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Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil
Published by Universitas Ibn Khaldun Bogor
ISSN : 35132615     EISSN : 2655934X     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil adalah jurnal yang mempublikasikan hasil-hasil penelitian, ulasan ilmiah, teori dan aplikasi serta informasi lain di bidang ilmu pengetahuan, teknologi, dan sains (IPTekS), terutama teknik sipil, lingkungan, dan perencanaan wilayah-kota.Jurnal Komposit terbit dua kali dalam setahun. Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil is a journal that publishes research results, scientific reviews, theory and applications as well as other information in the fields of science, technology and science (IPTekS), especially civil engineering, environment, and urban planning. Jurnal komposit issued biannually. Articles to be published in the Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil are compiled from articles prepared by the author(s) and sent to the editorial board of Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Departement of Civil Engineering, Faculty of Engineering and Science, Universitas Ibn Khaldun Bogor. Articles should be written in English or Bahasa Indonesia. Research scope in general is civil engineering and environmental engineering study.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 208 Documents
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Perbandingan Nilai Karakteristik Marshall untuk Campuran HRS-WC Menggunakan Material dari Sungai Inbate dan Sungai Bijaesahan Bela, Krisantos Ria
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.16663

Abstract

Asphalt concrete has become the primary choice for road construction in Indonesia due to its elastic properties suitable for tropical regions. Hot Rolled Sheet-Wearing Course (HRS-WC), as one type of flexible pavement, plays a crucial role in supporting traffic from light to heavy loads. The objective of this study is to compare the Marshall characteristics of HRS-WC mixtures using materials from Inbate river and Bijaesahan river in the East Nusa Tenggara Province. The research method involved testing the material characteristics, mixing HRS-WC, and conducting Marshall method testing. The results indicate that the material from Inbate river exhibits better performance in stability and flexibility compared to material from Bijaesahan river. At the optimum asphalt content of 6.93%, the stability of Inbate river material was 1199.31 Kg, whereas Bijaesahan river was 957.68 Kg. Additionally, the flow of Inbate river material was 4.67 mm, while Bijaesahan river was 3.40 mm. Similar results were observed at the optimum asphalt content of 7.28%, with Inbate river showing stability of 1179.59 Kg and Bijaesahan river 944.16 Kg. The flow of Inbate river material was 4.84 mm, whereas Bijaesahan river was 3.48 mm. These findings demonstrate that material from Inbate river outperforms in stability and flexibility.
Efek Penambahan Serat Polypropylene terhadap Kuat Tarik Belah Beton Ringan Sultan, Mufti Amir; Hi Bayan, Ilman Nafiyanto A; Gaus, Abdul; Saputra, Muhammad Taufik Yuda; Irnawaty, Irnawaty
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17098

Abstract

Lightweight concrete is concrete weighing less than 1840 kg/m³. Lightweight concrete tends to have a low tensile strength, and due to the characteristics of the lightweight aggregate used, in planning the concrete mixture, fiber is added to increase the tensile strength of the lightweight concrete itself.  This study analyzes the effect of adding polypropylene fiber to lightweight concrete mixtures with volume levels of 0.1 kg/m³, 0.3 kg/m³, 0.5 kg/m³ and 0.7 kg/m³. The number of 15x30 cm cylindrical specimens was 15 pieces for the split tensile strength test. The test uses a compression tester, where the cylindrical specimen is placed horizontally and then loaded to the maximum acceptable load. The results showed that adding polypropylene fiber to lightweight concrete increased the split tensile strength along with the addition of various polypropylene fibers up to 0.5 kg/m³. After exceeding 0.5 kg/m³, the split tensile strength decreased. The maximum split tensile strength value is 21.64 kg/cm2 at a 0.5 kg/m³ volume polypropylene fiber. The workability of fiber concrete tends to decrease with the addition of polypropylene fiber into the lightweight concrete mixture. The maximum volume weight produced is 1471 kg/m3, categorized as lightweight concrete.
Kajian Kebutuhan Irigasi Sawah di Lapangan Daerah Irigasi Cihea Kabupaten Cianjur Sutoyo, Sutoyo; Purwanto, M. Y. J.; Arif, Chusnul; Saptomo, S. K.; Heryansyah, Arien
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17264

