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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 106 Documents
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Perbandingan Kapasitas Kolom Beton Bertulang Berdasarkan Variasi Bentuk Sengkang dengan Analisis Finite Element Method Anam, M.K.; Amir, F.; Sutrisno, M.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 1 (March 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i1.621

Abstract

Columns are one of the structural elements that greatly influence the behaviour of the structure. Columns are capable of holding axial compression loads and transmitting them to the structural elements below. Column capacity can be increased by the confinement of lateral reinforcement/stirrup. The stirrups function to maintain the compressive strength capacity of the concrete column before and after spalling. Advances in software technology have had a very significant impact on the development of structural element analysis methods, including software based on the Finite Element Method (FEM), Abaqus/CAE Student Edition. It can also simplify several laboratory research of Civil Engineering into a simulation. However, in simulation practice, parameters in the form of material data are needed as input. To get the same behaviour between the test object and the simulation, convergent parameters are needed. The parameters to be analyzed are CDP (Concrete Damage Plasticity) plastic parameters. While the simulation for loading, shape of the test object, and placement refers to the results of previous studies. The reinforced concrete column test model used consists of 5 (five) different variations of stirrups. The results of the simulation show that reinforced concrete columns with stirrups provide support in the form of shear force capacity that can maintain the value of the axial compressive strength capacity. From the five existing test models, it was obtained that the increase in the value of the axial compressive strength capacity of the column due to the variation of stirrups for column B, column C, column D, and column E to column A (without stirrups) were 115%, 120%, 121%, and 119% consecutively. The output values from the analysis include the diagrams of axial force and displacement, column interaction diagrams, and material stress-strain diagrams
Pemetaan Ilmiah Topik Penelitian Perluasan Layanan Bus Rapid Transit (BRT) Trans Jateng Nugraheni, D.W.; Rochim, A.; Karlinasari, R.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 1 (March 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i1.642

Abstract

Bus Rapid Transit (BRT) is one of the types of bus-based public transportation that provides fast, convenient, and affordable urban transportation. The BRT service in Central Java is called Trans Jateng and is managed by the Transportation Agency of Central Java Province. The operational concept of Trans Jateng is to serve routes that connect urban agglomeration areas in the province of Central Java. Trans Jateng plans to develop future services grouped into service corridors based on the existing development areas in Central Java, including the Kedungsepur, Wanarakuti, Banglor, Bregasmalang, Petanglong, Subosukowonosraten, Barlingmascakeb, and Purwomanggung agglomerations. In addition to opening new corridors, the development of Trans Jateng BRT services can also be carried out by expanding existing services; therefore, a comprehensive study is essential to monitor and track the progress of the research. This paper will map the literature on service expansion, BRT, and Trans Jateng. The literature database was taken from Google Scholar and analyzed using the VOSviewer tool with a mapping of previous research. The results of this research are highly useful for understanding the current development of research on the expansion of Trans Jateng BRT services in the future.
Studi Keandalan Geolistrik Dalam Identifikasi Kebocoran Embung: Studi Kasus Embung Wolo, Sulawesi Tenggara Mangidi, U.; Minmahddun, A.; Razak, E.N.P.; Sulha, S.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 1 (March 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i1.644

Abstract

Small dams are vital for supporting water resource conservation. The reservoir stores water from several water sources, especially in the rainy season, so that it remains available in the dry season. Some reservoir infrastructures were built using earthen fill materials located around it. This condition is very vulnerable to disasters, ranging from seepage to collapse. It is important to evaluate the safety of all potential dangers to minimize the risk of disasters. One method that can be used is the geoelectric method, which allows us to analyze the resistivity properties of the soil, but the reliability of this method needs to be further evaluated. This research aims to determine the reliability of geoelectric in identifying potential leaks in reservoirs. Geoelectric measurements were carried out at Wolo Small Dam using the Wenner-Schlumberger configuration with 32 electrodes at 2.5 m. Data collection was carried out at the top of the small dam so that it could provide the condition of the soil layer of the embankment material in the longitudinal direction. Validate the measurement using the results of previous research. The results of the analysis show that there are differences in lithology in the body of the reservoir, which indicates differences in the quality of work during construction. The interface between these two surfaces can lead to leaks. Apart from that, the analysis results also show the potential for piping in the reservoir. The location of the potential piping area is not far from the results obtained in previous research at the same location. This shows that geoelectric is quite capable of being a tool that can be used to identify leaks in reservoirs or other water structures. Of course, the combination of geoelectric and other soil testing will provide better results in anticipating disasters caused by small dam leaks
Kuat Lentur Balok Laminasi Kayu Mangga Berbasis Defeleksi dan Regangan dengan Sistem Pembebanan Four Point Bending Baide, H.O.; Siregar, A.P.N.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 1 (March 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i1.650

