Analisa Perhitungan Quantity Take Off (Qto) Menggunakan Metode Bim (Revit) Dengan Perhitungan Metode Konvensional Pada Struktur Dan Arsitektur (Studi Kasus : Gedung Poli Klinik Rumah Sakit Umum Rupat Utara)

This study analyzes the calculation of Quantity Take Off (QTO) for reinforced concrete structural works by comparing the Building Information Modelling (BIM) method using Autodesk Revit with the conventional method based on AutoCAD drawings in the construction project of the North Rupat Public Hospital Outpatient Clinic Building. The objectives are to determine the QTO analysis process using BIM, obtain QTO results through Revit, and compare them with manual calculations. Primary data were obtained from as-built drawings and field observations, while secondary data came from project documents and literature. 3D modelling of structural elements such as foundations, pile caps, columns, beams, and floor slabs was carried out in Autodesk Revit 2023, followed by volume calculations and comparisons with manual calculations using Microsoft Excel. The analysis results showed small differences: pile cap PC1 reinforcement discrepancies ranged from 0.82% to 3.48%, PC2 from 1.82% to 3.48%, and PC3 averaged 1.5%. Column elements ranged from 0.5% to 2.1%, beams from 0.9% to 2.8%, and floor slabs at 0.6%. The overall average discrepancy was below 5%, in accordance with SNI tolerance standards. These findings demonstrate that Revit provides accurate, faster, and integrated results, minimizing human error and improving time efficiency and project documentation quality.