Analisis Implemetasi Last Planner System Terhadap Percent Plan Complete Pada Proyek Konstruksi dengan Menggunakan Aplikasi Primavera P6 Pada Tahap Pelaksanaan
DOI:
https://doi.org/10.29103/tj.v16i2.1376Keywords:
Last Planner System, Primavera P6, project scheduling, Percent Plan CompleteAbstract
Abstrak
Keterlambatan pelaksanaan proyek konstruksi menjadi permasalahan utama yang berdampak pada penurunan produktivitas, dan ketidaktercapaian target waktu. Salah satu penyebab utama keterlambatan adalah lemahnya koordinasi, dan rendahnya keandalan perencanaan kerja mingguan. Penelitian ini bertujuan menganalisis implementasi Last Planner System dengan Primavera P6 dan membandingkan kinerjanya dengan metode penjadwalan konvensional pada tahap pelaksanaan proyek. Studi kasus dilakukan pada Proyek Gedung Mal yang berlokasi di Kota Semarang, dengan fokus pada pekerjaan struktur atas lantai 3 dan lantai 4. Metode penelitian yang digunakan adalah pendekatan kuantitatif dengan analisis deskriptif. Data penelitian berupa Kurva S, BoQ, laporan mingguan, dan data tenaga kerja yang diperoleh dari manajemen konstruksi proyek. Data tersebut diolah menggunakan aplikasi Primavera P6 untuk menyusun master schedule, phase schedule, look ahead plan, dan weekly work plan. Evaluasi kinerja penerapan Last Planner System dilakukan melalui analisis Percent Plan Complete, deviasi terhadap baseline, dan efisiensi waktu pelaksanaan, kemudian dibandingkan dengan metode konvensional. Hasil penelitian menunjukkan bahwa penerapan Last Planner System dengan Primavera P6 mampu meningkatkan keandalan perencanaan dan efektivitas pengendalian proyek. Nilai Percent Plan Complete rata-rata yang diperoleh sebesar 86,4%, menunjukkan tingkat ketercapaian rencana kerja mingguan berada pada kategori baik, sesuai dengan standar Last Planner System yang menyatakan Percent Plan Complete di atas 70% sebagai indikator perencanaan yang andal. Selain itu, terjadi efisiensi waktu pelaksanaan sebesar 2 minggu pada lantai 3 dan 1 minggu pada lantai 4 dibandingkan dengan baseline jadwal konvensional. Berdasarkan hasil, disimpulkan bahwa kolaborasi antara Last Planner System dan Primavera P6 berkontribusi mengurangi pemborosan waktu pelaksanaan, dan memperbaiki kinerja perencanaan proyek konstruksi.
Kata kunci: Last Planner System, Primavera P6, penjadwalan proyek, Percent Plan Complete
Abstract
Delays in the implementation of construction projects remain the main problems affecting declining productivity and the failure to meet time targets. One of the main causes of these delays is poor coordination and low reliability of weekly work planning. This study aims to analyze the implementation of Last Planner System in Primavera P6 and compare its performance with conventional scheduling methods during project implementation. The case study was conducted on the Mall Building Construction Project in Semarang City, focusing on the upper structure of the 3rd and 4th floors. The research method used is a quantitative approach with descriptive analysis. The research data are in the form of S-curves, BoQs, weekly reports, and labor data obtained from project construction management. The data was processed using the Primavera P6 application to compile a master schedule, a phase schedule, a look-ahead plan, and a weekly work plan. The performance of Last Planner System implementation was evaluated through Percent Plan Complete analysis, deviation from baseline, and implementation time efficiency, and then compared with conventional methods. The results of the study show that implementing Last Planner System with support from Primavera P6 can increase the reliability of planning and the effectiveness of project control. The average Percent Plan Complete value was 86.4%, indicating that the weekly work plan achievement is in the good category, in accordance with the Last Planner System standard, which states that a Percent Plan Complete above 70% is a reliable planning indicator. In addition, the efficiency was 2 weeks on the 3rd floor and 1 week on the 4th floor compared to the conventional-schedule baseline. Based on these results, it can be concluded that the collaboration between Last Planner System and Primavera P6 contributes to reducing waste of implementation time and improving the performance of construction project planning.
Keywords: Last Planner System, Primavera P6, project scheduling, Percent Plan Complete
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