SIST EN 845-3:2013
(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 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, austenitic ferritic stainless steel, zinc pre-coated steel sheet or zinc coated steel wire with or without organic coating.
Festlegungen für Ergänzungsbauteile für Mauerwerk - Teil 3: Lagerfugenbewehrung aus Stahl
Diese Europäische Norm legt die Anforderungen an Lagerfugenbewehrung für Mauerwerk für tragende (siehe 5.2.1) sowie für nichttragende (siehe 5.2.2) Zwecke 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 Europäische Norm gilt nicht für:
a) Produkte in Form einzelner Flach- oder Rundstäbe;
b) Produkte, die nicht aus festgelegten Sorten von austenitischem nichtrostenden Stahl, austenitisch-ferri-tischem nichtrostenden Stahl, Stahlblech mit Zink-Vorbeschichtung oder verzinktem Stahldraht mit oder ohne organischem/ n Überzug bestehen.
ANMERKUNG Der Anhang ZA bezieht sich nur auf geschweißte Stahldrahtgitter für tragende Zwecke für die in 5.2.1 genannten Verwendungszwecke, da keine gesetzlichen Anforderungen an Produkte dieser Familie für nichttragende Konstruktionen bekannt sind.
Spécifications pour composants accessoires de maçonnerie - Partie 3 : Treillis d'armature en acier pour joints horizontaux
La présente Norme européenne spécifie les exigences concernant les armatures 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 des treillis employés comme armatures 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, d'acier inoxydable austéno-ferritique, de tôle d'acier pré-galvanisé ou de fil d'acier galvanisé, avec ou sans revêtement organique.
NOTE Étant donné l'absence d'exigences réglementaires connues pour les produits de cette famille destinés à un usage non structurel, l'Annexe ZA fait uniquement référence aux treillis en fils soudé destinés à un usage structurel tel qu'indiqué en 5.2.1.
Specifikacija za dodatne komponente zidovine - 3. del: Jeklene mreže za armiranje naležnih reg
Ta evropski standard določa zahteve za armiranje naležnih reg zidovine za konstrukcijsko (5.2.1) in nekonstrukcijsko uporabo (5.2.2). Za izdelke, namenjene za uporabo v zidu z votlino, ta evropski standard zajema samo delovanje mrež kot armature v naležnih regah in ne njihovega delovanja kot zidnih stremen v votlini. Ta evropski standard se ne uporablja za: a) izdelke v obliki posameznih palic in drogov; b) izdelke iz materialov, ki se razlikujejo od podanih vrst avstenitnega nerjavnega jekla, avstenitnega feritnega nerjavnega jekla, pocinkane jeklene plošče ali pocinkane jeklene žice z organsko prevleko ali brez nje.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 845-3:2013
01-oktober-2013
1DGRPHãþD
SIST EN 845-3:2004+A1:2008
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
Spécifications pour composants accessoires de maçonnerie - Partie 3 : Treillis
d'armature en acier pour joints horizontaux
Ta slovenski standard je istoveten z: EN 845-3:2013
ICS:
91.060.10 Stene. Predelne stene. Walls. Partitions. Facades
Fasade
91.080.30 Zidane konstrukcije Masonry
SIST EN 845-3:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 845-3:2013
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SIST EN 845-3:2013
EUROPEAN STANDARD
EN 845-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2013
ICS 91.080.30 Supersedes EN 845-3:2003+A1:2008
English Version
Specification for ancillary components for masonry - Part 3: Bed
joint reinforcement of steel meshwork
Spécifications pour composants accessoires de Festlegungen für Ergänzungsbauteile für Mauerwerk - Teil
maçonnerie - Partie 3 : Treillis d'armature en acier pour 3: Lagerfugenbewehrung aus Stahl
joints horizontaux
This European Standard was approved by CEN on 21 March 2013.
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 CEN-CENELEC 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 CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 845-3:2013: E
worldwide for CEN national Members.
