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Jurnal Teknik Indonesia
Published by Universitas Darul Ulum Islamic Centre Sudirman
ISSN : 29872723     EISSN : 29870933     DOI : https://doi.org/10.61689/jti
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
Jurnal Teknik Indonesia diterbitkan sejak tahun 2018 oleh segenap civitas akademika Fakultas Teknik, Universitas Darul Ulum Islamic Center Sudirman GUPPI. Jurnal Teknik Indonesia terbit 2 (dua) kali dalam setahun yaitu pada bulan April dan Oktober. Ruang lingkup dari Jurnal Teknik Indonesia berupa hasil penelitian, kajian dan aplikasi di dalam bidang Teknik Sipil seperti: (1) Manajemen konstruksi; (2) Rekayasa struktur; (3) Rekayasa sumber daya air; (4) Rekayasa geoteknik; (5) Rekayasa transportasi.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 55 Documents
 1   2   3   4   5 
Klasifikasi Tanah dan Korelasi Nilai CBR Laboratorium Dengan Nilai CBR Lapangan Dari Uji DCP Tanah Subgrade Pada Proyek Rekonstruksi Ruas Jalan Mirit – Tambakmulyo, Kabupaten Kebumen, Jawa Tengah Fakhri, Khoirudin; Wibowo, Agung Hari
Jurnal Teknik Indonesia Vol 5, No 1 (2024): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v5i1.552

Abstract

Nilai California Bearing Ratio (CBR) telah menjadi standar untuk menguji kapasitas dukung tanah, utamanya tanah subgrade dalam konstruksi jalan raya. Angka CBR yang biasanya dinyatakan dalam presentase bisa didapatkan di Laboratorium (CBR Lab) maupun di Lapangan melalui uji Dynamic Cone Penetrometer. Penelitian ini mengkaji pola hubungan CBR Laboratorium dengan CBR Lapangan hasil uji DCP dari 12 sample tanah yang diperoleh di lokasi penelitian yakni Ruas Jalan Mirit – Tambakmulyo (Kabupaten Kebumen, Jawa Tengah). Sample kemudian dianalisis dengan rumus matematis agar memperoleh persamaan regresi dan nilai korelasi untuk menilai hubungan antar keduanya. Sesuai dengan metode AASHTO tanah di lokasi penelitian dikategorikan dalam jenis tanah A-6 yakni tanah berlempung dengan penilaian umum sebagai tanah subgrade sedang hingga buruk. Untuk metode USCS, kategori tanah paling dominan yaitu CL yakni lempung tidak organik dengan plastisitas rendah hingga sedang, lempung berkerikil, lempung berpasir, hingga lempung berlanau. Berdasarkan hasil perhitungan regresi dan korelasi CBR Lapangan terhadap CBR Laboratorium didapat persamaan y = -0,0614x + 7,1492 dengan koefisien korelasi (r) = -0.1862. Pola korelasi yang diperoleh adalah langsung negatif lemah. Angka koefisien determinasi (R2) = 0,035 menunjukkan akurasi model regresi relatif baik. Penelitian ini memperlihatkan jika nilai CBR Lapangan tidak berpengaruh signifikan terhadap CBR Laboratorium pada lokasi penelitian.
PERENCANAAN BANGUNAN GEDUNG SUPERMARKET KABUPATEN BOYOLALI Kurniawan, Muhamad; Sasi, Windu; Hartopo, Hartopo; Apriyanto, Totok
Jurnal Teknik Indonesia Vol 4, No 2 (2023): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v4i2.488

Abstract

Boyolali is a developing district in Central Java Province. Therefore, many people from outside the area come to Boyolali to do business or develop their businesses. In order for the activities carried out to run well, adequate and supportive facilities are needed, so the construction of a Supermarket Building is planned. The structural planning for the Boyolali district supermarket building is in Siswodipuran, Boyolali District, Boyolali Regency, Central Java. This supermarket building was built to improve MSMEs for people in Boyolali.This building planning was carried out using primary data, such as soil survey data, and supplemented with other secondary data. This structural planning analysis is assisted by the SAP2000 software application for structural modeling and calculating internal forces. The analysis carried out includes: calculation of the roof structure, beams, columns and foundations.From the analysis results, it was obtained that the roof rafter beam was IWF 300.150.6,5.9, CNP purlins 150.50.20.2.3, steel columns IWF 300.150.6,9.9. Block sizes vary from 40x80 cm, 35x70, 30x60, 25x50, blocks measuring 25x40 and 20x30. Column sizes 80x80 cm, 70x70 cm, 60x60 cm. The foundation uses bored piles F2: 1.20x2.20x1.10 m with 2 bored piles measuring 60x60 cm, depth 5.5 m, F4: 2.20x2.20x1.40 m with 4 bored piles measuring 60x60 cm, depth 5.5 m, F6: 2.20x3.20x1.55 m with 6 bored piles measuring 60x60 cm, depth 5.5 m, F8: 2.20x4.20x2.00 m with 8 bored piles measuring 60x60 cm, depth 5.5 m. From the results, each structural element of the building can be categorized as safe.
ANALISIS DERAJAD KONSOLIDASI PADA PERBAIKAN TANAH DENGAN METODE PRE-FABRICATED VERTICAL DRAIN (PVD) PADA PROYEK PEMBANGUNAN JALAN TOL SEMARANG – DEMAK PAKET 2 Ningrum, Hastari Dita; Anassari, Ririn; Hartopo, Hartopo; Apriyanto, Totok
Jurnal Teknik Indonesia Vol 3, No 2 (2022): JEI (Jurnal Engineering Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v3i2.370

