Principales Cambios AWS D1.1 2015

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American Welding Society

OVERVIEW OF MAJOR CHANGES

AWS D1.1/D1.1M:2015 STRUCTURAL WELDING CODE – STEEL For full details of all changes, please refer to the foreword of AWS D1.1/D1.1M:2015 See full PDF or preview file (https://pubs.aws.org/ (https://pubs.aws.org/Download_PDFS/D1.1-2015Download_PDFS/D1.1-2015-PV PV.pdf) .pdf)


AWS D1.1/D1.1M:2015 STRUCTURAL WELDING CODE – STEEL

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GENERAL

• All tubular provisions, tables, and figures moved to a new Clause 9, “Tubular Structures” with a corresponding new section of commentary, divided as follows: Part A – Design Part B – Prequalification Part C – WPS Qualification Part D – Performance (Welder) Qualification Part E – Fabrication Part F – Inspection • Incorporation of AWS A5.36/A5.36M, Specification for Carbon and Low- Alloy Steel Flux Cored Electrodes for Flux Cored Arc Welding and Metal Cored Electrodes for Gas Metal Arc Welding, fixed and open classification requirements • ASTM A709 Grades 100 and 100W deleted and Grade HPS 100W [HPS 690W] added


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CLAUSE 2 - DESIGN

• Clarification regarding calculation of effective throat of a combination PJP flare bevel groove weld and fillet weld • Additional provisions for wrapping welds on opposite sides of a common plane to permit seal welding • Fatigue curve cases and figures revised to align with the American Institute of Steel Construction, AISC 360


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CLAUSES 3 AND 4 PREQUALIFICATION AND QUALIFICATION:

• Clarification of conditions for backing other than steel in prequalified WPSs • Reorganization and update of Prequalified Base Metal and Filler Metal Combinations for Matching Strength and Alignment with Prequalified Minimum Preheat and Interpass Temperature • New table for prequalified filler metals (including AWS A5.36) • New figure for prequalified fillet weld joint details • New figure for prequalified CJP groove, T-, and corner joint s • Clarification of CVN Test requirements for sub-sized specimens


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CLAUSE 5 - FABRICATION:

• Reorganization of AWS Filler metal specifications for GMAW and FCAW including AWS A5.36 • Clarification of baking requirements for low-hydrogen electrodes for ASTM A514 and A517 steels • Clarification of preheat and interpass temperature requirements • Updated requirements for backing thickness • Updated requirements for substrate cleanliness • Clarification of provisions for oxygen gouging • Clarification when locations of the depth of the web from tension flanges of beams or girders are considered outside the tension zone for tack welds and construction aid welds • Revisions to the location and sequence of member and element splices • Clarification when minimum size fillet welds are exempt from reinforcement and convexity limitations


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CLAUSE 6 - INSPECTION:

• Clarification regarding retesting based on quality of work • New table for qualification and calibrations requirements of U/T equipment • Clarification regarding calibration for sensitivity and horizontal sweep of U/T equipment

ANNEXES:

• New Figures to clarify effective throat for various joint types and combinations • Sample welding forms extensively revised – see http://go.aws.org/D1forms

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Principales Cambios AWS D1.1 2015

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