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Astonjadro
Published by Universitas Ibn Khaldun Bogor
ISSN : 23024240     EISSN : 26552086     DOI : http://dx.doi.org/10.32832/astonjadro
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Astonjadro: Jurnal Rekayasa Sipil adalah jurnal ilmiah dibidang teknik sipil p-ISSN : 2302-4240 dan e-ISSN : 2655-2086. Jurnal Rekayasa Sipil Astonjadro diterbitkan untuk mengapresiasi dan memberikan informasi ilmiah bagi peneliti, dosen serta para profesional. termasuk dalamnya pengembangan model dan konsep penelitian yang mengacu secara berkesinambungan. Jurnal Astonjadro diterbitkan oleh Fakultas Teknik dan Sains Universitas Ibn Khaldun Bogor, terbit dua kali dalam satu tahun yaitu bulan Juni dan Desember.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 507 Documents
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The Effects of Implementing Green Roof Scenario on NO2 and Urban Hear Island Distribution in Yogyakarta City Sukanti, Wahyuni; Sunarharum, Tri Mulyani
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.15982

Abstract

The development of urban areas requires a city to meet residential space needs which can have an impact on reducing green open space and causing derivative impacts in the form of decreasing air quality. The problem faced by the City of Yogyakarta in developing green open space is limited land, therefore innovation in green open space development is needed, one of which is developing green infrastructure by implementing a green roof scenario. So this research aims to analyze the application of the green roof scenario to air quality, especially in the distribution of Urban Heat Island (UHI) and Nitrogen Dioxide (NO2) in Yogyakarta City. The method used in this research are Landsat 8 images in 2021 with field observations and delineation of the potential area for green roofs at hotels and malls that have rooftops and the potential to implement green roofs. The research results show that implementing the green roof scenario in Yogyakarta can affect air quality. There are changes in the area that decrease the area in UHI class 4 (>3) from 4.74 Ha to 3.78 Ha and an increase in the Non-UHI area from 1,449.68 Ha to 1,731.57 Ha. Based on the NO2 parameter there has also been a change that increases in the area on a very good air quality scale from 406.80 Ha to 560.96 Ha, and a decrease in the area on a very poor scale from 23.71 Ha to 16.24 Ha. The results of the delineation of the UHI map, NO2 distribution, and spatial plans for Yogyakarta City show that locations with high UHI levels and poor NO2 quality are most widely distributed in Kemantren Gondokusuman, Umbulharjo, and Kotagede.
Traffic Engineering Management of Cikarang Wholesale Center, Cikarang Terminal, and Jababeka Area Rozi, M. Hillal Fahrul; Susilo, Budi Hartanto; Yuwono, Bambang Endro; Maha, Indra; Ma'soem, Dadang Mohamad
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.16225

Abstract

Bekasi Regency is the second highest in the number of motorized vehicles for motorbikes and first for cars. During peak hours at certain sections and intersections, especially in the SGC area, Cikarang Terminal and Jababeka area, there are traffic problems ranging from side obstacles, public transport dropping/picking up passengers incorrectly, and so on. The aim of this research is to outline the performance of existing sections and intersections in the SGC area, Cikarang Terminal and Jababeka area as well as identify existing traffic problems and how to handle them. The methods used are Four step model, section performance analysis, intersection performance analysis, Forecasting, model validation and using PTV Vissim. The research results show that there are 3 problematic road segments with a high level of service, including Jl. Fatahillah 2, Jl. Raya Industri, Jl. Captain Sumantri with a VC Ratio of 0.75, 0.85, and 0.94 respectively and there are 6 of the 9 intersections that have problems, namely the Brigief Dormitory intersection, the terminal intersection, the Yos Sudarso-Kp.Sumantri intersection, the Arief Rahman Hakim- Jl .Industry intersection, Pasir Gombong intersection and SGC intersection. Changes resulting from traffic management and engineering are not very significant every 5 years because many drivers will switch to the road section with the lowest VCR.
Real Response Modification Value of Reinforced Concrete Structures Using the Pushover Method in Horizontal Irranged Buildings Octaviani, Rien; Bestari, Resmi; Sukamdo, Pariatmono
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.16264