Abstract

Indonesia is known as an agricultural country because most of its people cultivate rice in rice fields. BPS through the area survey framework (KSA) stated that the total harvest area in 2022 was 10.45 million hectares. This large area is very likely to cause inefficient water use in rice cultivation considering that most of the cultivation is carried out by inundation. Measurement of irrigation water needs in rice fields has been carried out mostly in the analysis stage, no detailed measurements have been found in evaluating irrigation water needs in rice fields. Evaluating the need for irrigation water in rice fields can easily be done with a water balance approach that considers all aspects of both incoming and outgoing water. This study aims to examine the components of irrigation water needs in the land preparation period. The study was conducted on rice plots equipped with several measuring instruments. Measuring water discharge in and out using CTF, weather data using AWS, and percolation measurements in the field. Measurement of water demand in rice fields on the plot resulted in a total inflow value of 195.38 mm and rainfall of 40.40mm. The total value of evapotranspiration occurred was 104.11 mm, the percolation value was 54.00 mm and the discharge out value was 29.59 mm, so the water loss was 48.08 mm (24.61%)
Implementasi Building Information Modeling (BIM) 5D Pada Proyek Konstruksi (Studi Kasus Pada Proyek Pembangunan Resto Manggar) Jaya, Liem Ruwady Pratama; Hendriyani, Irna; Pratiwi, Reno
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17282

Abstract

With the increasing development of the AEC (Architecture, Engineering and Construction) industry in the current era, there is a lot of software being developed for the needs of the construction industry which aims to minimize human error due to conventional data processing. This research aims to analyze the results of volume and cost comparisons using the 5D Building Information Modeling (BIM) concept with the consultant method on the Resto Manggar Balikpapan Timur construction project. By using Revit, the 2D image obtained from the consultant is modeled again in 3D form where the volume requirements for structural work become more detailed. We can see from the consultant's calculation that the weight is 11,0881.42 kg from the Autodesk Revit software, it is 10,382.58 kg and has a difference of 698.84 kg or 6 %, for the concrete volume results from the consultant of 132.30 m3, the Autodesk Revit software has a volume of 127.01 m3 and has a difference of 5.29 m3 or 4%. To calculate costs for structural work from the consultant, it is IDR. 193,025,200.89 from Autodesk Revit software has a cost of Rp. 181,502,892.27 which has a cost difference of Rp. 11,522,308.62 or 6%, for the calculation of concrete costs by the consultant of Rp. 203,773,342.67 from Autodesk Revit software amounting to Rp. 195,402,397.86 and has a difference in concrete costs of Rp. 8,370,944.81 or 4%. By using the 3D BIM concept supported by Revit software which is able to provide detailed material takeoff results thereby reducing wasted material and supporting the 5D BIM concept to support cost estimation calculations.
Implementasi Building Information Modelling (BIM) 5D pada Pekerjaan Kost 2 Lantai Tipe 600 Rajagukguk, Fanji Fauzi; Hendriyani, Irna; Pratiwi, Reno
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17318

Abstract

Technological advances in the world of construction have brought many benefits, especially in building pomodeling, scheduling, cost estimation, volume changes, building continuity, and building management. A widely used technology is Building Information Modeling (BIM). Accurately estimating construction costs is essential to obtain efficient values during planning. In calculating the cost of construction projects, conventional methods are still often used, resulting in increased costs. Therefore, this research will use the concept of Building Information Modeling (BIM) 5D which aims to analyze the volume and cost estimates, as well as analyze the difference in volume and cost between the BIM method and the Consultant's calculations on the structural work of the construction of the 2-storey boarding house Sepinggan Baru 1. The results showed that the structural work of the construction of the 2-storey boarding house Sepinggan Baru 1 with the Bim 5D concept had a volume of ironwork of 23305.48 kg at a cost of Rp 421.992.326,4, and a concrete volume of 109.05 at a cost of Rp 215,386,847.00. The difference in iron volume is 17,3% while the difference in concrete volume is 0.84%. This means that the calculation using the 5D Building Information Modeling (BIM) concept with the help of Autodesk Revit Software is lower than the cost planning produced by the consultant.
Studi Perbandingan Biaya pada Pekerjaan Pembongkaran Balok Girder di Proyek Penggantian Jembatan Cinagara Suhendar, Tatang; Mardiaman, Mardiaman; Azhar, Moh; Taqwa, Fadhila Muhammad Libasut
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17332

