EN 845-3:2001
(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 European Standard specifies the requirements for welded wire meshwork, woven wire meshwork and expanded metal meshwork for use as reinforcement in bed joints for 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 geschweißte Stahldrahtgitter, Stahldrahtgeflecht und Steckmetallgitter zur Verwendung als Lagerfugenbewehrung in Mauerwerk fest.
Für Produkte, die zur Verwendung in zweischaligem Mauerwerk mit Luftschicht vorgesehen sind, wird in dieser Europäischen Norm lediglich das Verhalten dieser Produkte als Bewehrung in Lagerfugen und nicht das Verhalten als Luftschichtanker behandelt.
Diese Norm gilt nicht für:
¾ Produkte in Form einzelner Flach- oder Rundstäbe;
¾ Produkte, die nicht aus austenischem rostfreien Stahl der festgelegten Güte, Stahlblech mit Zink-Vorbeschichtung oder verzinktem Stahldraht mit oder ohne organischem Überzug bestehen.
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 en fils soudés, les treillis d'armature en fils tissés et les treillis d'armature en métal déployé utilisés comme armature pour les joints horizontaux de maçonnerie.
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 :
¾ produits sous forme de barres ou de tiges individuelles ;
¾ 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.
Specifikacija za dodatne komponente zidovine - 3. del: Jeklene mreže za armiranje naležnih reg
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 845-3:2002
01-januar-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 845-3:2001
ICS:
91.060.10 Stene. Predelne stene. Walls. Partitions. Facades
Fasade
91.080.30 Zidane konstrukcije Masonry
SIST EN 845-3:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 845-3:2002
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SIST EN 845-3:2002
EUROPEAN STANDARD
EN 845-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2001
ICS 91.060.10; 91.080.30
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 5 August 2000.
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,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 845-3:2001 E
worldwide for CEN national Members.
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EN 845-3:2001
Contents Page
Foreword. 3
1 Scope . 4
2 Normative reference. 4
3 Definitions and symbols. 5
4 Materials and types of products . 6
5 Requirements . 10
6 Description and designation. 13
7 Marking. 14
8 Evaluation of conformity . 14
Annex A(normative) Scheme of factory production control. 16
Bibliography . 18
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EN 845-3:2001
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 125 "Masonry", the secretariat
of which is held by BSI.
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 2001, and conflicting national standards shall be withdrawn
at the latest by December 2001.
This European Standard has been prepared under a mandate given to CEN by the European Commission and
the European Free Trade Association, and supports essential requirements of EU Directive(s).
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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland and the United Kingdom.
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EN 845-3:2001
1Scope
This European Standard 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.
The following are not covered by this standard:
-products in the form of individual bars or rods;
-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.
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.
EN 846-2 Methods of test for ancillary components for masonry - Part 2: Determination of bond
strength of bed joint reinforcement in mortar joints
EN 846-3 Methods of test for ancillary components for masonry - Part 3: Determination of
shear strength of welds of bed joint reinforcement
EN 10002 Metallic materials; tensile testing-
Part 1: Method of test
Part 2: Verification of the force measuring system of the tensile testing machines
Part 4 : Verification of extensometers used in uniaxial testing
EN 10020 Definitions and classification of grades of steel
EN 10088 Stainless steels
EN 10142 Continuously hot-dip zinc coated low carbon steel sheet and strip for cold forming ;
technical delivery conditions
EN 10147 Continuously hot-dip zinc coated unalloyed structural steel sheet and strip;
technical delivery conditions
EN 10214 Continuously hot-dip zinc-aluminium (ZA) coated steel strip and sheet - Technical
delivery conditions
EN 10244 Steel wire and wire products-Non-ferrous metallic coatings on steel wire -
Part 1 : General principles
Part 2 : Zinc and zinc alloy coatings on steel wire
EN 10245 Steel wire and wire products-Organic coatings on wire
ISO 10606 Steel for the reinforcement of concrete - Determination of percentage total elongation
at maximum force
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EN 845-3:2001
3 Definitions and symbols
3.1 Definitions
For the purpose of this Standard, the following 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 in order to maintain their spacing.
3.1.6 declared value : Value for a product, 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 designed application : Application based on calculations according to accepted structural design
methods.
3.1.8 element: Complete length of bed joint reinforcement either in straight cut lengths or in a roll.
3.1.9 lap length : Minimum length of a piece of bed joint reinforcement running in parallel with the next
piece in order to maintain the full effectiveness of the reinforcement in the masonry bed joint.
3.1.10 longitudinal wire : Wire placed parallel to the length of the masonry.
