Description
AWS D1.1/D1.1M – Structural Welding Code—Steel
The AWS D1.1 standard provides the comprehensive requirements for the fabrication and erection of welded steel structures. When referenced in contract documents, full compliance with this code is required unless specific provisions are modified by the Engineer or otherwise exempted. As one of the most widely used welding codes in the world, AWS D1.1 ensures consistent weld quality, structural reliability, and safety in buildings, bridges, industrial structures, and steel fabrication projects.
This edition delivers significant updates developed through extensive input from users, engineers, and industry experts, making it the most refined version to date.
Major Updates in the 2025 Edition
The AWS D1 committees implemented major technical and editorial improvements across nearly all clauses. Key enhancements include:
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New and clarified terminology to improve consistency and remove ambiguities throughout the code.
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Removal of all references to AWS A5.36/A5.36M, following the withdrawal of that specification.
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Updated references to relevant filler metal specifications, including AWS A5.18, A5.20, A5.28, and A5.29, which continue to be applicable.
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Numerous refinements incorporated from industry feedback and errata from the 2020 edition, improving clarity and usability.
These changes strengthen the reliability of welding procedures, qualification processes, and fabrication standards across structural steel applications.
Clause Overview
The AWS D1.1/D1.1M code is organized into the following major clauses:
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General Requirements – Defines the scope, limitations, responsibilities, and essential concepts used throughout the code.
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Normative References – Lists supporting reference documents necessary for proper application.
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Terms and Definitions – Provides definitions of all technical terms used in the code, including newly added entries.
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Design of Welded Connections – Requirements for designing welded joints for tubular and nontubular steel members.
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Prequalification of WPSs – Conditions under which a Welding Procedure Specification can be exempt from qualification testing.
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Qualification – Qualification methods for WPSs and performance qualification of welders, welding operators, and tack welders.
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Fabrication – Requirements for materials, welding consumables, welding techniques, assembly, workmanship, weld quality, and repair procedures.
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Inspection – Qualifications and responsibilities of inspectors, acceptance criteria, and procedures for visual inspection and nondestructive testing (NDT).
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Stud Welding – Requirements for welding studs to structural steel.
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Tubular Structures – Rules specifically for tubular construction, supplemented by requirements from other clauses.
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Strengthening and Repair – Technical guidance for modifying or repairing existing steel structures using welded solutions.
Product Details
Revision: 2025 Edition
Published Date: 2025
Status: Active, Most Current
Document Language: English
Published By: AWS
Page Count: 646
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