Perkembangan teknologi konstruksi mendorong inovasi dalam metode kerja, material, dan peralatan, termasuk pada sistem bekisting beton bertulang. Bekisting konvensional berbahan kayu dan multipleks masih banyak digunakan karena biaya awal rendah dan mudah dikerjakan, namun memiliki keterbatasan pada efisiensi waktu, ketelitian, serta rendahnya tingkat penggunaan ulang. Sebagai alternatif, aluminium formwork mulai diterapkan pada proyek skala besar dengan keunggulan kemudahan pemasangan, kualitas pengecoran lebih baik, tingkat penggunaan ulang tinggi, serta ramah lingkungan, meskipun membutuhkan investasi awal lebih besar. Penelitian ini bertujuan membandingkan sistem konvensional dan aluminium formwork pada pekerjaan balok dan pelat, dengan analisis durasi waktu serta total biaya pelaksanaan. Studi dilakukan pada proyek gedung bertingkat dengan acuan AHSP Permen PUPR RI 2024 dan Standar Harga Satuan Kabupaten Tangerang 2024. Hasil penelitian menunjukkan bahwa pada volume pekerjaan ±952 m² dengan aluminium formwork, biaya yang dibutuhkan sebesar Rp591,6 juta, sedangkan pada volume ±978 m² dengan sistem konvensional sebesar Rp372,1 juta. Selisih biaya mencapai Rp219,5 juta atau 59% lebih tinggi pada sistem aluminium. Dari sisi pelaksanaan, aluminium membutuhkan 68 orang/hari dengan durasi 7 hari, sedangkan konvensional 71 orang/hari dengan durasi 6 hari 6 jam. Dengan demikian, aluminium formwork meskipun lebih mahal, mampu memberikan keunggulan pada efisiensi tenaga kerja dan kualitas hasil pengecoran, sehingga berpotensi lebih ekonomis pada penggunaan jangka panjang.

The development of construction technology has encouraged innovations in work methods, materials, and supporting equipment, including formwork systems for reinforced concrete. Conventional formwork made of wood and plywood is still widely used due to its relatively low initial cost and ease of installation. However, it has limitations in terms of time efficiency, accuracy, and low reusability. As an alternative, aluminium formwork has been increasingly applied in large-scale projects due to its advantages, such as faster installation, better casting quality, high reusability, and environmental friendliness, although it requires higher initial investment. This study aims to compare conventional and aluminium formwork systems in beam and slab works, focusing on execution duration and total construction costs. The analysis was carried out on a multi-storey building project, referring to the Unit Price Analysis (AHSP) of the Ministry of Public Works and Housing, 2024 and the 2024 Standard Unit Prices of Tangerang Regency. The results show that for a work volume of approximately 952 m² using aluminium formwork, the total cost reached IDR 591.6 million, while for a volume of approximately 978 m² using conventional formwork, the cost was IDR 372.1 million. The cost difference amounts to IDR 219.5 million, or 59% higher with the aluminium system. In terms of manpower and time, aluminium formwork required 68 workers/day with a duration of 7 days, while the conventional system required 71 workers/day with a duration of 6 days 6 hours. In conclusion, although aluminium formwork entails higher costs, it provides advantages in workforce efficiency and casting quality, making it potentially more economical in long-term applications.