EN 845-3:2003
(Main)Specification for ancillary components for masonry - Part 3: Bed joint reinforcement of steel meshwork
Specification for ancillary components for masonry - Part 3: Bed joint reinforcement of steel meshwork
This EN specifies the requirements for welded wire meshwork, woven wire meshwork and expanded metal meshwork for use as reinforcement in bed joints of masonry. Where products are intended for use in cavity wall construction, this European Standard covers only the performance of the meshwork as reinforcement in bed joints and not its performance as wall ties across the cavity.
Festlegungen für Ergänzungsbauteile für Mauerwerk - Teil 3: Lagerfugenbewehrung aus Stahl
Diese Europäische Norm legt die Anforderungen an Lagerfugenbewehrung für Mauerwerk für Konstruktionen mit Bemessung (siehe 5.2.1) sowie für Konstruktionen ohne Bemessung (siehe 5.2.2) fest.
Für Produkte zur Verwendung in zweischaligem Mauerwerk wird in dieser Europäischen Norm lediglich das Verhalten von Stahldrahtgittern als Bewehrung in Lagerfugen, nicht jedoch das Verhalten als Luftschichtanker behandelt.
Diese Norm gilt nicht für:
a) Produkte in Form einzelner Flach- oder Rundstäbe;
b) Produkte, die nicht aus austenischem rostfreien Stahl der festgelegten Güte, Stahlblech mit Zink-Vorbeschich-tung oder verzinktem Stahldraht mit oder ohne organischen Überzug bestehen.
ANMERKUNG Der Anhang ZA bezieht sich nur auf geschweißte Stahldrahtgitter für Konstruktionen mit Bemessung für die in 5.2.1 genannten Verwendungszwecke, da keine gesetzlich geregelten Anforderungen an Produkte dieser Familie für Konstruktionen ohne Bemessung bekannt sind.
Spécification pour composants accessoires de maçonnerie - Partie 3: Treillis d'armature en acier pour joints horizontaux
La présente Norme européenne spécifie les prescriptions concernant les treillis d'armature pour les joints horizontaux de maçonnerie à usage structurel (voir 5.2.1) et non-structurel (voir 5.2.2).
Dans le cas où les produits sont destinés à être utilisés dans la construction de murs doubles, la présente Norme européenne couvre uniquement les performances du treillis employé comme armature pour les joints horizontaux et ne s'applique pas aux performances du treillis utilisé comme attache pour mur double traversant la cavité.
Les produits suivants ne sont pas couverts par la présente Norme européenne :
a) produits sous forme de barres ou de tiges individuelles ;
b) produits fabriqués à partir de matériaux autres que les classes spécifiées d'acier inoxydable austénitique, la tôle d'acier pré-galvanisé ou le fil d'acier galvanisé, avec ou sans revêtement organique.
NOTE L'Annexe ZA fait uniquement référence aux treillis d'armature en fils soudés destinés à un usage structurel, traité en 5.2.1, car il n'y a pas d'exigences réglementées connues qui s'appliquent aux produits de cette famille destinés à un usage non structurel.
Specifikacija za dodatne komponente zidovine - 3. del: Jeklene mreže za armiranje naležnih reg
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 845-3:2004
01-januar-2004
1DGRPHãþD
SIST EN 845-3:2002
Specifikacija za dodatne komponente zidovine - 3. del: Jeklene mreže za armiranje
naležnih reg
Specification for ancillary components for masonry - Part 3: Bed joint reinforcement of
steel meshwork
Festlegungen für Ergänzungsbauteile für Mauerwerk - Teil 3: Lagerfugenbewehrung aus
Stahl
Spécification pour composants accessoires de maçonnerie - Partie 3: Treillis d'armature
en acier pour joints horizontaux
Ta slovenski standard je istoveten z: EN 845-3:2003
ICS:
91.060.10
91.080.30
SIST EN 845-3:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 845-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2003
ICS 91.060.10; 91.080.30 Supersedes EN 845-3:2001
English version
Specification for ancillary components for masonry - Part 3: Bed
joint reinforcement of steel meshwork
Spécification pour composants accessoires de maçonnerie Festlegungen für Ergänzungsbauteile für Mauerwerk - Teil
- Partie 3: Treillis d'armature en acier pour joints 3: Lagerfugenbewehrung aus Stahl
horizontaux
This European Standard was approved by CEN on 2 October 2002.
