SIST EN ISO 17660-1:2007
(Main)Welding - Welding of reinforcing steel - Part 1: Load-bearing welded joints (ISO 17660-1:2006)
Welding - Welding of reinforcing steel - Part 1: Load-bearing welded joints (ISO 17660-1:2006)
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 insert 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.
Schweißen - Schweißen von Betonstahl - Teil 1: Tragende Schweißverbindungen (ISO 17660-1:2006)
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, Qualitätsanforderungen, Untersuchung und Prüfung fest.
Dieser Teil von ISO 17660 enthält auch Verbindungen zwischen Betonstahlstäben und anderen Stahlteilen, wie Verbindungseinheiten, Verankerungen, einschließlich vorgefertigter Einbauteile. Nichttragende Schwei߬verbindungen werden durch ISO 17660-2 erfasst.
Dieser Teil von ISO 17660 gilt nicht für die fabrikmäßige Herstellung von Betonstahlmatten und Gitterträgern 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 Schwei߬prozesses, eine merkliche Verminderung der dynamischen Festigkeit des Betonstahls zu berücksichtigen.
Soudage - Soudage des aciers d'armatures - Partie 1: Assemblages transmettant des efforts (ISO 17660-1:2006)
L'ISO 17660-1:2006 est applicable au soudage, en atelier et sur chantier, des aciers soudables pour armatures et des aciers inoxydables pour armatures des assemblages transmettant des efforts. Elle spécifie les exigences relatives aux matériaux, à la conception et à l'exécution des assemblages soudés, au personnel de soudage, aux exigences de qualité, aux examens, contrôles et essais.
L'ISO 17660-1:2006 couvre également les assemblages soudés entre les barres en acier pour armatures et d'autres éléments en acier, tels que les raccords et les ancrages encastrés, y compris les assemblages préfabriqués. Les assemblages non transmettants sont couverts par l'ISO 17660-2.
L'ISO 17660-1:2006 n'est pas applicable à la production en usine pour souder les armatures en treillis soudés et les poutres en treillis sur machines multipoints ou sur machines de soudage par bossages multiples.
Les exigences de l'ISO 17660-1:2006 ne sont applicables qu'aux structures soumises à des charges statiques.
Varjenje - Varjenje betonskega jekla - 1. del: Obremenjeni zvarni spoji (ISO 17660-1:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 17660-1:2007
01-marec-2007
Varjenje - Varjenje betonskega jekla - 1. del: Obremenjeni zvarni spoji (ISO 17660-
1:2006)
Welding - Welding of reinforcing steel - Part 1: Load-bearing welded joints (ISO 17660-
1:2006)
Schweißen - Schweißen von Betonstahl - Teil 1: Tragende Schweißverbindungen (ISO
17660-1:2006)
Soudage - Soudage des aciers d'armatures - Partie 1: Assemblages transmettant des
efforts (ISO 17660-1:2006)
Ta slovenski standard je istoveten z: EN ISO 17660-1:2006
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
SIST EN ISO 17660-1:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN ISO 17660-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2006
ICS 25.160.10
English Version
Welding - Welding of reinforcing steel - Part 1: Load-bearing
welded joints (ISO 17660-1:2006)
Soudage - Soudage des aciers d'armatures - Partie 1: Schweißen - Schweißen von Betonstahl - Teil 1: Tragende
Assemblages transmettant des efforts (ISO 17660-1:2006) Schweißverbindungen (ISO 17660-1:2006)
This European Standard was approved by CEN on 2 August 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17660-1:2006: E
worldwide for CEN national Members.
---------------------- Page: 2 ----------------------
EN ISO 17660-1:2006 (E)
Foreword
This document (EN ISO 17660-1:2006) has been prepared by Technical Committee CEN/TC
121 "Welding", the secretariat of which is held by DIN, in collaboration with Technical Committee
ISO/TC 44 "Welding and allied processes".