Abstract

To meet the standard needs of low-quality wood structures, special methods are needed that can meet these needs. So the shape of the structure was developed, not whole wood but laminated components made through gluing or commonly called laminated beams This study aims to determine the difference between laminated beams and solid blocks of mango wood through testing the bending strength of beams. The research method used in this study uses quantitative methods with an experimental method approach. The research conducted used Mango wood samples with two types of block treatment, namely laminated beams and solid blocks. The laminated beam is made using 5 layers of Mango wood with a size after lamination of 1200 x 100 x 50 mm. As for solid beams using a size of 1200 x 100 x 50 mm. Then the wood is tested by applying two centralized loads on two pedestals at a distance of 30 cm from the pedestal. The results showed that from testing mechanical properties which in this case is limited only by flexural strength testing. The flexural strength test in question is four point bending. The results of the flexural strength test obtained an average value of modulus of elasticity (MOE) of laminated beams of 6804.796 MPa while for solid beams of 9130.465 MPa. According to SNI 7973-2013. The average value of bending strength (MOE) was obtained 6804.796 MPa for laminated wood and 9130.465 MPa for solid wood. According to SNI 7973-2013, the value of laminated wood in this study is included in the E13 quality code. As for solid wood, it is included in the E18 quality code. This shows that the MOE value of solid beams is greater than the MOE of laminated beams. Then in the modulus of rapture (MOR) test, the average MOR value of laminated beams was 66.205 MPa and solid beams of 95.007 MPa. This shows that the MOR value of laminated beams is smaller than the MOR value of solid beams.
Analisis Profil Kecelakaan Konstruksi pada Proyek Bangunan Gedung di Indonesia Masiku, H.; Latief, R.U.; Parung, H.; Arifuddin, R.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 1 (March 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i1.651

Abstract

The construction sector is the highest contributor to construction accidents, which is 31.9% of the total construction accidents. One of the leading causes of accidents is the need for more awareness from workers and companies of the importance of implementing OHS at work. This situation arises due to the need for maximum planning and implementation of the Construction Safety Management System through the Minister of Public Works and Public Housing, and the Indonesian government has issued Regulation Number 10 of 2021 concerning construction safety guidelines. Data collection in this study is secondary data, namely construction accident reports by the Construction Safety Committee. The analysis used is archival analysis, where the report is mapped to produce statistics on construction accidents based on the type of project, time of occurrence, day of occurrence, the impact of the accident, and the cause of the accident. The results showed that the building became the first rank of construction project types with a percentage of 35% where the occurrence was in the morning before noon, namely 08.00-12.00, and on Tuesday became a day that often occurred construction accidents based on the construction safety committee. It was found that the cause of the accident was dominated by human factors and work equipment, which would impact the damage to the building itself with a percentage of 56%. The results of this study will be helpful for implementers/construction accident experts as guidelines for the future
Kapasitas Mekanik Panel Komposit Beton Ringan terhadap Beban Siklik Fatriady, M.R.; Djamaluddin, R.; Tjaronge, M.W.; Amiruddin, A.A.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 1 (March 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i1.652

Abstract

The position of our country is included in the area Ring of Fire, where 90% of earthquakes on earth will occur in this region. Earthquakes in West Sumatra (2009), Mentawai (2010), Lombok and Palu (2018) have claimed more than 10,339 lives and more than 100,000 heavy damage to buildings. Building walls are generally made of brick or adobe, but these two materials have several disadvantages including weight and brittle. As a result of its considerable weight, it will increase the dead load of the structure so that the earthquake load will also increase. Thus, lightweight and clay materials (ductile) will be better if used as earthquake-resistant building walls and the level of risk is lower. Prefabricated sandwich panels produced by PT. BUILDING TECHNOLOGIES INDONESIA within BUKAKA TEKNIK UTAMA Tbk Group. to be a series of cyclic load tested full scale wall constructions. The conventional panel circuit model obtained the behavior of each swaying wall segment as an independent individual panel. Cyclic test results up to drift 12 were obtained with a maximum load of 4.245 kN with a maximum displacement of 106.28 mm compressive direction and a maximum load of 1.425 kN with a maximum displacement of 75.68 mm pulling direction. Deviation behavior is obtained that continues to increase as horizontal loads increase, but not until structural damage occurs in the series of 3 sandwich walls. This condition is a positive thing in the development of buildings with light materials to reduce the magnitude of the earthquake force and minimize damage and casualties.
Perilaku Geoteknis Tanah Lanau yang Distabilisasi dengan Serutan Karet Ban Utama, K.A.; Harianto, T.; Dwianto, D.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 1 (March 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i1.653