Abstract

There are 3 (three) alternative methods for dismantling bridge girders in the Cinagara Bridge replacement project, to find the most efficient and safe approach. The Cinagara Bridge, which is on the Ciawi – Sukabumi national road, Caringin district, Bogor Regency, located in a densely populated area and also close to the installation of the PGN pipeline network and PLN cable lines. This research aims to choose the implementation method with the most efficient costs, while still paying attention to safety and ease of work. The three alternative methods are: dismantling by lifting and moving the girder beam as a whole; dismantling by lifting the girder beam as a whole, then moving it segment by segment; and dismantling by breaking the girder beams on the spot and dropping them into the river, to be then moved outside the site. The research results show that the third method, namely breaking the girder beam on the spot and dropping it into the river, has the lowest implementation cost of IDR 86,637,250.00 and efficient implementation time. This method also ensures that the demolition results can be mobilized outside the project site and has the lowest risk of accidents. The first and second methods cost IDR 365,762,935.00 and IDR 170,301,233.00 respectively, and face various technical challenges and social risks. This research provides recommendations for using the third method with appropriate adjustments to ensure a smooth dismantling process, minimize environmental impacts, and maximize work safety. Apart from that, it is important to carry out routine equipment inspections, arrange demolition times during the day, and install safety nets to protect the surrounding area from demolition debris. Thus, this research can be a reference in choosing an effective demolition method for similar projects
Studi Pemodelan Gedung Laboratorium Teknik Elektro Universitas Ibn Khaldun Bogor Berdasarkan Kapasitas Ruang dan Beban Lutfi, Muhamad; Chayati, Nurul; Afrilia, Sintiya; Insan, Muhammad Khaerul; Wicaksono, Muhamad Hasan
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17333

Abstract

The Electrical Engineering Laboratory Building was built in 2017 with an existing building area of 120 m2, which is projected to serve 180 students. Based on the National Education Standards Agency (BSNP) in 2011 concerning the Draft Standards for Higher Education Facilities and Infrastructure for Postgraduate and Professional Programs states that the capacity of the lecture hall area is 2 m2 / student so that the basic building area is around 360 m2. The research objectives are to analyze the design and structure of the building regarding the capacity of the rooms and the loads that will act as well as to design and re-plan the building structure based on BSNP 2011 and SNI 1729-2020. The method used is primary data collection by direct measurement of the existing building, then analyzing the existing and planned structures with the DFBT / LRFD method using the ETABS V.21.0 application. The results of the analysis of space capacity, there are two rooms that are insufficient, which are classrooms and meeting rooms, so a new classroom is added on the second floor with an area of 40 m2 and an enlargement of the meeting room area to 50 m2. The results of the structural analysis of the existing building show failures in column sections C-48, C-51, C-50, C-43, C-38, C-33, C-28, C-66, C-26, C-20, C-11, C-3, C-45, C-41, C-35, C-30, C-31, and beam sections B-27, B-3. The results of the analysis of the planned structure using the WF 400.200.8.13 profile and the first floor beam structure elements using the WF 250.125.6.9 profile while the beam structure on the roof floor uses the WF 200.100.5.5.8 profile, the modeling analysis on the planned structure is declared safe against external forces on the building, and no structural elements have failed. The cost budget plan is calculated based on the 2021 Work Unit Price Analysis is IDR 1,547,000,000.00.
Analisis Stratifikasi dan Klasifikasi Tanah dengan Variasi Metode Grafik pada Uji CPT (Cone Penetration Test) Saputra, Hendra
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17460

