., to know the risks that belong to the dominant category (major risk) on the implementation of the construction of Sangkub Left Irrigation Network and to design the existing system and risk mitigation management models to minimize negative things that may occur.                In this research it were use the qualitative risk analysis method involving 10 respondents from owner, contractor and consultant. Qualitative risk analysis method aims to make description, picture or painting systematically, factually and accurately about phenomenon or relationship between phenomena to be investigated.                Results showed that there were 47 risk had be found in the construction of Sangkub Kiri Irrigation Project, consisting of political (5), environment (5), economy (3), finance (5), natural (3), project (6), human (5), technical (9), criminal (3) and safety (3). The risk analysis indicated that there were 13 risks (27.66%) unacceptable, 25 risks (53.19%) undesirable, 7 risks (14.89%) Acceptable and 2 risks (4.26%) negligible categories.                All of unacceptable risks were dominated by human risk including labor delays due to holidays, while undesirable risks are dominated by technical risks such as non-conformity between the volume of contract work and field conditions requiring a review of the work location.                The risk mitigation were aims to reduce the negative impact of risks including the category of major risk. Among all 13mitigation of unacceptable risk , one of them is a mitigation to discipline the workforce and to implement a rotational work system so that workers can recover their condition. While the risks included in the undesirable category are carried out 25 mitigation actions ie mitigation actions discuss and propose changes in the volume of work with added work less to adjust between the volume of contract work and field conditions. Keywords: Risk management, irrigation network, risk mitigation, dominant category
Analisis Kestabilan Tanah Timbunan (Embankment) Pada Tanah Rawa Dengan Menggunakan Bambu (Studi Kasus : Jalan Toll Manado-Bitung) Lestari, Mariati Indah; Manoppo, Fabian J.; Rondonuwu, Steeva G.
JURNAL ILMIAH MEDIA ENGINEERING Vol 8, No 2 (2018): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Construction of the road structure in the form of embankment on soft ground conditions posesome problems, such as stability, seattlement, horizontal movement (lateral displacement), andcollapse of ground slopes or uneven base decline (differencial seattlement). This is because soft soilsgenerally have strong shear and low permeability and great compressibility. Because the soft soil hasa low permeability, the time required for consolidation is longer. At the time of consolidation, theground stress at the beginning of the loading is borne entirely by the pore-water stress. Then slowlythis stress is transferred to the effective stress of the soil, so that the soil has increased the strength andcarrying capacity. Thus, if a construction is to be built on soft soil, in order to avoid a substantialsettlement in the building and to obtain a good carrying capacity of the soil, the construction processshould be carried out after the soil has been fully consolidated. In this study it will be on the analyzethe stability problems on embankment on soft soil by using bamboo as micropile with case studiesmarshland improvement efforts to heap on it on a toll road project Manado Bitung in North Sulawesi.       The aims of this study are to obtain a graphic relationship between safety factor value andengineering properties of soil (c, φ, γ) and to obtain a graphic relationship between safety factor valueand it’s α   value.      Methods used in this study are laboratory scale experiment using bamboo as micropile to simulatethe soil stability and rockscience program forn slope stability analysis.      Results revealed that based on the analysis results of construction of embankment without bambooas micro pile and construction of embankment with bamboo as micro pile, it can be concluded that  asswamp land has low carrying capacity and generally have high water content and very lowpermeability so often cause problems inside construction of civil buildings. A common problem withsoft soil is the problem of stability. The result of the analysis, showed that other data ( , γ, c, h,) ifthe value of   increase then the safety factor will increase, also if the value of c increase then thesafety factor  will increase, but if the value of γ is decrease then the safety factor will decrease. Byraising the h embankment height, will reduce the safety factor value.Keywords: slope stability, geological process, landslides, Rocscience slide program, safety factor
