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All Journal Jurnal Teknik Sipil JHP17 (Jurnal Hasil Penelitian) The Spirit of Society Journal : International Journal of Society Development and Engagement EXTRAPOLASI: Jurnal Teknik Sipil Jurnal Review Pendidikan dan Pengajaran (JRPP) Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Teknik Industri Terintegrasi (JUTIN) International Journal Of Science, Technology & Management (IJSTM) Devotion: Journal of Research and Community Service Extrapolasi International Journal of Social Service and Research JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS (JHSSB) Jurnal Rekayasa Teknik Sipil dan Lingkungan Journal Of World Science Journal Of Human And Education (JAHE) International Journal Science and Technology (IJST) Journal of Management, Accounting, General Finance and International Economic Issues (MARGINAL) International Journal on Advanced Technology, Engineering, and Information System (IJATEIS) INJURITY: Journal of Interdisciplinary Studies Journal Research of Social Science, Economics, and Management Eduvest - Journal of Universal Studies Jurnal Ekonomi, Teknologi dan Bisnis Jurnal Teknik Indonesia Enrichment: Journal of Multidisciplinary Research and Development Asian Journal of Social and Humanities International Journal of Social Science and Community Service
Budi Witjaksana, Budi
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Cost Analysis of Road Performance Improvement on Yos Sudarso Road, Baubau City Nasir, Jamiludin; Witjaksana, Budi; Purnama, Jaka
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 10 (2026): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i10.607

Abstract

Yos Sudarso Road in Baubau City is a major urban corridor that has experienced a decline in traffic performance due to intensive activities in commercial, tourism, and port areas, resulting in high side friction caused by on-street parking and vehicle maneuvering. These conditions reduce the effective road capacity and degrade the level of service. This study aims to estimate the cost required to improve road performance as a basis for practical and applicable traffic management recommendations. The research employs a quantitative approach by identifying improvement alternatives, calculating work volumes, and estimating costs based on the 2022 Indonesian Public Works Unit Price Analysis (Analisa Harga Satuan Pekerjaan, AHSP) for Road and Bridge Works and the 2024 Baubau City Standard Unit Cost (Harga Satuan Pokok Kegiatan, HSPK). The results indicate that traffic management measures in the form of one-side on-street parking arrangement and installation of no-parking traffic signs require a total cost of IDR 57,000,000.00. This cost is relatively economical and effective in improving road capacity and traffic performance without physical road widening.
Topographical Challenges and Cost Risk Management in Road Construction: Integrating Design Analysis and Unit Price Method (AHSP) in Hilly Areas of Indonesia Rustam, Rustam; Witjaksana, Budi; Purnama, Jaka
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 10 (2026): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i10.608

Abstract

Road construction in hilly regions of Indonesia presents complex technical and financial challenges due to extreme topographical variations. This study examines the integration of technical design analysis with the Indonesian Standard Unit Price Method (AHSP) to improve cost estimation accuracy and risk management. Using the Batauga–Sampolawa road project in South Buton Regency as a case study, the research analyzes how longsection and cross-section designs influence earthwork volumes and subsequent cost structures. Results indicate that hilly topography necessitates significant slope stabilization measures and unbalanced cut-fill volumes, directly impacting cost distribution. Through AHSP-based cost projection for 2025, the study identifies critical risk factors including fuel price volatility, material classification uncertainties, and equipment productivity in steep terrain. The research demonstrates that an integrated design-cost approach enables more realistic budgeting and proactive risk mitigation in hilly road projects. Recommendations include the adoption of digital terrain modeling, AHSP adjustment factors for hilly conditions, and contingency planning for geotechnical uncertainties.
Acceleration Cost Analysis with Critical Path Method: (Case Study on Jakarta Sewerage Development Project Zone 1, Package 2: Construction of Wastewater Sewers in Area 1-1) Hartawan, Ade Sholeh; Witjaksana, Budi; Wulandari, Esti
International Journal of Social Science and Community Service Vol. 2 No. 4 (2024): OCTOBER
Publisher : CV. Proaksara Global Transeduka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70865/ijsscs.v2i4.11

