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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 537 Documents
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Performance Evaluation of Construction Waste Management through a Sustainable Development Approach (Case Study: Green Plesungan Housing Project Development) Abdullah, Muhammad Ma'mun Harits; Solikin, Mochamad; Mutiari, Dhani; Harnaeni, Senja Rum
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.20751

Abstract

The continuous growth of infrastructure development in Indonesia has led to a significant increase in construction waste, impacting project costs and environmental sustainability. This study aims to evaluate the performance of construction waste management using a sustainable development approach in the Green Plesungan Housing Project. The research employed a quantitative approach through site observations, technical data collection, and questionnaire distribution to 30 construction stakeholders. The evaluation began with the calculation of waste materials, waste levels, and waste costs, followed by statistical analyses including instrument testing, classical assumption testing, multiple linear regression, simultaneous and partial tests, the coefficient of determination test, as well as the formulation of recommended steps to minimize waste. The study identified 16 types of construction waste, with structural works being the largest contributors. The total waste cost reached 3.48% of the material contract value of Rp. 33,617,860.77, with lightweight bricks contributing the highest cost at 1.06%, amounting to Rp. 10,275,739.37. Statistical results indicated that six out of seven variables significantly influenced the implementation of sustainable practices, with a contribution of 95.4%. Site supervision, on-site execution, and environmental conditions were identified as the dominant factors contributing to waste production. The proposed strategies to minimize waste include enhancing planning accuracy, improving logistics management, promoting disciplined and efficient execution, and strengthening site supervision. This study provides valuable insights for developing integrated construction waste management strategies that not only reduce waste costs but also support the realization of sustainable and efficient housing development in the future.
Effect of Residual Cake Steryl Glucoside Co-Firing Ratio on Boiler Combustion, Efficiency and Fuel Cost Valentino, Andreas Alvaro; Hadiyanto, Hadiyanto; Suedy, Sri Widodo Agung
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.20766

Abstract

Steryl Glucosides (SG) are compounds produced from the processing of Fatty Acid Methyl Ester (FAME). SG compounds are obtained from the FAME filtration process using filter aid media. The filtering process produces residue in solids mixed with SG compounds (residual cake SG). Previous studies have shown that SG has a high calorific value and good combustion characteristics. However, the research is still on a laboratory scale. Another study states SG has a high energy density due to its characteristics, which include a long hydrocarbon chain. These make SG very potential to be utilized as a secondary co-firing fuel in boilers. Implementing co-firing could minimize coal consumption and lead to a reduction of carbon emissions. Furthermore, several studies found that co-firing could increase the boiler efficiency and reduce the fuel cost. This study aims to determine the effect of the residual cake co-firing ratio on the combustion, efficiency, and fuel cost of the stoker boiler. The research was conducted directly on the stoker boiler with a ratio of residual cake SG 5 wt%, 10 wt%, and 15 wt%. Based on the trial, increasing the residual cake SG ratio will improve the boiler combustion, increase efficiency up to 8%, and reduce the fuel cost.
Balinese Local Wisdom Integration Model in Spatial Planning: An Analysis of the Implementation of Tri Hita Karana and Sad Kerthi in Spatial Planning Dwipayana, I Made; Putra, I Dewa Gede Agung Diasana; Dwijendra, Ngakan Ketut Acwin; Adhika, I Made
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.20789

Abstract

This study aims to analyze the extent to which the values of Balinese local wisdom, particularly the philosophy of Tri Hita Karana and Sad Kerthi, are integrated into spatial planning regulations in the Province of Bali, as well as to identify their implementation challenges. This study uses a qualitative method with a multi-layered approach, combining field observations, in-depth interviews, normative juridical analysis of RTRW/RDTR regulations, and spatial mapping based on Geospatial Information Systems (GIS). The results show that, although local regulations have adopted local principles such as regulating sacred areas, setting building height limits, and establishing ravine boundaries, violations are still rampant, mainly due to weak oversight, economic conflicts of interest, and technical zoning standards that are not accommodating to small-scale cultural sites. This article proposes integration based on community participation through the revision of zoning parameters, the preparation of special Zoning Regulatory Techniques (TPZ), and the strengthening of the legal framework in the RDTR/RTRW. The synergy between a regulation-based top-down approach and a bottom-up approach based on local wisdom is the key to the success of the sustainable protection of Bali's cultural and ecological landscape. This research contributes to the development of contextual spatial models that bridge the value of modern traditions and policies in the era of digitization of licensing.
Performance Evaluation of a Construction Materials Testing Laboratory in the Implementation of ISO/IEC 17025:2017 Azhari, Firdha Aulia Ariyani; Anas, Muhammad Ridwan; Mulia , Ahmad Perwira; Hasibuan, Gina Cynthia Raphita; Mardianta, Anthoni Veery
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.20894

