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REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development
Published by Universitas Tadulako
ISSN : 27233472     EISSN : 27461033     DOI : https://doi.org/10.22487/renstra
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Transportation
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development is a peer-reviewed journal published by the Civil Engineering Department, Engineering Faculty, Tadulako University. The journal is to publish research articles or original literature reviews covering all concentrations in the fields of Civil and Applied Engineering including Structural Engineering, Geotechnical Engineering, Water Resources Management, and Engineering, Transportation Engineering and Management, Construction Project Management, and other applied sciences related to the engineering field. Articles submitted for publication in the journal must have never been published by other media or journals and are free from plagiarism. It is a six-monthly journal, open-access and published in collaboration with the Indonesian Society for Geotechnical Engineering, Regional Commissariat of Central Sulawesi, and Indonesia Transportation Society, Central Sulawesi.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 6 Documents
 1 
Search results for , issue "Vol. 7 Issue 1 (March 2026)" : 6 Documents clear
Simulasi Uji Beban Statis dengan Variasi Jenis Konstruksi pada Kekuatan Produk Stool Kayu Persegi Rahmat, Bahtiar
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 7 Issue 1 (March 2026)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v7i1.746

Abstract

Furniture products still been one of the export commodities that required attention. Contributing a value of more than USD 1 billion, consistency in maintaining the quality of furniture products needed to be improved. The construction or joints in furniture products had been the parts most prone to defects, cracks, or even fractures due to external forces, both during testing and usage. Prototype product testing required more time and resources. As a result, a method had been developed to obtain strength test data without creating a prototype, known as the Finite Element Analysis (FEA) method. The objective of this study is to measure the joint strength of a stool assembled with three types of construction: dowel pin, biscuit lamello, and open tenon joints. The external load had been adjusted according to the Indonesian National Standard (SNI) in terms of force position, magnitude, and direction. The results of the static load simulation shown that the application of all three types of construction had been able to withstand an external load of 1100 N effectively. The maximum von mises stress, which had been 9.647 MPa, had still been far below the material's yield stress of 41.2 MPa. Additionally, the maximum deflection and strain had only been 0.198 mm and 8.640e-04, respectively, in the product with biscuit lamello construction. The dowel pin construction had also produced a maximum stress of 6.031 MPa, a strain of 4.247e-04, and a maximum deflection of 0.170 mm, with a safety factor of 7.11. However, overall, the application of open tenon construction had been more recommended, as it had achieved the best safety factor of 13.630, with the maximum stress experienced by the stool being only 3.670 MPa.
Evaluasi Kinerja Operasional BRT Trans Jateng Koridor 1 dan 6: Pendekatan Faktor Muat (Load Factor) Narendra, Alfa; Y. Irnizarifka, Ardhiatma; Anisa, Fitri; Z. Hasanah, Ghaida; I. Fatati, Herlingga; H. Falakh, Maulana; Puspitasari, Pipit; Zulianti, Rizka; R. Auzia, Rohadatu; Husniyah, Tamimatul; A. Khairunisa, Ufaira; P. Sari, Yesi
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 7 Issue 1 (March 2026)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v7i1.818

Abstract

The implementation of pilot Bus Rapid Transit (BRT) systems in metropolitan agglomerations, such as Trans Jateng, plays a pivotal role in providing affordable public transportation, enhancing regional connectivity, and fulfilling Minimum Service Standards (MSS). This study evaluates the operational performance of two specific Trans Jateng corridors: Corridor 1 (Semarang – Bawen) and Corridor 6 (Semarang – Grobogan). The primary focus of this research is the analysis of time-series load factor data to assess bus performance. Data were gathered through on-board surveys utilizing Global Positioning System (GPS) devices and structured survey instruments. The data collection was conducted over a period of two weekdays and one weekend day. The analytical results indicate that both corridors experience significant kelebihan penumpang during peak hours, with load factors exceeding 170% in Corridor 1 and 110% in Corridor 6. Furthermore, this study identifies distinct fluctuations in passenger demand patterns between weekdays and weekends, as well as variations between individual trips within the same corridor. The findings reveal a notable disparity in average load factors. In Corridor 1 during weekdays, the load factor for the Semarang – Bawen route was 55.73%, while the Bawen – Semarang route reached 38.81%; on weekends, these figures shifted to 60.46% and 40.03%, respectively. In Corridor 6, the weekday load factor for the Semarang – Godong route was 46.05% and 39.25% for the reverse direction, whereas weekend figures were recorded at 51.49% and 34.68%. Given that the ideal minimum load factor is 70%, more systematic operational management is necessitated to maintain optimal service performance. Proposed recommendations include the dynamic adjustment of fleet size to align with demand levels—particularly during peak periods—and the implementation of more adaptive capacity management strategies. Such measures are intended to regulate load factors during high-demand intervals, enhance passenger comfort, and improve the overall operational efficiency of the transit service.
Penjadwalan Berbasis Risiko dengan Program Evaluation and Review Technique untuk Mendukung Implementasi BIM 4D pada Proyek Jembatan Febrianti, Imelda; R. Winanda, Lila Ayu; Roostianawaty, Nenny; Kartika, Deviany; F. Anugerahputra, Krisna
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 7 Issue 1 (March 2026)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v7i1.819

