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All Journal WIDYA TEKNIKA The Spirit of Society Journal : International Journal of Society Development and Engagement International Journal of Social Service and Research JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS (JHSSB) COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat International Journal Science and Technology (IJST) TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES (TIRES) International Journal on Advanced Technology, Engineering, and Information System (IJATEIS) INJURITY: Journal of Interdisciplinary Studies Jurnal Teknik Indonesia Jurnal Spesialis Teknik Sipil (JSpTS) Enrichment: Journal of Multidisciplinary Research and Development Advances In Social Humanities Research
Laksono Djoko Nugroho
Jurusan Teknik Sipil - Universitas Bojonegoro Jawa Timur
Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Physics Public Health Social Sciences Transportation Other

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IMPROVING MOBILITY IN KEDIRI CITY WITH MKJI ANALYSIS 1997 AND TIME SLICE AT SIMPANG EMPAT DHOHO PLAZA Hidiyati, Evita Fitrianis; Nugroho, Laksono Djoko; Haris Muhammadun
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1110

Abstract

The city of Kediri, as the third largest city in East Java, has cultural heritage, history and natural beauty that attracts visitors from various regions. However, population growth and motorized vehicles cause traffic jams. Signalized intersections, which are a solution to control intersection conflicts, require knowledge of intersection saturation flows to plan efficient traffic management. Analysis methods such as MKJI 1997 and Time Slice with Vehicle Operating Cost (BOK) calculations help design effective solutions. This research shows that adjusting cycle times, increasing effective width, and optimizing signals can improve transportation system performance and reduce congestion in Kediri City. Cycle time analysis taking into account factors such as vehicle type, traffic volume, and vehicle speed resulted in a cycle time of 90.7 seconds. The impact can be seen in the Degree of Saturation (DS) at various intersection arms, with service variations from E to F. Research also shows a decrease in waiting time/queuing for signal lights from 135 seconds to 118 seconds, which results in a decrease in the degree of saturation (DS) and changes in time cycle. The use of Smart Traffic Lights and traffic engineering, such as immediate left turns on the east arm and additional signs, is required. Evaluation of congestion cost efficiency shows that changing the value of side barriers can save Rp. 22,679,183 in the next five years.
ANALYSIS OF INVESTMENT SENDITIVITY IN TAMAN MELATI DINOYO APARTMENT, MALANG CITY Classinta ARD, Bella Astrina; Muhammadun, Haris; Nugroho, Laksono Djoko
JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS Vol. 3 No. 2 (2024): FEBRUARY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/jhssb.v3i2.1017

Abstract

This research investigates the investment potential of Taman Melati Dinoyo Apartment in Malang City, focusing on economic and property market analysis. This research identifies the main factors affecting apartment investment, including property prices, construction costs, occupancy rates, and interest rates. Through a comprehensive literature review and primary data collection through interviews, the research provides insights for property developers, highlighting potential risks and effective mitigation strategies. The proposed investment structure involves a 30% equity and 70% borrowing ratio. Analysis methods such as NPV, IRR, BCR, and Payback Period are used for financial assessment. The Taman Melati Dinoyo Apartment Project in Malang City is financially feasible, with a NJOP value of Rp. 418,462,580,000. The NPV value is positive at Rp. 55,585,691,096, although the IRR is slightly below MARR at -8.99%. The BCR is 0.7997, indicating the project is less than 1, and the payback period is reached in the second year at IDR 186,959,656. Sensitivity analysis showed feasibility even with an increase in investment by 38% and a decrease in revenue by 20%
Analisis Prediksi Kondisi Kekerasan Jalan Raya menggunakan Aplikasi IRI untuk Penanganan Jalan (Studi Kasus: Ruas Jalan Nasional Kota Jalan Nasional Kota Ruas, Gresik-Sadang) Kogoya, Desmin; Nugroho, Laksono Djoko; Oetomo, Wateno
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 5 No 2 (2024)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v5i2.12065

Abstract

Road pavement conditions will overcome the decline in service levels over time. The decline in the level of road services is characterized by the occurrence of damage to the structure of the pavement layer of the road and left in a long period of time it will be able to renew the level of the layer of security that can increase security, comfort, and smoothness in crossing. The purpose of this study is to analyze the influence of traffic, pavement structure and CBR on the value of road IRI and estimation of road pavement conditions in the next 10 years. The data used in this research are traffic load, CBR, rainfall and road pavement structure. The analysis was carried out using a method developed by IRI (International Roughness Index) to predict road conditions. Data collection was carried out by surveying road damage using the ROADROID application and (RCI) the Road Condition Index as preliminary data. This research will be applied to data collected from the national road network in East Java province, specifically the Bts national road section. Gresik City - Sadang. To facilitate analysis, the road segment is divided into 3 segments with the length of each km segment starting from Km 20 to Km 40. The results of data analysis show an increase in traffic load of 31% will result in an increase in IRI value of 0.061 m / km per year, a structural value of 11.32% resulting in an increase in IRI of 0.034 m / km per growth, based on a CBR of 38% resulting in an increase IRI value of 0.017 m / km per year. The predicted results of road pavement conditions on Km 40, 20 and 20 sections are minor damaged roads, for Km 20, 40 routine maintenance sections.
FEASIBILITY ANALYSIS OF A BATCHING PLANT INVESTMENT FOR THE KEDIRI-TULUNGAGUNG TOLL ROAD PROJECT Suwito, Suwito; Nugroho, Laksono Djoko; Muhammadun, Haris
International Journal of Social Service and Research Vol. 5 No. 1 (2025): International Journal of Social Service and Research
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/ijssr.v5i1.1183

