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All Journal Jurnal Teknologi Jurnal Penelitian Rumpun Ilmu Teknik
Nixon Servius Mantiri
Politeknik Negeri Manado
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering

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Evaluasi Kinerja Waktu dan Biaya Pada Proyek Penanganan Longsoran Ruas Jalan Kema-Rumbia Dengan Menggunakan Metode Earned Value Alfian Mokodenseho; Geertje Efraty Kandiyoh; Nixon Servius Mantiri
Jurnal Teknologi Vol 26, No 2 (2026): Agustus 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i2.9856

Abstract

Road infrastructure projects require effective control of cost and schedule performance to ensure completion according to the established plan. This study aims to evaluate the cost and schedule performance of the Kema–Rumbia Road Landslide Mitigation Project using the Earned Value Management (EVM) method and to estimate the cost and completion time of the project. Project data from Week 1 to Week 37 were analyzed, with detailed evaluation conducted at Week 18 and Week 35. The parameters analyzed include Planned Value (PV), Earned Value (EV), Actual Cost (AC), Cost Variance (CV), Schedule Variance (SV), Cost Performance Index (CPI), Schedule Performance Index (SPI), Estimate to Complete (ETC), Estimate at Completion (EAC), and Schedule Estimate at Completion (S-EAC). The results show that at Week 18, the project experienced cost inefficiency and schedule delay, indicated by a CPI of 0.79 and SPI of 0.92. At Week 35, cost performance improved, with a positive CV of Rp328,398,417.87 and CPI of 1.07, while schedule performance remained behind plan with an SPI of 0.93. At Week 18, the estimated completion time was 250 days compared with the planned 240 days, while actual project completion reached approximately 254 days. The EAC decreased from Rp6,728,615,463.56 at Week 18 to Rp4,961,419,150.13 at Week 35. These findings indicate that improved cost efficiency did not eliminate schedule delays.
Percepatan Durasi Proyek Pembangunan Laboratorium Kesehatan Masyarakat Kota Manado dengan Metode Time Cost Trade Off Viegel Wahongan; Mercy Freki Hosang; Nixon Servius Mantiri
Jurnal Penelitian Rumpun Ilmu Teknik Vol. 5 No. 3 (2026): Jurnal Penelitian Rumpun Ilmu Teknik
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/juprit.v5i3.6872

Abstract

Government building projects work under tight schedules because they must finish within one fiscal year, while late handover triggers a daily contractual penalty. This study establishes the critical path of the Manado Public Health Laboratory project worth IDR 16,385,611,007.54, calculates project duration and cost after acceleration, and assesses whether the acceleration is financially defensible. Secondary data from the contract bill of quantity and the planned S curve were analysed with the Critical Path Method, then accelerated through the Time Cost Trade Off method by adding three overtime hours a day. The network of twenty two work packages produced a duration of 546 days, seventeen of which lay on the critical path. Crashing the ten critical packages lasting at least 28 days shortened the project to 459 days, a saving of 87 days or 15.93 percent. Direct cost rose by IDR 932,985,520.50 while indirect cost fell by IDR 130,544,703.21, so total cost increased by IDR 802,440,817.29 or 4.90 percent. The exchange rate stayed at IDR 9,223,457.67 per day, below the late delivery penalty of IDR 16,385,611.01 per day. Acceleration is worth running as a schedule recovery measure, yet brings no gain when the project runs on plan.
Co-Authors Alfian Mokodenseho Geertje Efraty Kandiyoh Mercy Freki Hosang Viegel Wahongan