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by March 2007, and conflicting national
standards shall be withdrawn at the latest by March 2007.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
2
---------------------- Page: 3 ----------------------
INTERNATIONAL ISO
STANDARD 17660-1
First edition
2006-09-01
Welding — Welding of reinforcing steel —
Part 1:
Load-bearing welded joints
Soudage — Soudage des aciers d'armatures —
Partie 1: Assemblages transmettant des efforts
Reference number
ISO 17660-1:2006(E)
©
ISO 2006
---------------------- Page: 4 ----------------------
ISO 17660-1:2006(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2006
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2006 – All rights reserved
---------------------- Page: 5 ----------------------
ISO 17660-1:2006(E)
Contents Page
Foreword. iv
Introduction . v
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
7 Materials . 14
8 Quality requirements. 14
9 Welding personnel. 15
10 Welding procedure specification (WPS).16
11 Welding procedures . 16
12 Production weld test. 18
13 Execution and inspection of production welding of reinforcing steel. 19
14 Examination and testing of test specimens. 21
15 Production log. 24
Annex A (informative) Welding procedure specification (WPS) for welding processes 111, 114,
135 and 136. 25
Annex B (informative) Technical knowledge of welding coordinator for welding reinforcing steel . 27
Annex C (informative) Test specimens . 28
Annex D (informative) Assessment of the manufacturer performing welding . 32
Annex E (informative) Evaluation of testing of welded joints. 33
Annex F (informative) Example for production log. 34
Annex G (informative) Classification of shear strength of load-bearing cross joints. 35
Annex H (informative) Examples of diameter combinations for welding cross joints using welding
processes 21 and 23. 36
Bibliography . 37
© ISO 2006 – All rights reserved iii
---------------------- Page: 6 ----------------------
ISO 17660-1:2006(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 17660-1 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 121, Welding, in collaboration with Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 10, Unification of requirements in the field of metal welding, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
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.
iv © ISO 2006 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 17660-1:2006(E)
Introduction
Reinforcing steel bars are produced by a number of process routes and usually have a ribbed profile. Taking
these issues into account, it is apparent that both the welder and the welding coordinator require a specific
level of skill and job knowledge and that special procedures for quality assurance need to be adopted.
© ISO 2006 – All rights reserved v
---------------------- Page: 8 ----------------------
INTERNATIONAL STANDARD ISO 17660-1:2006(E)
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 insert 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 referenced documents are indispensable for the application of this document. 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 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding
excluded) — Quality levels for imperfections
ISO 9606-1, Approval testing of welders — Fusion welding — Part 1: Steels
1)
ISO 14731:— , Welding coordination — Tasks and responsibilities
2)
ISO 14732 , Welding personnel — Approval testing of welding operators for fusion welding and of resistance
weld setters for fully 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
1) To be published (revision of ISO 14731:1997, EN 719:1994).
2) Equivalent to EN 1418.
© ISO 2006 – All rights reserved 1
---------------------- Page: 9 ----------------------
ISO 17660-1:2006(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: 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.
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 nominal
e
cross section area A of the loaded bar
s
3.4
manufacturer
enterprise carrying out the welding works within workshops or on site
2 © ISO 2006 – All rights reserved
---------------------- Page: 10 ----------------------
ISO 17660-1:2006(E)
4 Symbols and abbreviated terms
a throat thickness
A percentage total elongation at maximum force
gt
A nominal cross-sectional area of the bar
n
A nominal cross-sectional area of the bar to be anchored
s
b excess of the bar
d nominal diameter of the welded bar
d maximum nominal diameter of the welded bar
max
d minimum nominal diameter of the welded bar
min
e distance between the bars
F force to be anchored by transverse bar
F maximum tensile force
max
F shear force
s
l length of the weld (cross joint)
l overall lap length
o
L minimum length of the test specimen
min
r radius of bent reinforcing steel bar
R specified characteristic yield strength of the reinforcing steel
e
R nominal tensile strength of the reinforcing steel
m
S shear factor
f
t thickness of the web of a section or of a plate to be welded
t minimum thickness of the web of a section or of a plate to be welded
min
w weld width
x root gap
y depth of root face
α included angle
BW butt weld
CEV carbon equivalent value
FW fillet weld
SF Shear factor class
WPQR welding procedure qualification record
WPS welding procedure specification
© ISO 2006 – All rights reserved 3
---------------------- Page: 11 ----------------------
ISO 17660-1:2006(E)
5 Welding processes
The following welding processes in accordance with ISO 4063 may be used (see Table 1):
Table 1 — List of welding processes and reference numbers in accordance with ISO 4063
Welding process English term American term
manual metal arc welding
111 shielded metal arc welding
(metal arc welding with covered electrode)
114 self-shielded tubular cored arc welding
135 metal active gas welding (MAG-welding) gas metal arc welding
tubular cored metal arc welding
136 flux cored arc welding
with active gas shield
21 resistance spot welding
23 projection welding
24 flash welding
25 resistance butt welding
42 friction welding
47 oxy-fuel gas pressure welding pressure gas welding
The principles of this part of ISO 17660 may be applied to other welding processes.
6 Load-bearing welded joints
6.1 General
A summary of common ranges of bar diameters for welded joints, depending on the welding process, is given
in Table 2.