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 Management Centre 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, 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
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 845-3:2003 E
worldwide for CEN national Members.
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EN 845-3:2003 (E)
Contents Page
Foreword .4
1 Scope.5
2 Normative reference.5
3 Terms, definitions and symbols .6
3.1 Terms and definitions.6
3.2 Symbols .7
4 Materials and types of products.8
4.1 Materials.8
4.2 Types of products .10
4.2.1 General .10
4.2.2 Welded wire meshwork .10
4.2.3 Woven wire meshwork .11
4.2.4 Expanded metal meshwork.11
5 Requirements .12
5.1 General .12
5.2 Product applications and types.12
5.2.1 Products for structural use .12
5.2.2 Products for non-structural use .12
5.3 Dimensions and limit deviations .13
5.3.1 General .13
5.3.2 Determination of wire size.13
5.3.3 Determination of cross-sectional area.14
5.3.4 Determination of other dimensions.14
5.4 Mechanical strength.14
5.4.1 Mechanical strength of bed joint reinforcement for structural applications .14
5.4.2 Mechanical strength of bed joint reinforcement for non-structural applications .15
5.5 Bond strength and lap length .15
5.6 Durability.15
6 Description and designation.16
7 Marking.17
8 Evaluation of conformity .18
8.1 General .18
8.2 Initial type tests .18
8.3 Factory production control .19
8.4 Sampling for initial type testing and independent testing of consignments.19
Annex A (normative) Scheme of factory production control.21
A.1 General .21
A.2 Design .21
A.2.1 Design process.21
A.2.2 Communications .21
A.3 Production .21
A.3.1 Raw or incoming materials .21
A.3.2 Production Process .21
A.3.3 Tests on the finished (or part finished?) product.21
A.3.4 Equipment.22
A.4 Assessment of results and other actions.22
A.4.1 General .22
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EN 845-3:2003 (E)
A.4.2 Assessment of results.22
A.4.3 Records .22
A.4.4 Traceability .22
A.4.5 Corrective action for non-conforming materials and products .22
Annex ZA (informative) Clauses of this European Standard addressing the provisions of
the EU Construction Products Directive .23
Bibliography .28
3
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EN 845-3:2003 (E)
Foreword
This document (EN 845-3:2003) has been prepared by Technical Committee CEN/TC125 ’Masonry’, the
Secretariat of which is held by BSI, following initial preparation by Working Group 3.
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 October 2003, and conflicting national standards
shall be withdrawn at the latest by January 2005.
This European standard has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association and supports the essential requirements of the
EU Construction Products Directive (89/106/EEC).
For relationship with EU Directives, see informative Annex ZA which is an integral part of this
standard.
In this European Standard the Annex A is normative.
This document supersedes EN 845-3:2001.
This Part has been modified, including the introduction of additional requirements, taking into account
the detailed answer by CEN/TC 125 to EC mandate M116 for masonry as well as details of the
relationship of this new harmonized European standard with the EU Directives.
Specification for ancillary components for masonry” consists of the following Parts:
EN 845 “
— Part 1: Wall ties, tension straps, hangers and brackets.
— Part 2: Lintels.
— Part 3: Bed joint reinforcement of steel meshwork.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg,
Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United
Kingdom.
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EN 845-3:2003 (E)
1 Scope
This European Standard specifies the requirements for masonry bed joint reinforcement for structural
use (see 5.2.1) and for non-structural use (see 5.2.2).
Where products are intended for use in cavity wall construction, this European Standard covers only
the performance of the meshwork as reinforcement in bed joints and not its performance as wall ties
across the cavity.