Abstract

This study evaluates the feasibility of establishing a batching plant for the Kediri-Tulungagung toll road construction, specifically for the Dhoho Kediris Airport toll access, section 2. Observations were conducted with key stakeholders at the project site, including concrete production costs, operational schedules, and potential bottlenecks. The data was analyzed using a quantitative approach with statistical software, focusing on investment feasibility indicators such as Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period (Rohman & Husin, 2024). The results of the analysis show that the NPV is IDR5,599,938,029.34 with IRR reaching 82.71%, far above the Minimum Attractive Ratio (MARR) of 12%. In addition, the efficiency of concrete distribution time to the site improved daily work productivity. This study provides critical insights into the logistical, economic, and operational aspects of setting up a batchesing plant, which is essential for ensuring the efficient production of concrete required for the construction project. The findings can serve as a valuable reference for future projects in similar contexts, enhancing the planning and execution of toll roads in Indonesia.
Analysis of the Construction of Infiltration Wells in Pondok Jati Housing, Sidoarjo to Reduce Surface Flow for Flood Prevention Efforts Fathurokman, Hasan Alif; Wulandari, Esti; Nugroho, Laksono Djoko
TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES Vol. 4 No. 1 (2025): JANUARY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/tires.v4i1.1561

Abstract

Water stored on the surface generally turns into runoff and much faster than groundwater considering the very low flow rate of the latter. Drainage of the Pondok Jati residential area is less able to receive or accommodate rainwater discharge because the development and growth of a city is one of the triggers for increasing the volume of discharge that passes through the residential area. Land use will affect the percentage of water that seeps into the soil with surface flow. Land with dense populations and many buildings, infiltration wells must be made more and larger in volume. Either with individual infiltration wells or with infiltration wells collectively for several houses, the need for infiltration wells from each block to reduce runoff that occurs with a 10-year return period plan. For the specifications of this infiltration well, concrete pipes are used. This infiltration well itself has concrete pipe walls with a diameter of 100 cm (1 meter) with the depth of the infiltration well is 300 cm (3.0 meters) and the number of points needed. The cost of making an infiltration well with a total of 210 infiltration wells in the Pondok Jati Sidoarjo housing complex is Rp. 696.358.600,- .
Optimization of Road Handling Priorities Using Provincial/District Roads Management System Integration and Analytical Hierarchy Process at UPT PJJ Surabaya, East Java Farida, Nur Aini; Nugroho, Laksono Djoko; Muhammadun, Haris
TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES Vol. 4 No. 1 (2025): JANUARY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/tires.v4i1.1568

Abstract

This study aims to identify the priority order for road maintenance on road sections under the Surabaya Road and Bridge Management Unit (UPT PJJ Surabaya) in East Java Province by utilizing the Provincial/District Roads Management System (PKRMS) application integrated with the Analytical Hierarchy Process (AHP) method. Additionally, the study seeks to estimate the required costs for implementing the road maintenance. The research adopts a quantitative approach with a positivist philosophy. The study population consists of 123 employees from the East Java Provincial Public Works and Highways Agency, with a sample of 33 respondents selected using purposive sampling techniques. Data were collected using a mixed-method approach, involving road condition surveys conducted through the Moving Car Observer (MCO) method and a literature review. Data analysis was conducted systematically using a combination of PKRMS and AHP. The results indicate that the top-priority road section for maintenance, based on the integration of PKRMS and AHP, is the Sumberwudi–Karang Geneng section, which obtained the highest Priority Index Score (TPI) of 56. The estimated cost required for maintaining this road section is Rp16,475,545,104.98. The integration of PKRMS and AHP provides an objective, efficient, and data-driven approach, enabling local governments to optimize budgets and extend the lifespan of road infrastructure. This study recommends that local governments consistently adopt the combination of PKRMS and AHP in road infrastructure management to ensure more targeted budget allocation and enhance transparency in decision-making processes.
Analysis of Road Infrastructure Condition Based on Traffic Density in Bengkulu City Pujiyono, Sugeng; Nugroho, Laksono Djoko; Muhammadun, Haris
TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES Vol. 4 No. 1 (2025): JANUARY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/tires.v4i1.1590