Abstract

In a construction project, preparation work typically includes tasks related to setting up work facilities, conducting field investigations, obtaining permits, and non-structural activities. The Jakarta Sewerage Development Project Zone 1, Package 2, which involves the construction of sewers in Area 1-1, is currently in the preparation phase and is experiencing challenges due to a complex permit process. This has led to minimal progress as the initial project planning did not consider the time needed to secure the necessary permits for implementation. The author is therefore evaluating the project timeline to gauge performance during the preparation phase before actual construction begins. This study utilizes the Critical Path Method (CPM) scheduling technique in Microsoft Project to pinpoint critical activities. Upon analysis, it was found that the budget plan for Package 2 of the Jakarta Sewerage Development Project (Zone 1) was detailed and included various work descriptions, with a total budget of IDR 862,292,086,196. However, delays have occurred, resulting in a 17-day setback in the project schedule, necessitating work acceleration. To bring the project duration back in line with the original schedule as per the contract, acceleration was required. This was carried out on the Shaft Construction C-8.1, which was initially set to take 80 days but was shortened to 63 days through time acceleration, incurring a cost of IDR 23,279,288.
Analysis of Investment Sensitivity in The Construction of The Gelora Bung Tomo Surabaya Circuit Sulistianto, Leo Agus; Witjaksana, Budi; Wulandari, Esti
International Journal of Social Science and Community Service Vol. 2 No. 4 (2024): OCTOBER
Publisher : CV. Proaksara Global Transeduka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70865/ijsscs.v2i4.12

Abstract

Provision of Sports Prasarana is an attempt to fulfill the basic rights of the public to obtain services in sports activities, as listed in Law of the Republic of Indonesia Number 11 of 2022 concerning Sports 2022. The growing automotive industry is one important sector that significantly contributes to Indonesian economic growth. Based on the Surabaya City for 2021-2026 calls for the creation of an integrated area, with the Gelora Bung Tomo area serving as an international sports center and integrating with the growth of trade and service functions in Surabaya's surrounding areas. The aim of this study is to measure the amount of investment income and revenue limits in an effort to reduce the risks associated with the investment in the circuit. We carry out flow calculations using the Net Present Value (NPV), Internal Rate of Return (IRR), Benefit Cost Ratio (BCR), and Payback Period (PP) methods, and then analyze the sensitivity. We reviewed the sensitivity analysis based on several parameters, including commercial rent income and circuit management costs. The development of Tomo's Gelora Circuit is sensitive to a loss of income from the rental of business or commercial premises of 8%, which will affect a decline in profit, resulting in a negative net present value (NPV) and prolonging the rate of return. Additionally, it is sensitive to an increase in management costs by 12%.
Analysis of Cost and Time To Complete of Office Project with The Earned Value Method: (Case study: Office of Bahtera Elang Perak Indonesia Surabaya) Nailufar, Linda; Witjaksana, Budi; Wulandari, Esti
International Journal of Social Science and Community Service Vol. 2 No. 4 (2024): OCTOBER
Publisher : CV. Proaksara Global Transeduka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70865/ijsscs.v2i4.33