This European Standard is not applicable to:
a) products in the form of individual bars or rods;
b) products formed from materials other than specified grades of austenitic stainless steel or zinc
pre-coated steel sheet or zinc coated steel wire with or without organic coating.
NOTE Annex ZA refers only to welded wire meshwork intended for structural use for structural use referred
to in 5.2.1 as there are no known regulated requirements for products of this family for non.structural use.
2 Normative reference
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
EN 846-2, Methods of test for ancillary components for masonry — Part 2: Determination of bond
strength of prefabricated bed joint reinforcement in mortar joints.
EN 846-3, Methods of test for ancillary components for masonry — Part 3: Determination of shear
load capacity of welds of prefabricated bed joint reinforcement.
EN 10002-1, Metallic materials; Tensile testing — Part 1: Method of test at ambient temperature.
EN 10002-2, Metallic materials; Tensile testing — Part 2: Verification of the force measuring system
of the tensile testing machines.
EN 10002-4, Metallic materials; Tensile testing — Part 4: Verification of extensometers used in
uniaxial testing.
EN 10020, Definition and classification of grades of steel.
EN 10088-1, Stainless steels — Part 1: List of stainless steels.
EN 10088-2, Stainless steels — Part 2: Technical delivery conditions for sheet/plate and strip for
general purposes.
EN 10088-3, Stainless steels — Part 3: Technical delivery conditions for for semi-finished products,
bars, rods and sections for general purposes.
EN 10142, Continuously hot-dip zinc coated low carbon steels strip and sheet for cold forming
Technical delivery conditions.
EN 10147, Continuously hot-dip zinc coated structural steels strip and sheet Technical delivery
conditions.
5
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EN 845-3:2003 (E)
EN 10244-1, Steel wire and wire products-Non-ferrous metallic coatings on steel wire — Part 1:
General principles.
EN 10244-2, Steel wire and wire products-Non-ferrous metallic coatings on steel wire — Part 2: Zinc
and zinc alloy coatings.
EN 10245-1, Steel wire and wire products — Organic coatings on steel wire — Part 1: General rules.
EN 10245-2, Steel wire and wire products — Organic coatings on steel wire — Part 2: PVC finished
wire.
EN 10245-3, Steel wire and wire products — Organic coatings on steel wire — Part 3: PE coated
wire.
ISO 10606, Steel for the reinforcement of concrete — Determination of percentage total elongation at
maximum force.
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1.1
bed joint
mortar layer between the bed faces of masonry units
3.1.2
bed joint reinforcement
steel reinforcement that is prefabricated for building into a bed joint
3.1.3
bond strength
tensile load that can be resisted by a specified length of reinforcement in a masonry bed joint
3.1.4
characteristic yield strength
the value of the yield strength above which 95 % of all the individual test results occur
3.1.5
cross-wires
wires which connect longitudinal wires
3.1.6
declared value
value for a product property, determined in accordance with this standard, that a manufacturer is
confident of achieving bearing in mind the variability of the manufacturing process
3.1.7
element
complete length of bed joint reinforcement either in straight cut lengths or in a roll
3.1.8
lap length
minimum length of a piece of bed joint reinforcement running parallel with the next piece in order to
maintain the full effectiveness of the reinforcement in the masonry bed joint
3.1.9
longitudinal wire
wire placed parallel to the length of the masonry
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EN 845-3:2003 (E)
3.1.10
meshwork
network created with welded or woven wires or as a result of expanding a strip with a series of parallel
slits
3.1.11
profile height
maximum overall height (distance between the upper and lower surfaces at right angles to the length
and width of the joint) of the embedded portion of the bed joint reinforcement
3.1.12
shear load capacity
mean value for sample of product specimens of the failure loads at the junction between two wires
loaded in the direction of the longitudinal axis in the plane of the bed joint reinforcement
3.1.13
width