Table 2 — Common ranges of bar diameters for welded joints
Range of bar diameters for load-bearing welded joint
Welding processes Type of welded joint
mm
21
a
cross joint 4 to 20
23
24 5 to 50
butt joint
25 5 to 25
butt joint 6 to 50
42
joint to other steel component 6 to 50
47 butt joint 6 to 50
butt joint without backing W 16
111 butt joint with permanent backing W 12
114 lap joint 6 to 32
135
strap joint 6 to 50
a
136
cross joint 6 to 50
joint to other steel components 6 to 50
a
d /d should be W 0,4.
min max
4 © ISO 2006 – All rights reserved
---------------------- Page: 12 ----------------------
ISO 17660-1:2006(E)
The joints specified in 6.2, 6.3, 6.4 and 6.6 are designed to give full load-bearing capacity of the bar.
Exceptions are possible for butt welds and joints between reinforcing steel bars and other steel components,
and shall be specified. For cross joints, the shear strength shall be specified in the design (see also Annex G).
The welded joint shall meet the strength and ductility requirements of the specific reinforcing steel, unless
such requirements are deemed to be irrelevant for the functions of the welded product.
The joints specified below are examples of good practice. Other joint configurations may be used if they can
be shown to meet the requirements of Clause 11.
6.2 Butt joints
6.2.1 Butt joints welded by welding processes 111, 114, 135 and 136
Examples of butt joint preparation for load-bearing welded joints are given in Figures 1a) to 1d). Other joint
preparations or types of permanent backing may also be used.
The prepared joint shall be bevelled. The joint preparation should be carried out by grinding or flame cutting.
a) Double V butt weld b) Single V butt weld
c) Double bevel butt weld d) Single V butt weld with backing
Key
x root gap
y depth of root face
NOTE x and y depend on the welding process.
Figure 1 — Examples for preparation of butt joints
6.2.2 Butt joints welded by welding processes 24, 25, 42 and 47
For welding processes 24, 25 and 47, the misalignment of the bars shall not exceed 1 mm for the nominal bar
diameters u 10 mm, and 10 % of the nominal bar diameter for the other values.
© ISO 2006 – All rights reserved 5
---------------------- Page: 13 ----------------------
ISO 17660-1:2006(E)
For welding processes 24, 25 and 47, only bars with the same diameter shall be welded together.
For welding process 42, the maximum misalignment of the bars shall be specified.
6.3 Lap joints
Lap joints using single-sided intermittent lap welds (asymmetric force flow) shall be welded in accordance with
Figure 2.
Key
1 weld
a throat thickness
d nominal diameter of the thinner of the two welded bars
l overall lap length
o
w weld width
NOTE Welding is also possible on both sides with minimum weld length of 2,5 d. A conservative estimate of the
effective throat thickness can be taken as a ≈ 0,5 w.
Figure 2 — Lap joint
6.4 Strap joints
Strap joints with single-sided lap welds shall be welded in accordance with Figure 3.
Where the straps and the bars have the same mechanical properties, the combined cross-sectional area of
the two straps shall be equal to or greater than the cross-sectional area of the bars to be joined. Where the
straps and the bars do not have the same mechanical properties, the cross-sectional area of the straps shall
be adapted on the basis of the ratio of their individual nominal yield stresses.
6 © ISO 2006 – All rights reserved
---------------------- Page: 14 ----------------------
ISO 17660-1:2006(E)
Key
1 weld
a throat thickness
d nominal diameter of the thinner of the two welded bars
w weld width
NOTE Welding is also possible on both sides with minimum weld length of 2,5 d. A conservative estimate of the
effective throat thickness can be taken as a ≈ 0,4 w.
Figure 3 — Strap joint
6.5 Cross joints
6.5.1 General
The required shear factor (S) of the cross joint should be specified on the drawings (for shear factor
f
classification, see Annex G) and shall be verified by testing in accordance with Clause 14.
6.5.2 Cross joints for welding processes 111, 114, 135 and 136
Cross joints shall be welded in accordance with Figure 4. The joint shall be welded, whenever possible, from
at least two sides with two equal welds (see Figure 4a).
If only one single-sided weld is used, the shear strength of the welded joint shall be verified with the force
applied as shown in Figure 4b.
To avoid cracks in the weld, the following conditions shall be fulfilled:
⎯ a minimum throat thickness a W 0,3 d ;
min
⎯ a minimum length of the weld l W 0,5 d .
min
If more than one transverse bar is used on the same side of the longitudinal bar, the spacing of the transverse
bars shall be at least three times the nominal diameter of the transverse bar.