Abstract

Soft soil is a type of soil that has low shear strength, small coefficient of permeability, compressibility and low soil bearing capacity. 1-D consolidation theory by Terzaghi (1925), assumes that during the consolidation process the value of the consolidation coefficient (Cv) is constant. Flow is only vertical direction. The analysis carried out is to know magnitude of decline and time required to achieve 90% consolidation. Quantitative data is used to analysis numerical data and calculated using existing formulas. Value of settlement using Terzaghi method and principle of normal consolidation is 1.68834 m. To achieve a degree of consolidation of 90% without PVD is 274350 days with a decrease of 1.5196 m. With triangular pattern PVD installation on distance of 0.9 m is 75 days with a large reduction of 1.523 m. Based on the result, time required to achieve a degree of 90% consolidation using PVD is onliy 75 days, while on same day without using PVD consolidation results are around 0.017%. This shows that PVD can speed up the time required for soil consolidation.
KOMPARASI BEBAN KONSTRUKSI BANGUNAN KONVENSIONAL (SEDERHANA) DAN BANGUNAN NON KONVENSIONAL, STUDI KASUS BANGUNAN SATU LANTAI Abdullah, Abdullah; Risna, Nevy
Jurnal Teknik Indonesia Vol 3, No 1 (2022): JEI (Jurnal Engineering Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v3i1.359

Abstract

Many people use new building materials but are guided by old materials, which are actually a lot different. The purpose of this study is to calculate the ratio between dead loads on buildings with conventional (simple) structures and dead loads on buildings with non-conventional structures. This knowledge is important as a basis for calculating building structures. The object of this research is the building model as the basis for calculating the volume of materials. For this model, a simple building design is made with two different structural designs. The first is with a conventional structural design, namely a structure that is commonly used in society, while the second design uses a non-conventional structure, namely a structure that is often used in modern buildings, using the latest materials and construction. Calculation of construction loads using the unit weight of materials obtained from building materials brochures, or also standards that are already available from the literature, and if it is difficult to find standards or brochures, direct measurements are carried out, namely by weighing the materials to be measured. From the calculation results, the total construction weight in simple buildings is 124.299 Kg, while in non-conventional buildings it is 74,392 Kg. The conclusion is that the weight of simple building construction is 1.67 times heavier than the weight of non-conventional building construction.Keywords: comparison, construction, building
STUDI KOMPARASI KAPASITAS DUKUNG RENCANA DAN KAPASITAS DUKUNG AKTUAL FONDASI TIANG PANCANG PADA KONSTRUKSI SLAB ON PILE JALAN TOL SEMARANG – DEMAK SEKSI 2 Wibowo, Agung Hari; Sulardjaka, Sulardjaka; Silviana, Silviana
Jurnal Teknik Indonesia Vol 5, No 1 (2024): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v5i1.545