Abstract

The rescheduling of the initial schedule carried out on the Bahtera Elang Perak Indonesia Office Construction project has an impact on increasing the duration of work causing the project completion target to be delayed from the time it should be. Increasing the project completion target can affect the amount of costs incurred. The contract value for this office construction project is Rp. 13,908,226,157 with a work duration of 43 weeks to 54 weeks.  The current condition of work progress at week 31 is -0.225% while the total actual cost or that has been incurred during the work is Rp. 3,191,740,254. To overcome this, an analysis is carried out on the value of the estimate at complete (EAC) and time estimate (TE) of the Surabaya BEPI Office Construction Project using the earned value method. This method combines the elements of cost, schedule, and work performance.  The earned value method aims to determine the estimated cost and time of project completion. From the results of the analysis conducted in the 41st week, it was obtained that the estimated cost and time to complete the project implementation (EAC) was 14,289,833,105, - and the estimated time (TE) was 499 days, which was 121 days later than the original schedule.
Evaluation of Drainage System on Public Road in Front of Sidoarjo Religious Court Office Class 1A Ernitasari, Windya Yunesti; Witjaksana, Budi; Patriadi, Andi
International Journal of Social Science and Community Service Vol. 2 No. 3 (2024): JULY
Publisher : CV. Proaksara Global Transeduka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70865/ijsscs.v2i3.46

Abstract

Flooding in front of the Sidoarjo Class 1A Religious Court Office road happens frequently during the rainy season. It disrupts traffic and damages the roads. Flooding is caused by the condition of the drainage channels, which are not performing efficiently due to sediment barriers such as garbage, and some channels appear to be damaged. The existing channels can no longer accommodate the water discharge caused by the rain, thus water overflows from the drainage channels, flooding the main road. These conditions show the importance of handling drainage problems. One of the ways that can be taken is to evaluate the capacity of existing drainage channels.In this study, the evaluation of drainage channel capacity was carried out using the Hydrological and Hydraulics Analysis method. The purpose of this study was to determine the amount of drainage channel storage capacity required to resolve flooding. The results of this study showed that the design rainfall obtained based on the Log Pearson Type III method was 116.583 mm/day with a 5-year return period. The design flood discharge in channel T1 was 0.717 m3/second, while the capacity of the existing tertiary channel T1 = 0.009 m3/second, so the discharge that overflows from the existing channel T1 was 0.708 m3/second. The capacity of the secondary channel S1 was 2.604 m3 /second, whereas the capacity of the primary channel P1 was 43.043 m3 /second. The capacity of the T1 channel was known to be unable to accommodate the design flood discharge. Therefore, alternative treatments were required to ensure that the T1 channel could accommodate the designed flood discharge.
Identifikasi Tiga Risiko Tertinggi terhadap Efektivitas K3 dengan Metode HIRADC pada Proyek Konstruksi Gedung Fakultas Ilmu Budaya Universitas Airlangga Darmawan, Rifky; Witjaksana, Budi
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 2 (2026): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i2.57424

Abstract

This study aims to identify and analyze the effect of OHS implementation on project costs in the construction of the Faculty of Humanities Building at Universitas Airlangga Campus B Surabaya. The method used is Hazard Identification, Risk Assessment and Determining Control (HIRADC) to identify potential hazards and levels of work risk. Data were obtained through questionnaires and project documents related to the implementation of OHS procedures and project costs. The results show that the three highest identified risks are the risk of falling from height with a risk value of 12 (high category), the risk of being struck by materials with a risk value of 10 (high category), and the risk of electric shock with a risk value of 9 (medium category). After the implementation of risk control measures such as the use of personal protective equipment, installation of safety devices, and increased supervision, the risk level decreased by 33% from the initial condition. This indicates that the implementation of OHS is not only effective in improving work safety, but also contributes positively to risk control in construction projects.
Analysis of Performance and Level of Service of the Yos Sudarso Road Section in Baubau City Based on the Pedoman Kapasitas Jalan Indonesia (PKJI) 2023 Nasir, Jamiludin; Witjaksana, Budi; Purnama, Jaka
Jurnal Teknik Indonesia Vol. 5 No. 2 (2026): Jurnal Teknik Indonesia
Publisher : Publica Scientific Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58860/jti.v5i2.816