Abstract

Public construction materials laboratories play a vital role in safeguarding infrastructure quality and public safety. Although ISO/IEC 17025:2017 is widely adopted as a quality management system, its actual influence on strategic performance in government laboratories is not well understood. This study evaluates the implementation of ISO/IEC 17025:2017 at a provincial government testing laboratory in North Sumatra, Indonesia, by integrating it with the Balanced Scorecard (BSC) framework. A mixed-methods approach was used involving 60 participants—30 internal personnel and 30 external users—through surveys, interviews, and direct observation. The BSC evaluation produced a performance score of 77.35%, categorized as satisfactory, with the strongest contribution from customer and financial perspectives. This study introduces an integrated evaluation framework tailored to public laboratories, bridging quality compliance with strategic governance. The results highlight the importance of aligning technical quality with institutional accountability, offering a practical pathway for improving performance and public trust in government testing services.
Green Hotel Design Model: Integration of Balinese Architecture and Passive Cooling Systems Gunardhy, Marthin; Putra, I Dewa Gede Agung Diasana; Dwijendra, Ngakan Ketut Acwin; Adhika, I Made
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.20903

Abstract

The hospitality sector in Bali, a major contributor to the island's tourism economy, faces significant challenges in energy consumption, particularly due to reliance on air conditioning systems for thermal comfort. These systems account for over 60% of the total energy use in star-rated hotels. In contrast, traditional Balinese architecture has long utilized passive design strategies—such as cross ventilation, thermal-insulative local materials, and site planning in accordance with Tri Hita Karana philosophy—to achieve indoor comfort without active cooling. This research proposes a green building design model that integrates traditional Balinese architectural elements with modern passive cooling technologies. The study employs a mixed-methods approach: qualitative data were obtained from interviews with architects, hotel managers, and users; quantitative data were collected through energy consumption measurements (kWh/m²/year) before and after passive design interventions. Four hotel areas—Sanur, Kuta, Ubud, and Nusa Dua—were selected as case studies. Results show that cross-ventilation and traditional spatial arrangements can reduce indoor temperatures by an average of 3.2°C, lowering energy use by 20–30%. Integration with reflective coatings, thermal insulation, and double-glazed windows further improves energy performance, achieving up to 32.4% reduction. This model demonstrates strong acceptance by users and is contextually adaptive to coastal microclimates. The research contributes a validated, culturally grounded green design framework, bridging local wisdom with sustainable development imperatives in tropical tourism zones.
Impact of Spatial Planning at Alun-Alun Gianyar Daniswara, I Gusti Putu Bagus; Dwijendra, Ngakan Ketut Acwin
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.21027

Abstract

Alun-Alun Kota Gianyar is a public space located at the center of Gianyar City. It is frequently utilized by the local community for sports, relaxation, and recreation. In 2020, the Gianyar Regency Government decided to renovate and redesign the square. The development of Alun-Alun Kota Gianyar has led to emerging business opportunities, as evidenced by the increasing number of shops and commercial activities around the area. This study aims to illustrate the role of Alun-Alun Kota Gianyar as a public space in stimulating economic growth, particularly through the increase of community income, the creation of new job opportunities, and the emergence of local businesses. The research adopts a qualitative descriptive method, with data obtained through direct observation and interviews with visitors and business actors around Alun-Alun Kota Gianyar. The objective is to examine the economic impact of the square, particularly for local entrepreneurs. The findings indicate that Alun-Alun Kota Gianyar has positively influenced the economic growth of local business actors. The data reveals a shift in business functions around the square before and after the renovation, along with a 14.9% increase in profits for stall and shop owners, and an 18.1% increase for street vendors (PKL), driven by the higher number of visitors attracted to the area.
Analysis of Rigid Pavement Thickness Using the AASHTO 1993 and MDPJ 2024 Methods Ramadhani, Amertya; Rizal, Rikki Sofyan
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.21031

