EN 845-1:2001
(Main)Specification for ancillary components for masonry - Part 1: Ties, tension straps, hangers and brackets
Specification for ancillary components for masonry - Part 1: Ties, tension straps, hangers and brackets
This European Standard specifies requirements for ties, tension straps, hangers and brackets for interconnecting masonry and for connecting masonry to other parts of works and buildings including walls, floors, beams, and columns. Where anchors or fasteners are supplied or specified as part of an ancillary component, the requirements including performance requirements apply to the complete product. The following are not covered by this standard: fire performance requirements, anchors and fasteners other than as part of an ancillary component, shelf angles, wall starter plates for trying into existing walls.
Festlegungen für Ergänzungsbauteile für Mauerwerk - Teil 1: Anker, Zugbänder, Auflager und Konsolen
Diese Europäische Norm legt die Anforderungen an Anker, Zugbänder, Auflager und Konsolen zur Verbindung von Mauerwerk untereinander und zur Verbindung von Mauerwerk mit anderen Teilen von baulichen Anlagen und Gebäuden, z. B. Wänden, Geschossdecken, Trägern und Stützen, fest. Wenn Anker oder Befestigungsmittel als Teil eines Ergänzungsbauteils geliefert werden oder als solches festgelegt sind, gelten die Anforderungen ein-schließlich der Leistungsanforderungen für das vollständige Produkt.
Folgende Punkte sind nicht Gegenstand der vorliegenden Norm:
¾ Anforderungen an das Brandverhalten;
¾ Anker und Befestigungsmittel, die nicht Komponenten eines Ergänzungsbauteils sind;
¾ Wandabfangungen;
¾ Wandanschlussplatten für die Verankerung in bestehenden Wänden.
Spécification pour composants accessoires de maçonnerie - Partie 1: Attaches, brides de fixation, brides de suspension et consoles
La présente Norme européenne spécifie les prescriptions concernant les attaches, brides de fixation, brides de suspension et consoles utilisées pour assurer les liaisons entre des maçonneries et les liaisons entre la maçonnerie et d'autres parties de l'ouvrage ou de la construction, incluant les murs, planchers, poutres et poteaux. Lorsque des éléments d'ancrage ou de fixation sont fournis ou spécifiés comme partie intégrante d'un composant accessoire, les prescriptions, y compris les prescriptions de performance, s'appliquent au produit complet.
Les aspects suivants ne sont pas couverts par la présente norme :
¾ les prescriptions en matière de comportement au feu ;
¾ les éléments d'ancrage et de fixation autres que ceux qui font partie intégrante d'un composant accessoire ;
¾ les cornières supports ;
¾ les plaques supports de mur destinées à assurer la fixation avec des murs existants.
Specifikacija za dodatne komponente zidovine - 1. del: Vezna stremena, sidrni trakovi, obešala in konzole
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 845-1:2002
01-januar-2002
Specifikacija za dodatne komponente zidovine - 1. del: Vezna stremena, sidrni
trakovi, obešala in konzole
Specification for ancillary components for masonry - Part 1: Ties, tension straps, hangers
and brackets
Festlegungen für Ergänzungsbauteile für Mauerwerk - Teil 1: Anker, Zugbänder,
Auflager und Konsolen
Spécification pour composants accessoires de maçonnerie - Partie 1: Attaches, brides
de fixation, brides de suspension et consoles
Ta slovenski standard je istoveten z: EN 845-1:2001
ICS:
91.060.10 Stene. Predelne stene. Walls. Partitions. Facades
Fasade
91.080.30 Zidane konstrukcije Masonry
SIST EN 845-1:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 845-1:2002
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SIST EN 845-1:2002
EUROPEAN STANDARD
EN 845-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2001
ICS 91.060.10; 91.080.30
English version
Specification for ancillary components for masonry - Part 1: Ties,
tension straps, hangers and brackets
Spécification pour composants accessoires de maçonnerie Festlegungen für Ergänzungsbauteile für Mauerwerk - Teil
- Partie 1: Attaches, brides de fixation, brides de 1: Anker, Zugbänder, Auflager und Konsolen
suspension et consoles
This European Standard was approved by CEN on 12 May 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 845-1:2001 E
worldwide for CEN national Members.
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EN 845-1:2001
Contents Page
Foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms, definitions and symbols . 5
4 Materials . 8
5 Requirements . 8
6 Description and designation . 13
7 Marking . 13
8 Evaluation of conformity. 14
Annex A (informative) Fixings. 17
Annex B (normative) Materials and protective coatings . 19
Annex C (normative) Scheme of factory production control . 23
Bibliography . 24
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EN 845-1:2001
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.
