Steel pre engineered buildings are quickly becoming the preferred choice over RCC for factories, warehouses and large span industrial structures across Tamil Nadu. A PEB is a steel structure where columns, rafters and other framing members are designed and fabricated at a factory to exact specifications, then bolted together on site instead of being welded from scratch. The biggest draw is speed, since steel components are manufactured off site while foundation work happens in parallel, and monsoon delays that affect concrete curing don't slow down steel production the same way. For warehouses and factory sheds needing wide, column free floor space, PEBs can achieve long spans that would need much heavier beam work in RCC, giving more usable floor area. Steel structures are also lighter than RCC for the same span, reducing pressure on foundations, useful in coastal regions like Chennai. Contractors like Thirumala Roofings and Structurals have been part of this shift across Tamil Nadu. https://www.thirumalaroofings.com/