Which AWS standard outlines the requirements for welding with low alloy steel plate?

The correct choice pertains to the AWS D1.1 standard, which specifically addresses the requirements for welding steel, including low alloy steel plate. AWS D1.1 is the American Welding Society's code for structural welding of steel, providing essential guidelines on design, fabrication, inspection, and quality assurance pertinent to various types of steel structures.

This standard covers a wide range of applications, including but not limited to, low alloy steel welding. It sets forth the essential variables for welding procedures, qualification requirements for welders, and inspection methods, thus ensuring that the welding processes adhere to safety and structural integrity standards.

Other options address different materials or specific applications. For example, AWS D1.5 focuses on bridges, and AWS D1.4 is specific to welding reinforcing steel. Similarly, AWS D1.2 covers aluminum. Therefore, while it is critical to understand the different standards, AWS D1.1 is the most relevant for low alloy steel plate welding practices.