prEN ISO 17660-1

Welding - Welding of reinforcing steel - Part 1: Load-bearing welded joints (ISO/DIS 17660-1:2017)

2018-06-28: WI abandoned to follow cancellation of WI in ISO (notification from ISO to dataservice on 2018-06-18).

Schweißen - Schweißen von Betonstahl - Teil 1: Tragende Schweißverbindungen (ISO/DIS 17660-1:2017)

Dieser Teil von ISO 17660 gilt für das Schweißen von schweißgeeigneten Betonstählen und nichtrostenden Betonstählen für tragende Schweißverbindungen in Betrieben und auf der Baustelle. Er legt Anforderungen für Werkstoffe, Gestaltung und Ausführung von Schweißverbindungen, Schweißpersonal, Qualitätsanforde-rungen, Untersuchung und Prüfung fest.
Dieser Teil von ISO 17660 enthält auch Verbindungen zwischen Betonstahlstäben und anderen Stahlteilen, wie Verbindungseinheiten, Verankerungen, einschließlich vorgefertigter Einbauteile. Nichttragende Schweiß-verbindungen werden durch ISO 17660-2 erfasst.
Dieser Teil von ISO 17660 gilt nicht für die fabrikmäßige Herstellung von Betonstahlmatten und Gitter-trägern auf Mehrfachpunktschweißmaschinen oder auf Mehrfachbuckelschweißmaschinen.
Die Anforderungen dieses Teils von ISO 17660 gelten nur für ruhend beanspruchte Bauteile.
ANMERKUNG Für dynamisch beanspruchte Bauteile wird empfohlen, in Abhängigkeit der Stoßart und des Schweiß-prozesses, eine merkliche Verminderung der dynamischen Festigkeit des Betonstahls zu berücksichtigen.

Soudage - Soudage des aciers pour armature - Partie 1: Assemblages transmettant les efforts (ISO/DIS 17660-1:2017)

Varjenje - Varjenje betonskega jekla - 1. del: Obremenjeni zvarni spoji (ISO/DIS 17660-1:2017)

General Information

• Status: Not Published
• Publication Date: 20-Mar-2019
• Withdrawal Date: 22-Sep-2019
• ICS: 25.160.10 - Welding processes
• Technical Committee: CEN/TC 121 - Welding
• Drafting Committee: CEN/TC 121 - Welding
• Current Stage: 4098 - Decision to abandon - Enquiry
• Start Date: 18-Jun-2018
• Completion Date: 14-Apr-2025
• Ref Project: oSIST prEN ISO 17660-1:2017 - Welding - Welding of reinforcing steel - Part 1: Load-bearing welded joints (ISO/DIS 17660-1:2017)

Relations

• Revises: EN ISO 17660-1:2006 - Welding - Welding of reinforcing steel - Part 1: Load-bearing welded joints (ISO 17660-1:2006)
• Effective Date: 16-Nov-2014

Overview

prEN ISO 17660-1 / ISO/DIS 17660-1:2017 - Welding of reinforcing steel - Part 1: Load‑bearing welded joints provides a technical framework for the design, execution and qualification of load‑bearing welded joints in reinforcing steel used in concrete structures. The draft standard (ISO/DIS 17660-1:2017) was circulated for comment but the CEN working item was later abandoned (notification 2018-06-28) following cancellation of the ISO working item. The draft’s content remains a useful reference for industry stakeholders involved in welding reinforcing bars for structural applications.

Key topics and requirements

• Scope and terminology: Definitions, symbols and abbreviated terms specific to welding reinforcing steel and load‑bearing joints.
• Welding processes: Detailed reference to applicable welding process numbers (as listed in the draft) and guidance on their use for different joint types.
• Joint types: Requirements and recommended details for butt joints, lap joints, strap joints, cross joints and joints between reinforcing bars and other steel components.
• Materials and consumables: High‑level guidance on parent materials (reinforcing steels and other steels) and suitable welding consumables, plus associated inspection documentation.
• Quality and inspection: Quality requirements, acceptance criteria and recommended examination and testing methods, including tensile and shear testing of test specimens.
• Personnel and qualification: Requirements for welding coordination, welder and operator qualifications, validity of qualification tests and the scope (range) of qualification.
• Welding procedure specification (WPS) and procedures: Content for WPS, procedure qualification testing, production weld tests, execution and inspection in production welding.
• Production and testing: Guidance on production weld tests, execution of welding on bent bars, and specific considerations for different process groups; testing procedures and reporting requirements.