© ISO 2006 – All rights reserved 7
---------------------- Page: 15 ----------------------
ISO 17660-1:2006(E)
a) Double-sided weld
b) Single-sided weld
Key
1 longitudinal bar
2 transverse bar
F force to be anchored by transverse bar
Figure 4 — Cross joint welded by welding processes 111, 114, 135 or 136
6.5.3 Cross joints for welding processes 21 and 23
Cross joints made by welding processes 21 and 23 shall be welded in accordance with Figure 5.
Figure 5 — Cross joints welded by welding processes 21 and 23
8 © ISO 2006 – All rights reserved
---------------------- Page: 16 ----------------------
ISO 17660-1:2006(E)
6.6 Joints between reinforcing steel bars and other steel components
6.6.1 General
The material thicknesses of the steel components given in Figures 6 to 9 are prescribed on the basis of
welding criteria. Greater material thicknesses may be required as a result of detailed structural analysis.
If the weld length or material thickness of the steel components vary from the values prescribed in Figures 6, 7,
8 and 9, then the alternative dimensions shall be proven by data provided from actual tests.
The details of such tests shall be specified and documented.
The choice of material, calculation and design of the steel component shall be made in accordance with
relevant design specifications.
Welded joints between reinforcing steel in accordance with 7.1.1 and stainless steels or fine grain structural
steels are permitted.
6.6.2 Types of joint
6.6.2.1 Side lap weld joints
The load-bearing welded joints made by side lap welds are shown in Figures 6 and 7. The joints welded by
single-sided lap welds shall be welded in accordance with the dimensions for the lap joint (see 6.3) and the
joints welded by double-sided lap welds shall be welded in accordance with the dimensions for the strap joint
(see 6.4).
© ISO 2006 – All rights reserved 9
---------------------- Page: 17 ----------------------
ISO 17660-1:2006(E)
0,4 d u t , but t = 4 mm
min
a) Side lap joint, single-sided welded
0,4 d u t , but t = 4 mm
min
b) Side lap joint, double-sided welded
Key
1 weld
d nominal diameter of the welded bars
e distance between the bars
t thickness of the web of a section or of a plate to be welded
t minimum thickness of the web of a section or of a plate to be welded
min
Figure 6 — Side lap joint on straight reinforcing steel bars
10 © ISO 2006 – All rights reserved
---------------------- Page: 18 ----------------------
ISO 17660-1:2006(E)
0,4 d u t, but min t = 4 mm
Key
1 weld
d nominal diameter of the welded bar
t thickness of the web of a section or of a plate to be welded
Figure 7 — Sided lap joints on bent reinforcing steel bar
For the thickness of the steel components, the weld length and the weld spacing, the dimensions of Figures 6
and 7 shall be observed.
For welding double-sided laps on bent reinforcing steel bars in accordance with Figure 7, the requirements of
13.2 also apply.
During assembly, sufficient access for welding shall be maintained.
Side lap welds shall be made as shown in Figure 8.
a ≈ 0,3 d, minimum 3 mm
Key
a throat thickness
w weld width
NOTE a ≈ 0,7 × w
Figure 8 — Weld configuration of side lap welds
6.6.2.2 Transverse end plate joints
Transverse end plate joints shall be welded in accordance with Figure 9.
© ISO 2006 – All rights reserved 11
---------------------- Page: 19 ----------------------
ISO 17660-1:2006(E)
Where several reinforcing steel bars are welded to a plate or section, the spacing between bars shall be at
least 3d.
NOTE This type of joint can be used for the purposes of end anchorage.
For joints made by fillet welds with set-on bar, as shown in Figure 9 c), the end of the reinforcing steel bar
shall be cut square to the bar axis. There should be no gap between the squared end of the reinforcing steel
bar and the steel component. Laminations and lamellar tearing in the steel plate shall be avoided by the
choice of a suitable parent material. The steel plate shall be controlled by testing or inspection, for example in
accordance with EN 10164.
12 © ISO 2006 – All rights reserved
---------------------- Page: 20 ----------------------
ISO 17660-1:2006(E)
a = 0,4 d
b W d
0,4 d u t, but t = 4 mm
min
a) Set-through bar
α W 45°
a = 0,4 d
t W d
b) Set-in bar
a = 0,4 d
0,4 d u t, but t = 4 mm
min
In case of a gap, the fillet weld size shall be increased by the dimension of the gap.
c) Set-on bar
Key
a throat thickness t plate thickness
b excess of the bar t minimum thickness of the web of a section or of a plate to be welded
min
d nominal diameter of the welded bar α included angle
Figure 9 — Transverse end plate joint
© ISO 2006 – All rights reserved 13
---------------------- Page: 21 ----------------------
ISO 17660-1:2006(E)
7 Materials
7.1 Parent materials
7.1.1 Reinforcing steels
Weldable reinforcing steel and stainless reinforcing steel, in accordance with the relevant standards or
technical specification, may be used. For refurbishment and extensions of buildings, the weldability of the
existing reinforcing steel shall be verified.
