What is the minimum thickness of metal an AWS D1.1 welder can work on?

The minimum thickness of metal that an AWS D1.1 welder can work on is indeed 1/8". This specification is significant because it ensures that sufficient material is available to achieve a proper weld. Welding thinner materials may result in issues such as inadequate penetration, distortion, or burn-through, which can compromise the integrity and strength of the welded joint. By establishing a minimum thickness of 1/8", the AWS D1.1 code helps to ensure that welders have a manageable thickness to work with, allowing for more effective welding techniques and processes while minimizing risks associated with thinner sections. This requirement also helps in maintaining overall quality and safety standards within structural welding and fabrication.