Practical applications

• Used as a technical reference for specifying and verifying load‑bearing welded joints in reinforced concrete elements (e.g., splices, connections to steel components).
• Guides development of WPSs, welder/operator qualification programs, production testing and inspection regimes.
• Supports contractors, structural fabricators, welding coordinators, inspection bodies and designers seeking consistent, verifiable welding practices for reinforcing steel.

Who should use it

• Structural and civil engineers specifying reinforcement connections
• Welding coordinators and quality managers in precast and in‑situ concrete construction
• Fabrication shops, welding contractors and contractors performing reinforcement welding
• Test laboratories and certification bodies evaluating welds and welder qualifications

Related information and status

• This document is a draft circulated for comment (ISO/DIS 17660-1:2017) and the CEN WI was abandoned in 2018. Users should verify the current status of ISO 17660 series documents and national standards before referencing them in contractual specifications. For up‑to‑date requirements, consult ISO/CEN publications or national standards bodies.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2017
Varjenje - Varjenje betonskega jekla - 1. del: Obremenjeni zvarni spoji (ISO/DIS
17660-1:2017)
Welding - Welding of reinforcing steel - Part 1: Load-bearing welded joints (ISO/DIS
17660-1:2017)
Schweißen - Schweißen von Betonstahl - Teil 1: Tragende Schweißverbindungen
(ISO/DIS 17660-1:2017)
Soudage - Soudage des aciers pour armature - Partie 1: Assemblages transmettant les
efforts (ISO/DIS 17660-1:2017)
Ta slovenski standard je istoveten z: prEN ISO 17660-1
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT INTERNATIONAL STANDARD
ISO/DIS 17660-1
ISO/TC 44/SC 10 Secretariat: DIN
Voting begins on: Voting terminates on:
2017-08-28 2017-11-19
Welding — Welding of reinforcing steel —
Part 1:
Load-bearing welded joints
Soudage — Soudage des aciers d’armatures —
Partie 1: Assemblages transmettant des efforts
ICS: 25.160.10
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 17660-1:2017(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2017

ISO/DIS 17660-1:2017(E) ISO/DIS 17660-1:2017(E)

Contents Page
Foreword . vi
Introduction . vii
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Symbols and abbreviated terms .3
5 Welding processes .4
6 Load-bearing welded joints .4
6.1 General .4
6.2 Butt joints .5
6.2.1 Butt joints welded by welding processes 111, 114, 135, 136 and 138 .5
6.2.2 Butt joints welded by welding processes 24, 25 and 42 .6
6.2.3 Butt joints welded by welding process 47 .6
6.3 Lap joints .7
6.4 Strap joints .7
6.5 Cross joints .8
6.5.1 General .8
6.5.2 Cross joints for welding processes 111, 114, 135, 136, 138 .8
6.5.3 Cross joints for welding processes 21 and 23 .9
6.6 Joints between reinforcing steel bars and other steel components . 10
6.6.1 General . 10
6.6.2 Types of joint . 10
7 Materials . 15
7.1 Parent materials . 15
7.1.1 Reinforcing steels . 15
7.1.2 Other types of steels . 15
7.1.3 Inspection documents . 15
7.2 Welding consumables . 15
8 Quality requirements . 15
9 Welding personnel . 16
9.1 Welding coordination . 16
9.2 Welder and operator qualifications. 16
9.2.1 Welders . 16
9.2.2 Welding operators and resistance weld setters . 17
9.3 Validity of a welder qualification test . 17
© ISO 2017, Published in Switzerland
10 Welding procedure specification (WPS) . 17
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
11 Welding procedures . 17
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester. 11.1 General . 17
11.2 Test specimens . 17
ISO copyright office
Ch. de Blandonnet 8 • CP 401
11.3 Examination and testing . 17
CH-1214 Vernier, Geneva, Switzerland
11.4 Acceptance criteria . 18
Tel. [phone]
11.5 Range of qualification . 18
Fax [phone]
[e-mail]
www.iso.org
iii
ii © ISO 2017 – All rights reserved

