Evaluasi Komparatif Material Dinding Ditinjau Dari Aspek Kualitas, Durasi Pelaksanaan Dan Efisiensi Biaya Pada Pekerjaan Konstruksi

Abstract

Reinforcing steel is one of the most essential materials in reinforced concrete construction; therefore, accurate planning and effective management are crucial to ensure efficient material usage. In practice, cutting reinforcing bars often generates material waste due to incompatibility between required cutting lengths and standard bar lengths, fabrication errors, and non-optimal cutting patterns. This study aims to analyze the quantity requirements and waste of reinforcing steel in the Dream Villa construction project in Badung Regency using the Bar Bending Schedule (BBS) method. A descriptive-analytic research method was employed using secondary data, including structural shop drawings, the Work Plan and Specifications (RKS), and standards SNI 2052:2017 and SNI 2847:2013. The analysis was conducted by preparing cutting patterns using AutoCAD and calculating reinforcement requirements using BBS tables processed in Microsoft Excel.The results show that the BBS method provides detailed reinforcement data, including bar diameter, cutting length, number of bars, and total weight. Waste percentages varied across structural elements, ranging from very low values, such as column stirrups Ø8 at 0.04%, to very high values, such as ring beam main reinforcement D13 at 25.75%. This variation is influenced by the complexity of structural elements, bar diameter, cutting accuracy, and the utilization of leftover pieces. Overall, the BBS method is effective for material planning; however, actual field efficiency depends heavily on fabrication management. Improving cutting supervision and optimizing cutting patterns are essential to reduce waste and enhance the efficiency of reinforcing steel usage in construction projects.