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All Journal Jurnal Teknika Jurnal Kacapuri : Jurnal Keilmuan Teknik Sipil Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Infomanpro Journal of Social Research INJURITY: Journal of Interdisciplinary Studies Journal Research of Social Science, Economics, and Management Jurnal Teknik Indonesia Jurnal Taguchi : Jurnal Ilmiah Teknik dan Manajemen Industri Enrichment: Journal of Multidisciplinary Research and Development Asian Journal of Social and Humanities
Budi Witjaksana
Universitas 17 Agustus 1945 Surabaya
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Social Sciences Transportation

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Evaluation of Cost and Time Estimates Using The Earned Value Method: A Case Study of The Construction of RU Guest House and Main House Komang Gede Triska Bayu Wedananta; Hanie Teki Tjendani; Budi Witjaksana
Journal of Social Research Vol. 4 No. 4 (2025): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v4i4.2488

Abstract

This study evaluates the performance of the RU Guest House and Main House construction project in Bali, focusing on time and cost estimates using the Earned Value Method (EVM). By analyzing the Actual Cost of Work Performed (ACWP), Budgeted Cost of Work Performed (BCWP), and Budgeted Cost of Work Scheduled (BCWS), the study identifies significant delays and cost overruns. The project, initially scheduled for 34 weeks, experienced a 27.99% delay by week 21, with an estimated cost increase of IDR 1,079,046,375. The findings reveal that poor initial planning and logistical constraints, such as narrow access roads for material delivery, contributed to the delays. The study also forecasts an extended completion time of 42 weeks and provides estimates for the total project cost at IDR 13,736,136,610. The results highlight the importance of thorough planning and logistics management to minimize risks. EVM proved to be an effective tool in monitoring and controlling project performance, providing essential insights for improving future project management practices. The study concludes that better planning, logistics, and real-time project performance monitoring are crucial to ensuring project success in both time and budget management.
Analysis of Occupational Safety and Health (OSH) Management using The HIRARC Method in The Construction of Rubaru 1 Elementary School Midi Agus Permana; Budi Witjaksana; Jaka Purnama
Journal of Social Research Vol. 4 No. 5 (2025): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v4i5.2527

Abstract

Construction projects in Indonesia continue to face high rates of workplace accidents due to inadequate implementation of Occupational Safety and Health (OSH) systems. This study aims to analyze how the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method can be effectively applied in the Rubaru 1 Elementary School construction project to minimize risks and improve workplace safety. Using a qualitative descriptive approach, data were collected through field observations, interviews, and documentation studies over six months. The research identified multiple hazards categorized by severity: six major risks, three high risks, and six medium risks. These included hazards from working at heights, exposure to chemicals, and improper use of personal protective equipment (PPE). Risk controls were implemented through administrative strategies (training, supervision), engineering controls (equipment modifications, warning signs), and mandatory PPE usage. The results showed that the HIRARC method is effective in systematically identifying and mitigating construction-related hazards. However, its success is influenced by the discipline of workers and management’s commitment to supervision. The findings emphasize the need for continuous evaluation and structured training programs to enhance OSH compliance and cultivate a safety-oriented culture in construction environments.
PELATIHAN PEMBUATAN MATERI AJAR DIGITAL MENGGUNAKAN APLIKASI CANVA BAGI DOSEN DALAM PEMBELAJARAN DARING Prastyadi Wibawa Rahayu; Ibnu Andli Marta; Didi Sudrajat; Suroso Suroso; Liza Husnita; Jeffrey Payung Langi; Budi Witjaksana
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2025): Volume 6 No. 1 Tahun 2025
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v6i1.41455

Abstract

Pelatihan pembuatan materi ajar digital menggunakan Canva merupakan solusi untuk meningkatkan kualitas pembelajaran daring di kalangan dosen. Permasalahan umum yang dihadapi adalah keterbatasan kemampuan teknis dosen dalam mendesain materi yang menarik dan interaktif, yang berpengaruh pada keterlibatan mahasiswa. Kegiatan ini melibatkan 22 peserta dari berbagai institusi dan dilaksanakan secara daring melalui Zoom. Metode pelatihan mencakup demonstrasi, latihan mandiri, dan diskusi interaktif. Hasil menunjukkan peningkatan signifikan dalam keterampilan peserta, di mana mayoritas peserta berhasil membuat materi ajar digital yang relevan. Pelatihan ini juga meningkatkan kepercayaan diri peserta dalam memanfaatkan Canva untuk pembelajaran. Dengan hasil yang positif, kegiatan ini diharapkan dapat diadaptasi secara lebih luas untuk mendukung transformasi digital dalam pendidikan.
Analysis of the Construction Tender Process at the Bina Marga Public Works Office and the Goods/Services Procurement Unit of Sidoarjo District Using the Electronic Procurement Platform and the SWOT Method Denny Indra Lesmana; Budi Witjaksana; Jaka Purnama
Interdiciplinary Journal and Hummanity (INJURITY) Vol. 4 No. 3 (2025): INJURITY: Journal of Interdisciplinary Studies.
Publisher : Pusat Publikasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58631/injurity.v4i3.1397