Abstract

The country of Indonesia is prone to earthquakes, because geographically Indonesia is located at the meeting point of four tectonic plates, namely the Asian continental plate, the Australian continental plate, the Indian Ocean plate and the pacificocean plate. An earthquake is a vibration or shock that occurs on the surface of the earth due to the sudden release of energy from within, creating seismic waves. Earthquakes are usually caused by movements of the earth's crust (earth plates). Planning an earthquake-resistant building structure in Indonesia is very important, because most areas in Indonesia are in fairly high earthquake areas, so earthquake regulations, namely SNI 1726-2019, have been issued. Design re-planning or follow-up can be done using the real R value. If in the SRPMK structure the real R value is greater than the design R, then the planner can save reinforcement by re-analyzing the structure using real R. With the results of this research analysis, it can be concluded that the SRPMK structure with horizontal irregularities at the Jakarta location, produces a real modified response (R) value (referring to the ATC-40 limit on the ratio of deviations between floors and the rotational capacity of structural components) which is smaller than the specified maximum value. on SNI. In accordance with the provisions of ATC-40, all structural configurations are included in the Damage Control (DO) category level, which means that the transition between Immediate Occupancy (IO) SP-1 and Life Safety (LF) SP-3, the building is still able to withstand the forces of the earthquake that occurred, with the risk of human loss is very small. Only SRPMB's 8-story medium ground structure is included in the Life Safety (LF) category level SP-3. The real R value obtained in the SRPMK structure varies between 7.218 – 8.515. The results of this analysis are not significantly different from existing provisions, and in soft soil conditions the value is smaller than for the SRPMB structure. Real R less than the provisions is the maximum value that can be used based on this research. The real R value obtained in the SRPMB structure varies between 5.081 – 10.276. The results of this analysis are very different from the existing provisions for both soft and medium soil conditions; and Structural optimization has been carried out in each building configuration, but it was found that the cross-sectional dimensions of the SRPMB columns and beams in soft soil conditions were the largest cross-sectional dimensions compared to the others.
The Influence of Travel Time and Transportation Costs on the Use of Online Motorbike Taxi in Palembang City Rozandi, Ardin; Amar, Tsulis Iqbal Khairul; Permadi, Dio Damas
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.16335

Abstract

One of the cities in Indonesia that usually uses motorbike taxis or online motorbike taxi services for transportation is Palembang. Mode selection is the main stage in transportation planning and policy. Urban areas need to provide space for mobility modes and transportation infrastructure because the choice of mode affects how efficiently people can move around. The choice of transport mode is determined by competition between transport modes, which takes into account travel demand and can benefit both private and public transport. Data-based online motorcycle taxi applications facilitate consumer access by making it easier for the general public and students to confirm the driver's identity. Online transportation is becoming increasingly common in big cities like Palembang as the transportation sector develops to better serve people's demand for efficient mobility. This research aims to analyze how travel time and transportation costs can influence the use of online motorcycle taxi transportation in Palembang City. This research uses quantitative descriptive research, this research uses non-probability samples with a purposive approach, namely a technique for determining samples with certain opinions, so the number of samples in this research is 96 people in the city of Palembang who use online motorbike taxi transportation. Data collection techniques using questionnaires, and data analysis using multiple linear regression. Based on the research results, travel time has a significant influence on the use of online motorcycle taxis in Palembang City (0.003 < 0.05), and transportation costs have a significant influence on the use of online motorcycle taxis in Palembang City (0.000 < 0.05). Travel time and transportation costs have a significant influence on the use of online motorcycle taxis in Palembang City (0.000 < 0.05), with a model capability of 70.5%, while the remaining 29.5% of online motorcycle taxi use in Palembang City is influenced by factors others not examined in this study.
Organizational Culture in Construction: An Investigation of Trends and Practices in Large-Size Construction Companies Putra, Arya Pradamansyah; Negara, Kartika Puspa; Anwar, M Ruslin
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.16345

