The AWS D1.1/D1.1M: Structural Welding Code - Steel is the premier standard for the fabrication and erection of welded steel structures. Recognized as the definitive guide for structural welding, this code provides comprehensive requirements to ensure the highest levels of safety, quality, and performance in steel construction.

When specified in contract documents, compliance with all provisions of this code is mandatory, unless modified or exempted by the Engineer or contractual agreements. Covering welded steel structures made from tubes, plate, and structural shapes, the D1.1 standard is essential for projects subject to static or cyclic loading, making it indispensable for engineers, fabricators, inspectors, and welders.


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Key Features & Benefits:





Welding Design & Procedures – Detailed guidelines for weld design, joint preparation, and approved welding techniques.



Qualification & Fabrication – Clear criteria for welder and procedure qualifications, ensuring consistent, high-quality fabrication.



Inspection & Repair – Rigorous inspection criteria and repair protocols to maintain structural integrity.



Technical Depth – Trusted by professionals for authoritative answers on structural welding best practices.

Whether you're involved in bridges, buildings, industrial structures, or heavy fabrication, the AWS D1.1/D1.1M code is the go-to resource for achieving code-compliant, durable, and reliable welded steel structures.

The Industry Standard for Excellence in Structural Welding.

This code contains the requirements for fabricating and erecting welded steel structures. When this code is stipulated in contract documents, conformance with all provisions of the code shall be required, except for those provisions that the Engineer (see 1.5.1) or contract documents specifically modifies or exempts.

The following is a summary of the code clauses:

General Requirements.

This clause contains basic information on the scope and limitations of the code, key definitions, and the major responsibilities of the parties involved with steel fabrication.

Normative References.

This clause contains a list of reference documents that assist the user in implementation of this code or are required for implementation.

Terms and Definitions.

This clause contains terms and definitions as they relate to this code.

Design of Welded Connections.

This clause contains requirements for the design of welded connections composed of tubular, or nontubular, product form members.

Prequalification of WPSs.

This clause contains the requirements for exempting a Welding Procedure Specification (WPS) from the WPS qualification requirements of this code.

Qualification.

This clause contains the requirements for WPS qualification and the performance qualification tests required to be passed by all welding personnel (welders, welding operators, and tack welders).

Fabrication.

This clause contains general fabrication and erection requirements applicable to welded steel structures governed by this code, including the requirements for base metals, welding consumables, welding technique, welded details, material preparation and assembly, workmanship, weld repair, and other requirements.

Inspection.

This clause contains criteria for the qualifications and responsibilities of inspectors, acceptance criteria for production welds, and standard procedures for performing visual inspection and nondestructive testing (NDT).

Stud Welding.

This clause contains the requirements for the welding of studs to structural steel.

Tubular Structures.

This clause contains exclusive tubular requirements. Additionally, the requirements of all other clauses apply to tubulars, unless specifically noted otherwise.

Strengthening and Repair of Existing Structures.

This clause contains basic information pertinent to the welded modification or repair of existing steel structures.