Abstract

The procurement of goods and services by the Government is essential for enhancing development, optimizing public services, and boosting economic growth in Indonesia, with significant expenditures reflected in the General Procurement Plan (RUP) amounting to Rp1,226.7 trillion nationally and Rp2,205 trillion in 2023. In this context, construction service providers are vital for implementing construction projects, which encompass planning, execution, and supervision across various disciplines. The electronic procurement service (LPSE) platform is one of the key platforms in the procurement process, ensuring transparency, accountability, and competition, while also identifying barriers faced by new suppliers, thereby suggesting areas for improvement in usability and accessibility. This study focuses on the implementation of road work package construction tenders in the Sidoarjo Regency area using the LPSE platform, covering the selection preparation, bid evaluation, winner determination, and work implementation processes, along with any problems encountered at each stage. The study also underscores the platform's suitability for large-scale construction project packages, reinforcing its strategic application in high-stakes environments, and utilizes up-to-date data from the 2023 and 2024 budget years.
Cost Analysis of Road Performance Improvement on Yos Sudarso Road, Baubau City Jamiludin Nasir; Budi Witjaksana; Jaka Purnama
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; Budi Witjaksana; Jaka Purnama
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.
Analysis of Acceleration Construction Project the Lecture Building at Politeknik Negeri Madura Using the Time Cost Trade off Method Dimas Fitra Herkunadi; Budi Witjaksana
Journal Research of Social Science, Economics, and Management Vol. 4 No. 11 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i11.909

Abstract

This study investigates the effectiveness of Social Media Marketing Activities (SMMA) on purchase intention, using Fitfuel as a case study. The research examines the impact of SMMA on brand awareness and customer trust, and how these two variables influence purchase intention. A quantitative approach was employed, using online questionnaires distributed to 200 respondents, supported by interviews with Fitfuel's management. The external and internal environment were analyzed through PESTEL, Porter’s Five Forces, competitor analysis, STP, Marketing Mix, VRIO, and SWOT. Results show that SMMA has a significant positive effect on both brand awareness and customer trust. In turn, both brand awareness and customer trust positively influence purchase intention. However, communication between consumers and the brand (as part of SMMA) was found to have a less significant effect compared to other indicators. The study presents a TOWS matrix and implementation plan to offer strategic actions for Fitfuel to optimize its digital marketing, strengthen brand perception, and increase conversion. This research contributes to understanding how digital marketing components affect customer behavior in the health food sector.
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 Jamiludin Nasir; Budi Witjaksana; Jaka Purnama
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.
Cost Control Analysis Using the Earned Value Method on the Warehouse Construction Package and its Supporting Facilities at Juwata Airport Ridha Annisa Imaniar; Budi Witjaksana; Jaka Purnama
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 12 (2025): 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.v2i12.316

Abstract

The construction of warehousing and supporting facilities at Juwata Airport has several obstacles that cause delays in the implementation of the work, so a work control method is needed, namely the earned value method by assessing the cost and time performance of project implementation such as Cost Variance (CV), Schedule Variance (SV), Schedule Performance Index (SPI), and Cost Performance Index (CPI) as well as the estimated cost and time of project completion. The purpose of this research is to calculate the amount of cost needed to complete the project of Warehousing Development Package and Supporting Facilities of Juwata Airport on time according to the plan schedule. The method used is the Earned Value Method in evaluating cost performance and time performance. The analysis carried out uses 3 (three) indicators, namely ACWP (Actual Cost of Work Performance), BCWP (Budgeted Cost of Work Performance) and BCWS (Budgeted Cost of Work Scheduled). By using the earned value method, the final project cost estimate obtained from the EAC is Rp. 15,019,062,678.43 and the estimated time / Time Estimate (TE) at week 26 shows 239 calendar days so that the completion time is 28 days late from the contract schedule. And the solution to the delay is to accelerate the work with an additional cost of Rp. 68,970,000. Future research should explore optimization strategies to enhance efficiency in cost estimation and project scheduling.
Co-Authors Adi Purwanto Ahmad Fawzi Pratama Anang Wahananto Andi Patriadi Aulia Hamzah Damarhuda Afdholi Martin Denny Indra Lesmana Didi Sudrajat Dimas Fitra Herkunadi Febri Cahyono Hanie Teki Tjendani Ibnu Andli Marta Jaka Purnama Jamiludin Nasir Javan Agustian Setyagraha Jeffrey Payung Langi João Raimundo Komang Gede Triska Bayu Wedananta Liza Husnita M. Zakaria Meike Wattimena Midi Agus Permana Muhammad Naufal Riza Prastyadi Wibawa Rahayu Rendy Zesario Akbar Ridha Annisa Imaniar Rino Wahyu Pamungkas Rustam Rustam Sugeng Hariyadi Suroso Suroso Titik Nurkaruniati Utuh Dwi Candra Kelana Putra