The advantages of using composite design in pre-engineered buildings (PEBs), which combines steel and concrete to create lighter and more durable structures. This approach leads to cost savings, reduced weight, smaller foundations, and faster construction times compared to traditional all-steel or all-concrete structures. Composite designs allow for more efficient use of materials, reducing the overall material costs, and can lead to lighter structures, reducing the amount of concrete required for the foundations and further driving down construction expenses.