AWS D1.1/D1.1M

AWS D1.1 – 2020 Edition – Structural Welding Code – Steel

AWS D1.1 is a welding code and standard developed by the American Welding Society (AWS). The full title of this standard is “Structural Welding Code – Steel.” AWS D1.1 provides guidelines for the design, fabrication, inspection, and quality control of welded steel structures used in buildings, bridges, and other structural applications.

Scope: AWS D1.1 applies to the welding of structural steel components used in various industries, including construction, manufacturing, and infrastructure. It covers a wide range of topics related to welding processes, materials, and inspection requirements.

Key Features:

1. Welding Processes: AWS D1.1 addresses various welding processes, including shielded metal arc welding (SMAW), gas metal arc welding (GMAW), flux-cored arc welding (FCAW), and submerged arc welding (SAW). It provides specific requirements for each process to ensure the quality of welded joints.
2. Welding Procedure Specifications (WPS): The standard outlines the requirements for developing and qualifying welding procedure specifications. This involves establishing procedures that include essential variables such as welding parameters, joint details, and preheat and interpass temperature requirements.
3. Welder Qualification: AWS D1.1 provides criteria for qualifying welders, ensuring that they possess the skills and knowledge to produce sound welds according to the specified requirements. This includes performance qualification tests and visual inspection standards.
4. Material Requirements: The standard specifies material requirements for base metals and welding consumables. It ensures that the materials used in structural welding applications meet the necessary standards for strength, toughness, and other mechanical properties.
5. Inspection and Testing: AWS D1.1 outlines the inspection and testing procedures for welded joints, including visual inspection, non-destructive testing (such as ultrasonic and radiographic testing), and destructive testing (such as tensile and bend tests). It sets acceptance criteria to evaluate the quality of welded connections.
6. Quality Control: The standard emphasizes the importance of quality control measures throughout the welding process, from fabrication to inspection. It includes requirements for documentation, traceability, and records to ensure accountability and compliance.

Industry Application: AWS D1.1 is widely used in the construction and manufacturing industries, where structural steel welding is a fundamental aspect of building infrastructure and fabricating steel structures. Compliance with AWS D1.1 is often required by regulatory bodies, project specifications, and industry standards to ensure the safety and reliability of welded structural components. Welding engineers, inspectors, and personnel involved in structural welding projects refer to AWS D1.1 to establish and maintain the quality of welded connections in steel structures.

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