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Contact Name
Sudarno P Tampubolon
Contact Email
Sudarno.Tampubolon@uki.ac.id
Phone
+6281314701858
Journal Mail Official
ukiejournal@gmail.com
Editorial Address
Sekretariat Prodi Teknik Sipil Fakultas Teknik UKI Jl. Mayjen Sutoyo No.2 Cawang Jakarta Timur 13630
Location
Kota adm. jakarta timur,
Dki jakarta
INDONESIA
Jurnal Rekayasa Teknik Sipil dan Lingkungan
ISSN : 27223442     EISSN : 27220230     DOI : DOI: https://doi.org/10.33541/cen
Jurnal CENTECH pertama kali diterbitkan pada bulan April 2020 melalui penerbit UKI Press dengan nama Jurnal Rekayasa Teknik Sipil dan Lingkungan CENTECH. Jurnal ini dikelola oleh Program Studi Teknik Sipil UKI yang dimaksudkan untuk mempublikasikan karya-karya penelitian dosen, alumni, dan praktisi serta peneliti di luar UKI. Jurnal ini memuat artikel-artikel penelitian yang berfokus pada bidang Manajemen Konstruksi, Geoteknik, Rekayasa Struktur, Rekayasa Transportasi, Manajemen Sumber Daya Air serta Rekayasa Lingkungan. Jurnal CENTECH diterbitkan secara berkala dua kali dalam setahun, yaitu April dan Oktober, dimana terbitan perdana adalah pada bulan April 2020. Untuk peningkatan kualitas jurnal maka Prodi Teknik Sipil UKI menerbitkan jurnal ini secara online sehingga dapat mengajukan akreditasi jurnal dalam waktu dekat.
Articles 86 Documents
EVALUASI TEKNIS STRUKTUR RUMAH PANGGUNG TOMBASIAN MINAHASA TERHADAP BEBAN GEMPA SESUAI DENGAN STANDAR NASIONAL INDONESIA (SNI) 1726-2019 Amalia Nurhajayanti Tawary; Djoni Agustaf; Nicky Rampengan
Jurnal Rekayasa Teknik Sipil dan Lingkungan - CENTECH Vol. 6 No. 1 (2025): Jurnal Rekayasa Teknik Sipil dan Lingkungan, April 2025, ISSN 2722-0230 (Online
Publisher : UKI Press

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Abstract

The Tombasian stage house uses cempaka wood, and during an earthquake the Tombasian stage house will shift slightly without damage to its parts. The purpose of this study is to analyze how the behavior of the Tombasian stage house structure against earthquake loads, so that whether it can be said that the Tombasian stage house structure meets the requirements of strength and stability and meets the requirements in accordance with SNI 7973-2013. This research uses the ultimate value research method of structural analysis by analyzing the reaction of the structure to the working load and evaluating the strength of the structure. The analysis uses Structural Analysis Application software and Microsoft Excel.  Earthquake load analysis using the dynamic spectrum response method. Cempaka wood material with a specific gravity of 530 kg/m3 and a modulus of elasticity of 8894.63 Mpa. The results of the ultimate internal forces from the structural analysis application show that the ultimate pressure is smaller than the nominal pressure calculated using the LRFD method. Buckling occurs when the ultimate pressure acts. The ultimate bending moment and ultimate shear force are less than the nominal bending moment and nominal shear force. And the deflection also complies, because it is smaller than the allowable deflection. So it can be said that all structural elements are declared safe, meet the requirements of strength and stability.   Keywords: Stage house, structural evaluation, timber structure, earthquake force, spectrum response, LRFD  
ANALISIS PERENCANAAN LAPIS TAMBAH PERKERASAN JALAN KAIYA – MAELANG PROVINSI SULAWESI UTARA Muhammad Aidil; Andi Sulfanita
Jurnal Rekayasa Teknik Sipil dan Lingkungan - CENTECH Vol. 7 No. 1 (2026): Vol. 7 No. 1 (2026): Jurnal Rekayasa Teknik Sipil dan Lingkungan, APRIL 2026, I
Publisher : UKI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/cen.v7i1.8006

