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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 25 Documents
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Search results for , issue "Vol. 9 No. 1 (2025)" : 25 Documents clear
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.
Analysis Analisis Daya Serap Air Paving Block Plastik Polypropylene Ikram, Muhammad Fadhli Dzil; Utomo, Gunaedy; Indriani, Andi Marini
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.v9i1.17592

Abstract

Plastic waste in Balikpapan City accounts for 17% of the city's total waste production, ranking third after organic and paper waste. One category of waste that has received national and global attention is plastic waste. Plastic waste itself is difficult to decompose naturally and takes years, if the accumulation of plastic waste is allowed to drag on, it will cause many problems, such as disease and environmental pollution. Therefore, it is necessary to utilise plastic as one of the technological innovations in the field of construction, where this plastic can be used as a mixture in making paving. In this study, PP plastic was used as a substitute for cement in paving blocks. The purpose of this research is to assess whether paving blocks using a mixture of PP plastic and sand can fulfil the water absorption requirements according to SNI 03-0691-1996. The mixture used between PP plastic and sand is 10%, 30%, 50% with diamond shape with plastic melting temperature of 240○C. The absorption of paving blocks by utilising polypropylene plastic as a substitute for cement decreased as the percentage of PP plastic increased. The absorption of 10% plastic variation of the diamond meets quality B because it obtained an absorption value of 4.34%. While the addition of 30% and 50% plastic obtained a value below 3% which means it meets quality A in SNI 03-0691 (1996).
Analisa Debit Banjir Rencana DAS Rejoso Menggunakan Metode Hidrograf Satuan Sintetik Nakayasu Arifin, Zainal; Maulidiyah, Afrikhatul
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.v9i1.17597

Abstract

Flood is an event where water overflows in a river beyond its capacity. Several areas in Indonesia, especially Pasuruan Regency, often experience flooding, one of which is the Rejoso Watershed which often experiences flooding every year. Therefore, efforts need to be made to immediately minimize the occurrence of flood disasters. By planning water structures, planned flood discharge data is needed as a basis for planning the dimensions and stability of water structures. In this study, the hydrological analysis begins by calculating the average rainfall in the area using the Thieseen polygon method, the analysis of return period rainfall using the Gumbel method which is tested using the chi-square method, then the analysis of rainfall intensity using the Mononobe method, and the hydrograph analysis using the HSS Nakaysu method. The results of the study stated that the peak discharge of the Rejoso Watershed for return periods of 2, 5, and 10 years, respectively, was 769.32 m3/sec; 971.62 m3/sec and 1116.96 m3/sec. In the period of 25, 50 and 100 years respectively, namely 1274.80 m3/sec; 1400.35 m3/sec and 1524.97 m3/sec. The planned flood discharge of the Rejoso watershed began to experience an increase in the curve at hour 0 to hour 2. While the peak discharge occurred at hour 2. At hour 3, the flood discharge of the Rejoso watershed began to experience a decrease in the curve until hour 13.
Studi Perbandingan Hidrograf Satuan Sintetik pada Daerah Aliran Sungai Ciherang Rahman, Fatchur; Nurudin, Fuad Ardian; Laksmi, Anasya Arsita
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.v9i1.17650

Abstract

This study focuses on the hydrological analysis of the Ciherang Watershed using four Synthetic Unit Hydrograph (SUH) methods: Snyder-Alexeyev, Nakayasu, ITB-1, and ITB-2. Each method was applied to determine their effectiveness in predicting flood hydrographs based on the watershed's physical characteristics and rainfall data from 2013 to 2023. The results indicate that the Snyder-Alexeyev method produced a rise time of 4.43 hours, a recession time of 20.17 hours, and a peak discharge of 1.627 m³/s. The Nakayasu method, with the fastest rise time of 2.049 hours and a recession time of 20.49 hours, generated the highest peak discharge at 2.523 m³/s. The ITB-1 method showed a rise time of 2.951 hours, a recession time of 29.512 hours, and a peak discharge of 1.895 m³/s. The ITB-2 method resulted in a rise time of 2.049 hours, a recession time of 20.49 hours, and a peak discharge of 1.891 m³/s. Among the methods, Nakayasu and ITB-2 demonstrated the quickest response, with Nakayasu yielding the highest peak discharge. These findings provide essential insights for flood management and infrastructure planning in the Ciherang Watershed and similar regions.

Page 3 of 3 | Total Record : 25

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