Abstract

The purpose of this research is to explain the analysis of road infrastructure conditions, in terms of traffic density and road quality in Bengkulu City. The research method uses descriptive with qualitative approach, Research Subjects, are people and government institutions, key informants are all people or officials related to road infrastructure policy makers, traffic density and road quality, such as traffic police, transportation department, PUPR department, BPS Bengkulu City. Informants are people or government institutions/institutions that are the object of research, the number is determined based on the criteria of this research. in the form of structured questions for interviews to Informants, Key informants and Triangulation of data. Data Collection Techniques present the sampling methods and data collection techniques used, such as field surveys, direct observation, or the use of secondary data. The results of the analysis using Neil S. Grigg's Infrastructure Management theory state that the condition of Road Infrastructure in Bengkulu City is good based on the criteria of the transport system (roads and bridges), clean water and sanitation systems and energy and other public facilities.
Analysis of Work Network and Critical Trajectory on Penganten - Ngampal Road Reconstruction Project Using Critical Path Method (CPM) Al-Putro, Akmal Puguh; Nugroho, Laksono Djoko; Muhammadun, Haris
TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES Vol. 4 No. 1 (2025): JANUARY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/tires.v4i1.1599

Abstract

The Reconstruction Project of Penganten-Ngampal Road in Bojonegoro Regency faces challenges in time and resource management, leading to project delays. These delays affect time and cost efficiency, which are key issues in achieving the project's objectives. To address this problem, this study aims to analyze the project’s work schedule and critical path using the Critical Path Method (CPM). The research employs a quantitative method, with data collected through primary and secondary data sources. Primary data was obtained through field observations and questionnaires, while secondary data was gathered from project documents and relevant literature. Using CPM, the first step was to construct the project’s work schedule based on the work breakdown structure (WBS) and the relationships between activities. An analysis was then performed utilizing forward pass and backward pass methods to identify the critical path. This path comprises tasks that require timely completion to avoid causing additional project delays. The results show that the critical path for the Penganten-Ngampal Road Reconstruction Project is identified in activities with codes A, C, D, E, and F. The total project completion duration based on the analysis is 47 days. Activities on this critical path must be completed on time, as delays in any of these activities will affect the overall completion of the project. Therefore, better time management and proper resource allocation for critical activities are essential to complete the project according to the planned timeline.
Analysis of Factors Affecting Clean Water Service in Dili City Gomes, Orlando; Wulandari, Esti; Nugroho, Laksono Djoko
TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES Vol. 4 No. 2 (2025): APRIL
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/tires.v4i2.1603

Abstract

Availability of clean water is a basic need in Dili City, Timor Leste, but uneven distribution, inadequate infrastructure, and limited resources are the main challenges. This study aims to analyze the factors that influence clean water services. The research method included multiple linear regression analysis to identify influential factors. Data was obtained through surveys, interviews, official reports and literature review. The results showed that piping distance and number of family members positively influenced water quality and quantity, while household income tended to decrease water quality and quantity. Expenditure on clean water improves water quality and quantity. For water continuity, the number of people in the family had a strong positive effect, while other factors had a negative effect. The coefficient of determination for water quality is 5.3%, water quantity 20.9%, and water continuity 5.9%, indicating that many other factors influence water services in Dili City.
Risk Analysis and Risk Response in the Implementation of the Construction of a Special Oncology Hospital in Bojonegoro Rahayuningsih, Titin; Nugroho, Laksono Djoko; Muhammadun, Haris
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 4 No. 1 (2025): FEBRUARY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v4i1.1563

Abstract

This study aims to identify risks, conduct risk analysis with the severity index method, and determine responses to risks that occur in the implementation of the Bojonegoro Regency Oncology Special Hospital Phase 2 construction work. From the results of risk identification, there are 31 risks grouped into 8 variables. After analysing the data with the severity index method, which is a technique used in calculating the probability value and also the impact, the results obtained were 3 risks in the medium category and 2 risks in the high category. The 5 dominant risks require a risk response. Risk responses to reduce the negative impact of project delays, especially for risks in the high category, include the risk of uncertain weather by planning the scheduling of large works such as casting so that they are not carried out during the rainy season. The risk of unavailability of labour in the field by cooperating with other subcontractors to help complete certain parts of the project.
Co-Authors Abid, Luthfil Al-Putro, Akmal Puguh Classinta ARD, Bella Astrina Esti Wulandari Evita Fitrianis Hidiyati Farida, Nur Aini Fathurokman, Hasan Alif Gode, Dicky Gomes, Orlando Haris Muhammadun Hidiyati, Evita Fitrianis Hudyantoro, Hudyantoro Ikko Bagus Ismanto Irwansyah Digma Pratama Jarwoto, Jarwoto John, Jenodius Aldino Kogoya, Desmin Mawardianto, Hayadi Agus Maya Yusnita Muhammadun, Haris N. Nazaruddin Nopriyanto, Dwi Erry Nurrahmat, Ean Fadhillah Oetomo, Wateno Prasetyo, Baskoro Adhi Pujiyono, Sugeng Purbo, Atma Djendra Rahayuningsih, Titin Rahman, Medio Duddian Wahyu Ratuinsani, Tati Mushalihati Rumihin, Ony Frengky Sajiyo Sajiyo, Sajiyo Sartiyana, I Ktut Riagung Septoraharjo, Eko Rony Setiyo, Anugrah Dwi Subandriyo, Putut Subroto, Tisno Suwito Suwito Wulandari , Esti