IMPLEMENTATION OF BUILDING INFORMATION MODELLING (BIM) IN THE OFFICE BUILDING CONSTRUCTION PROJECT OF PT BAHTERA ELANG PERAK INDONESIA (BEPI)
DOI:
https://doi.org/10.26740/rekats.v14n01.p%20.Keywords:
BIM 5D, Tekla Structures, Bill of Quantity, Project SchedullingAbstract
Building Information Modeling (BIM) 5D is a technological innovation that integrates 3D models with quantity take-off to produce project scheduling (4D) and cost estimation (5D). This study compares cost estimation and project scheduling for the PT Bahtera Elang Perak Indonesia (BEPI) office building using the conventional calculation and the BIM Tekla Structures modelling. This quantitative research used 2D As-Built structural drawings of PT BEPI, which were modeled into 3D using Tekla Structures to obtain quantities for substructure, superstructure, and roof structure works. Cost estimation was calculated based on Unit Price Analysis (AHSP) from the Directorate General of Human Settlements and updated material and labor prices. The results showed a cost deviation of 5.68%, with the conventional method producing higher costs compared to BIM. The highest deviation occurred in beam reinforcement at 19.05%, while a negative deviation was observed in substructure reinforcement at -6.54%. For project scheduling, the BIM method required one week longer than the conventional method (contractor’s schedule). The implementation of 5D BIM has proven to produce more detailed and realistic quantity and cost estimations compared to conventional methods, demonstrating its potential to improve planning accuracy in construction projects.
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References
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