7.1.2 Other types of steels
Other types of steels (weldable structural or stainless steels) may be welded to reinforcing steel. The delivery
conditions of the steel shall be declared in the inspection certificate.
7.1.3 Inspection documents
For reinforcing steels, the inspection certificate does not need to be provided if the manufacturer of the
...
SLOVENSKI oSIST prEN ISO 17660-1:2005
PREDSTANDARD
marec 2005
Varjenje - Varjenje betonskega jekla - 1. del: Obremenjeni zvarni spoji
(ISO/DIS 17660-1:2004)
Welding - Welding of reinforcing steel - Part 1: Load bearing welded joints (ISO/DIS
17660-1:2004)
ICS 25.160.10 Referenčna številka
oSIST prEN ISO 17660-1:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
DRAFT
prEN ISO 17660-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2004
ICS
English version
Welding - Welding of reinforcing steel - Part 1: Load bearing
welded joints (ISO/DIS 17660-1:2004)
Soudage - Soudage des aciers pour armature - Partie 1:
Assemblages transmettants les efforts (ISO/DIS 17660-
1:2004)
This draft European Standard is submitted to CEN members for third parallel enquiry. It has been drawn up by the Technical Committee
CEN/TC 121.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 17660-1:2004: E
worldwide for CEN national Members.
---------------------- Page: 2 ----------------------
prEN ISO 17660-1:2004 (E)
Foreword
This document (prEN ISO 17660-1:2004) has been prepared by Technical Committee CEN/TC
121 "Welding", the secretariat of which is held by DIN, in collaboration with Technical Committee
ISO/TC 44 "Welding and allied processes".
This document is currently submitted to the third parallel Enquiry.
2
---------------------- Page: 3 ----------------------
DRAFT INTERNATIONAL STANDARD ISO/DIS 17660-1.3
ISO/TC 44/SC 10 Secretariat: DIN
Voting begins on: Voting terminates on:
2004-12-23 2005-03-23
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Welding — Welding of reinforcing steel —
Part 1:
Load bearing welded joints
Soudage — Soudage des aciers pour armature —
Partie 1: Assemblages transmettant les efforts
ICS 25.160.10
ISO/CEN PARALLEL ENQUIRY
This draft International Standard is a draft standard developed within the European Committee for
Standardization (CEN) and processed under the CEN-lead mode of collaboration as defined in the
Vienna Agreement. The document has been transmitted by CEN to ISO for circulation for ISO member
body voting in parallel with CEN enquiry. Comments received from ISO member bodies, including those
from non-CEN members, will be considered by the appropriate CEN technical body. Should this DIS be
accepted, a final draft, established on the basis of comments received, will be submitted to a parallel two-
month FDIS vote in ISO and formal vote in CEN.
In accordance with the provisions of Council Resolution 15/1993 this document is circulated in
the English language only.
Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué
en version anglaise seulement.
To expedite distribution, this document is circulated as received from the committee secretariat.
ISO Central Secretariat work of editing and text composition will be undertaken at publication
stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED 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 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 NATIONAL REGULATIONS.
© International Organization for Standardization, 2004
---------------------- Page: 4 ----------------------
ISO/DIS 17660-1.3
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall
not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the
unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted
under the applicable laws of the user's country, neither this ISO draft nor any extract from it may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, photocopying,
recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO's
member body in the country of the requester.
