RIYADI, NOVAN (2025) ANALISIS TAKE-OFF REINFORCEMENT BAR MENGGUNAKAN METODE KONVENSIONAL DAN BUILDING INFORMATION MODELLING (BIM) PADA PEKERJAAN STRUKTUR BANGUNAN DATA CENTER UNTUK MENINGKATKAN KINERJA BIAYA DAN WAKTU. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The increase in construction projects in Indonesia is certainly followed by an increase in the tender process as well; however, this tender process has a limited duration. Some contractors are still constrained by the limited tender submission time, one of the challenges being the varied rebar models. An accurate calculation method in the tender process enables contractors to achieve quick and precise results in quantity take-off calculations. Generally, there are 2 methods for tender calculations the Conventional method and the Building Information Modeling (BIM) method. In the quantity take-off calculation for the case study of the Yellow Stone data center, the structural work uses both methods. The conventional calculation method is done by calculating the rebar per cut and then recapping it into Microsoft Excel. The Building Information Modelling (BIM) method involves creating a 3D model first and then summarizing the volume quantities. The results of the calculations obtained from the conventional method and BIM for concrete work show a deviation of 1.05%, where the conventional method yields a larger result, while for iron work, a deviation of 1.2% is obtained, with the BIM method showing a larger calculation. In terms of manpower costs, a deviation of 52.11% is observed, and the time calculation deviation is 53.85%, indicating that the BIM method is faster in calculations. In terms of investment costs, advice and software show a deviation of 13.61%, with the conventional method having a lower price. From these calculations and deviations, both methods have their advantages and disadvantages, thus becoming a consideration for contractors in performing quantity take-off calculations. Keywords: Building Information Modeling (BIM), Quantity Take-Off . Peningkatan proyek konstruksi di indonesia tentunya diikuti oleh proses tender meningkat juga, akan tetapi proses tender tersebut mempunyai durasi waktu yang terbatas. Pada beberapa kontraktor masih terkendala dengan waktu submit tender yang terbatas tersebut, salah satunya kendalanya yaitu model pembesian yang bervasiasi. Metode perhitungan yang tepat dalam proses tender memungkinkan pelaku kontraktor mendapatkan hasil yang cepat dan akurat dalam perhitungan quantity take - off. Secara umum perhitungan tender terdapat 2 metode yaitu metode Konvensional dan metode Building Information Modelling (BIM). Dalam perhitungan quantity take - off pada studi kasus proyek Yellow Stone data center pekerjaan struktur atas menggunakan kedua metode tersebut. Metode perhitungan konvesional dilakukan dengan menghitung rebar per potongan kemudian di rekap kedalam microsoft excel, sedangkan metode Building Information Modelling (BIM) yaitu dengan membuat modelling 3D terlebih dahulu kemudian rekap quantity volume. Hasil perhitungan didapatkan dari metode konvensional dan BIM untuk pekerjaan beton didapatkan deviasi sebesar 1,05% dimana perhitungan metode konvensional lebih besar, sedangkan untuk pekerjaan besi didapatkan deviasi 1,2 % dimana perhitungan metode BIM lebih besar. Sedangkan dalam biaya man power mendapatkan deviasi 52.11%, deviasi dalam waktu perhitungan 53.85% metode BIM lebih cepat dalam perhitungan, dalam biaya investasi dvice dan software mempunyai deviasi 13,61% metode konvensional memiliki harga yang lebih rendah. Dari hasil perhitungan serta deviasi tersebut kedua metode mempunyai kelebihan dan kekurangan kedua metode sehingga menjadi pertimbangan kontraktor dalam melakukan perhitungan quantity take - off. Kata Kunci: Building Information Modeling (BIM), Quantity Take-Off
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