ISO/DIS 17660-1:2017(E)
Contents Page
Foreword . vi
Introduction . vii
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Symbols and abbreviated terms .3
5 Welding processes .4
6 Load-bearing welded joints .4
6.1 General .4
6.2 Butt joints .5
6.2.1 Butt joints welded by welding processes 111, 114, 135, 136 and 138 .5
6.2.2 Butt joints welded by welding processes 24, 25 and 42 .6
6.2.3 Butt joints welded by welding process 47 .6
6.3 Lap joints .7
6.4 Strap joints .7
6.5 Cross joints .8
6.5.1 General .8
6.5.2 Cross joints for welding processes 111, 114, 135, 136, 138 .8
6.5.3 Cross joints for welding processes 21 and 23 .9
6.6 Joints between reinforcing steel bars and other steel components . 10
6.6.1 General . 10
6.6.2 Types of joint . 10
7 Materials . 15
7.1 Parent materials . 15
7.1.1 Reinforcing steels . 15
7.1.2 Other types of steels . 15
7.1.3 Inspection documents . 15
7.2 Welding consumables . 15
8 Quality requirements . 15
9 Welding personnel . 16
9.1 Welding coordination . 16
9.2 Welder and operator qualifications. 16
9.2.1 Welders . 16
9.2.2 Welding operators and resistance weld setters . 17
9.3 Validity of a welder qualification test . 17
10 Welding procedure specification (WPS) . 17
11 Welding procedures . 17
11.1 General . 17
11.2 Test specimens . 17
11.3 Examination and testing . 17
11.4 Acceptance criteria . 18
11.5 Range of qualification . 18
iii
ISO/DIS 17660-1:2017(E)
11.5.1 Material . 18
11.5.2 Load-bearing/Non load-bearing . 18
11.5.3 Production route of reinforcing steel . 18
11.5.4 Diameter of reinforcing steel bar and material thickness . 18
11.5.5 Transverse end plate joints . 19
11.5.6 Other essential variables . 19
11.6 Validity . 20
12 Production weld test . 20
13 Execution and inspection of production welding of reinforcing steel . 21
13.1 General . 21
13.2 Welding of bent reinforcing steel bars . 22
13.3 Welds made by welding processes 21 and 23 . 23
13.4 Welds made by welding processes 24 and 25 . 23
13.5 Welds made by welding process 42 . 23
13.6 Welds made by welding process 47 . 23
14 Examination and testing of test specimens . 24
14.1 General . 24
14.2 Tensile test . 24
14.2.1 Test specimen . 24
14.2.2 Test procedure . 24
14.2.3 Evaluation of results . 24
14.2.4 Report of results . 25
14.3 Shear test . 25
14.3.1 Test specimen . 25
14.3.2 Test procedure . 25
14.3.3 Evaluation of results . 25
14.3.4 Report of results . 26
14.4 Bend test . 26
14.4.1 Test specimen . 26
14.4.2 Test procedure . 27
14.4.3 Evaluation of results . 27
14.4.4 Reporting of results . 27
15 Production log . 27
Annex A (informative) Welding procedure specification (WPS) . 28
A.1 Welding processes 111, 114, 135, 136 and 138 . 28
A.2 Welding process 47 . 30
Annex B (informative) Technical knowledge of welding coordinator for welding reinforcing
steel . 31
Annex C (informative) Test specimens . 32
C.1 General . 32
C.2 Test specimens . 32
Annex D (informative) Assessment of the manufacturer performing welding . 36
Annex E (informative) Evaluation of testing of welded joints . 37
Annex F (informative) Example for production log . 38
Annex G (informative) Classification of shear strenght of load-bearing cross joints . 39
Annex H (informative) Examples of diameter combiantions for welding cross joints using
welding processes 21 and 23 . 40
iv
ISO/DIS 17660-1:2017(E) ISO/DIS 17660-1:2017(E)
11.5.1 Material . 18
Bibliography . 41
11.5.2 Load-bearing/Non load-bearing . 18

