Optimasi Desain Struktur Atap Bentang Panjang Menggunakan Sistem Rangka Baja Ringan

Abstract

Long-span roof structures play a critical role in the development of public and industrial facilities such as sports halls, aircraft hangars, warehouses, exhibition centers, and large-scale commercial buildings. The demand for wide column-free spaces requires structural systems that ensure strength, stability, and material efficiency. One widely adopted solution is the use of lightweight steel truss systems due to their low weight, high strength, ease of installation, and cost efficiency compared to conventional materials. This study aims to analyze and optimize the design of long-span roof structures using lightweight steel trusses to achieve safe, efficient, and economical configurations. A quantitative approach was applied through structural simulation and analysis using engineering software. Several variations in span length, cross-sectional dimensions, and truss configurations were evaluated to assess their effects on load capacity, deflection, stress, and structural stability. The analysis considered dead loads, live loads, and wind loads based on applicable design standards. Material requirements for each model were also compared to identify the most optimal design. The results indicate that lightweight steel truss systems provide reliable structural performance and meet safety requirements. Optimized configurations improve load distribution, reduce deflection, and enhance stability while minimizing material usage. Additionally, the optimized design lowers construction costs and accelerates project execution, supporting efficient and sustainable infrastructure development.