Abstract

Semarang - Demak Toll Road Section 2 with a length of 16.31 km crosses the North Coast of Java. The regional geological map shows that the North Coast of Java has alluvial soil layers with clay and silt characteristics. The results of soil investigations show that the depth of the soft layer reaches more than 60 m. This condition triggers construction engineering to support the Highway above it. One of the efforts to fulfill the elevation plan (finish grade) is the flyover concept with slab on pile construction. The planned traffic lane is laid on a concrete slab which is supported by piles with a diameter of 600 mm. With sufficiently deep soft soil layers, the bearing capacity of the foundation piles is borne by the frictional resistance provided by the soil along the piles. This comparative study compares the planned carrying capacity calculated by the empirical formula with the actual carrying capacity of the field as a result of the PDA Test. Calculations were made on 5 test poles for later comparisons were made with the PDA test record data. For the case of 14 days driving at the research location, the pile bearing capacity from the PDA test results is still below the design bearing capacity. The average actual carrying capacity obtained from the 5 test piles is 278 tons. This value is below the planned carrying capacity of the Shio & Fukui method of 381 tons, Meyerhoff's 355 tons, Biaud et al's 777 tons, and Luciano Decourt's 605 tons. At the age of the pile 14 days after the erection was completed, the results of the calculation of the bearing capacity of the Meyerhoff method are closest to the actual bearing capacity of the PDA test results with a ratio of 1.26. The next method is Shio & Fukui with a ratio of 1.36, Luciano Decourt (2.16), and Biaud et al (2.81). Some of the results of previous studies showed a positive correlation between the age after completion of the pile and the frictional carrying capacity. For this type of friction pile, this is of course very influential, so that it is possible that when it is realized that it is carried out with a longer service life, the actual bearing capacity obtained will increase. This requires further research to obtain a time relationship with an increase in pile bearing capacity, especially for locations that have deep soft soil layers such as in this study location.
ANALISIS EVALUASI RENCANA DAN PENGENDALIAN JUMLAH PENGGUNAAN ANGGARAN BIAYA PELAKSANAAN PROYEK PEMBANGUNAN GEDUNG KANTOR PELAYANAN MASYARAKAT DINAS BINA MARGA DAN CIPTA KARYA PROV. JATENG Mahfud, Ari; Rosdiana, Dina Citra; Hartopo, Hartopo; Apriyanto, Totok
Jurnal Teknik Indonesia Vol 4, No 1 (2023): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v4i1.417

Abstract

The Construction Project for the Public Service Office Building for the Highways and Human Settlements Office of Central Java Province is carried out from February to October 2021, with total contract value of Rp. 8,313,888,968. This project using planning and controlling time and costs so that later work will be more efficient, according to plans and objectives. The purpose of this study is to determine the time performance of the Development Project, to find out the problems encountered in the implementation of the Project, as well as the solutions used to overcome the problems that arise. The method used in this study is the Earned Value Concept method in which it combines elements of schedule, cost, and work performance to calculate the estimated cost and time needed to complete the project to completion. The data obtained from the Project includes the Budget Plan (RAB), Project Work Schedule, Daily, Weekly, Monthly Reports and actual cost requirements. Furthermore, an analysis of costs, schedules, and work performance is carried out by explaining the problems that arise during the research. From the results of the research and analysis it is known that the total costs incurred are relatively the same as the budget that has been planned, this is indicated by the results of CV = 1 and the project implementation time has been delayed from the planned schedule, indicated by the results of SPI = 6.6883 The results of calculating an estimated cost of Rp. 8,313,888,968 with an estimated completion time of 36 weeks which indicates a delay of 1 week from the planned 35 weeks. Where this delay was caused by several factors such as weather conditions which were in the rainy season when the project was running, damage or inadequate tools.
ANALISIS REVIEW JUMLAH TIANG PANCANG (STUDI KASUS PERBEDAAN KEDALAMAN TIANG ANTARA DESIGN DAN PELAKSANAAN) Sejati, Teguh Imam; Hastopo, Topo
Jurnal Teknik Indonesia Vol 3, No 1 (2022): JEI (Jurnal Engineering Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v3i1.364

Abstract

Planning a civil construction cannot be separated from the criteria of safe and economical. Each foundation is required to be able to support the load to the safety limits that has been planned, including supporting the maximum load that may occur. Analysis of the support capacity of the foundation is carried out by paying attention to soil investigation data, the load carried by the foundation, the dimensions of the pile, the distance between the piles and the depth of the pile.In this research, the pile foundation used depth variations to determine the capacity of the pile in withstanding the load of the structure on it. The depth to be analyzed consists of 2 alternative variations, they are 25 meters and 17 meters which is carried out at four locations. The purpose of this study is to find out the bearing capacity comparison of pile foundation based on its depth.The results of the analysis of bearing capacity of the pole group at a depth of 25 m were obtained at each point, amounting to 20019.5 kN at point A1, 25166.3 kN at point P1, 20019.5 kN at points A2 and 25166.2 at points P2. While at a depth of 17 m obtained at each point of 12822.7 kN at point A1, 15321.2 kN at point P1, 10915.1 kN at point A2 and 14864.7 kN at point P2.Keywords: Pile foundation, Bearing capacity, Depth
STUDI ANALISIS PENANGANAN LONGSOR PADA SLOPE TIMBUNAN YANG TEGAK (STUDI KASUS LONGSORAN DI JALAN TOL RUAS SEMARANG – BAWEN KM 426+600) Ade Gunawan
JTI (Jurnal Teknik Indonesia) Vol 1, No 2 (2020): JEI (Jurnal Engineering Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