Abstract

The Yos Sudarso Road section in Wolio District, Baubau City, is a major road with a strategic function, serving as the main connector between important centers such as the commercial area, Kamali Beach, and Murhum Port. The diverse land-use functions along this road generate high daily activity variations, which directly impact its traffic performance. Currently, Jalan Yos Sudarso is experiencing a decline in performance due to increased traffic volume and significant side friction from commercial activities. This research aims to analyze the traffic flow conditions and the Level of Service (LOS) of the road. The analysis method utilizes the Pedoman Kapasitas Jalan Indonesia (PKJI) 2023, based on primary data from surveys on road geometry, traffic volume, and side friction during peak hours. The traffic flow conditions reveal a very high level of side friction caused by on-street parking and vehicle maneuvers into/out of commercial establishments. This activity effectively reduces the road's effective width, consequently degrading its performance. During the peak hour (09:00–10:00), the number of side friction incidents reached 327 incidents per hour, with a concurrent traffic volume of 918.5 pcu/hour (passenger car units per hour). The analysis results show that the road section's actual capacity is 1,116.9 pcu/hour with a Degree of Saturation (DS) value of 0.82. This indicates congested flow conditions and a Level of Service (LOS) category D. This condition suggests that the road can still function, but it no longer provides an optimal level of service.
Co-Authors A. Asrijal Abdul Q, Muhammad Ali Hasymi Adam, Ijaz Adiputra, Reza Aditya, febri Agustian Setyagraha, Javan Akhmad Dahlan Alan Muin, Oskar Ezra Alfianti, Diah Mega Ali Imron, Mohammad Alifia Amalia, Mekar Meilisa Ardhiansyah, Widha Ardianto, Lukman Ari Purwanti Arifin, Syaadiah Ariyanto, Subkhan Asmoro, Mochamad Ranoe Balido, Pandji Thoha S. Candra M, Alang Darmawan, Rifky Dewi, Dita Dismalasari Eko Pramono Ernitasari, Windya Yunesti Esti Wulandari Eva Desembrianita Farchan, Muchamad Firdaus, Muhammad Bayu Gede Sarya, Gede Hamzah, Aulia Hanie Teki Tjendani, Hanie Teki Hardi, Edelbertus Lusius Hartawan, Ade Sholeh Hepiyanto, Rasio Hepiyanto, Rasio Herkunadi, Dimas Fitra Herry Widhiarto, Herry Imron, Achmad Imron, Achmad Irfan, Bachtiar Muhammad Irma Martaningtyas, Irma Jaka Purnama K., Moh Ali Lutfi M. Khakimin, Achmad Lukmanul Lendra Lendra Lesmana, Denny Indra Lutfi, Moh Ali Meganda, Danniar Firdaus Meilasari, Shavica Kurnia Mochamad Nurcholis Mughni, Amalia Fathimah Azh Zhahra Muhammad Muhammad Muqaddas, Zaiful Nailufar, Linda Nasir, Jamiludin Nofirman, Nofirman Novianto, Muhammad Taufik Nugraha, Budidarma Ardi Nurkaruniati, Titik Oetomo, Wateno Patriadi, Andi Permana, Midi Agus Pramadha, Ichsan Yanuansyah Pratondo W, Wahyu Proboretno, Wuri Purba, Ulfani Ikhwana Putri, Dwi Cahyani Rafi, Yudha Fatkur Rahmatullah, Yan Raimundo, João Rakasyiwi, Gilang Ramadhan Reresi, Samuel Petrik Reresi, Samuel Petrik Ridha Annisa Imaniar Riduwan, Sanda Praja Ridwan, Ridwan Rohim, Abd. RR. Ella Evrita Hestiandari Rustam Rustam Sajiyo Sajiyo, Sajiyo Septa Intiar SETIAWAN, ENDIK Setyagraha, Javan Agustian Sugeng Hariyadi, Sugeng Sulistianto, Leo Agus Tamrin Fathoni Teguh Prasetijo, Christiawan Teki Tjendani, Hanie Tjendani , Hanie Teki Tjendani, Hani Teki Veithzal Rivai Zainal Venusia A, M. Fajar Wahananto, Anang Widyarso, Riza Wulandari , Esti Zuhri, Syaefuddin