MANAJEMEN PABRIKASI BESI TULANGAN PADA PROYEK DREAM VILLA DI KABUPATEN BADUNG MENGGUNAKAN METODE BAR BENDING SCHEDULE (BBS)

Abstract

Reinforcing steel is a critical material in construction projects; therefore, proper planning and management are required to minimize material waste. This study aims to analyze the required quantity and waste percentage of reinforcing steel in the Dream Villa project located in Badung Regency using the Bar Bending Schedule (BBS) method. A descriptive-analytic method with a comparative approach was employed, using secondary data such as structural shop drawings, the Work Plan and Specifications (RKS), and standards SNI 2052:2017 and SNI 2847:2013. Cutting patterns were produced using AutoCAD, while calculations of bar lengths, quantities, and total weight were carried out using Microsoft Excel. The findings show that BBS provides accurate and structured reinforcement data for each structural element, including pile caps, columns, sloofs, beams, and ring beams. The study reveals varying waste percentages across structural elements. Low waste values were found in columns, such as D13 main reinforcement with 1.29% waste and Ø8 stirrups with only 0.04% waste. Conversely, the highest waste occurred in ring beam D13 reinforcement at 25.75%, mainly due to suboptimal cutting lengths relative to standard bar lengths. Waste variation is influenced by the type of structural element, bar diameter, cutting precision, and the reutilization of leftover pieces. Overall, the BBS method is effective for material planning; however, field efficiency strongly depends on proper fabrication management. Improved cutting supervision and optimization of leftover reinforcement usage are necessary to reduce steel waste in construction projects.