Annex A is informative. The annexes B and C are normative.
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) and includes the performance requirements
referred to in the Eurocode for masonry Structures.
In the present state of the art it is not practicable to include a means of verification of compliance
with fire performance requirements for all products covered by this standard. Consequently none
are included.
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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1 Scope
This European Standard specifies requirements for ties, tension straps, hangers and brackets for
interconnecting masonry and for connecting masonry to other parts of works and buildings including
walls, floors, beams, and columns. Where anchors or fasteners are supplied or specified as part of
an ancillary component, the requirements including performance requirements apply to the
complete product.
The following are not covered by this standard:
- fire performance requirements
- anchors and fasteners other than as part of an ancillary component;
- shelf angles;
- wall starter plates for tying-in to existing walls.
2 Normative references
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.
prEN 846-4 Methods of test for ancillary components for masonry - Part 4:
Determination of tensile and compressive load capacity and stiffness of
wall ties (wall test)
EN 846-5 Methods of test for ancillary components for masonry - Part 5:
Determination of tensile and compressive load capacity and stiffness of
wall ties (couplet test)
EN 846-6 Methods of test for ancillary components for masonry - Part 6:
Determination of tensile and compressive load capacity and stiffness of
wall ties (single end test)
EN 846-7 Methods of test for ancillary components for masonry - Part 7:
Determination of shear load resistance and stiffness of shear ties (couplet
test for mortar joint connections)
EN 846-8 Methods of test for ancillary components for masonry - Part 8:
Determination of strength and stiffness of joist hangers
EN 846-10 Methods of test for ancillary components for masonry - Part 10:
Determination of flexural resistance and stiffness of brackets and support
angles.
prEN 846-13 Methods of test for ancillary components for masonry - Part 13:
Determination of resistance to impact, abrasion and corrosion of organic
coatings
EN 10020 Definitions 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 10142 Continuously hot-dip zinc coated low carbon steel strip and sheet for cold
forming; technical delivery conditions
EN 10143 Continuously hot-dip metal coated steel strip and sheet ; tolerances on
dimensions and shape
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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
Part 1: General rules
Part 2: PVC coated wire
Part 3: PE coated wire
EN ISO 1463 Metallic and oxide coatings - Measurement of coating thickness -
Microscopical method (ISO 1463:1982)
ISO 75 Plastics - Determination of temperature of deflection under load
Part 1: General test method
Part 2: Plastics and ebonite
ISO 178: 1993 Plastics - Determination of flexural properties
ISO 180: 1993 Plastics - Determination of Izod impact strength
ISO 306 : 1994 Plastics - Thermoplastic materials - Determination of Vicat softening
temperature (VST)
ISO 427 : 1983 Wrought copper-tin alloys - Chemical composition and forms of wrought
products
ISO 428 : 1983 Wrought copper-aluminium alloys - Chemical composition and forms of
wrought products
ISO 431 : 1981 Copper refinery shapes
ISO 527: 1993 Plastics - Determination of tensile properties:
Part 1: General principles;
Part 2: Test conditions for moulding and extrusion plastics
ISO 1133 : 1997 Plastics - Determination of the melt mass-flow rate (MFR) and the melt
volume-flow rate (MVR) of thermoplastics
ISO 1183: 1987 Plastics - Method for determining the density and relative density of non-
cellular plastics
EN ISO 1461 Hot dip galvanized coatings on fabricated iron and steel articles –
Specifications and test methods (ISO 1461:1999)
ISO 2039-2: 1987 Plastics - Determination of hardness - Part 2: Rockwell hardness
3 Terms, definitions and symbols
3.1 Terms and definitions.
For the purposes of this standard the following terms and definitions apply :
NOTE 1 Dimensions and terms relating to wall ties are given in figure 1.
3.1.1 asymmetrical tie :
(1) Tie which is of a different physical design at either end over its embedment depth (or end
fixing). The centre section may be symmetrical or asymmetrical in detail.
NOTE Examples are given in figure 2a.
(2) Tie which is physically identical at either end over its embedment depth (or end fixing) but
which is fixed in a different manner at each end is also defined as asymmetrical for the purposes of
the test procedure.
NOTE Examples are given in figure 2b.
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3.1.2 bracket : Device attached to structural elements, comprising an individual support for two
adjacent masonry units, which form part of a masonry wall.