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SIST EN 845-3:2013
EN 845-3:2013 (E)
Contents Page
Foreword . 4
1 Scope. 5
2 Normative references . 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 . 11
4.2.1 General . 11
4.2.2 Welded wire meshwork . 11
4.2.3 Woven wire meshwork . 11
4.2.4 Expanded metal meshwork . 12
5 Requirements . 12
5.1 General . 12
5.2 Product applications and types . 13
5.2.1 Products for structural use . 13
5.2.2 Products for non-structural use . 13
5.3 Dimensions and limit deviations . 13
5.3.1 General . 13
5.3.2 Determination of wire size. 14
5.3.3 Determination of cross-sectional area. 15
5.3.4 Determination of other dimensions . 15
5.4 Mechanical strength . 15
5.4.1 Mechanical strength of bed joint reinforcement for structural applications . 15
5.4.2 Mechanical strength of bed joint reinforcement for non-structural applications . 16
5.5 Bond strength and anchorage length . 16
5.6 Durability . 16
5.7 Dangerous substances. 17
6 Description and designation . 17
7 Marking . 18
8 Evaluation of conformity . 18
8.1 General . 18
8.2 Initial type tests . 18
8.3 Factory production control . 19
8.3.1 General . 19
8.3.2 Testing and measuring equipment . 19
8.3.3 Production equipment . 19
8.3.4 Raw materials . 19
8.3.5 Production process . 19
8.3.6 Finished product testing . 20
8.3.7 Statistical techniques . 20
8.3.8 Marking and stock control of products . 20
8.3.9 Traceability . 20
8.3.10 Nonconforming products . 20
8.4 Sampling for initial type testing and independent testing of consignments . 20
Annex A (informative) Guidance on FPC frequencies . 22
2
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SIST EN 845-3:2013
EN 845-3:2013 (E)
Annex ZA (informative) Clauses of this European Standard addressing the provisions of
the EU Construction Products Directive . 23
ZA.1 Scope and relevant characteristics . 23
ZA.2 Procedure(s) for the attestation of conformity of products . 24
ZA.2.1 Systems of attestation . 24
ZA.2.2 Declaration of conformity . 25
ZA.3 CE marking and labelling . 26
Bibliography . 28
3
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SIST EN 845-3:2013
EN 845-3:2013 (E)
Foreword
This document (EN 845-3:2013) 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 November 2013, and conflicting national standards
shall be withdrawn at the latest by November 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such
patent rights.
This document 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).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
This document supersedes EN 845-3:2003+A1:2008.
This part has been modified to take into account the comments made in the five-year review on the
2003 version. In view of their widespread use, austenitic stainless steel has been added to the
materials that may be used.
EN 845, Specification for ancillary components for masonry, consists of the following parts:
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 organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of
Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
4
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SIST EN 845-3:2013
EN 845-3:2013 (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, austenitic
ferritic stainless steel, 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 referred to in 5.2.1 as
there are no known regulated requirements for products of this family for non-structural use.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
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 in prefabricated bed joint reinforcement
EN 10020, Definition and classification of grades of steel
EN 10088 (all parts), Stainless steels
EN 10143, Continuously hot-dip coated steel sheet and strip — Tolerances on dimensions and shape
EN 10244 (all parts), Steel wire and wire products — Non-ferrous metallic coatings on steel wire
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
EN 10346, Continuously hot-dip coated steel flat products — Technical delivery conditions
EN ISO 15630 (all parts), Steel for the reinforcement and prestressing of concrete — Test methods
5
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SIST EN 845-3:2013
EN 845-3:2013 (E)
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, 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
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
anchorage length
minimum embedment of a length of bed joint reinforcement in mortar in order to achieve the full
effectiveness of the reinforcement
3.1.9
longitudinal wire
wire placed parallel to the length of the masonry
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
6
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EN 845-3:2013 (E)
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 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;
3
ρ is 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 upper yield strength, in N/mm ;
eH
2
R is the 0,2 % proof strength, non-proportional extension, 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.
