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BS 7123:1989

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Specification for metal arc welding of steel for concrete reinforcement
Available format(s)

Hardcopy , PDF

Superseded date

03-31-2008

Language(s)

English

Published date

09-29-1989

Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. Information and requirements to be agreed and to be
     documented
3.1 Information to be supplied by the client
3.2 Information to be supplied by either of the
     contracting parties
3.3 Requirements to be agreed
4. Materials
4.1 Parent metal
4.2 Backing material
5. Approval and testing of welding procedures
6. Approval and testing of welders
7. Inspection and testing
7.1 General
7.2 Quality of welds
8. Metal arc welding equipment
8.1 Equipment
8.2 Instrumentation
9. Metal arc welding consumables
9.1 Manual metal-arc welding
9.2 Gas-shielded welding
9.3 Non-shielded welding
9.4 Storage and handling
10. Welded connections
10.1 General
10.2 Butt joints
10.3 Splice joints
10.4 Lap joints
10.5 Cruciform joints
10.6 Tack welds (locational)
10.7 Preparation for welding
10.8 Assembly
10.9 Weld design
11. Welding practice
11.1 Adverse weather conditions
11.2 Preheating
11.3 Heat build-up during welding
11.4 Stray-arcing
11.5 Cleaning
11.6 Tack welds
11.7 Defective joints
11.8 Welding processes
11.9 Welding procedures
12. Approval of welding procedures
12.1 Approved procedures
12.2 Limitation of variable
12.3 Welding procedure approval tests
13. Welder approval
13.1 General
13.2 Changes not affecting approval
13.3 Limitation of variables
13.4 Number and type of tests
13.5 Acceptance levels
Appendices
A. Tack welds for locational purposes
B. Welding procedure sheet
Tables
1. Minimum preheating temperatures for butt joints
     and cruciform joints: hydrogen controlled
     consumables
2. Minimum preheating temperatures for butt joints
     and cruciform joints: non-hydrogen controlled
     consumables
3. Arc energy of runout lengths for electrodes of
     efficiency <110% complying with BS 639
4. Arc energy of runout lengths for electrodes of
     efficiency >100% and <130% complying with BS 639
5. Arc energy of runout lengths for electrodes of
     efficiency >130% complying with BS 639
6. Tests required for procedure approval
7. Acceptance levels (visual and macro examination)
8. Acceptance levels (radiographic examination) for
     butt welds
9. Tests for welder approval
10. Electrode diameters and welding currents for tack
     welds for locational purposes
Figures
1. Flare-bevel and flare-vee fillet welds
2. Butt joints
3. Splice joints
4. Lap joints
5. Start and finish of a lap joint
6. Cruciform joint
7. Effective throat thickness
8. Preheating temperatures for lap joints, splice
     joints and tack welded lap joints in steel bars
     having a carbon equivalent of 0.42% or less
9. Preheating temperatures for lap joints, splice
     joints and tack welded lap joints in steel bars
     having a carbon equivalent of >0.42% to 0.51%
10. Welding positions for tests on butt joints
11. Welding positions for tests on splice joints
12. Tensile test pieces and macro examination test
     specimens for procedure approval and welder
     approval tests
13. Suitable weldment forms for tack welds for
     locational purposes

Requirements for materials of construction, methods for the approval of welding procedures and welders, workmanship and inspection requirements for the joining of reinforcing steel for concrete structures.

Committee
WEE/43
DevelopmentNote
Supersedes 87/70393 DC and 91/76987 DC (09/2005)
DocumentType
Standard
Pages
32
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

DD ENV 1992-1.1 : DRAFT MAY 1992 EUROCODE 2: DESIGN OF CONCRETE STRUCTURES - GENERAL RULES FOR BUILDINGS (TOGETHER WITH UNITED KINGDOM NATIONAL APPLICATION DOCUMENT)
BS 4449:1997 Specification for carbon steel bars for the reinforcement of concrete

BS 4449:1988 Specification for carbon steel bars for the reinforcement of concrete
BS 7084:1989 Specification for carbon and carbon-manganese steel tubular cored welding electrodes
BS 5135:1984 Specification for arc welding of carbon and carbon manganese steels
BS 638-5:1988 Arc welding power sources, equipment and accessories Specification for accessories
BS 638-8:1984 Arc welding power sources, equipment and accessories Specification for electrode holders and hand held torches and guns for MIG, MAG and TIG welding
BS 499-1:1983 Welding terms and symbols. Glossary for welding, brazing and thermal cutting
BS 638-4:1979 Arc welding power sources, equipment and accessories Specification for welding cables
BS 6693-2:1986 Diffusible hydrogen Method for determination of hydrogen in manual metal-arc weld metal
BS 4105:1967 Specification for liquid carbon dioxide, industrial
BS 638-2:1979 Arc welding power sources, equipment and accessories Specification for air cooled power sources for manual metal-arc welding with covered electrodes and for TIG welding
BS 638-7:1984 Arc welding power sources, equipment and accessories Specification for safety requirements for installation and use
BS 638-3:1979 Arc welding power sources, equipment and accessories Specification for air cooled power sources for semi-automatic and automatic metal-arc welding
BS 638-1:1979 Arc welding power sources, equipment and accessories Specification for oil cooled power sources for manual, semi-automatic and automatic metal-arc welding and for TIG welding
BS 638-6:1984 Arc welding power sources, equipment and accessories Specification for safety requirements for construction

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