Abstract

Recently, developments in the geotechnical-environmental engineering field have become more attractive. One of the interesting efforts to be researched is how the geotechnical behavior of silty soil reinforced with fiber from shredded tires. This study aims to evaluate silty soil's mechanical properties, which are stabilized with shredded tires. This research involved shredded tire from used tire shreds with proportions of 2%, 3%, 4%, and 5% by dry weight of soil sample. The tests of soil physical properties and mechanical properties were conducted to evaluate the characteristics of the mixture soil. The unconfined compressive strength (UCS), shear strength, California Bearing Ratio (CBR) and cracking behavior were verified to evaluate the behavior of the silty soil–shredded tires mixture. The results showed that adding 2% shredded tires performed satisfied on some of the mechanical properties tested. These results illustrate the potential of utilizing shredded tires waste as an alternative material that can reduce tire rubber waste.
Analisis Stabilitas Lereng Tambang Nikel Kabupaten Morowali Ramadhani, S.; Minmahddun, A.; Patuti, I.M.; Widiastuti, M.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 1 (March 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i1.654

Abstract

Central Sulawesi Province is a province that has quite high mining activities, so an evaluation of the stability of open pit slope excavations needs to be carried out to prevent collapses during the exploration process which could result in loss of life. Analysis using the finite element method is one method that can be used to analyze slope deformation and stability during the excavation process. This research simulates excavation of a mine slope in 4 stages with a height of 5 m and a slope of 500. The analysis was carried out based on the results of the N-SPT test at three locations (GT-15617, GT-19125 and GT-19841) which are the slopes with the most extreme slopes. The analysis results show that at GT-15617 the maximum deformation occurred at stage 4 of the excavation at 0.18 m with a safety factor of 1.43, the maximum deformation at the GT-19125 location occurred at stage 4 at 0.21 m with a safety factor of 1.26 and at location GT-19841 maximum deformation occurred at stage 4 of 0.21 with a safety factor of 1.21. The overall safety factor analysis results do not meet the required minimum safety factor criteria.
Model Bangkitan dan Karakteristik Perjalanan pada Perumahan Kelapa Gading Kalukubula Kecamatan Sigi Biromaru Koswanto , R.H.; Ramlan, R.; Setiawan, A.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 2 (September 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i2.668

Abstract

Increasing population density will affect land use into residential/community housing areas and the emergence of settlements will increase the number of movements generated which can disrupt traffic flow which then reduces the level of road service. This research aims to model the generation of movement in the Kelapa Gading Kalukubula housing area and to determine the amount of traffic generation in the housing at present and in the future because the housing will continue to develop and will analyze the factors that influence the generation of traffic movement. Data collection was carried out by filling out a questionnaire which was distributed and given to residents using a sampling technique (stratified random sampling). To produce a good generation model based on ordinary less squares (OLS), the results of the questionnaire are processed and analyzed using multiple linear regression by SPSS software. Socio-economic characteristics and travel characteristics of the occupants of the house are tabulated as factors influencing the value of trip generation at Kelapa Gading Kalukubula Housing. The best model for generating movement in the Kelapa Gading Kalukubula housing complex is Y = -0.584 + 0.168 X1 + 0.349 X2 + 0.366 X3 + 0.092 X4 + 0.212 X5 with R2 = 0.695, F falue 159.138 where is X1 amount of family member, X2 is amount of worker in family member, X3 is amount of students in family, X4 is amount of car ownership, X5 is amount of motorbike ownership. Based on this model, the total trip generation is 8289 trips/day and averange of trips is 3 trips/day, while the vehicle leaving housing from the Traffic Count is 9462 trips/day and vehicles entering the housing is 10397 trips/day
Penerapan Metode SPI untuk Analisis Kekeringan di DAS Sombe - Lewara Kabupaten Sigi Andiesse, V.W.; Lipu, S.; Setiawan, A.; Rustiati, N.B.; Oktavia, S.R.; Amaliah, T.; Tandiseru, I.F.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 5 Issue 2 (September 2024)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v5i2.669

Abstract

The level of drought and wetness is a standard in estimating conditions in an area that occur in the past, present, and future. By knowing the SPI value of an area, it can be known the drought distribution map which aims to handle drought disaster mitigation and adaptation. This research aims to see how much the level of drought, wetness, and normal conditions that occur in the Sombe Lewara Watershed, Sigi Regency so that prevention can be carried out and the basis for government policy-making in the event of a drought disaster. The method used in this research is the SPI (Standardized Precipitation Index) method which is commonly used to determine the deviation of rainfall from the norm, in a period (monthly, bi-monthly, quarterly, and so on). This method is one of the analysis methods of the many techniques to obtain the existing drought index. In this study, the data used is rainfall data for 19 years (2003 - 2021) obtained from Porame Rain Station. The rainfall data is then processed to obtain the SPI value in the Sombe Lewara watershed. For the calculation of SPI, the processed rainfall data is then transferred to the gamma distribution to obtain the SPI value. SPI-1 index (1.145) with moderately wet conditions, SPI-3 (0.640) with normal conditions, SPI-6 (-0.234) with normal conditions, SPI-9 (1.578) with dry conditions, and SPI-12 (1.017) with moderately dry conditions.From 2003 - 2021, the year that experienced the worst drought conditions was in 2014 in SPI-1 with an SPI value of -3.888 (very dry). After all SPI values are averaged, the standard SPI value of the Sombe Lewara Watershed is in normal conditions with a value of 0.829.

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