Abstract

Construction companies are one of the business sectors that drive the Indonesian economy. The increase in construction companies has led to increased competition in the industry. Culture influences the construction process that applies to the company and the output of construction products. This study aims to find out how organizational culture practices and trends in the large-size construction companies. To investigate the organizational culture practices and trends, the literature study was used to develop a framework and the Competing Values ​​Framework (CVF) through the Organizational Culture Assessment Instrument (OCAI) was adopted. The framework is also extended for each culture type, which are clan, adhocracy, hierarchy, and market into six-key dimensions. The population in this study was 26 large-size construction companies in East Java. The organizational culture practices results found that the dimensions of employee participation, innovation culture, reward, punishment, and teamwork orientation still need to be fully implemented (level 3). Meanwhile, the performance emphasis factor has been fully implemented (level 4). Furthermore, the trend of companies’ culture types is clan culture, where the dominance of cultural types from the strongest to the weakest are clan, market, hierarchy, and adhocracy, with values of 27.51, 26.35, 24.87, and 21.27 respectively. This observation contributes to enriching the study of organizational culture in construction area.
Analysis the Influence of Manpower, Material, Machine, Method, Money and Environment on the Time Performance of Implementing Cold Storage Building Projects Nurrizky, Febrian Eka; Suroso, Agus; Amin, Mawardi
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.16389

Abstract

Cold Storage Building is a building specifically designed to maintain room temperature in very cold conditions which functions as a commodity preservation area so that it can be stored fresh for a long period of time. When constructing a Cold Storage Building, a very specialist construction process is required. Therefore, it must be carried out using a certain construction method (modular construction), using special Materials (sandwich panels), requiring several specialist subcons & a lack of experienced workers. These conditions make the challenge of building a Cold Storage Building more difficult, which can affect the time performance of the project. This research aims to analyze factors that can influence time performance in the implementation of the Cold Storage Building construction project using the Multiple Linear Regression Analysis method. Based on data analysis, the equation Y = 3.166 + 0.108 X1 + 0.208 X2 + 0.040 X3 + 0.112 X4 + 0.164 Based on the results of the Coefficient of Determination Test, simultaneously Manpower Factors (X1), Material Factors (X2), Machine Factors (X3), Method Factors (X4), Money Factors (X5) and Environment Factors (X6) have an influence contribution of 87.6 % of Time Performance (Y). Meanwhile, for the results of the most dominant factors analysis using Beta Standardized x Zero-Order, it was found that the Material Factors (X2) was the most dominant factors that could influence time performance with an influence value of 34.01%. Considerations in determining alternative solutions to improve time performance on Cold Storage Building construction projects are carried out on the most dominant factors, namely the Material Factors (X2).
Factors that Influence the selection of Reservoir Construction Providers using the E-Purchasing Method via Electronic Catalog Putra, Aditya; Biantoro, Agung Wahyudi
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.16391

Abstract

The implementation of Electronic Catalog Purchasing in the Construction Sector for Reservoir Development carried out by the DKI Jakarta Provincial Water Resources Service is something new in Indonesia and includes the implementation/utilization of the Risk-Based Construction Sector Catalog, so catalog users need to have adequate technical understanding of the field and be able to mitigate risks. Apart from that, the product specifications and prices displayed by Business Actors are not yet final, therefore, at the purchasing stage a "Correction" process is required by the prospective Buyer (in this case the Commitment Making Officer (PPK)/Procurement Official (PP)) and the selection of the appropriate construction service provider. Using e-purchasing methods is influenced by many factors. So to get a service provider who is competent in carrying out construction contracts, it is hoped that the results of selecting a good provider. This makes budget users need what and dominant factors influence the selection of construction service providers using the e-purchasing method. The research method used is the Quantitative Method by processing the research instrument data in the form of a Questionnaire, then data management is carried out using the Statistical Product and Service Solutions (SPSS) Method for the Questionnaire validity test, Questionnaire reliability test, correlation test, Factor Analysis test and RII (Relative Important Index). ). With the results of the sequence of sub-factors that influence service users in determining the selection of a reservoir construction provider using the E-purchasing method via an electronic catalog, namely: RII: 0.967), and Management of the business entity is not under criminal proceedings (RII: 0.963), 0.958), 0.949) and Variable X1 Administrative Qualification Criteria is the dominant factor variable.
Analysis of Contract Change Order (CCO) Factors, which Affect the Fly Over Work (Case Study of The Cisauk Fly Over Development Project) Sukardi, Indra Mahendra; Biantoro, Agung Wahyudi
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.16392