overall dimension in the plane of the bed joint reinforcement measured perpendicular to the
longitudinal axis
3.1.14
wire
longitudinal cold drawn metal of any cross-sectional shape
3.1.15
wire size
diameter in millimetres of a circle with an area equal to the cross-sectional area of the wire
3.2 Symbols
2
A is the cross-sectional area of deformed plain wire, in mm ;
c
2
A is the cross-sectional area of bed joint reinforcement, in mm ;
e
A is the percentage total elongation at maximum force, in %;
gt
a is the width of the bed joint reinforcement, in mm;
b is the pitch of the cross-wire, in mm;
c is the wire size of the longitudinal wires, in mm;
d is the wire size of the cross-wires, in mm;
e is the pitch of the longitudinal wires in woven wire meshwork, in mm;
f is the aperture length of the expanded metal meshwork (centre to centre), in mm;
g is the aperture width of the expanded metal meshwork (centre to centre), in mm;
l is the length of a specimen of deformed plain wire or expanded metal meshwork, in mm;
s
l is the length of an element of bed joint reinforcement as delivered by the manufacturer, in m;
m is the mass of a specimen of deformed plain wire or expanded metal meshwork, in g;
7
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EN 845-3:2003 (E)
3
ris the nominal density of the material, in kg/m ;
2
R is the tensile strength, in N/mm ;
m
2
R is the yield strength, in N/mm ;
e
2
R is the 0,2 % proof strength, in N/mm ;
p0,2
2
R is the proof strength at a total extension of 0,5 %, in N/mm ;
e0,5
t is the profile height, in mm;
4 Materials and types of products
4.1 Materials
Materials for the manufacture of bed joint reinforcement and their protective coatings shall be selected
from those given in Table 1. Within a product, stainless steel shall not be mixed with other types of steel.
Unless otherwise chosen by the manufacturer, the bed joint reinforcement should be tested using
masonry units conforming to EN 771 with a normalized compressive strength of not greater than
2
5 N/mm and general purpose mortar conforming to EN 998-2 with a compressive strength not greater
2
than 1,5 N/mm .
8
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m
EN 845-3:2003 (E)
Table 1 — Materials and corrosion protection systems for bed joint reinforcement
a
Material Specification for body material Minimum coating specification Material
coating
e
reference
Mass Mass per Thickness Organic
b c
per one side two sides per side coating
2 2 d
g/m g/m m thickness
mm
Austenitic stainless steel EN 10088 — — — — R1
(molybdenum chrome nickel
alloys)
Austenitic stainless steel EN 10088 — — — — R 3
(chrome nickel alloys)
Zinc coated steel wire EN 10020 with EN 10244 zinc coating 265 — — — R 13
f
Zinc coated steel wire with EN 10020 with EN 10244 zinc coating 60 — — min. 80
organic coating over all surfaces and EN 10245 organic coating : mean 100 R 18
of finished component Part 2 -Class 2a or 2b
or Part 3- Type III
Zinc coated steel wire EN 10020 with EN 10244 zinc coating 105 - - - R 19
f
Zinc coated steel wire EN 10020 with EN 10244 zinc coating 60 -- - R 20
Zinc pre-coated steel strip or sheet EN 10142/ EN 10147: zinc coated steel - 275 19 - R 21
a
Except where specified an appropriate grade of steel conforming to EN 10020 for zinc-coated products may be chosen.
b
Coating weight is of zinc and is given for one side for wire and post fabrication coatings.
c
Coating weight is of zinc and given for two sides for pre-galvanized sheet products. The mean one side figure will be 50 % of the two side figure but not
necessarily evenly distributed.
d
Coating thickness refers to the minimum thickness of metallic protective coating on any uncut surface of a product or any surface of a post-fabrication
galvanized product.
e
This number is given to allow unambiguous materials specification and gives no indication of relative performance or quality.
f
On round wire before any subsequent processing.
9
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EN 845-3:2003 (E)
4.2 Types of products
4.2.1 General
Welded wire meshwork and woven wire meshwork shall be manufactured from smooth, indented or
ribbed wire, round or flattened wire, either of low carbon steel protected against corrosion or of a
corrosion resistant steel. Expanded metal meshwork shall be manufactured from strip steel of the
appropriate thickness and corrosion resistance.