NOTE Examples are given in figure 3.
3.1.3 cavity wall tie : Device for connecting a masonry leaf across a cavity to another masonry leaf
or to a structural frame to resist tension and compression forces while allowing limited differential
movement in the plane of the wall. (Examples are given in figures 2 and 4).
NOTE Wall ties are further subclassified as asymmetrical or symmetrical and as
horizontal, slope-tolerant or movement-tolerant. Examples are given in figures 2, 4
and 5 respectively.
3.1.4 cavity width : Distance between the cavity faces of the masonry leaves of a cavity wall,
measured perpendicular to the plane of the wall.
3.1.5 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.
3.1.6 design embedment length : Length of a tie, strap or hanger designed to be embedded in
mortar. (see figure 1)
3.1.7 fixing : Device, (e.g. a nail, screw, screw/plug, anchor or bolt) used to connect ancillary
components to masonry or to supporting structures to resist tension and shear forces.
NOTE Examples are listed in Annex A.
3.1.8 horizontal wall tie: Wall tie which is designed to be installed approximately horizontally and
in the plane of the mortar joint across a cavity and which is tested axially and in the plane of the
mortar joint.
NOTE Examples are given in figures 2, and 4.
3.1.9 joist hanger (face fixing type) : Device for supporting a joist, beam, truss or rafter on a
masonry wall via fixing bolts or screws.
NOTE Examples are given in figure 6.
3.1.10 joist hanger (joint fixing type) : Device for supporting a joist, beam, truss or rafter on a
masonry wall by direct loading via a flange which is embedded in a mortar joint.
NOTE Examples are given in figure 7.
3.1.11 load capacity: Mean value for a sample of product specimens of the failure load or load at
an extreme displacement given in the appropriate test method, whichever is the lesser.
3.1.12 movement-tolerant cavity wall tie : Cavity wall tie which is designed to allow large in-plane
differential movements of the walls, without generating large shear stresses, by the use of flexible
body materials, free-running slot systems, articulated joints or other means.
NOTE Examples are given in figures 8 and 9c.
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3.1.13 profile height : Maximum overall height (distance between the upper and lower surface at
right angles to the length and width of the joint) of the embedded portion of a wall tie, strap or
hanger. (see figure 1)
3.1.14 shear tie: Tie designed to transmit shear, tension and compression forces between two
adjacent sections of masonry or between structural frames and masonry.
NOTE Shear ties are subclassified as symmetrical or asymmetrical. (Examples are given in
figure 10).
3.1.15 slip tie (general purpose) : Tie designed to transmit only shear forces between two
adjacent sections of masonry or between masonry and structural frames while allowing in-plane
movement.
NOTE Examples are given in figure 11.
3.1.16 slip tie (head restraint type) : Tie designed to transmit only shear forces between masonry
and structural frames while allowing vertical in-plane movement.
NOTE Examples are given in figure 12.
3.1.17 slope-tolerant tie : Wall tie designed to be installed across a cavity and to function
satisfactorily with a significant slope from the horizontal.
NOTE Examples are given in figure 5.
3.1.18 slot tie : Tie whose end fixing (at one end) is by means of engaging a re-entrant key (e.g.
dovetail) into a slot either embedded in a concrete wall or surface fixed to concrete, steel or
masonry walls or frame elements and which is free to slide in the slot either only during installation
(for adjustment purposes) or both during installation and while in service (to allow differential
movement).
NOTE Examples are given in figure 9.
3.1.19 symmetrical tie : Tie which is physically identical at each end over its embedment depth (or
end fixing) and which is fixed in an identical manner at each end. The centre section may be
symmetrical or asymmetrical in detail.
NOTE Examples are given in figure 4.
3.1.20 tension strap : Device for connecting masonry walls to other adjacent components such as
floors and roofs and which resists tension forces.
NOTE Examples are given in figure 13.
3.1.21 tie: Device capable of transferring loads between masonry leaves or between masonry and
other structures, in order to limit their relative movement in purely one or more planes, as required.
NOTE Examples are given in figures 1, 2, 4, 8, and 10
3.2 Symbols
L the overall perpendicular length of a bracket from the fixing surface to the extremity of the
support flange,(mm).
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NOTE Examples are given in figure 3.
4 Materials
4.1 General
Materials for the manufacture of components covered by this standard shall be selected from
Annex B and the manufacturer shall declare the material/coating reference. The materials within a
product, including those for any fixings, shall be compatible and stainless steel shall not be in
contact with other types of steel.
