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All Journal Journal of Social Science Journal of Social Research COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat International Journal of Hydrological and Environmental for Sustainability TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES (TIRES) Acitya Wisesa: Journal of Multidisciplinary Research INJURITY: Journal of Interdisciplinary Studies Jurnal Teknik Indonesia Journal of Social Science Enrichment: Journal of Multidisciplinary Research and Development International Journal of Social Science and Community Service
Esti Wulandari
Universitas 17 Agustus 1945 Surabaya
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Transportation Other

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Cost Efficiency Analysis of Riverbank Protection Work Acceleration Using the Critical Path Method at the Masangan River, Pasuruan Regency Ahzam Zarkasy Septian Danu; Andi Patriadi; Esti Wulandari
Jurnal Teknik Indonesia Vol. 5 No. 3 (2026): Jurnal Teknik Indonesia
Publisher : Publica Scientific Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58860/jti.v5i3.941

Abstract

Riverbank protection projects are susceptible to delays caused by fluctuating river discharge, tidal conditions, adverse weather, and restricted working hours. Such delays can increase project costs and reduce the effectiveness of disaster mitigation measures. This study evaluated the cost efficiency of accelerating the Masangan Riverbank Protection Project in Pasuruan Regency using the Critical Path Method (CPM). A quantitative approach was applied using secondary data, including the work breakdown structure, baseline schedule, activity durations, work volumes, progress reports, S-curve, and project cost documents. CPM calculations were used to identify critical activities based on earliest start and finish times, latest start and finish times, and zero float values. Acceleration was implemented by adding workers to critical activities while maintaining eight working hours per day and six working days per week. Workforce additions reduced the durations of K-175 concrete work, rubble masonry, and weep-hole installation from 42 to 30 days, although direct labor costs increased. The respective cost slopes were IDR 668,824, IDR 1,637,280, and IDR 818,640 per day. K-175 concrete work was identified as the most economical acceleration alternative, whereas rubble masonry represented the highest additional cost. The integration of CPM and cost-slope analysis supported selective schedule acceleration by prioritizing critical activities that achieved the greatest time reduction with the lowest additional cost.
Co-Authors Ade Sholeh Hartawan Ahmad Rois Ahzam Zarkasy Septian Danu Aki’ Suprapto Alang Candra M Andi Patriadi Andi Patriadi Andiyan Andiyan Arik Nur Cahyo Atma Djendra Purbo Bakti Yudi Firmanto Bela Prayogo Budi Witjaksana Budi Witjaksana Budi Witjaksana Christio Aji Sasongko David Himawan Susetya domingos godinho Dwi Atwin Suyitno Dwi Erry Nopriyanto Ean Fadhillah Nurrahmat Fadzil Abdillah Ghufran Helmi Aziz Hanggana Prayuda Bakti Hanie Teki Tjendani Hanie Teki Tjendani Hanie Teki Tjendani Hanie Teki Tjendani Hasan Alif Fathurokman Jaka Purnama Jamiludin Jamiludin Jarwoto Jarwoto Jenodius Aldino John Jiden Desta Mahendro Kris Minaryo Laksono Djoko Nugroho Leo Agus Sulistianto Linda Nailufar Lukman Ardianto M. Fajar Venusia A Maya Yusnita Muchamad Lutfi Muh. Tafsir Muhammad Efendi Muhammad Zainal Muttaqin Muhammad Zainal Muttaqin Ony Frengky Rumihin Orlando Gomes Rahmad Junaidi, Rahmad Rahmat Rahmat Rony Zakariya Rony Zakariya Shreeniwas Omanwar Slamet Riyadi Surya Adi Rinekso Thomas Aquino Seki Tisno Subroto Ummatus Sholikhah Wahyu Kusuma Wardhana Yunaidi Supriyanto