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

Abstract

Heavy rains that flushed most of the Semarang area have resulted in the slope on the edge of the Semarang - Bawen STA.426 + 600 toll road experiencing landslides and eroding part of the shoulder of the road. A slope stability analysis is needed to determine the slope safety factor at the research location which can model it according to the original conditions in the field so that there is an approach condition in the analysis results and makes it easier to model its handling, one of which is by using manual formulas.In this analysis, the input data for soil parameters were used, including: cohesion, c; angle of shear in soil, 𝜑; slope angle, 𝛼; and soil volume weight, 𝛾. From the results of the analysis of slope stability with cantilever wall reinforcement, it is considered safe because the foundation soil stress that occurs is smaller than the allowable stress of the soil, namely (664,556 <1496,219) for normal conditions and (464,951 <1496,219) for earthquake conditions. SF to shear under normal conditions is greater than the required SF (3,738> 1,5). SF to shear earthquake conditions is greater than the required SF (3.036> 1.2). The SF against rolling under normal conditions is greater than the required SF (2,068> 2). SF against rolling earthquake conditions greater than the required SF (1.912> 1.5).Keywords: Semarang - bawen toll road, landslides, slope analysis
Analisa Stabilitas Lereng Bendungan Jragung Kabupaten Semarang Menggunakan Aplikasi Geostudio 2022.1 Nugroho, Ilham Pramono
Jurnal Teknik Indonesia Vol 5, No 1 (2024): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v5i1.550

Abstract

Dalam pembangunan bendungan urugan aspek keamanan menjadi hal yang mutlak. Stabilitas lereng dan rembesan perlu diperhatikan pada bendungan. Bendungan Jragung diproyeksikan memiliki kapasitas 90 juta m3 dengan tinggi 59,5 m dan tergolong dalam klasifikasi IV (extreme) atau jika terjadi kegagalan memiliki risiko bahaya yang tinggi. Maka dari itu, guna pencegahan dini terhadap risiko bahaya bendungan perlu dilakukan serangkaian analisa diantaranya stabilitas lereng dan rembesan. Analisa dilakukan dengan data berupa data geoteknik (parameter material timbunan), data hidrologi (ketinggian muka air), data detail engineering design (gambar potongan dan detail bendungan). Analisa memakai metode keseimbangan batas menggunakan program Slope/W perangkat lunak Geostudio 2022.1. Analisa stabilitas lereng dilakukan untuk mengetahui nilai safety factor (SF) dalam tiga kondisi dengan beban normal dan gempa, meliputi after construction, steady flow, dan rapid drawdown. Sedangkan analisa terhadap bahaya rembesan dilakukan dengan menghitung debit rembesan dan pengamatan garis freatik menggunakan program Seep/W perangkat lunak Geostudio 2022.1. Dari hasil analisa stabilitas lereng dengan beban normal dan gempa Operating Base Earthquake (OBE) nilai SF memenuhi syarat minimum. Sedangkan hasil analisa rembesan diperoleh debit rembesan tidak melebihi batas minimum dan garis freatik tidak keluar dari jalur drainase serta tidak memotong tubuh bendungan
STUDI KOMPARASI KAPASITAS AXIAL BORED PILE DENGAN BERBAGAI FORMULA PADA PEMBANGUNAN SD ISLAM MAKARIMA KARTASURA Aprilia, Dwi Ayu; Wati, Sri Endang Wijaya Listiya; Hartopo, Hartopo; Apriyanto, Totok
Jurnal Teknik Indonesia Vol 4, No 2 (2023): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v4i2.489

Abstract

The foundation is part of an engineering system that transmits the load supported by the foundation and its weight to and into the soil and rocks beneath it (Bowles, 1997). The Makarima Islamic Elementary School construction project was built using a 40 cm bored pile foundation. This study aims to determine the axial load transmitted to the foundation using SAP 2000 analysis and to determine the comparison of the foundation's bearing capacity based on the Sondir Test or CPT (Cone Penetration Test) data using various methods, namely based on the Mayerhoff, Schmertmann and Nottingham, and Aoki De Alencer methods. From the results of the SAP 2000 analysis, the axial force value was 162.7823 tons. From the Sondir data, the results of calculating the carrying capacity of a single pile foundation using the Meyerhoff method were 59.68 tons, the Aoki De Alencer method was 39.61 tons, and the Schmertman and Nottingham method was 43.54 tons, while the results of calculating the carrying capacity of the foundation group the Meyerhoff method was 256.89 tons, the Aoki De Alencer method was 170.5 tons, and the Schmeretman and Nottingham method was 187.43 tons. From the results of these calculations, the foundation is safe to use.

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