ANALISA PERKUATAN TANAH DENGAN BAMBU SEBAGAI MICRO PILE PADA TANAH LIQUEFACTION (Proyek PLTU Manokwari) Salauwe, Richard; Manoppo, Fabian J.; Monintja, Saartje
JURNAL ILMIAH MEDIA ENGINEERING Vol 5, No 2 (2015): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Likuifaksi adalah salah satu fenomena dari Permanent Ground Deformation (PGD) yang terjadi pada kondisi gempa dengan skala besar, dimana tanah pasir jenuh kehilangan kekuatannya akibat meningkatnya tekanan air pori secara berlebihan dan menurunnya tegangan efektif tanah karena proses pemadatan yang terjadi akibat adanya getaran gempa. Tanah pasir ini kemudian memiliki perilaku lebih mirip cairan dari pada tanah itu sendiri. Penelitian ini bertujuan untuk mengetahui Perkuatan tanah dengan bambu sebagai pemodelan micro pile untuk daya dukung  aksial,  perkuatan tanah dengan bambu sebagai pemodelan micro pile untuk daya dukung lateral, serta defleksi yang terjadi dengan bantuan plaxis 3D, serta aman terhadap penurunan yang terjadi, baik sebelum terlikifaksi, sesudah terlikifaksi, dan setelah perkuatan dengan bambu sebagai pemodelan micro pile. Hasil dari penelitian ini juga menyatakan bahwa daya dukung tanah terlikifaksi adalah 1992,145 KN/m2, setelah diberikan perkuatan dengan bambu pemodelan micropile, hasil daya dukung meningkat menjadi 2219,355 dari metode Meyerhof, dan 3609,723 dari metode Luciano Decourt. Sedangkan menggunakan bantuan program Plaxis 3D, daya dukung menjadi lebih kecil yaitu 7,36 KN. Sedangkan untuk penurunan tanah setelah terlikifaki sebesar 2,987127 mm, dan setelah perkuatan, penurunan menjadi 0,82717 mm dari Qp dan Qs meyerhof, dan untuk Qp dan Qs Luciano Decourt 1,990 mm. Jika di bandingkan dengan program plaxis 3D, penurunan yang terjadi akan  lebih kecil = 0,0022940 mm, dari pada cara analitisnya. Kata Kunci: Tanah Liquefaction, Perkuatan DDT, Plaxis 3D
PENETAPAN PRIORITAS PENANGANAN PANTAI BERDASARKAN PEMILIHAN JENIS BANGUNAN PADA PROYEK-PROYEK KONSTRUKSI BALAI WILAYAH SUNGAI SULAWESI-I (BWSS-I) Ratulangi, Deddy R. G.; Manoppo, Fabian J.; Willar, Debby
JURNAL ILMIAH MEDIA ENGINEERING Vol 7, No 3 (2017): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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The eastern outskirts of North Sulawesi province areas are areas of local government development. Its geographical position which almost entirely consist of coastal areas are ultimately requires protection in the framework of synergy for the holistic government policy. An alternative way to protect the beach is by construct  a beach shoreline structures. Coastal protection building type if structurally reviewed consists of 4 (four) main type of building that is Seawall, Groin, Jetty, and Breakwater. These types of coastal protection buildings can be combined. The beaches in the eastern region of North Sulawesi province for this research are Rumbia beach, Walensorit beach, Bukit Tinggi beach, Parentek beach, Atep Oki beach, and Kament beach. The aims of this research are  to examine the extent of damage, vulnerability and coastal virtues on the beaches of the eastern ring road of North Sulawesi province and to conduct the process of selecting the type of security building on the eastern coastal beaches of North Sulawesi province if viewed in a priority scale of interest and also to determine the most dominant type of coastal security building to be built on the eastern coastal coasts of North Sulawesi province. In this study, data were analized by using Analytical Hierarchy Process, AHP. Based on the research results obtained, for the type of coastal protection building that is generated are as follows: Rumbia beach: Seawall (24.142%), Breakwater (20.510%), and Seawall + Breakwater (17.965%); Walensorite beaches: Groin (17,671%), Jetty (17,033), and Seawall + Groin (14,528); Bukit Tinggi beaches: Seawall (15.349%), Jetty (12.674%), and Groin (12.609%); Parentek beaches: Seawall (13.149%), Groin (13.132%), and Seawall + Jetty (10,437%); Atep Oki beach: Groin (19.234%), Jetty (15.430%), Seawall + Groin (14.44%); And Kamenti beaches: Seawall (12.763%), Seawall + Breakwater (11.283%), and Breakwater (10.960%). For the type and condition of the eastern coastal shore, the most dominant type of coastal safety building is the Seawall and Groin beach type safety structures. Both types of buildings are very appropriate for large erosion, abrasion and wave rates. While the difference between these two types of coastal safety buildings is the level of sedimentation, which for Seawall is suitable for low sedimentation levels, while Groin is suitable for large sedimentation levels. Keywords: Coastal Protection Structure, AHP, Seawall, Groin, Jetty, Breakwater
Stabilisasi Tanah Ekspansif Dengan Campuran Abu Batu Bara Dan Abu Terbang Batu Karang Dengan Aplikasi Timbunan Tipe Urugan Tanah Sompie, Fergy A. E.; Manoppo, Fabian J.; Sompie, Oktovian B. A.