7
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SIST EN 845-3:2013
EN 845-3:2013 (E)
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.
8
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SIST EN 845-3:2013
EN 845-3:2013 (E)
Table 1 — Materials and corrosion protection systems for bed joint reinforcement
Material
a
Material Specification for body material Coating specification coating
e
reference
Organic
Mass per Mass per Thickness
coating
b c d
one side two sides per side
thickness
2 2
g/m g/m
µm µm
g
Austenitic stainless steel (molybdenum EN 10088 (all parts) — — — — R1
chrome nickel alloys)
g
Austenitic stainless steel (chrome nickel EN 10088 (all parts) — — — — R3
alloys)
f
Zinc coated steel wire EN 10244 (all parts) zinc coating 265 — — — R13
f
Zinc coated steel wire with organic EN 10244-2 zinc coating and EN 10245 60 — — min. 80
coating over all surfaces of finished organic coating:
component
− Part 1 (EN 10245-1)
mean 100 R18
− Part 2 (EN 10245-2) –
Class 2a or 2b
− Part 3 (EN 10245-3) –
Class 3
f
Zinc coated steel wire EN 10020 with EN 10244 (all parts) zinc 105 - - - R19
coating
9
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SIST EN 845-3:2013
EN 845-3:2013 (E)
f
Zinc coated steel wire EN 10020 with EN 10244 (all parts) zinc 60 - - - R20
coating
d
Zinc pre-coated EN 10346: - 275 - R21
20
steel strip or sheet zinc coated steel
f
Zinc coated steel wire with bonded epoxy EN 10020 with EN 10244-2 zinc coating 60 - - min. 80 R22
coating over all surface of finished and bonded epoxy coating according to
mean 100
component EN 10245-1, Part 1 – General rules
g
Austenitic-ferritic stainless steel EN 10088 (all parts) - - - -
R23
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-galvanised 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 average thickness of metallic protective coating on any uncut surface of a product or any surface of a post-fabrication galvanised 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.
g
Treatment of stainless steels after fabrication is necessary in relation to welds etc., in order to maintain corrosion resistance of the steel.
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SIST EN 845-3:2013
EN 845-3:2013 (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.
Figure 1 — Example of ladder type - plan and sections
Figure 2 — Example of truss type - plan
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.
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SIST EN 845-3:2013
EN 845-3:2013 (E)
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.
Figure 4 — Example of expanded metal meshwork - plan and section
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 5.7 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.
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SIST EN 845-3:2013
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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
Minimum thickness Minimum characteristic
Material
of strip yield strength of strip
2
mm N/mm
Galvanised steel according to 0,4 140
EN 10143, EN 10346
Stainless steel according to 0,3 210
EN 10088-4
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’.
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SIST EN 845-3:2013
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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 %
e
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 ⋅ρ
s
(1)
3
Nominal density ρ of mild steel is 7 850 kg/m ;
3
Nominal density ρ of stainless steel is 7 950 kg/m .
Ac
The wire size shall be obtained from 2⋅ calculated to two decimal places.
π
c) Wire with organic coating:
Use method a) or b) after removal of the organic coating from the wire.
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EN 845-3:2013 (E)
5.3.3 Determination of cross-sectional area
Cut a specimen of expanded metal meshwork from an element so that the length is a multiple of f and
not less than 200 mm. The cuts shall be clean and parallel across the element. Measure the length l
s
of the specimen up to the nearest 1 mm. 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
e
following formula:
m
6 2
A = ⋅10 mm
e
l ⋅ρ
s
(2)
3
Nominal density ρ of mild steel is 7 850 kg/m ;
3
Nominal density ρ 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 ISO 15630 (all parts) 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. If a yield phenomenon is not present, the
0,2 % proof strength (R ) shall be determined. The values of the percentage total elongation at
p0,2
maximum force, (A ) and the ratio of tensile strength to the yield strength (R /R ) shall be recorded.
gt m p0,2
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
Ratio tensile strength/
Category Total elongation at maximum force
yield strength
(A ) (R /R )
gt m p0,2
High
> 5 % > 1,08
Normal
> 2,5 % > 1,05
Low Declared value (minimum) Declared value (minimum)
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SIST EN 845-3:2013
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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 ISO 15630 (all parts
...