ISO copyright office
Case postale 56 CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
©
ii ISO 2004 – All rights reserved
---------------------- Page: 5 ----------------------
ISO/DIS 17660-1.3
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Symbols and abbreviated terms .3
5 Welding processes.3
6 Load bearing welded joints .4
7 Materials .13
8 Quality requirements.13
9 Welding personnel .13
10 Welding procedure specification (WPS) .15
11 Welding procedures .15
12 Production weld test .17
13 Execution and inspection of production welding of reinforcing steel.18
14 Examination and testing of test specimens .20
15 Production log .23
Annex A (informative) Technical knowledge of welding coordinator for welding reinforcing steel .24
Annex B (informative) Test specimens.25
Annex C (informative) Assessment of the manufacturer performing welding .29
Annex D (informative) Evaluation of testing of welded joints .30
Annex E (informative) Example for production log .31
Annex F (informative) Classification of shear strength of load bearing cross joints.32
Annex ZA (normative) Normative references to international publications with their relevant
European publications.33
Bibliography.35
Figures
Figure 1 — Examples for preparation of butt joints.5
Figure 2 — Lap joint .6
Figure 3 — Strap joint .6
Figure 4 — Cross joint welded by welding processes 111, 114, 135 or 136 .7
Figure 5 — Cross joints welded by welding processes 21 and 23.8
© ISO 2004 – All rights reserved iii
---------------------- Page: 6 ----------------------
ISO/DIS 17660-1.3
Figure 6 — Side lap joint on straight reinforcing steel bars . 9
Figure 7 — Sided lap joints on bent reinforcing steel bar. 10
Figure 8 — Weld configuration of side lap welds. 10
Figure 9 — Transverse end plate joint. 12
Figure 10 — Butt joints on bent reinforcing steel bars. 19
Figure 11 — Cross joints in bends. 19
Figure B.1 — Test specimen for butt joint for tensile and bend test . 25
Figure B.2 — Test specimen for lap joint for tensile test . 25
Figure B.3 — Test specimen for strap joint for tensile test. 25
Figure B.4 — Test specimen for cross joints (shear test). 26
Figure B.5 — Test specimen for cross joints (bend test and tensile test). 26
Figure B.6 — Test specimen for tensile test for other joints (single sided lap welds). 26
Figure B.7 — Test specimen for tensile test for other joints (double sided lap welds) . 27
Figure B.8 — Test specimen for tensile test for other joints (double sided lap welds on bent
reinforcing steel). 27
Figure B.9— Test specimen for tensile test for transverse end plate joints . 28
Figure F.1— Presentation of a cross joint in a drawing (example) . 32
Tables
Table 1 — List of welding processes and reference numbers in accordance with ISO 4063. 4
Table 2 — Recommended diameters for welded joints . 4
Table 3 — Number of test pieces and range of welder qualification. 14
Table 4 — Examination and testing . 15
Table 5 — Range of qualification of diameter of reinforcing steel bar and material thickness . 16
Table 6 — Appropriate standards for different welding processes . 17
Table 7 — Number of test pieces for the production weld test. 18
Table 8 — Mandrel diameters for bend test . 23
Table E.1— Necessary information, which should be given. 31
Table F.1— Shear strength classification of load bearing cross joints . 32
iv © ISO 2004 – All rights reserved
---------------------- Page: 7 ----------------------
ISO/DIS 17660-1.3
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 17660-1 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 10, Unification of requirements in the field of metal welding.
ISO 17660 consists of the following parts, under the general title Welding — Welding of reinforcing steel:
Part 1: Load bearing welded joints (ISO/DIS 17660-1:2004)
Part 2: Non-load bearing welded joints (ISO/DIS 17660-1:2004):
© ISO 2004 – All rights reserved v
---------------------- Page: 8 ----------------------
ISO/DIS 17660-1.3
Introduction
Reinforcing steel bars are produced by a number of process routes and usually have a ribbed profile. Taking
these issues into account it is apparent that both the welder and the welding coordinator require a specific
level of skill and job knowledge, as well as the need for the adoption of special procedures for quality
assurance.
Requests for official interpretations of any aspect of this International Standard should be directed to the
Secretariat of ISO/TC 44/SC 10 via your national standards body, a complete listing which can be found at
ww.iso.org.
vi © ISO 2004 – All rights reserved
---------------------- Page: 9 ----------------------
DRAFT INTERNATIONAL STANDARD ISO/DIS 17660-1.3
Welding — Welding of reinforcing steel —
Part 1:
Load bearing welded joints
1 Scope
This standard applies to the welding of weldable reinforcing steel and stainless reinforcing steel of load
bearing joints in work shops or on site. It also covers welded joints between reinforcing steel bars and other
steel components such as connection devices and insert anchors, including prefabricated assemblies. Non-
load bearing joints are covered by ISO 17660-2.
This standard does not apply to factory production of welding fabric and lattice girders using multiple spot
welding machines or multiple projection welding machines.
The requirements of this standard only apply for static loaded structures. This standard specifies requirements
for materials, design and execution of welded joints, welding personnel, quality requirements, examination and
testing.