JURNAL ILMIAH MEDIA ENGINEERING Vol 8, No 2 (2018): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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The expansive soil is a soil which clay content has a potential for shrinkage due to changes in water content,causing changes in the volume of soil. The expansive soil is a problematic type of soil in a construction project,especially for the construction of a base ground of a building because it contains montmorillonite minerals withthe largest surface area and is very easy to absorb water. The ground with high shrinkage value, the waterbecomes very influential to the behavior physical and mechanical soils. Therefore, in conducting theconstruction planning, investigation or soil investigation must be conducted in order to know the physical andmechanical properties of the soil if the soil contains clay mineral that is expansive so that we are able to stabilizeto increase the strength and carrying capacity of the soil. Stabilization is done by using fly ash (fly ash) coal androcks.       The objective of this research is to obtain the shear parameter value after mixing coal fly ash and coral aswell as to know the application on landfill type by using 2D plaxis program to know the value of decrease,excess pore water pressure and safety factor. The composition of the mixture used for obtaining shear parametervalues is coal fly ash + ash, soil + rock fly ash and soil + coal fly ash and coral reefs of 2%, 4%, 6%, 8%respectively. For applications on the design of embankment type of soil type taken mixture composition is soil +coal fly ash, soil + fly ash rock and soil + fly ash coal and coral reef 2% and 8% respectively. The sample of thesoil is taken in Warembungan Village, Pineleng District. Investigation of physical and mechanical properties ofthe soil is also carried out such as filter and hydrometer analysis, moisture content, specific gravity, atterbergtest, consolidation test to determine the development (swelling) and CBR Laboratory.       The results showed that the addition of fly ash coal, rock and coal + corals showed the variation of cohesionvalues and shear angle in the increasing percentage of fly ash coal, coal and coral + coal. The original soilcohesion value is 1.72 t / m2 and the inner shear angle is 11.8 °. In mixing between expansive soil + fly ash coalmaximum cohesion value was found at 8% addition which was 1.90 t / m2 while the shear angle value rose to17,93 ° at 6% addition. In mixing of expansive soil + fly ash of rock the maximum cohesion value is in 2%addition which is 1.48 t / m2 while the shear angle value rises to 30,10 °. In mixing of expansive soil + fly ashcoal + coral maximum cohesion value is in 2% addition which is 0,58 t / m2 whereas shear angle value rose to38,80 °. For embankment applications with 0% or no mixture of decreasing values, excess pore water and safetyfactors are 0.312 m, 2.34 kN / m2, and 1.18, respectively. In mixing between expansive soil + fly ash coaldecreased slightly on 8% variation where the value of decrease, excess pore water and safety factor were 0.35 mrespectively; 0.565 kN / m2, and 1.117. In mixing between expansive soil + fly ash rocks, the decreasing value,excess pore water and safety factor increased in 2% variation respectively to 0.188 m; 0.777 kN / m2, and 1,253.In mixing of expansive soil + fly ash coal + coral, decreasing value, excess pore water and safety factorincreased in 2% variation to 0.267 m respectively; 0.657 kN / m2, and 1.245.The addition of fly ash to coralreefs is more effective and efficient than coal in raising the value of soil shear strength parameter but in landfillapplication will be more effective if it is done the addition of both fly ash coal + coral to get smaller decreasevalue and safety factor greater than. It is recommended to first base soil stabilization and use better materialselection for embankment to further increase the safety factor and minimize the decrease value. Keywords: expansive soil, high shrinkage, stabilization, fly ash coal, coral reef ash, safety facto
Kajian Efisiensi Pembangunan Waduk Kuwil Untuk Reduksi Banjir Di Manado Akibat Sungai Tondano Pua, Michael; Sumarauw, Jeffry S. F.; Manoppo, Fabian J.
