ABSTRACT

Material waste can have a negative impact on building construction projects, especially in the budgeted cost sector. The use of BIM software can help in calculating and optimizing reinforcement work so that excessive material waste does not occur. In this research, building modeling was carried out using Revit software. The output achieved in processing this data is quantity take-off. The calculation of remaining rebar material in this research uses the Microsoft Excel software program with the aim of finding out the number of rebar mills needed and the combination of cuts in one rebar mill. Structural modeling using BIM Revit aims to determine the shape of the structure in 3D visualization. This visualization makes it easier to model reinforcement, bends, and iron connections. From the modeling results, the take-off amount is obtained. From the results of the Revit take-off quantity, the length of the rod used as a pattern for cutting steel rods 12 meters long is obtained. Next, an analysis of the level of waste and waste costs is carried out. In the construction of the ICU building at Ngudi Waluyo Blitar Regional Hospital, the volume of material for strengthening work was 3,058.57 meters with a total weight of 1,954.88 kg and a waste cost value of IDR 18,888,958. The residual iron content of Ø6 was 2.72%, D8 was 0.48%, D10 was 0.04%, D13 was 4.43%, D16 was 0.35%, and D19 was 1.08%.