What does the 'T' in AWS code represent regarding specifications?

The 'T' in AWS code stands for Thickness. This designation is important as it relates to the specifications of materials used in welding. In the context of welding, thickness affects many factors, including the welding process selected, the amount of heat required, and the characteristics of the weld bead. The specifications outlined in AWS codes take into account different thicknesses to ensure that welds meet the required strength and performance criteria for various applications. By specifying thickness, the code provides guidance on how to approach welding procedures, including preheat requirements and filler material choices, ensuring the quality and safety of the welded structure. Understanding this aspect is crucial for welders and engineers to comply with code requirements and achieve reliable welds.