The common design codes and standards applied to steel I-beams include the American Institute of Steel Construction (AISC) Manual of Steel Construction, which provides guidelines for design, fabrication, and erection of steel structures. Additionally, the International Building Code (IBC) and American Society of Civil Engineers (ASCE) 7 Standard for Minimum Design Loads for Buildings and Other Structures outline the minimum requirements for structural design and load calculations. These codes and standards ensure the safety and reliability of steel I-beam structures.