Abstract

Every project can be guaranteed to experience change orders, which occur at the request of the contractor or owner. Change orders are governed by the terms of the contract. So the projects carried out are usually carried out with results that are not in accordance with what was planned. This research aims to find out what factors cause Contract Change Orders (CCO), which influence the Cisauk flyover work, Tangerang Regency. This research was conducted by distributing questionnaires and respondents to the Cisauk flyover construction project, Tangerang Regency. The research method uses quantitative analysis and questionnaire data processing using Statistic program with the analysis method of questionnaire validity test, questionnaire reliability test, correlation test, factor analysis test and Relative Important Index (RII). The results of the research obtained a ranking order for each factor and obtained the dominant factors that influence the occurrence of a Contract Change Order (CCO). There are 6 (six) research variables for problem formulation, namely contract documents (X1), planning and design (X2), owner involvement (X3), environmental or external conditions (X4), contractors (X5), and resources (X6), Factors that influence the occurrence of a Contract Change Order (CCO) for the Cisauk flyover work based on ranking order 1 to 5 are X.2.5 mismatch between design drawings and field conditions (RII: 0.814), X.2.1 Errors in planning drawings (RII : 0.745), The most dominant factor influencing the occurrence of a Contract Change Order (CCO) on the Cisauk fly over project is the indicator that comes from variable X2, namely planning and design.
Analysis of the Influence of the Level of Implementation of the Occupational Safety and Health Management System (SMK3) on the Accident Rate in Housing Projects Adha, Muhammad Fajar; Suroso, Agus
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.16410

Abstract

The so-called Occupational Safety and Health Management System (SMK3) is part of the overall management system which includes organizational structure, planning, responsibilities, implementation, procedures, processes, and resources needed for the development, implementation, achievement, review, and maintenance of K3 policy in the context of controlling work-related risks to create a safe, efficient and timely workplace. An accident is an unexpected event that results in serious injury or illness to an employee and can result in property damage. The aim of this research, based on the background and problem formulation above, is to determine the factors that influence the Occupational Safety and Health Management System (SMK3) in Housing Development projects and to analyze the factors that significantly influence the Occupational Safety and Health Management System (SMK3) on Housing Development projects. The methods used are surveys, interviews, and data analysis in the field. The identified SMK3 risk factors include non-compliance with work safety procedures, lack of SMK3 training or certification for workers, unsafe work environment conditions, use of unsafe equipment or machines, inaccuracy or negligence of workers, and lack of personal protection or adequate safety equipment. To overcome this risk, strict and appropriate SMK3 standards are needed. Safety regulations not implemented in the project environment make the level of health and safety fall into the low category. Jobs that are at risk of causing work accidents.
Enhancing Risk Management in the SPALD Project Hasan, Nining Ardiyanti; Hidayat, Acep; Amin, Mawardi
ASTONJADRO Vol. 14 No. 1 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i1.16447

Abstract

The SPALD Project is currently undergoing a survey phase to gather data on perceptions and experiences related to risks. Data analysis has been conducted using statistical methods to explore the relationship between risk identification and risk management effectiveness in the context of the SPALD project. The analysis results indicate a significant positive correlation between risk identification and risk management effectiveness, with a correlation coefficient of 0.75 (p < 0.01). Regression analysis indicates that the risk identification variable significantly predicts risk management effectiveness (F(1, 123) = 64.32, p < 0.001), with a coefficient of determination (R squared) of 0.52. These findings affirm that enhancing the risk identification process meticulously and comprehensively can enhance risk management effectiveness in the SPALD project in DKI Jakarta. Recommendations for this project include initial risk identification, the use of adaptive risk management systems, implementation of analysis-based mitigation strategies, and team awareness enhancement. These recommendations aim to enhance risk management effectiveness, achieve project objectives, and mitigate potential negative impacts.

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