BIM-Driven Modular Steel Construction: Enhancing Prefabrication and On-Site Assembly

Building Information Modelling (BIM) has emerged as a transformative enabler for modular steel construction by providing parametric modelling, coordinated detailing, digital fabrication integration, and 4D construction sequencing. Modular steel systems require high accuracy in design, fabrication, logistics, and assembly, making BIM indispensable for reducing rework, improving coordination, and enabling just-in-time production. This paper examines the integration of BIM within modular steel construction, focusing on prefabrication accuracy, clash-free detailing, sequencing simulation, and digital manufacture. The study includes a comprehensive literature review, a methodology grounded in BIM-enabled workflows, and analysis of two major case studies Chennai International Airport Terminal T2 and Shanghai Tower. Findings indicate that BIM significantly improves productivity, reduces site conflicts, minimizes waste, and enhances assembly predictability, particularly in the Indian context where BIM adoption faces challenges such as limited skills, high costs, and low SME readiness. The paper concludes with strategic recommendations for India’s modular steel industry and outlines future research directions.