Abstract

The increase in traffic volume, particularly heavy vehicles, can reduce the structural performance of road pavements, making appropriate maintenance measures necessary to maintain road serviceability. The Kaiya–Maelang Road section in North Sulawesi is part of the main Trans Sulawesi corridor and plays an important role in supporting community mobility and goods distribution. This study aims to analyze the required overlay thickness on the Kaiya–Maelang Road section to maintain pavement structural performance throughout its design life. The research employed a quantitative approach using pavement rebound deflection data obtained from Benkelman Beam testing at Stations 7+000 to 9+000 and average daily traffic (ADT) data. Overlay thickness was analyzed based on the 2024 Road Pavement Design Manual (MDP 2024) by considering maximum deflection, deflection curvature, and planned traffic loading expressed as Cumulative Equivalent Standard Axle (CESA). The results showed that the traffic volume of 13,982 vehicles per day with an annual growth rate of 4.75% produced a CESA value of 8.11 million for a 10-year design life. The maximum deflection value was 0.817 mm, while the adjusted Falling Weight Deflectometer (FWD) deflection value was 0.488 mm. Although no indication of permanent deformation was identified, fatigue cracking analysis indicated the need for overlay treatment. The analysis concluded that a total overlay thickness of 150 mm is required, consisting of a 70 mm Asphalt Concrete–Wearing Course (AC-WC) layer and an 80 mm Asphalt Concrete–Binder Course (AC-BC) layer. This overlay thickness is considered adequate to maintain the structural performance of the pavement throughout the design life. Keywords: Planning analysis; Overlay; Road paving.
ELEMEN NATURE IN THE SPACE PADA BANGUNAN WORK HUB DI CEMPAKA PUTIH, JAKARTA PUSAT Amadea Gita Larasati Baginda; Uras Siahaan; Sally S. Napitupulu
Jurnal Rekayasa Teknik Sipil dan Lingkungan - CENTECH Vol. 7 No. 1 (2026): Vol. 7 No. 1 (2026): Jurnal Rekayasa Teknik Sipil dan Lingkungan, APRIL 2026, I
Publisher : UKI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/cen.v7i1.6972

Abstract

ABSTRACT Nowadays, people tend to work remotely, so they don't need large offices. Conventional offices tend to be too formal and stressful, making workers unable to work optimally. In addition, these offices are usually centralized only in city office areas, which makes them prone to traffic jams and difficult to reach for those who live far away. This is why the need for work hubs continues to increase. Work hubs are the right solution for individuals and small companies who want to be creative in a flexible, relaxed, strategic, and stress-free environment. Work hubs are more relaxed than conventional offices, but support interaction between workers like cafes, while minimizing distractions. Work hubs also eliminate the sense of isolation that people who work in home cafes feel. A comfortable and non-stressful work environment can support productivity and human interaction in it. One approach that supports this is nature in the space. This approach integrates nature into the building. Nature in the space can be realized by applying natural elements to buildings, that are related to human senses. This approach has been proven to reduce stress and fatigue in humans. In addition, the building mass will be analyzed in terms of linkage, site potential, climatology, and accessibility, to produce a design as a solution that answers all the problems that exist on the site. This work hub design, with a nature in the space approach, involves the use of rooftop gardens and irrigation. Therefore, a proper structural system that can withstand the load given by the plants, soil and water will be required. Keywords: Coworking Space; Nature in The Space; Work Hub
KAJIAN PUSTAKA TENTANG PENGARUH VARIASI KADAR AIR DAN PENAMBAHAN MATERIAL ADDITIVE TERHADAP KARAKTERISTIK KUAT GESER TANAH LEMPUNG Yuki Panie; Monica T Andries; Sudarno P Tampubolon; Efendy Tambunan
Jurnal Rekayasa Teknik Sipil dan Lingkungan - CENTECH Vol. 7 No. 1 (2026): Vol. 7 No. 1 (2026): Jurnal Rekayasa Teknik Sipil dan Lingkungan, APRIL 2026, I
Publisher : UKI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/cen.v7i1.8531

