ASBILA, DILA NUR (2025) ANALISIS PENERAPAN BUILDING INFORMATION MODELING (BIM 5D) UNTUK MENGURANGI RISIKO KELEBIHAN MATERIAL PADA STRUKTUR BAWAH PROYEK PEMBANGUNAN KANTOR PT POWER UTAMA PROPERTINDO. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The construction project of PT Power Utama Propertindo Office encountered problems due to the use of conventional methods in the Quantity Take Off (QTO) process. This resulted in inaccurate material estimation, leading to an excess of 33.5 foundation piles with an estimated material waste cost of IDR 175,000,000, thereby increasing the risk of budget overruns and waste generation on site. This study applies Building Information Modeling (BIM) 5D using Autodesk Revit (Student Version) to model the substructure, generate an automatic QTO, and compare it with the conventional calculation method. The analysis focuses on three main items: concrete, reinforcement, and formwork. The results show that BIM 5D produces more accurate and precise volume calculations compared to conventional methods. Efficiency achieved is 37.1% for concrete with the largest difference in tie beams, 17.6% for reinforcement with the largest difference in pile caps, and 20.7% for formwork with relatively even differences across all elements. The volume discrepancies are mainly caused by misinterpretation of 2D drawings, exclusion of pile cut-offs, simplification of manual calculations, and the use of standard reinforcement tables without considering splice details or cutting waste. These findings demonstrate that the application of BIM 5D can improve the accuracy of material volume estimation and potentially reduce the risk of material surplus and cost overruns in substructure construction work. Keywords: Building Information Modeling (BIM) 5D, Quantity Take Off, material efficiency, substructure, Autodesk Revit Proyek pembangunan Kantor PT Power Utama Propertindo menghadapi permasalahan akibat penggunaan metode konvensional dalam Quantity Take Off (QTO). Hal ini menimbulkan ketidaktepatan estimasi kebutuhan material yang berujung pada kelebihan pondasi tiang pancang sebanyak 33,5 batang dengan estimasi pemborosan biaya Rp175.000.000, sehingga meningkatkan risiko pembengkakan anggaran dan waste material. Penelitian ini menerapkan Building Information Modeling (BIM) 5D menggunakan Autodesk Revit (Student Version) untuk memodelkan struktur bawah bangunan, menghasilkan QTO otomatis, serta membandingkannya dengan perhitungan konvensional. Analisis difokuskan pada volume pekerjaan beton, pembesian, dan bekisting. Hasil penelitian menunjukkan bahwa metode BIM 5D memberikan volume yang lebih presisi dibandingkan metode konvensional. Efisiensi yang dicapai adalah 37,1% pada beton dengan selisih terbesar pada tie beam, 17,6% pada pembesian dengan selisih terbesar pada pile cap, dan 20,7% pada bekisting dengan selisih merata pada seluruh elemen. Selisih volume ini terutama disebabkan oleh kesalahan interpretasi gambar 2D, tidak diperhitungkannya potongan (cut-off) tiang pancang, penyederhanaan perhitungan manual, serta penggunaan tabel standar pembesian tanpa mempertimbangkan detail sambungan. Temuan ini membuktikan bahwa penerapan BIM 5D mampu meningkatkan akurasi estimasi volume material dan berpotensi mengurangi risiko kelebihan material maupun pembengkakan biaya pada pekerjaan struktur bawah konstruksi. Kata kunci: Building Information Modeling (BIM) 5D, Quantity Take Off, Efisiensi Material, Struktur Bawah, Autodesk Revit
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