JURNAL ILMIAH MEDIA ENGINEERING Vol 7, No 3 (2017): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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In order to improve the protection of people from water damages disaster, the fulfillment of water sufficiency for most people and farming people, then one way to support the above is to create a multipurpose dam that is Kuwil dam, in addition useful for controlling the ultimate flood-witch This is often the case in Manado and its surroundings. Also, in order to control the flood of Manado City and its surroundings, serious and integrated handling is needed from various related parties. One of the main river that flows Manado City is Tondano river. To control flooding, other than through non-physical effort, physical effort from construction technology is required. The selection of flood control buildings must be carefully calculated, the advantages, disadvantages, benefits and controls. Dam is an irrigation infrastructure that has a very high risk if it fails. Therefore, prior to the construction of dam, there are 3 (three) certifications that must be owned by the prospective owner of the dam. The certification in question is design certification aimed at testing the feasibility of the design details submitted by the consultant team; filling certification that aims to test the physical worthiness of the dam; and operational certification that aims to check the physical viability of the dam over a period of time.Kuwil dam is located across the Tondano river precisely in Kuwil Village, Kalawat Subdistrict, North Minahasa Regency, North Sulawesi Province which is ± 20 km from Manado city, the capital of North Sulawesi Province.The aims of this research are:  To find out the effectiveness of Kuwil dam as a flood reducer in Manado and in order to know the stability of dam  for spillway building due to flood discharge.Method used in this research are data collection. The data is used as a basis for calculation of stability and technical planning. From the rainfall data obtained, hydrological analysis resulted in flood discharge plan, which then processed again to find the amount of flood routing which result is used to determine the elevation of crest spillway. Hydrological analysis for dam planning, covering four things, namely: The inflow that fills the dam, flood plans to determine the capacity and dimensions of spillway buildings,  dam count and  outflow to determine the retrieval building. The calculation of flood debit were proceed  using HEC-HMS Program software.Results revealed that Kuwil’s dam  gives a significant impact for Manado city and its surroundings because it can reduce flood. The efficiency of flood control in Manado and the surrounding could be done by setting the operation pattern of the reservoir. Keywords: water damage disaster, flood , dam, HEC-HMS program, efficiency of flood control
MODEL ESTIMASI BIAYA KONTINGENSI BERBASIS RISIKO PADA PROYEK NORMALISASI SUNGAI DI DAERAH PERKOTAAN Peginusa, Stefani Switly; Willar, Debby; Manoppo, Fabian J.
JURNAL ILMIAH MEDIA ENGINEERING Vol 10, No 1 (2020): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Pelaksanaan proyek normalisasi sungai di daerah perkotaan khususnya di Sulawesi Utara tidak lepas dari suatu risiko apakah itu risiko berdampak besar maupun kecil terhadap waktu, sumberdaya dan biaya. Untuk mitigasi hal tersebut biasanya para pelaksana proyek selalu mempersiapkan dana kontingensi. Umumnya, penentuan besarnya presentase biaya kontingensi didasarkan pada intuisi dengan melihat pengalaman-pengalaman masa lalu serta catatan historis kontraktor. Penelitian ini bertujuan untuk mengidentifikasi faktor–faktor risiko apa saja yang sering terjadi pada setiap tahapan proyek dan dampaknya terhadap biaya proyek, dan untuk memodelkan perhitungan biaya kontingensi berbasis risiko pada proyek normalisasi sungai yang ada di daerah perkotaan. Identifikasi risiko diperoleh dari survei pendahuluan dan literatur. Bobot risiko dianalisa dengan Analytic Hierarchy Proces. Aspek risiko dianalisa dengan skala pengukuran Pd T-01-2005-B untuk menentukan tingkat risiko dan kategori risiko. Tahap selanjutnya adalah estimasi presentase biaya kontingensi berdasarkan nilai probabilitas rata-rata yang dihasilkan.Hasil Penelitian menunjukkan bahwa ada pengaruh yang signifikan antara frekuensi kejadian terhadap pengaruh/dampak pada biaya kontingensi. Karena itu perlu mendalami tahapan-tahapan dalam proyek konstruksi sehingga jenis-jenis risiko dapat dikumpulkan secara menyeluruh dengan penanganan yang tepat dan pemodelan estimasi biaya kontingensi berbasis risiko pada penelitian ini dapat menjadi acuan dalam menentukan status risiko pada tiap proyek konstruksi yang akan diteliti. Kata Kunci: Biaya Kontingensi, Analisis Risiko, Model Perhitungan, Normalisasi Sungai
PEMANFAATAN TEKNOLOGI UNMANNED AERIAL VEHICLE (UAV) QUADCOPTER DALAM PEMETAAN DIGITAL (FOTOGRAMETRI) MENGGUNAKAN KERANGKA GROUND CONTROL POINT (GCP) Prayogo, I Putu Harianja; Manoppo, Fabian J.; Lefrandt, Lucia I. R.