Abstract

This study examines the effect of moisture content and the addition of various additives on the shear strength behavior of clay soils through a comparative literature review of 13 previous studies. Clay soil, known for its low bearing capacity and high sensitivity to moisture changes, frequently requires stabilization to enhance its strength. The results indicate that an increase in moisture content generally decreases soil shear strength due to a reduction in cohesion and the internal friction angle, particularly when it exceeds the optimum moisture content. Conversely, the addition of additives such as cement, lime, rice husk ash, and polypropylene fibers shows a significant increase in shear strength. Cement and lime provide chemical bonding, whereas ash and fibers enhance physical resistance. The combination of these materials yields the most effective results. This study utilizes a qualitative-comparative analysis by gathering data from laboratory-based journal publications that include direct shear tests and unconfined compression tests. The findings emphasize the importance of controlling moisture content and material composition in geotechnical engineering and slope stability. It is concluded that moisture content is a dominant factor that negatively impacts shear strength, whereas additives serve as efficient reinforcers. Future research is suggested to involve laboratory experiments on various types of clay soils and to utilize computational modeling for more accurate predictions regarding the interaction between moisture content and stabilization materials. Keywords: Additives; Clay soil; Moisture content; Shear strength; Soil stabilization
ANALISIS KUALITAS AIR SUNGAI KALI SURABAYA BERDASARKAN PARAMETER FISIKA, KIMIA, DAN LOGAM BERAT PB DAN CD Nadifa Nadifa Fairuz Cantika Zafarina; Syadzadhiya Qothrunada Zakiyayasin Nisa
Jurnal Rekayasa Teknik Sipil dan Lingkungan - CENTECH Vol. 7 No. 1 (2026): Vol. 7 No. 1 (2026): Jurnal Rekayasa Teknik Sipil dan Lingkungan, APRIL 2026, I
Publisher : UKI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/cen.v7i1.8542

Abstract

The Kali Surabaya River is one of the key sources of raw water in East Java, used for drinking water, industrial purposes, and irrigation. Various anthropogenic activities along the river basin have the potential to degrade water quality by increasing the levels of suspended solids and heavy metals. This study aims to analyze the water quality of the Kali Surabaya River based on physical, chemical, and heavy metal parameters at five observation points representing different land-use characteristics. Samples were collected using the purposive sampling method and then analyzed for pH, temperature, dissolved oxygen (DO), total suspended solids (TSS), lead (Pb), and cadmium (Cd). The test results were compared with Class I water quality standards as stipulated in Government Regulation No. 22 of 2021. The results showed that pH values ranged from 7.65 to 8.15, and all monitoring sites met the quality standards. Temperature ranged from 28.75 to 32.25°C, while DO ranged from 5.2 to 7.05 mg/L, with one sampling point failing to meet the quality standards. TSS concentrations ranged from 22 to 552 mg/L, with only one sampling point meeting the quality standards. Pb concentrations ranged from 0.0727 to 0.1695 mg/L, and all sampling points exceeded the quality standards, while Cd concentrations ranged from 0.00953 to 0.0152 mg/L, with 3 sampling points exceeding the quality standards. Variations in water quality are influenced by land-use characteristics, particularly industrial, agricultural, and residential activities. Overall, the TSS, Pb, and Cd parameters serve as indicators were identified as the primary parameters contributing to the deterioration of water quality in the Kali Surabaya River, indicating the need for sustainable pollution control measures. Keywords: Water quality; Kali Surabaya River; Total Suspended Solids (TSS); Lead (Pb); Cadmium (Cd).
IDENTIFIKASI KELIMPAHAN DAN KARAKTERISTIK FISIK MIKROPLASTIK PADA AIR PERMUKAAN DI KALI SURABAYA Azkafia Alkafi Pasadzani; Syadzadhiya Qothrunada Zakiyayasin Nisa
Jurnal Rekayasa Teknik Sipil dan Lingkungan - CENTECH Vol. 7 No. 1 (2026): Vol. 7 No. 1 (2026): Jurnal Rekayasa Teknik Sipil dan Lingkungan, APRIL 2026, I
Publisher : UKI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/cen.v7i1.8543

Abstract

Surabaya River, a tributary of the Brantas River, serves as a source of raw water for community activities and needs, while also functioning as a discharge channel for industrial and domestic waste, potentially causing microplastic pollution. Microplastics are particles smaller than 5 mm that are resistant to degradation, leading to negative environmental impacts. This study aimed to identify the abundance and characteristics (shape, color, and size) of microplastics in the water column of the Surabaya River. Sampling was conducted at five stations using a purposive sampling method referring to SNI 8995:2021. Sample preparation followed the NOAA procedure, and particle identification was carried out using a digital microscope at 4x magnification. The results showed that microplastic abundance ranged from 69–181 particles/L, with non-uniform patterns across stations and depths. Fiber was the dominant type found at nearly all stations, followed by fragments and film. The particle colors identified were black and transparent, while the 1–3 mm size category was dominant across all stations. Depth differences did not consistently affect microplastic abundance, which was presumably more influenced by hydrodynamic conditions, anthropogenic activities around the river, and particle density.