AASHTO/AWS D1.5M/D1.5:2008. Table of Contents

Transcription

1 Table of Contents Personnel...v Foreword...ix List of Tables... xviii List of Figures...xix List of Forms...xxi 1. General Provisions Application Base Metal Welding Processes Fabricator Requirements Definitions Welding Symbols Safety Precautions Standard Units of Measurement Welding Procedure Specifications (WPSs) Mechanical Testing Reference Documents Design of Welded Connections...5 Part A General Requirements Drawings Basic Unit Stresses Effective Weld Areas, Lengths, Throats, and Sizes...6 Part B Structural Details General Welded Filler Plates PJP Groove Welds...7 Part C Details of Welded Joints Joint Qualification Details of Fillet Welds Details of Plug and Slot Welds Lap Joints Corner and T-Joints CJP Groove Welds PJP Groove Welds Prohibited Types of Joints and Welds Combinations of Welds Welds in Combination with Rivets and Bolts Connection Details Workmanship General Requirements Preparation of Base Metal Assembly...54 xiii

2 3.4 Control of Distortion and Shrinkage Dimensional Tolerances Weld Profiles Repairs Peening Caulking Arc Strikes Weld Cleaning Weld Termination Weld Backing Technique...65 Part A General Requirements Filler Metal Requirements Preheat and Interpass Temperature Requirements Heat Input Control for Grade 690 [100] and 690W [100W] Stress Relief Heat Treatment...67 Part B Shielded Metal Arc Welding (SMAW) Electrodes for SMAW Procedures for SMAW...68 Part C Submerged Arc Welding (SAW) General Requirements Electrodes and Fluxes for SAW Procedures for SAW with a Single Electrode Procedures for SAW with Parallel Electrodes Procedures for SAW with Multiple Electrodes...71 Part D Gas Metal Arc Welding (GMAW) and Flux Cored Arc Welding (FCAW) Electrodes Shielding Gas Procedures for GMAW and FCAW with a Single Electrode...73 Part E Electroslag Welding (ESW) and Electrogas Welding (EGW) Qualification of Process, WPSs, and Joint Details Mechanical Properties Condition of Electrodes and Guide Tubes Shielding Gas Condition of Flux Procedures for ESW and EGW...74 Part F Plug and Slot Welds Plug Welds Slot Welds Plug and Slot Welds...75 Part G Control of Production Welding Variables Tests Control of Variables Calibration of Equipment Current Control Qualification Scope...85 Part A Welding Procedure Specification (WPS) Qualification Approval...85 xiv

3 5.2 Qualification Responsibility Duration Base Metal Welding Consumables Test Plate Thickness General Requirements for WPS Qualification Position of Test Welds Options for WPS Qualification or Prequalification Fillet Weld WPS Qualification Prequalified WPS Heat Input WPS Production Procedure WPS ESW and EGW Type of Tests and Purpose Weld Specimens Number, Type, and Preparation Nondestructive Testing (NDT) Method of Testing Specimens Test Results Required Retests...93 Part B Welder, Welding Operator, and Tack Welder Qualification General Requirements Production Welding Positions Qualified Qualification Tests Required Limitations of Variables Test Specimens: Number, Type, and Preparation Method of Testing Specimens Test Results Required Retests Inspection Part A General Requirements General Inspection of Materials Inspection of WPS Qualification and Equipment Inspection of Welder, Welding Operator, and Tack Welder Qualifications Inspection of Work and Records Obligations of the Contractor Nondestructive Testing (NDT) Part B Radiographic Testing (RT) of Groove Welds in Butt Joints Extent of Testing General RT Procedure Acceptability of Welds Examination, Report, and Disposition of Radiographs Part C Ultrasonic Testing (UT) of Groove Welds General Extent of Testing UT Equipment Reference Standards Equipment Qualification Calibration for Testing Testing Procedures xv

4 6.20 Preparation and Disposition of Reports Calibration of the UT Unit with IIW or Other Approved Reference Blocks Equipment Qualification Procedures Flaw Size Evaluation Procedures Scanning Patterns Examples of db Accuracy Certification Part D Weld Acceptance Criteria Quality of Welds Stud Welding Scope General Requirements Mechanical Requirements Workmanship Technique Stud Application Qualification Requirements Production Control Inspection Requirements Statically Loaded Structures (No Applications within this code) Welded Steel Bridges (The provisions of this clause in ANSI/AASHTO/AWS [D1.5-96] were distributed throughout AASHTO/AWS [D1.5M/D1.5:2002] and remain so for this edition) Tubular Structures (No Applications within this code) Strengthening and Repairing Existing Structures (No Applications within this code) AASHTO/AWS Fracture Control Plan (FCP) for Nonredundant Members General Provisions Definitions Contract Documents Base Metal Requirements Welding Processes Consumable Requirements Welding Procedure Specification (WPS) Certification and Qualification As-Received Inspection of Base Metal Thermal Cutting Repair of Base Metal Straightening, Curving, and Cambering Tack Welds and Temporary Welds Preheat and Interpass Temperature Control Postweld Thermal Treatments Weld Inspection Repair Welding Annexes Cross Reference for Renumbered Annexes from the 2002 Code to the 2008 Code Annex A (Normative) Effective Throat Annex B (Normative) Effective Throats of Fillet Welds in Skewed T-Joints Annex C (Normative) Flatness of Girder Webs Bridges Annex D (Normative) Terms and Definitions Annex E (Normative) Manufacturer s Stud Base Qualification Requirements xvi