4.2.2 Welded wire meshwork
The reinforcing element produced shall consist of longitudinal wires welded to cross-wires (ladder
type) or to a continuous wire diagonal (truss type).
NOTE Examples of products for structural applications are shown in Figures 1 and 2.
b
c
d
a a
or
t t
Figure 1 — Example of ladder type - plan and sections
b
c
d
NOTE Cross section not shown.
Figure 2 — Example of truss type - plan
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EN 845-3:2003 (E)
4.2.3 Woven wire meshwork
The meshwork shall be made by winding wire around longitudinal wires following a repetitive pattern.
NOTE An example of woven wire meshwork is given in Figure 3.
t
c
d
a
e
b
Figure 3 — Example of woven wire meshwork - plan and section
4.2.4 Expanded metal meshwork.
The meshwork shall be made from a steel strip, slit in a pattern which, when expanded, will produce
diamond shaped meshwork.
NOTE An example of expanded metal meshwork is given in Figure 4.
f t
g
a
Figure 4 — Example of expanded metal meshwork - plan and section
11
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EN 845-3:2003 (E)
5 Requirements
5.1 General
The requirements and properties specified in this standard shall be defined in terms of the test
methods and procedures referred to in this European Standard.
NOTE The conformity criteria given in 5.2 to 5.6 inclusive relate to initial type tests (see 8.2) and, when
relevant, consignment testing (see 8.4).
For production evaluation the conformity criteria shall be defined in the factory production control
documentation
5.2 Product applications and types
5.2.1 Products for structural use
Bed joint reinforcement for structural applications shall be welded wire meshwork in accordance with
4.2.2. The product shall be declared as intended for structural applications.
The minimum wire size of the longitudinal wires shall be 3,0 mm.
5.2.2 Products for non-structural use
Bed joint reinforcement for non-structural applications shall be any of the types in accordance with
4.2.
The minimum wire size of the longitudinal wires of welded or woven wire meshwork shall be 1,25 mm.
Cross-wires for woven wire meshwork shall be wound around the longitudinal wires for at least 1,5
turns.
Expanded metal meshwork shall be fabricated from one of the two strip materials given in Table 2.
Table 2 — Properties of strip for expanded metal meshwork
Material Minimum Minimum characteristic
thickness of yield strength of strip
strip
2
mm N/mm
Galvanized steel to EN 10142 0,4 140
Stainless steel to EN 10088 0,3 210
12
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EN 845-3:2003 (E)
5.3 Dimensions and limit deviations
5.3.1 General
The dimensions of the bed joint reinforcement as listed in Table 3 shall be declared. The limit
deviations on dimensions shall be as given in Table 3. Specimens of bed joint reinforcement, when
sampled in accordance with clause 8 and measured in accordance with 5.3.2 or 5.3.3, shall not
deviate from the declared values by more than the limit deviations given in Table 3.
NOTE See 3.1.6 for definition of the term ‘declared value’.
Table 3 — Dimensional deviations
Dimension Limit deviations
Wire meshwork Expanded metal
length l ± 1,5 % + 5 %
- 2 %
width a ± 5 mm ± 5 mm
± 0,2 mm if t £ 2 mm
and
profile height t ± 0,4 mm if t > 2 mm ± 0,5 mm
wire sizes c and d ± 0,1 mm -
cross-sectional area A not applicable ± 7 %
c
pitch of wires b and e ± 3 % -
aperture sizes f and g not applicable ± 2 mm
5.3.2 Determination of wire size
The wire size shall be determined as follows:
a) Plain round wire
Measure the diameter of each wire in a sample with a micrometer, in two directions, approximately at
right angles, to the nearest 0,01 mm. The wire size shall be the mean of the two diameters.
b) Deformed plain wire
Cut specimens of each wire from an element so that the length is not less than 200 mm and made up
of one, or more than one, piece. The cuts shall be clean and parallel across the wire. Measure the
length l of the specimen up to the nearest 1 mm. Determine the weight of the specimen, m, up to the
s
nearest 0,01 g. Calculate the cross-sectional area, A , to two decimal places using the following
c
formula:
m
6 2
A = ⋅10 mm
c
l ⋅r
s
3
Nominal density r of mild steel is 7 850 kg/m ;
3
Nominal density r of stainless steel is 7 950 kg/m .
