What does EA mean in steel terms?

In steel terminology, "EA" typically stands for "Effective Area." It refers to the portion of a cross-section of a structural member that is effective in resisting loads, particularly in the context of design and analysis of beams, columns, and other structural elements. The effective area takes into account factors like material properties and the presence of any defects or reductions in cross-section due to fabrication or corrosion. Understanding EA is crucial for ensuring the safety and reliability of steel structures.