Comparative Study Of The Design Of A Pre-Engineered Building Having Multiple Cranes With And Without Laced Columns

Abstract

Pre-Engineered Buildings (PEBs) are widely used in modern industrial construction due to their advantages in terms of faster construction, reduced material usage, and overall economy. These structures are designed using standardized components and are highly efficient for large-span buildings. In industries where heavy crane systems are involved, structural performance and stability become critical design considerations. Therefore, selecting an appropriate column system is essential to ensure safety, serviceability, and cost-effectiveness of the structure.In the present study, a comparative analysis is carried out for a PEB structure. The structure is modeled and analyzed using STAAD.Pro software in accordance with IS 800:2007 provisions. Two configurations are considered: one with conventional rigid columns and the other with laced columns. Various parameters such as bending moment distribution, horizontal displacement, vertical deflection, utilization ratio, steel consumption, and overall project cost are evaluated to assess structural performance.The primary objective of this study is to address the need for an economical and efficient structural system for crane-supported industrial buildings. Conventional rigid frames often lead to higher steel consumption and increased cost, especially for large spans and heavy crane loads. Hence, this study investigates whether the use of laced columns can improve load distribution, reduce material usage, and enhance structural efficiency while satisfying all serviceability and safety requirements as per code provisions.The results of the study indicate that the laced column system offers significant advantages over the conventional frame. The steel consumption is reduced from 11,584 kg to 10,530 kg, resulting in a saving of 9.09%. The horizontal displacement decreases from 99.86 mm to 56.499 mm, showing an improvement of 43.36% in lateral stability, while vertical deflection remains within permissible limits. The utilization ratio improves from 0.952 to 0.988, indicating better material efficiency. Furthermore, the total project cost reduces from ₹3.17 crore to ₹2.88 crore, leading to a saving of approximately ₹28.8 lakh (9.09%). Hence, it can be concluded that laced column systems are structurally efficient, safe, and more economical for PEB structures with multiple crane systems.