13
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EN 845-3:2003 (E)
A
c
The wire size shall be obtained from ⋅ calculated to two decimal places.
2
p
c) Wire with organic coating
Use method a) or b) after removal of the organic coating from the wire.
5.3.3 Determination of cross-sectional area
Cut a specimen of truss type welded wire meshwork or expanded metal meshwork from an element
b (or f, as appropriate) and not less than 200 mm. The cuts shall be
so that the length is a multiple of
clean and parallel across the element. Measure the length l of the specimen up to the nearest 1 mm.
s
Determine the weight of the specimen m up to the nearest 0,01 g. Calculate the cross-sectional area
of the specimen, A , to two decimal places using the following formula:
e
m
6 2
A = ⋅10 mm
e
l ⋅r
s
3
Nominal density r of mild steel is 7 850 kg/m ;
3
Nominal density r of stainless steel is 7 950 kg/m .
5.3.4 Determination of other dimensions
Dimensions shall be measured using a calibrated device capable of achieving an error limit of ± 1 %.
5.4 Mechanical strength
5.4.1 Mechanical strength of bed joint reinforcement for structural applications
5.4.1.1 Characteristic yield strength of longitudinal wires
The value of the characteristic yield strength of the longitudinal wires shall be declared. When
sampled in accordance with clause 8 and tested by the method of EN 10002-1, EN 10002-2 and EN
10002-4 and ISO 10606 using test specimens each containing at least one weld within the gauge
length, the upper yield strength of the longitudinal wires shall be not less than the declared value. The
values of the percentage total elongation at maximum force,(A ) and the ratio of tensile strength to
gt
yield strength (R /R ) shall be recorded.
m e
5.4.1.2 Ductility of longitudinal wires
The ductility category of the longitudinal wires in accordance with Table 4 using the data gathered in
the yield strength test of 5.4.1.1 shall be declared.
Table 4 — Ductility categories
Category Total elongation at maximum force Ratio tensile strength/yield
(A ) strength (R /R )
gt m e
High
>5 % >1,08
Normal
>2,5 % >1,05
Low Declared value (minimum) Declared value (minimum)
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EN 845-3:2003 (E)
5.4.1.3 Characteristic yield strength of cross-wires
The characteristic yield strength of the cross-wires shall be declared. Where the structural
performance of the bed joint reinforcement is reliant, even in part, on the cross-wires, the strength of
the cross-wires shall be not less than the characteristic yield strength of the longitudinal wires. When
sampled in accordance with clause 8 and tested by the method of EN 10002-1, EN 10002-2 and EN
10002-4 the upper yield strength of the cross-wires shall be not less than the declared value.
5.4.1.4 Shear load capacity of the welds
Where the structural performance of the bed joint reinforcement is reliant, even in part, on the shear
load capacity of the welds, the shear load capacity of the welds shall be declared. When sampled in
accordance with clause 8 and tested by the method of EN 846-3, the shear load capacity of the welds
shall be not be less than the declared value. In addition no load capacity of a specimen in shear shall
be less than 70 % of the declared value.
5.4.2 Mechanical strength of bed joint reinforcement for non-structural applications
5.4.2.1 Welded or woven wire meshwork
The characteristic yield strength of the wires shall be declared. When sampled in accordance with
clause 8 and tested by the method of EN 10002-1, EN 10002-2 and EN 10002-4 and in the case of
welded wire meshwork using test specimens each containing at least one weld within the gauge
length, the upper yield strength of the wires shall be not less than the declared value. If a yield
phenomenon is not present, the 0,2 % proof strength (R ) or the proof strength for a total extension
p0,2
of 0,5 % (R ) shall be determined, whichever is the lesser.
e0,5
5.4.2.2 Expanded metal meshwork
The characteristic yield strength of the strip shall be decl
...
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