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Specifikacija za dodatne komponente zidovja - 3. del: Jeklene mreže za armiranje naležnih regFestlegungen für Ergänzungsbauteile für Mauerwerk - Teil 3: Lagerfugenbewehrung aus StahlSpécifications pour composants accessoires de maçonnerie - Partie 3 : Treillis d'armature en acier pour joints horizontauxSpecification for ancillary components for masonry - Part 3: Bed joint reinforcement of steel meshwork91.080.30Zidane konstrukcijeMasonry91.060.10Stene. Predelne stene. FasadeWalls. Partitions. FacadesICS:Ta slovenski standard je istoveten z:FprEN 845-3kSIST FprEN 845-3:2012en,fr,de01-december-2012kSIST FprEN 845-3:2012SLOVENSKI
STANDARD
kSIST FprEN 845-3:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN 845-3
September 2012 ICS 91.080.30 Will supersede EN 845-3:2003+A1:2008English Version
Specification for ancillary components for masonry - Part 3: Bed joint reinforcement of steel meshwork
Spécifications pour composants accessoires de maçonnerie - Partie 3 : Treillis d'armature en acier pour joints horizontaux
Festlegungen für Ergänzungsbauteile für Mauerwerk - Teil 3: Lagerfugenbewehrung aus Stahl This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee CEN/TC 125.
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 CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.
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:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. FprEN 845-3:2012: EkSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 2 Contents Page Foreword . 41 Scope. 52 Normative references . 53 Terms, definitions and symbols . 63.1 Terms and definitions . 63.2 Symbols . 74 Materials and types of products . 84.1 Materials . 84.2 Types of products . 114.2.1 General . 114.2.2 Welded wire meshwork . 114.2.3 Woven wire meshwork . 114.2.4 Expanded metal meshwork . 125 Requirements . 125.1 General . 125.2 Product applications and types . 135.2.1 Products for structural use . 135.2.2 Products for non-structural use . 135.3 Dimensions and limit deviations . 135.3.1 General . 135.3.2 Determination of wire size. 145.3.3 Determination of cross-sectional area. 155.3.4 Determination of other dimensions . 155.4 Mechanical strength . 155.4.1 Mechanical strength of bed joint reinforcement for structural applications . 155.4.2 Mechanical strength of bed joint reinforcement for non-structural applications . 165.5 Bond strength and anchorage length . 165.6 Durability . 165.7 Dangerous substances. 176 Description and designation . 177 Marking . 188 Evaluation of conformity . 188.1 General . 188.2 Initial type tests . 188.3 Factory production control . 198.3.1 General . 198.3.2 Testing and measuring equipment . 198.3.3 Production equipment . 198.3.4 Raw materials . 198.3.5 Production process . 198.3.6 Finished product testing . 208.3.7 Statistical techniques . 208.3.8 Marking and stock control of products . 208.3.9 Traceability . 208.3.10 Nonconforming products . 208.4 Sampling for initial type testing and independent testing of consignments . 20Annex A (informative)
Guidance on FPC frequencies . 22kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 3 Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 24ZA.2.1 Systems of attestation . 25ZA.2.2 Declaration of conformity. 26Bibliography . 29 kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 4 Foreword This document (FprEN 845-3:2012) has been prepared by Technical Committee CEN/TC 125 “Masonry”, the secretariat of which is held by BSI. This document is currently submitted to the Unique Acceptance Procedure. This document will supersede EN 845-3:2003+A1:2008. This document 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). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This part has been modified to take into account the comments made in the five-year review on the 2003 version. In view of their widespread use, austenitic stainless steel has been added to the materials that may be used. EN 845, Specification for ancillary components for masonry, consists of the following parts:
Part 1: Wall ties, tension straps, hangers and brackets; Part 2: Lintels; Part 3: Bed joint reinforcement of steel meshwork. kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 5 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, austenitic ferritic stainless steel, 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 referred to in 5.2.1 as there are no known regulated requirements for products of this family for non structural use. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. 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 in prefabricated bed joint reinforcement EN 10020, Definitions and classification of grades of steel EN 10088 (all parts), Stainless steels EN 10143, Continuously hot-dip coated steel sheet and strip — Tolerances on dimensions and shape EN 10244 (all parts), Steel wire and wire products — Non-ferrous metallic coatings on steel wire 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 EN 10346, Continuously hot-dip coated steel flat products — Technical delivery conditions EN ISO 15630 (all parts), Steel for the reinforcement and prestressing of concrete — Test methods kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 6 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, 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 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 anchorage length minimum embedment of a length of bed joint reinforcement in mortar in order to achieve the full effectiveness of the reinforcement
3.1.9 longitudinal wire wire placed parallel to the length of the masonry 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 kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 7 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 of a circle with an area equal to the cross-sectional area of the wire 3.2 Symbols Ac is the cross-sectional area of deformed plain wire, in mm2; Ae is the cross-sectional area of bed joint reinforcement, in mm2; Agt is the percentage total elongation at maximum force in %; 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; ls is the length of a specimen of deformed plain wire or expanded metal meshwork, in mm; 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; ρ is the nominal density of the material, in kg/m3; Rm is the tensile strength, in N/mm2; Re is the yield strength, in N/mm2; ReH
is the upper yield strength, in N/mm2; Rp0,2 is the 0,2 % proof strength, non-proportional extension, in N/mm2; Re0,5 is the proof strength at a total extension of 0,5 %, in N/mm2; t is the profile height, in mm. kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 8 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.
kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 9
Table 1 — Materials and corrosion protection systems for bed joint reinforcement
Material Specification for body material a Coating specification Material coating reference e
Mass per one side b Mass per two sides c Thickness per sided Organic coating thickness
g/m2 g/m2 µm µm
Austenitic stainless steel (molybdenum chrome nickel alloys) EN 10088-1, -2 ,-3, -4, -5
— — — — R1g Austenitic stainless steel (chrome nickel alloys) EN 10088-1, -2, -3, -4, -5 — — — — R3g
Zinc coated steel wire EN 10244 (all parts) zinc coating 265 f — — — R13 Zinc coated steel wire with organic coating over all surfaces of finished component EN 10244-2 zinc coating and EN 10245 organic coating: − Part 1 − Part 2 – Class 2a or 2b − Part 3 – Class 3 60 f — — min. 80
mean 100
R18
Zinc coated steel
wire EN 10020 with EN 10244 (all parts) zinc coating 105f - - - R19 kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 10 Zinc coated steel wireEN 10020 with EN 10244 (all parts) zinc coating 60 f - - - R20 Zinc pre-coated
steel strip or sheet EN 10346: zinc coated steel
- 275 20 d - R21 Zinc coated steel wire with bonded epoxy coating over all surface of finished component EN 10020 with EN 10244-2 zinc coating and bonded epoxy coating according to EN 10245, Part 1 – General rules 60 f - - min 80 mean 100 R22
Austenitic-ferritic stainless steel EN 10088-1, -2, -3, -4, -5 - - - - R23 g 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 average 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. g Treatment of stainless steels after fabrication is necessary in relation to welds etc in order to maintain corrosion resistance of the steel. kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 11 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. atbcdat Figure 1 — Example of ladder type - plan and sections
cbd Figure 2 — Example of truss type - plan
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. kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 12 adecbt 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. tafg Figure 4 — Example of expanded metal meshwork - plan and section 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
kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 13 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 thickness of strip Minimum characteristic yield strength of strip