JURNAL ILMIAH MEDIA ENGINEERING Vol 10, No 1 (2020): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Pemetaan dengan Unmanned Aerial Vehicle (UAV) merupakan suatu strategi atau cara untuk pemetaan dengan skala besar dengan waktu yang lebih cepat dan efisien dan tentunya kita dapat menghemat waktu dibandingkan dengan menggunakan metode survey konvensional. Ground Control Point (GCP) dibuat untuk meningkatkan akurasi/koreksi geometri dari hasil potret udara drone. Pengamatan titik GCP ini menggunakan GPS Geodetik dengan ketelitian sub millimeter. Pemasangan dan Pengukuran GCP telah diatur standarnya dalam dokumen SNI 19-6724-2002 serta Peraturan Kepala Badan Informasi Geospasial No 6 tahun 2018 tentang Pedoman Teknis Ketelitian Peta Dasar.Penelitian ini bersifat studi lapangan dengan data–data yang dilakukan pada kawasan Universitas Sam Ratulangi Kota Manado. Pengambilan data lapangan menggunakan Unmanned Aerial Vehicle (UAV) Drone untuk foto udara dan GPS Geodetik. Drone diperlukan untuk pengambilan objek kawasan, sedangkan pengukuran Ground Control Point (GCP) menggunakan metode Real-Time Kinematic (RTK).Hasil penelitian yang dilakukan di Kampus Universitas Sam Ratulangi menghasilkan resolusi spasial yakni 4.4 Cm/Pixel. Dari uji akurasi koordinat planimetris hasil pemetaan foto udara didapatkan nilai CE90 sebesar 0,05 m dan nilai LE90 sebesar 0.12 yang berarti bahwa uji akurasi horizontal ketelitian peta memenuhi untuk skala 1:1000 yaitu masuk kedalam orde kelas 1 dengan ketelitian maksimum sebesar 0,3 meter. Report root mean square error (RMSe) untuk ketelitian hasil pengukuran menggunakan unmanned aerial vehicle (UAV) drone menggunakan titik kontrol tanah (GCP) mendapatkan nilai error horizontal sebesar 0.05 m dan vertikal 0.12 m, sedangkan error hasil pengukuran menggunakan unmanned aerial vehicle (UAV) drone tanpa titik kontrol tanah (GCP) mendapatkan nilai error horizontal sebesar 2.54 m dan vertikal 0.78 m. Survey pemetaan menggunaan Unmanned Aerial Vehicle (UAV) jauh lebih cepat dan efisien berbeda dengan metode konvensional. Disamping menghemat waktu dan biaya, luas Unviersitas Sam Ratulangi yaitu 35 Ha dapat diselesaikan dengan waktu ± 3 Jam dibandingkan dengan pengukuran yang dilakukan menggunakan metode konvensional dengan memakan waktu + 2 Hari.Kata kunci: Unmanned Aerial Vehicle (UAV), Ground Control Point (GCP)