5 Annex F (Normative) Part A Qualification and Calibration of the UT Unit with Other Approved Annex F (Normative) Reference Blocks Annex F (Normative) Part B UT Equipment Qualification Procedures Annex G (Normative) Guidelines on Alternative Methods for Determining Preheat Annex H (Normative) Welding Requirements for Conventional, Nonfracture Critical M270M [M270] Annex H (Normative) (A 709M [A 709]) HPS 485W [HPS 70W] Components with Reduced Preheat Annex H (Normative) and Interpass Temperature Annex I (Informative) Weld Quality Requirements for Tension Joints Annex J (Informative) Description of Common Weld and Base Metal Discontinuities Annex K (Informative) Short Circuiting Transfer Annex L (Informative) Suggested Sample Welding Forms Annex M (Informative) Guidelines for Preparation of Technical Inquiries for the Joint AASHTO/AWS Annex M (Informative) Subcommittee on Bridge Welding Annex N (Informative) Reference Documents Commentary on Bridge Welding Code Foreword Index List of AWS Documents on Structural Welding xvii

6 List of Tables Table 2.1 Minimum Fillet Weld Size Minimum Effective Weld Size for PJP Groove Welds Limits on Acceptability and Repair of Cut Edge Discontinuities of Material Camber Tolerance for Typical Girder Camber Tolerance for Girders without a Designed Concrete Haunch Matching Filler Metal Requirements for WPSs Qualified in Conformance with Matching Filler Metal Requirements for WPSs Qualified in Conformance with Filler Metal Requirements for Exposed Bare Application of M270M [M270] (A709M [A709]) Gr. 345W [50W] and Gr. HPS 345W [HPS 50W] Steel Minimum Preheat and Interpass Temperature, C [ F] Minimum Holding Time Alternate Stress-Relief Heat Treatment Allowable Atmospheric Exposure of Low-Hydrogen SMAW Electrodes WPS Qualification Requirements for Consumables WPS Qualification or Prequalification Options PQR Essential Variable Changes for WPSs Qualified per Additional PQR Essential Variable Changes Requiring WPS Requalification for ESW or EGW Required Number of Test Specimens WPS Qualification Welder Qualification Type and Position Limitations Number and Type of Specimens and Range of Thickness Qualified Welder and Welding Operator Qualification Hole-Type IQI Requirements A Wire IQI Requirements Testing Angle UT Acceptance-Rejection Criteria Tensile Stress UT Acceptance-Rejection Criteria Compressive Stress Mechanical Property Requirements for Studs Minimum Fillet Weld Size for Small Diameter Studs CVN Test Values of Weld Metal with Matching Strength Tack Weld Requirements M270M [M270] (A709M [A709]) Gr. 250 [36], 345 [50] Minimum Preheat and Interpass Temperatures, C [ F] M270M [M270] (A709M [A709]) Gr. 345W [50W], HPS 345W [HPS 50W], HPS 485W [HPS 70W] Minimum Preheat and Interpass Temperatures, C [ F] M270M [M270] (A709M [A709]) Gr. 690 [100], 690W [100W] Minimum and Maximum Preheat/Interpass Temperatures, C [ F] B.1 Equivalent Fillet Weld Leg Size Factors for Skewed T-Joints, R = G.1 Susceptibility Index Grouping as Function of Hydrogen Level H and Composition Parameter P cm G.2 Minimum Preheat and Interpass Temperatures for Three Levels of Restraint H.1 Minimum Preheat and Interpass Temperature for M270M [M270] (A709M [A709]) HPS 485W [HPS 70W], C [ F] H.2 Filler Metals for Use with the Reduced Preheat of Table H.1, Diffusible Hydrogen Levels 4 ml/100 g Maximum J.1 Common Types of Discontinuities K.1 Typical Current Ranges for Short Circuiting Transfer Gas Metal Arc Welding (GMAW-S) of Steel xviii