Abstract

Rigid pavement is an important feature of highway infrastructure because it can handle heavy traffic and move it quickly to the subgrade. This study on Section IIB of the Jakarta–Cikampek II South Toll Road Project used two different ways to construct rigid pavement: one that is used all over the world and one that is exclusive to Indonesia. Each approach utilises a different way of analysing that is based on the criteria and conditions of the context in which it is used. The results showed that the first method made a pavement thickness of 28 cm, whereas the second method made a thickness of 29,5 cm. This difference has a big effect on the total cost of building the 13 km toll road segment, which is Rp139.390.857.060,00 for the first method and Rp156.801.134.100,00 for the second. Choosing the ideal design strategy for a pavement solution that is both optimal and long-lasting should take into account local factors, project needs, and cost-effectiveness.
Thermoplastic Waste Composite Brick As An Environmentally Friendly Material Safarizki, Hendramawat Aski; Ristanto, Iwan; Sangadji, Senot; Karno, Muhammad Febrialdi; Dewi, Amelia Putri
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.21105

Abstract

The background of this research is that plastic waste is abundantly available around us and has not been optimally utilized. Pedestrian which is also the right of pedestrians with disabilities has not been well organized in Indonesia. The use of plastic waste materials is an alternative to solving environmental problems. The utilization of plastic as a substitute for cement will also reduce the carbon effect of cement as a building material. With its light weight when compared to disabled terrazzo tiles on the market, it is hoped that it can facilitate the application of smart pedestrian blocks as pedestrian paths and disabilities. The purpose of this research is the utilization of plastic waste as used as composite thermoplastic waste brick as well as an alternative eco friendly material. The experimental method used normal paving, 45% plastic waste, 55% plastic waste, and 65% plastic waste. The test results show that the average compressive strength for paving with 45% plastic waste has a compressive strength of 9.16 MPa higher than normal paving which is only 8.56 MPa. This shows that the use of 45% plastic waste as an effective substitute for cement in paving is also an environmentally friendly solution. In addition to reducing plastic waste, it also reduces the need for cement.
A Comparative Analysis of Conventional and Hybrid Simulation in Tropical Hotel Energy Modeling Young, Hepi Duchovny; Setyowati , Erni; Prianto, Eddy; Dwiyanto, Agung
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.21182

Abstract

The hospitality industry in tropical climates faces significant challenges in managing energy use while trying to make buildings that are environmentally friendly in areas with high temperatures, humidity, and changing weather.  Hotels in places like Southeast Asia, the Caribbean, and sub-Saharan Africa usually use a lot of energy each year. This is mainly because they need heating, cooling, and lighting, which raises costs and harms the environment.  As tourism increases and climate change becomes more of a problem, energy-efficient hotel designs and sustainability metrics have become more critical in international policy frameworks. This systematic literature review assesses the efficacy of hybrid simulation methodologies, combining various modeling tools to evaluate climatic impacts on enhancing energy efficiency and sustainability in tropical hotels, in contrast to conventional standalone simulations.  Using a strict PRISMA-guided method, searches of databases found 95 records, which led to one relevant observational modeling study of medium-category Mexican hotels.  This study showed a statistically significant drop in CO2 emissions and energy use per room-year, with older guests seeing the most benefits. The review shows that hybrid simulation has a lot of potential to improve hotel energy systems and make operations more sustainable, even though the sample size is small, the data is simulated, and there is no meta-analysis.  Practical implications encompass the endorsement of pilot implementations, personnel training, and collaborations to mitigate financial obstacles.  The review also points out significant research gaps, like a lack of long-term data and a lack of representation for tropical regions. This shows that more empirical research is needed. In general, using hybrid simulation methods could make hotels in tropical climates more energy-efficient and better able to handle environmental changes, which would help the hospitality industry become more sustainable.
Occupational Safety and Health Evaluation Using the Hazard Identification Risk Assessment and Risk Control (HIRARC) Method Based on Ergonomics Napitupulu, Daniel Willyam; Irwan, Hery
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.21231

Abstract

PT. XYZ is a medium-sized shipbuilding company engaged in ship repair, maintenance, and new shipbuilding services. The company faces a high potential for workplace accidents in Workshop Area 01, Shelter 05, and the Jetty Area. This study aims to analyze and evaluate workplace hazard potential using the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method, based on ergonomic principles. The research methodology employed a quantitative and qualitative approach through observation, interviews, and the distribution of questionnaires to 78 workers. The novelty of this study lies in the integration of ergonomic principles into the HIRARC analysis to assess and control workplace accident risks. The analysis results identified 15 categories of potential hazards, with details as follows: 5 low-risk, 8 moderate-risk, and 2 high-risk hazards. High-risk hazards were identified in grinding and plate-cutting activities, which require immediate control measures. Control measures were implemented through the use of personal protective equipment (PPE), technical engineering, administrative measures, and worker education. This study concludes that the integration of ergonomics into HIRARC effectively helps companies identify and reduce workplace accident risks while improving workplace safety and comfort.

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