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All Journal Community Empowerment Eduvest - Journal of Universal Studies
Wibawa, Ilham Akbar Mulya
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Aerospace Engineering Arts Humanities Computer Science & IT Education Health Professions Neuroscience Public Health Social Sciences

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The Effect of Soil Survey Adequacy on Engineering Design Details (DED) on Potential Cost and Construction Time Savings Wibawa, Ilham Akbar Mulya; Yuwono, Bambang Endro; Pontan, Darmawan; Widiarso, Tulus
Eduvest - Journal of Universal Studies Vol. 5 No. 7 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i7.50870

Abstract

The construction of the Kadusirung Dua Underpass Project in Banten aimed to improve access routes but encountered landslides during execution, necessitating design changes and additional soil investigations. This study examined the impact of inadequate soil surveys on engineering design, focusing on cost and time efficiency. The research objectives were to analyze the effects of design changes during construction, compare initial and revised designs, and evaluate savings potential if proper soil investigations were conducted initially. Using secondary data from the project, the study employed Microsoft Project for time-cost analysis and applied the Cost of Change vs. Opportunity to Influence theory. Findings revealed that design changes during construction increased costs by Rp 43.6 billion and extended the timeline by 566 days. Conversely, comprehensive soil surveys at the planning stage could have saved 25% of the time (237 days) and 18% of costs (Rp 38.9 billion). The implications highlight the critical need for thorough geotechnical investigations early in projects to mitigate delays and cost overruns. The study underscores the importance of adhering to soil testing standards (SNI 8460:2017) and optimizing design decisions during planning to enhance project efficiency.
Bridging the gap: Fostering high school students’ interest in civil engineering through an innovative introduction program Yuwono, Bambang Endro; Misshuari, Imas Wihdah; Zayadi, Ruwaida; Inavonna, Inavonna; Adiyanto, Moch Rifky; Wibawa, Ilham Akbar Mulya
Community Empowerment Vol 10 No 6 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.13141

Abstract

The low interest of high school students in civil engineering is a concern, as this field is crucial for infrastructure development. This community engagement program aimed to enhance the interest and understanding of civil engineering among students at SMAN 78 Jakarta through an innovative introductory program. The methods employed included interactive presentations on civil engineering, discussions, Q&A sessions, and evaluations. The results showed that 100% of students expressed a desire to learn more about civil engineering through follow-up activities, and 76.9% of students reported a better understanding of the field compared to before. Furthermore, 65.4% of students demonstrated increased interest in civil engineering, although the majority still placed it as a second or lower-choice major. The implications of this community service activity are increased awareness and interest among students in the field of civil engineering. However, to achieve a more significant shift in major selection, a more comprehensive approach is needed, such as more intensive career guidance, direct involvement with professionals, and more realistic work simulations.
Co-Authors Adiyanto, Moch Rifky Bambang Endro Yuwono Imas Wihdah Misshuari Inavonna, Inavonna Pontan, Darmawan Tulus Widiarso Zayadi, Ruwaida