Abstract

The construction industry plays strategic role in national infrastructure development, particularly in bridge projects that are characterized by high complexity and significant implementation uncertainty. Bridges function not only as physical connections between regions but also as critical infrastructure supporting public mobility and economic growth. Therefore, accurate scheduling methods that are capable of accommodating the risk of time delays are required. This study to analyze the total project duration of bridge project risk-based approach through the integration of three-dimensional Building Information Modeling (BIM 3D) and the Program Evaluation and Review Technique (PERT). The analysis begins with the development of three-dimensional bridge structural model using Tekla Structures to generate bill of quantity that includes structural material volumes. These quantity data basis for probabilistic duration estimation using PERT method through expert judgment, which involves optimistic time, most likely time, and pessimistic time. The BIM 3D modeling results indicate total reinforcement steel volume of 24,343.4 kg and concrete volume of 274.1 m³. Furthermore, risk-based scheduling using the PERT method analyzed with the Precedence Diagram Method (PDM) produces total project duration of 190 days with completion probability of 50%. This result indicates potential risk of delay that should carefully project time control
Pemodelan Causal Loop Diagram Percepatan Proyek terhadap Biaya dan Kualitas Konstruksi: Pemodelan Causal Loop Percepatan Proyek terhadap Biaya dan Kualitas Konstruksi D. Maharani, Avrilia; R. Winanda, Lila Ayu; Wijayaningtyas, M.; Kartika, Deviany
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 7 Issue 1 (March 2026)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v7i1.820

Abstract

Construction project acceleration is a strategy commonly implemented to overcome schedule delays; however, its application often results in increased costs and reduced work quality when not managed in a systematic and integrated manner. This condition reflects the presence of complex and dynamic interrelationships among time, cost, and quality as the three main elements within the triple constraint framework, which cannot be adequately analyzed using linear approaches. Failure to understand the interactions among these three aspects may lead to project inefficiencies and decreased overall performance. Therefore, an approach capable of explaining cause–effect relationships and feedback mechanisms within construction project systems is required. This study aims to model the causal relationships between project acceleration, cost, and quality in order to obtain a structural understanding of their dynamic interactions. The research method employs a system dynamics approach using causal loop diagram modeling supported by Vensim PLE 10.4.0 software. The research stages include system definition to determine boundaries and identify key variables, model formulation based on a literature review to establish intervariable relationships, and the development of causal loop diagrams to illustrate interactions and feedback structures within the system. The modeling results indicate that the developed system consists of twenty feedback loops and forty-six one-way relationships representing interactions among acceleration, cost, and quality factors within the context of project acceleration. These findings confirm that project acceleration, cost, and quality are not independent variables but are dynamically interconnected. The proposed model provides a conceptual contribution to strengthening systemic understanding in construction project management and can serve as a foundation for strategic decision-making related to more effective and sustainable project acceleration
Pemodelan Struktural Dermaga dengan Variasi Tiang Pancang Menggunakan SAP2000 N. Rizkillah, Sasti; Imananto, E.I.; Yudianto, E.A.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 7 Issue 1 (March 2026)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v7i1.822

Abstract

Wharf structures operate in complex marine environments and are subjected to significant lateral loads from berthing forces, sea currents, and wave actions that affect structural behavior and foundation performance. One common method to improve lateral resistance is the use of inclined piles, which convert part of the horizontal load into axial compressive force. This study develops a numerical structural model of a wharf with variations in pile inclination from vertical to inclined configurations, limited to the modeling stage. Finite element modeling is carried out using SAP2000 based on wharf geometry, material properties of concrete and steel, soil parameters from site investigation data, and service load combinations representing operational conditions. All pile inclination models are analyzed using identical parameters to ensure consistent comparison. The evaluated responses include axial force, shear force, bending moment, and global lateral displacement of the wharf. The results show that the vertical pile configuration produces the largest lateral displacement of 0.147 m and high bending moments, indicating a flexible lateral response. As pile inclination increases, axial force rises from 6,471.024 kN and reaches a maximum of 6,496.89 kN at an intermediate inclination, while bending moments gradually decrease. Lateral displacement is reduced and reaches a minimum value of 0.133 m at the same inclination. Further increases in pile inclination lead to higher shear force and a gradual increase in lateral displacement despite lower bending moments. These results confirm that inclined piles improve the lateral performance of wharf foundations, with intermediate inclination providing the most balanced response between axial force, bending moment, and lateral displacement
Peninjauan Kembali Kebutuhan Dimensi Saluran Drainase Sekunder di Kelurahan Balaroa Kecamatan Palu Barat
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 7 Issue 1 (March 2026)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v7i1.555

Abstract

Drainage conditions in Palu City still need attention, especially in the drainage in Balaroa Village, drainage dimensions that do not match the required dimensions can cause flooding problems because the channel cannot accommodate the design flood discharge. One of them occurred in the Secondary Drainage in Balaroa Village, West Palu Subdistrict, the narrowing of the drainage channel along 200 meters resulted in disruption of the function of the drainage. The purpose of this writing is to determine the performance and the need for appropriate dimensions in the Secondary drainage Balaroa West Palu District. The research process begins with the collection of secondary data in the form of rainfall data, population data and also primary data obtained through direct measurements in the field. Then the abnormality test is carried out, analyzing the frequency of rainfall using the log person type III method, calculating discharge discharge, design flood discharge, evaluating drainage capacity and calculating channel dimension requirements. The results showed that the results of the evaluation of drainage performance along the 560 meters, at STA 0+000 to STA 0+200 were not able to accommodate the design discharge where the results of the design flood discharge with a 10-year return period of 14,935 m3/s were obtained, with the existing channel capacity at STA 0+000 of 3,390 m3/s, then the calculation of channel dimension requirements with an average channel discharge of 22,450 m3/s was carried out so that in the future a channel with a capacity corresponding to the design flood discharge could be built

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