NOTE For fatigue loaded structures depending on type of joint and welding process, some relevant reduction on the
fatigue-strength of the reinforcing steel should be taken into account.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 287-1:2004, Qualification test of welders — Fusion welding — Part 1: Steels (ISO 9606-1, Qualification
test of welders — Fusion welding — Part 1: Steels).
EN 10079, Definition of steel products.
prEN 10080-1, Steel for the reinforcement of concrete — Weldable reinforcing steel — Part 1: General
requirements.
EN 10164, Steel products with improved deformation properties perpendicular to the surface of the product —
Technical delivery conditions.
ISO 3834-3, Quality requirements for welding — 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 14731, Welding coordination — Tasks and responsibilities.
ISO 14732, Welding personnel — Approval testing of welding operators for fusion welding and resistance
weld setters for fully mechanized and automatic welding of metallic materials.
© ISO 2004 – All rights reserved 1
---------------------- Page: 10 ----------------------
ISO/DIS 17660-1.3
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 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: Resistance butt and flash-butt 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 and wires.
ISO 15630-2, Steel for the reinforcement and prestressing of concrete — Test methods — Part 2: Welded
fabric.
ISO/DIS 16020, Steel for the reinforcement and prestressing of concrete — Vocabulary.
ISO/DIS 17660-2, Welding — Welding of reinforcing steel — Non-load bearing welded joints.
NOTE A list of European Standards (EN) conforming to these International Standards (ISO) is given in Annex ZA.
3 Terms and definitions
For the purposes of this standard, the terms and definitions given in EN 10079, prEN 10080-1 and ISO/DIS
16020 and the following apply.
3.1
load bearing welded joints
used for transmission of specified loads between reinforcing steel bars and between reinforcing steel bars and
other steel products
3.2
non-load bearing welded joints
welded joints of which the strength is not taken into account in the design of the reinforced concrete structure
NOTE The purpose of these joints is usually only to keep the reinforcing components in their correct places during
fabrication, transport and concreting. These welds are often referred to as tack welds.
3.3
shear factor
S
f
relation between the shear force of a cross joint and the nominal yield strength (R ) times the nominal cross
e
section area (A ) of the loaded bar
s
3.4
manufacturer
enterprise carrying out the welding works within workshops or on site
2 © ISO 2004 – All rights reserved
---------------------- Page: 11 ----------------------
ISO/DIS 17660-1.3
4 Symbols and abbreviated terms
A nominal cross-sectional area of the bar
n
A Percentage total elongation at maximum force
gt
A nominal cross-sectional area of the bar to be anchored
s
a throat thickness
d nominal diameter of the welded bar
d nominal diameter of the welded bar (biggest size)
max
d nominal diameter of the welded bar (smallest size)
min
e excess of the bar
F force to be anchored by transverse bar
F maximum tensile force
m
F shear force
s
l length of the weld (cross joint)
l overall lap length
0
L length of test specimen
R specified characteristic yield strength of the reinforcing steel
e
R nominal tensile strength of the reinforcing steel
m
S shear factor
f
t thickness of the web of a section or of a plate to be welded
w weld width
x root gap
y depth of root face
α included angle
BW butt weld
CEV carbon equivalent value
FW fillet weld
SF Shear factor class
WPQR welding procedure qualification record
WPS welding procedure specification
5 Welding processes
The following welding processes in accordance with ISO 4063 may be used (see table 1):
© ISO 2004 – All rights reserved 3
---------------------- Page: 12 ----------------------
ISO/DIS 17660-1.3
Table 1 — List of welding processes and reference numbers in accordance with ISO 4063
Welding process – English term American term
reference number
manual metal arc welding
111 shielded metal arc welding
(metal arc welding with covered electrode)
114 self-shielded tubular-cored arc welding
135 metal active gas welding (MAG-welding) gas metal arc welding
tubular cored metal arc welding with active
136 flux cored arc welding
gas shield
21 resistance spot welding
23 projection welding
24 flash welding
25 resistance butt welding
42 friction welding
47 oxy-fuel gas pressure welding pressure gas welding
Other welding processes by agreement.
6 Load bearing welded joints
6.1 General
A summary of recommended diameters for welded joints depending on the welding process is given in table 2.
Table 2 — Recommended diameters for welded joints
Welding Type of welded joint Range of bar diameter for
processes/number load bearing welded joint
21
cross joint 4 mm to 20 mm
23
24 6 mm to 50 mm
butt joint
25 6 mm to 25 mm
butt joint 6 mm to 50 mm
42
joint to other steel component 6 mm to 50 mm
47 butt joint 6 mm to 50 mm
butt joint without backing
≥ 16 mm
butt joint with permanent backing ≥ 12 mm
111
114
lap joint 6 mm to 32 mm
135
strap joint 6 mm to 50 mm
136
cross joint 6 mm to 50 mm
joint to other steel components 6 mm to 50 mm
The joints specified below are designed to give full load-bearing capacity. Exceptions are possible for butt
welds and joints between reinforcing steel bars and other steel components and shall be specified. For cross
joints, the shear strength shall be specified in the design (see also annex F).