3.1.11 meshwork : Network created with welded or woven wires or as a result of expanding a strip with a
series of parallel slits.
3.1.12 non designed application : Application not based on calculations to accepted structural design
methods, but on accepted rules.
3.1.13 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.
3.1.14 width : Overall dimension in the plane of the bed joint reinforcement measured perpendicular to the
longitudinal axis.
3.1.15 wire : Longitudinal cold drawn metal of any cross-sectional shape.
3.1.16 wire size : Diameter in millimetres of a circle with an area equal to the cross sectional area of the
wire.
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3.2 Symbols
²
A is the cross sectional area of deformed plain wire, (mm ).
c
²
A is the cross sectional area of truss type wire meshwork or expanded metal meshwork, (mm ).
e
A is the percentage total elongation at maximum force, (%).
gt
a is the width of the bed joint reinforcement, (mm)
b is the pitch of the cross wire, (mm)
c is the wire size of the longitudinal wires, (mm)
d is the wire size of the cross wires, (mm)
e is the pitch of the longitudinal wires in woven wire meshwork, (mm)
f is the aperture length of the expanded metal meshwork (centre to centre), (mm)
g is the aperture width of the expanded metal meshwork (centre to centre), (mm)
l is the length of a specimen of deformed plain wire or expanded metal meshwork, (mm)
s
l is the length of an element of bed joint reinforcement as delivered by the manufacturer, (m)
m is the mass of a specimen of deformed plain wire or expanded metal meshwork, (g)
³
r is the nominal density of the material, (kg/m )
R is the tensile strength, (N/mm²)
m
R is the yield strength, (N/mm²)
e
R is the 0,2% proof strength, (N/mm²)
p0,2
R is the proof strength at a total extension of 0,5%, (N/mm²)
e0,5
t is the profile height, (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.
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EN 845-3:2001
Table 1 - Materials and corrosion protection systems for bed joint reinforcement
Material Specification for body Minimum coating specification Material
1)
material coating
reference
5)
No.
Mass Mass Thickness
per one per two per side
2) 3)
4)
side
sides m
2 2
g/m g/m
EN 10088
Austenitic stainless steel -- - R1
(molybdenum chrome
nickel alloys)
Austenitic stainless steel EN 10088 -- - R 3
(chrome nickel alloys)
6)
EN 10020 with EN 10244
Zinc coated steel wire 265 - - R 13
zinc coating
Zinc/ coated steel wire EN 10020 with EN 10244 60 - - R 18
6)
zinc coating and
EN 10245
with organic coating
organic coating :
over all surfaces of min. 80
Part 2 -Class 2a or 2b
finished component mean 100
or Part 3- Type III
6)
EN 10020 with EN 10244
Zinc coated steel wire 105 - - R 19
zinc coating
6)
EN 10020 with EN 10244
Zinc coated steel wire 60 - - R 20
zinc coating
Zinc pre-coated steel EN 10142/10147 /10214: - 275 19 R 21
6)
strip or sheet zinc coated steel
1) Except where specified the manufacturer may choose an appropriate grade of steel conforming to EN
10020 for zinc-coated products.
2) Coating weight is of zinc or zinc/aluminium alloy and is given for one side for wire and post fabrication
coatings.
3) Coating weight is of zinc or zinc/ aluminium alloy 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.
4) 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.
5) This number is given to allow unambiguous materials specification and gives no indication of relative
performance or quality.
6) Where zinc is stated, alternatively zinc/aluminium alloys containing approximately 5% aluminium may be
used.
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.
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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 designed applications are shown in figures 1 and 2.
b
c
d
a
t
Figure 1 - Example of ladder type - plan and sections
b
c
a
d
Figure 2 - Example of truss type - plan and sections
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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 will, when expanded, produce diamond
shaped meshwork.
NOTE: An example of expanded metal meshwork is given in figure 4.
f t
g
a
Fig. 4 - Example of expanded metal meshwork
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EN 845-3:2001
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.
The conformity criteria given in the following sub-clauses relate to initial type tests (see 8.2) and
consignment testing (see 8.4). For production evaluation the manufacturer shall define the conformity criteria
in the factory production control documentation
5.2 Product applications and types
5.2.1 Products for designed applications
Bed joint reinforcement for designed applications shall be welded wire meshwork in accordance with 4.2.2.
The manufacturer shall declare that the product is intended for designed applications.
The minimum wire size of the longitudinal wires shall be 3,0 mm.
5.2.2 Products for non designed applications
Bed joint reinforcement for non designed 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 t
...
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