7 List of Figures Figure 2.1 Filler Plates Less Than 6 mm [1/4 in] Thick Filler Plates 6 mm [1/4 in] or Thicker Details for Fillet Welds Details of Welded Joints for CJP Groove Welds Details of Welded Joints for PJP Groove Welds Fillet Welds on Opposite Sides of a Common Plane of Contact Transition of Thickness at Butt Joints of Parts Having Unequal Thickness Transition of Width at Butt Joints of Parts Having Unequal Width Discontinuities in Cut Plate Workmanship Tolerances in Assembly of Groove Welded Joints Acceptable and Unacceptable Weld Profiles Weld Bead in Which Depth and Width Exceed the Width of the Weld Face WPS Qualification or Pretest Test Plate A WPS Verification Test Plate B Weld Soundness Test Plate for Details Not Conforming to Figure 2.4 or 2.5 Test Plate C Positions of Fillet Welds Positions of Groove Welds Position of Test Plates for Groove Welds Position of Test Plates for Fillet Welds Fillet Weld Soundness Test (Macroetch) for WPS Qualification Test Plate D Standard Round All-Weld-Metal Tension Specimen Reduced Section Tension Specimen Side-Bend Specimen Face- and Root-Bend Specimen CVN Test Specimen Type A Guided Bend Test Jig Alternative Wraparound Guided Bend Test Jig Alternative Roller-Equipped Guided Bend Test Jig for Bottom Ejection of Test Specimen Test Plate for Unlimited Thickness Welder Qualification Optional Test Plate for Unlimited Thickness Horizontal Position Welder Qualification Test Plate for Limited Thickness All Positions Welder Qualification Optional Test Plate for Limited Thickness Horizontal Position Welder Qualification Fillet-Weld-Break and Macroetch Test Plate Welder Qualification Option Fillet Weld Root-Bend Test Plate Welder Qualification Option Plug Weld Macroetch Test Plate Welder Qualification Test Plate for Unlimited Thickness Welding Operator Qualification Butt Joint for Welding Operator Qualification ESW and EGW Fillet-Weld-Break and Macroetch Test Plate Welding Operator Qualification Option Fillet Weld Root Bend Test Plate Welding Operator Qualification Option Fillet-Weld-Break Specimen Tack Welder Qualification Method of Rupturing Specimen Tack Welder Qualification A Radiographic Identification and Hole-Type or Wire IQI Locations on Approximately Equal Thickness Joints 250 mm [10 in] and Greater in Length xix

8 Figure 6.1B Radiographic Identification and Hole-Type or Wire IQI Locations on Approximately Equal Thickness Joints Less than 250 mm [10 in] in Length C Radiographic Identification and Hole-Type or Wire IQI Locations on Transition Joints 250 mm [10 in] and Greater in Length D Radiographic Identification and Hole-Type or Wire IQI Locations on Transition Joints Less than 250 mm [10 in] in Length E Hole-Type IQI Design F Wire-Type IQI RT Edge Block Placement Transducer Crystal Qualification Procedure of Search Unit Using IIW Reference Block A International Institute of Welding (IIW) UT Reference Blocks B Other Approved UT Reference Blocks Transducer Positions (Typical) Plan View of UT Scanning Patterns Weld Quality Requirements for Discontinuities Occurring in Tension Welds (Limitations of Porosity and Fusion Discontinuities) Weld Requirements for Discontinuities Occurring in Compression Welds (Limitations of Porosity or Fusion Type Discontinuities) Dimension and Tolerances of Standard-Type Shear Connectors Typical Tension Test Fixture Torque Testing Arrangement and Table of Testing Torques E.1A Bend Testing Device E.1B Suggested Type of Device for Qualification Testing of Small Studs F.1 Example of the Use of Form F-1 UT Unit Certification F.2 Example of Form F F.3 Example of the Use of Form F F.4 Example of Form F F.5 Example of the Use of Form F F.6 Form F-4 Report of UT of Welds G.1 Zone Classification of Steels G.2 Critical Cooling Rate for 350 HV and 400 HV G.3 Charts to Determine Cooling Rates for Single-Pass Submerged Arc Fillet Welds G.4 Relation Between Fillet Weld Size and Energy Input J.1 Weld in Butt Joint J.2 Weld in Corner Joint J.3 Weld in T-Joint J.4 Weld in Lap Joint J.5 Single-Pass Fillet Weld in T-Joint J.6 Single-V-Groove Weld in Butt Joint K.1 Oscillograms and Sketches of Short Circuiting Arc Metal Transfer Commentary C-2.1 Details of Alternative Groove Preparations for Corner Joint C-3.1 Examples of Unacceptable Reentrant Corners C-3.2 Examples of Good Practice for Cutting Copes C-3.3 Permissible Offset in Abutting Members C-3.4 Correction of Misaligned Members C-3.5 Illustration of Camber Tolerances for Steel Beams C-3.6 Measurement of Flange Warpage and Tilt C-3.7 Tolerances Bearing Points xx

9 List of Forms Form L-1 Certificate of Conformance to Requirements for Welding Electrodes L-2 Sample Welding Procedure Specification L-3 Procedure Qualification Record (PQR) for Qualification, Pretest, and Verification Results L-4 Procedure Qualification Record (PQR) Worksheet L-5 Welder and Welding Operator Qualification Record L-6 Report of Radiographic Examination of Welds L-7 Report of Magnetic Particle Examination of Welds xxi