4 © ISO 2004 – All rights reserved
---------------------- Page: 13 ----------------------
ISO/DIS 17660-1.3
The welded joint shall meet the strength and ductility requirements of the specific reinforcing steel unless such
requirements are deemed to be irrelevant for the functions of the welded product.
The joints specified below are examples of good practice. Other joint configurations may be used if they can
be shown to meet the requirements of clause 11.
6.2 Butt joints
6.2.1 Butt joints welded by welding processes 111, 114, 135 and 136
Examples of butt joint preparation for load-bearing welded joints are given in Figures 1a) to 1d). Other joint
preparations or types of permanent backing may also be used.
The prepared joint shall be bevelled. The joint preparation should be prepared by grinding or flame cutting.
a) Double V butt weld
b) Single V butt weld
c) Double bevel butt weld
d) Single V butt weld with backing
NOTE x and y depend on the welding process.
Figure 1 — Examples for preparation of butt joints
6.2.2 Butt joints welded by welding processes 24, 25, 42 and 47
The misalignment of the bars shall not exceed 1 mm for the nominal bar diameters ≤ 10 mm and 10 % of the
nominal bar diameter for the other values.
For welding processes 24, 25 and 47, only bars with the same diameter shall be welded together.
6.3 Lap joints
Lap joints using single sided intermittent lap welds (asymmetric force flow) shall be welded in accordance with
figure 2.
© ISO 2004 – All rights reserved 5
---------------------- Page: 14 ----------------------
ISO/DIS 17660-1.3
Key
1weld
d nominal diameter of the thinner of the two welded bars
l overall lap length
o
w weld width
NOTE Can also be welded on both sides with minimum weld length of 2,5 d. A conservative estimate of the effective
throat thickness may be taken as a ≈ 0,5 w.
Figure 2 — Lap joint
6.4 Strap joints
Strap joints with single sided lap welds shall be welded using single sided lap welds in accordance with
figure 3.
Where the straps and the bars have the same mechanical properties, the combined cross-sectional area of
the two straps shall be equal to or greater than the cross-sectional area of the bars to be joined. Where the
straps and the bars do not have the same mechanical properties, the cross-sectional area of the straps shall
be adapted on the basis of the ratio of their individual nominal yield stresses.
Key
1weld
d nominal diameter of the thinner of the two welded bars
NOTE Can also be welded on both sides with minimum weld length of 2,5 d. A conservative estimate of the effective
throat thickness may be taken as a ≈ 0,4 w.
Figure 3 — Strap joint
6 © ISO 2004 – All rights reserved
---------------------- Page: 15 ----------------------
ISO/DIS 17660-1.3
6.5 Cross joints
6.5.1 General
The required shear factor (S) of the cross joint should be specified on the drawings (for shear factor
f
classification see annex F) and shall be verified by testing in accordance with clause 14.
6.5.2 Cross joints for welding processes 111, 114, 135 and 136
Cross joints shall be welded in accordance with figure 4. The joint shall be welded, whenever possible, from at
least two sides with two equal welds (see figure 4a)).
If only one-sided weld is used, the verification of the shear strength of the welded joint shall be verified with
the force applied as shown in figure 4b).
To avoid cracks in the weld, the following conditions shall be fulfilled:
minimum throat thickness (a): ≥ 0,3 d ;
min
minimum length of the weld (l): ≥ 0,5 d .
min
If more than one transverse bar is used on the same side of the longitudinal bar, the spacing of the transverse
bars shall be at least three times the nominal diameter of the transverse bar.
a) Single sided weld
b) Double sided weld
Key
1 longitudinal bar
2 transverse bar
F force to be anchored by transverse bar
Figure 4 — Cross joint welded by welding processes 111, 114, 135 or 136
6.5.3 Cross joints for welding processes 21 and 23
Cross joints made by welding processes 21 and 23 shall be welded in accordance with figure 5.
© ISO 2004 – All rights reserved 7
---------------------- Page: 16 ----------------------
ISO/DIS 17660-1.3
Figure 5 — Cross joints welded by welding processes 21 and 23
6.6 Joints between reinforcing steel bars and other steel components
6.6.1 General
The
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.