Abstract

Soil investigation is an important phase in geotechnical engineering design and planning, as it determines soil stratification and technical characteristics. This study investigates the classification of soils in Indonesia using the Cone Penetration Test (CPT) and several interpretation approaches. The investigation employed graphs of the association between conus resistance (qc), local shear resistance (fs), and shear banding number (Rf), with changes based on recent research. The study was carried out at eight separate locations to a depth of 25 meters in Cikidang Village, West Java. At a depth of 0 to 15 meters, the findings graphically demonstrate the domination of clay with a firm to very stiff consistency, and at a depth of 15 to 25 meters, the dominance of sand. The Terzaghi and Lunne techniques define soil as silt. This variation in interpretation necessitates comparing the results of additional tests. Furthermore, the test equipment in these procedures does not include CPTs or manual sondirs, which are widespread in Indonesia. The findings are intended to improve understanding of soil classification and serve as a valuable reference for foundation design and planning in Indonesia.
The Effectiveness of Structural Mitigation to Flood Disaster Reduction in Tebet, Matraman, and Jatinegara Sub-District of Jakarta City Kesuma, Tri Nugraha Adi; Kusuma, Muhammad Syahril Badri; Farid, Mohammad; Kuntoro, Arno Adi; Rahayu, Harkunti Pertiwi
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17486

Abstract

Floods are the dominant color of the interaction of human activities and natural mechanisms that occur every year in the city of Jakarta. Various efforts have been made to reduce flooding in Jakarta, but flooding is still the dominant color, especially on the banks of the Ciliwung River. On the banks of the Ciliwung River, Tebet, Matraman and Jatinegara sub-districts are the three areas that experienced the most severe overflows of the Ciliwung River. Flood mitigation efforts in these three areas have been carried out in the form of increasing the drainage capacity of the Manggarai Gate and normalizing the river in the form of dredging and construction of embankments. However, this effort is not optimal because the implementation of normalization is hampered by social conflicts. This paper discusses mitigation efforts in the form of normalization and combination with retention ponds which are carried out by simulating flooded areas. Completion of the normalization of the Ciliwung River is not the best solution to deal with flooding in Jakarta. The flood volume which usually occupies the flood area flows quickly due to changes in the geometry of the river and causes changes in the hydrograph peak and causes flooding in the downstream part of the study area causing an increase in inundation area in Manggarai up to 200%. On the other hand, the use of retention/storage ponds on limited land has been able to reduce flood inundation by 10%. Therefore, staging in the planning and construction of flood mitigation infrastructure needs to be considered and planned thoroughly.
Analisis Faktor yang Mempengaruhi Produktivitas Tenaga Kerja dengan Fuzzy AHP pada Proyek Bantalan Beton Divre IV Tanjungkarang Putri, Wanda Noor Amalia; Usman, Kristianto; Siregar, Amril Ma’ruf
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17563

Abstract

Economic growth in a country can be reflected by the number of construction projects. To achieve robust economic growth, effective human resource management is required to enhance productivity. One aspect that affects work productivity is the labor force. This research aims to analyze the factors and tasks that influence labor productivity in Concrete Bearing Replacement Projects. Given the many factors or criteria to consider, the Fuzzy Analytical Hierarchy Process (Fuzzy AHP) method is used for identification. The Fuzzy AHP method assists in evaluating various criteria and determining the relative weights of each factor to make informed decisions. To simplify the analysis, 4 criteria and 12 sub-criteria are used. Based on the analysis, the factor with the greatest impact on labor productivity is the work area (K2-1) with a weight of 0.1327, while the factor with the lowest weight is the accuracy of material delivery to the location (A2) with a weight of 0.0442. The tasks that relatively impact labor productivity include loading and unloading concrete bearings (A3) with a weight of 0.0029, replacing concrete bearings with a weight value of 0.0026, and the lowest impact tasks are dismantling gongsol and revising curves, with a weight value of 0.0022.

Page 18 of 21 | Total Record : 208

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