11.5.3 Production route of reinforcing steel . 18

11.5.4 Diameter of reinforcing steel bar and material thickness . 18
11.5.5 Transverse end plate joints . 19
11.5.6 Other essential variables . 19
11.6 Validity . 20
12 Production weld test . 20
13 Execution and inspection of production welding of reinforcing steel . 21
13.1 General . 21
13.2 Welding of bent reinforcing steel bars . 22
13.3 Welds made by welding processes 21 and 23 . 23
13.4 Welds made by welding processes 24 and 25 . 23
13.5 Welds made by welding process 42 . 23
13.6 Welds made by welding process 47 . 23
14 Examination and testing of test specimens . 24
14.1 General . 24
14.2 Tensile test . 24
14.2.1 Test specimen . 24
14.2.2 Test procedure . 24
14.2.3 Evaluation of results . 24
14.2.4 Report of results . 25
14.3 Shear test . 25
14.3.1 Test specimen . 25
14.3.2 Test procedure . 25
14.3.3 Evaluation of results . 25
14.3.4 Report of results . 26
14.4 Bend test . 26
14.4.1 Test specimen . 26
14.4.2 Test procedure . 27
14.4.3 Evaluation of results . 27
14.4.4 Reporting of results . 27
15 Production log . 27
Annex A (informative) Welding procedure specification (WPS) . 28
A.1 Welding processes 111, 114, 135, 136 and 138 . 28
A.2 Welding process 47 . 30
Annex B (informative) Technical knowledge of welding coordinator for welding reinforcing
steel . 31
Annex C (informative) Test specimens . 32
C.1 General . 32
C.2 Test specimens . 32
Annex D (informative) Assessment of the manufacturer performing welding . 36
Annex E (informative) Evaluation of testing of welded joints . 37
Annex F (informative) Example for production log . 38
Annex G (informative) Classification of shear strenght of load-bearing cross joints . 39
Annex H (informative) Examples of diameter combiantions for welding cross joints using
welding processes 21 and 23 . 40
iv v
ISO/DIS 17660-1:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national
standards bodies (ISO member bodies). The work of preparing International Standards is normally
carried out through ISO technical committees. Each member body interested in a subject for which a
technical committee has been established has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with ISO, also take part in
the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO's adherence to the World Trade Organization (WTO)
principles in the Technical Barriers to Trade (TBT) see the following URL:
www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/44/SC 10 "Quality management in the field of
welding".
This second edition cancels and replaces the first edition (ISO 17660-1:2006), clause 6.2, clause 6.4,
annex A, annex B and annex C of which have been technically revised.
ISO 17660 consists of the following parts, under the general title Welding — Welding of reinforcing steel:
— Part 1: Load-bearing welded joints
— Part 2: Non load-bearing welded joints
Requests for official interpretations of any aspect of this part of ISO 17660 should be directed to the
Secretariat of ISO/TC 44/SC 10 via your national standards body. A complete listing of these bodies can
be found at www.iso.org.
vi
ISO/DIS 17660-1:2017(E) ISO/DIS 17660-1:2017(E)
Foreword
Introduction
ISO (the International Organization for Standardization) is a worldwide federation of national
Reinforcing steel bars are produced by a number of process routes and usually have a ribbed profile.
standards bodies (ISO member bodies). The work of preparing International Standards is normally
Taking these issues into account, it is apparent that both the welder and the welding coordinator
carried out through ISO technical committees. Each member body interested in a subject for which a
require a specific level of skill and job knowledge and that special procedures for quality assurance
technical committee has been established has the right to be represented on that committee.
need to be adopted.
International organizations, governmental and non-governmental, in liaison with ISO, also take part in
the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO's adherence to the World Trade Organization (WTO)
principles in the Technical Barriers to Trade (TBT) see the following URL:
www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/44/SC 10 "Quality management in the field of
welding".
This second edition cancels and replaces the first edition (ISO 17660-1:2006), clause 6.2, clause 6.4,
annex A, annex B and annex C of which have been technically revised.
ISO 17660 consists of the following parts, under the general title Welding — Welding of reinforcing steel:
— Part 1: Load-bearing welded joints
— Part 2: Non load-bearing welded joints
Requests for official interpretations of any aspect of this part of ISO 17660 should be directed to the
Secretariat of ISO/TC 44/SC 10 via your national standards body. A complete listing of these bodies can
be found at www.iso.org.
vi vii
DRAFT INTERNATIONAL STANDARD
Welding — Welding of reinforcing steel — Part 1: Load-
bearing welded joints
1 Scope
This part of ISO 17660 is applicable to the welding of weldable reinforcing steel and stainless
reinforcing steel of load-bearing joints, in workshops or on site. It specifies requirements for materials,
design and execution of welded joints, welding personnel, quality requirements, examination and
testing.
This part of ISO 17660 also covers welded joints between reinforcing steel bars and other steel
components, such as connection devices and insertion anchors, including prefabricated assemblies. Non
load-bearing joints are covered by ISO 17660-2.
This part of ISO 17660 is not applicable to factory production of welding fabric and lattice girders using
multiple spot welding machines or multiple projection welding machines.
The requirements of this part of ISO 17660 are only applicable to static loaded structures.
NOTE For fatigue-loaded structures, depending on type of joint and welding process, it is recommended that
an appropriate reduction be taken into account on the fatigue strength of the reinforcing steel.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 3834-3 Quality requirements for fusion welding of metallic materials — Part 3: Standard quality
requirements
ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers
ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding
excluded) — Quality levels for imperfections
ISO 9606-1, Qualification testing of welders — Fusion welding — Part 1: Steels
ISO 14731, Welding coordination — Tasks and responsibilities
ISO 14732, Welding personnel — Qualification testing of welding operators and weld setters for
mechanized and automatic welding of metallic materials
ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 1: Arc welding
ISO 15609-2, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 2: Gas welding
ISO/DIS 17660-1:2017(E)
ISO 15609-5, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 5: Resistance welding
ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
ISO 15614-12, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 12: Spot, seam and projection welding
ISO 15614-13, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 13: Upset (resistance butt) and flash welding
ISO 15620, Welding — Friction welding of metallic materials
ISO 15630-1, Steel for the reinforcement and prestressing of concrete — Test methods — Part 1:
Reinforcing bars, wire rod and wire
ISO 15630-2, Steel for the reinforcement and prestressing of concrete — Test methods — Part 2: Welded
fabric
ISO 16020, Steel for the reinforcement and prestressing of concrete — Vocabulary
EN 10079, Definition of steel products
EN 10080, Steel for the reinforcement of concrete — Weldable reinforcing steel — General
EN 10164, Steel products with improved deformation properties perpendicular to the surface of the
product — Technical delivery conditions
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10079, EN 10080 and
ISO 16020 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
load-bearing welded joint
welded joint used for transmission of specified loads between reinforcing steel bars or between
reinforcing steel bars and other steel products
3.2
non load-bearing welded joint
welded joint whose strength is not taken into account in the design of the reinforced concrete structure
NOTE The purpose of a non load-bearing welded joint is usually only to keep the reinforcing components in
their correct places during fabrication, transport and concreting. The weld is often called tack weld.
3.3
shear factor
S
f
relation between the shear force of a cross joint and the nominal yield strength R , multiplied by the
e
nominal cross section area A of the loaded bar
s
ISO/DIS 17660-1:2017(E) ISO/DIS 17660-1:2017(E)
ISO 15609-5, Specification and qualification of welding procedures for metallic materials — Welding
3.4
procedure specification — Part 5: Resistance welding
manufacturer
enterprise carrying out the welding works within workshops or on site
ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys

ISO 15614-12, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 12: Spot, seam and projection welding
4 Symbols and abbreviated terms
ISO 15614-13, Specification and qualification of welding procedures for metallic materials — Welding
a throat thickness
procedure test — Part 13: Upset (resistance butt) and flash welding
A percentage total elongation at maximum force
gt
ISO 15620, Welding — Friction welding of metallic materials
A nominal cross-sectional area of the bar
n
ISO 15630-1, Steel for the reinforcement and prestressing of concrete — Test methods — Part 1:
Reinforcing bars, wire rod and wire
A nominal cross-sectional area of the bar to be anchored
s
ISO 15630-2, Steel for the reinforcement and prestressing of concrete — Test methods — Part 2: Welded
b excess of the bar
fabric
d nominal diameter of the welded bar
ISO 16020, Steel for the reinforcement and prestressing of concrete — Vocabulary
d maximum nominal diameter of the welded bar
max
EN 10079, Definition of steel products
d minimum nominal diameter of the welded bar
min
EN 10080, Steel for the reinforcement of concrete — Weldable reinforcing steel — General
e distance between the bars
EN 10164, Steel products with improved deformation properties perpendicular to the surface of the
product — Technical delivery conditions
F force to be anchored by transverse bar
F maximum tensile force
3 Terms and definitions
max
F shear force
s
For the purposes of this document, the terms and definitions given in EN 10079, EN 10080 and
ISO 16020 and the following apply.
l length of the weld (cross joint)

ISO and IEC maintain terminological databases for use in standardization at the following addresses: l overall lap length
o
L minimum length of the test specimen
— IEC Electropedia: available at http://www.electropedia.org/ min
r radius of bent reinforcing steel bar
— ISO Online browsing platform: available at http://www.iso.org/obp
R specified cha
...