What is rolling margin of structural steel?

The rolling margin of structural steel refers to the permissible variation in the dimensions and weight of steel products due to the manufacturing process. It accounts for differences in thickness, width, and weight that can occur during rolling, which are typically specified as tolerances in industry standards. This margin ensures that the steel remains within acceptable limits for structural integrity and performance while allowing some flexibility in production. Understanding rolling margins is essential for engineers and architects to ensure that steel components meet design specifications.