mm N/mm2 Galvanised steel to EN 10143, EN 10346
0,4 140 Stainless steel to EN 10088-4 0,3 210
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’. kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 14
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 Ac not applicable ±
7 % 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 ls of the specimen up to the nearest 1 mm. Determine the weight of the specimen, m, up to the nearest 0,01 g. Calculate the cross-sectional area, Ac, to two decimal places using the following formula: 26sc10mmlmA⋅⋅=ρ Nominal density ρ
of mild steel is 7 850 kg/m3; Nominal density ρ
of stainless steel is 7 950 kg/m3. The wire size shall be obtained from πAc⋅2 calculated to two decimal places. c) Wire with organic coating: Use method a) or b) after removal of the organic coating from the wire. kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 15 5.3.3 Determination of cross-sectional area Cut a specimen of expanded metal meshwork from an element so that the length is a multiple of b (or f, as appropriate) and not less than 200 mm. The cuts shall be clean and parallel across the element. Measure the length ls of the specimen up to the nearest 1 mm. Determine the weight of the specimen m up to the nearest 0,01 g. Calculate the cross-sectional area of the specimen, Ae, to two decimal places using the following formula: 26s10mmlmAe⋅⋅=ρ Nominal density ρ of mild steel is 7 850 kg/m3; Nominal density ρ of stainless steel is 7 950 kg/m3. 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 ISO 15630 (all parts) 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. If a yield phenomenon is not present, the 0.2% proof strength (Rp0.2) shall be determined. The values of the percentage total elongation at maximum force, (Agt) and the ratio of tensile strength to the yield strength ( Rm/ReHRp0.2) shall be recorded. 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 strength
(Agt) (Rm/Rp0.2) High >5 % >1,08 Normal >2,5 % >1,05 Low Declared value (minimum) Declared value (minimum)
kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 16 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 ISO 15630 (all parts), the upper yield strength of the cross-wires or the 0,2 % proof strength (Rp0,2) 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 ISO 15630 (all parts) 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 (Rp0,2) or the proof strength for a total extension of 0,5 % (Re0,5) shall be determined, whichever is the lesser. 5.4.2.2 Expanded metal meshwork The characteristic yield strength of the strip shall be declared. The minimum values shall be in accordance with Table 2. 5.5 Bond strength and anchorage length The bond strength shall be declared for stated combinations of mortar and masonry units, together with the bond length, b, for ladder type of reinforcement and 0.6b for truss type. When sampled in accordance with Clause 8 and tested by the method of EN 846-2, the characteristic value of load capacity of the specimens shall be greater than or equal to the declared value of bond strength for the stated combinations of mortar, and masonry units, used in the tests, The anchorage length required to achieve the full effectiveness of the reinforcement in stated combinations of mortar and masonry shall be declared. The anchorage length shall be n times b for ladder type and n times 0,6b for truss type, where n is an integer which shall be declared.
5.6 Durability NOTE The durability of performance characteristics against corrosion is dependent on both the condition of exposure of the masonry and the material/coating specification. This European Standard follows the state of the art by giving material/coating specifications to suit. The materials for the manufacture of bed joint reinforcement and their corrosion protection systems shall be selected in accordance with the requirements of 4.1. kSIST FprEN 845-3:2012
FprEN 845-3:2012 (E) 17 5.7 Dangerous substances National regulations on dangerous substances may require verification and declaration on release, and sometimes content, when construction products covered by this standard are placed on those markets. In the absence of European harmonized test methods, verification and declaration on release/content should be done taking into account national provisions in the place of use. NOTE An informative database covering European and national provisions on dange
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