4.2 Fixings and materials not supplied by the manufacturer
The manufacturer shall declare the combinations of masonry units, mortars and fixings (where
appropriate) for which the relevant declared values of product performance characteristics are valid.
Where the required fixings are not supplied as part of the product, the manufacturer of the ancillary
component shall specify such fixings in accordance with a European Standard or European
Technical Approval. The materials for such fixings shall be compatible with that of the component.
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 Dimensions and tolerances
5.2.1 Method of measurement and accuracy
Dimensions shall be measured using a calibrated device capable of achieving an accuracy of ±1 %.
5.2.2 Length, applicable cavity width, embedment and fixings (number, size and location)
5.2.2.1 Ties
The design embedment length of ties shall be at least 40 mm.
The manufacturer shall declare the overall length of ties. When sampled in accordance with clause
8 and measured, the overall length of ties shall be within ±2,5 % of the declared value given by the
manufacturer.
For cavity wall ties, the manufacturer shall declare the range of cavity widths over which the
declared values of product performance characteristics are valid.
The manufacturer shall declare, for each end of a tie, the design embedment length, or details and
instructions for fixing.
NOTE 1 For symmetrical ties the design embedment length in mortar is equal to (the
overall length - cavity width)/2.
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NOTE 2 The requirements of this standard may be applied to some component parts of
more complex tying systems (e.g. head restraint slip ties of the types shown in figure 12).
5.2.2.2 Tension straps
The manufacturer shall declare the overall dimensions of each length of a strap together with
details of the number, size and location of fixings as appropriate. When sampled in accordance with
Clause 8 and measured, dimensions shall be within ± 5% or 3 mm of the declared values given by
the manufacturer whichever is the lesser.
5.2.2.3 Joist hangers
The design embedment length of joist hangers (joint fixing type) shall be at least 60 mm. The clear
length of the joist flange (all types) shall be at least 75 mm.
The manufacturer shall declare the following dimensions. When sampled in accordance with clause
8 and measured these dimensions shall be within ± 5% or 3 mm of the declared values given by the
manufacturer whichever is the lesser:
- the clear length of the masonry flange;
- the clear length of the joist flange;
- the perpendicular distance between the bearing surface of the masonry flange and the
bearing surface of the joist flange (joint fixing type only);
- the width of the joist for which the hanger is intended.
5.2.2.4 Brackets
The manufacturer shall declare the overall perpendicular length, L (see figure 3), from the fixing
surface to the extremity of the support flange. When sampled in accordance with Clause 8 and
measured, L shall be within ±5% or ± 3 mm of the declared value given by the manufacturer,
whichever is the lesser.
5.2.3 Thickness or diameter
5.2.3.1 Ties, tension straps and joist hangers
The manufacturer shall declare the minimum thickness of mortar joint for which the component is
suitable and, when sampled in accordance with Clause 8 and measured, the parts of the
component to be embedded in mortar shall:
a) have neither a thickness nor diameter greater than half the declared value of joint
thickness;
b) have a profile height not greater than 0,75 times the declared value of joint thickness.
5.2.3.2 Brackets
The manufacturer shall declare the minimum thickness of the material. When sampled in
accordance with Clause 8 and measured, the minimum thickness shall be equal to or greater than
the declared value given by the manufacturer.
The tolerance on thickness for coated steel flat materials shall be in accordance with tables 1 and 2
of EN 10143.
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5.2.4 Other dimensions
5.2.4.1 General
The manufacturer shall declare any other dimensions, including the number, size and location of
fixings, which affect the structural performance of a product or which co-ordinate with other
components. When sampled in accordance with clause 8 and measured, these dimensions shall
be within ±5% of the declared values.
5.2.4.2 Movement-tolerant cavity wall ties
For movement-tolerant cavity wall ties the manufacturer shall declare the maximum permissible
range of movement.
5.2.4.3 Slope-tolerant cavity wall ties
For slope-tolerant ties the manufacturer shall declare the maximum and minimum permissible
slopes.
5.3 Mechanical strength
5.3.1 General
Where cavity wall ties are declared by the manufacturer to be movement-tolerant and/or slope-
tolerant then their mechanical strength shall be determined for the maximum condition of movement
and/or maximum slope.
NOTE Additional information in the form of recommendations for fixings relevant to the
products referred to in this European Standard is given in Annex A (informative).
5.3.2 Wall ties and associated fixings
5.3.2.1 General
Wall ties shall be designated as either symmetrical or asymmetrical and either horizontal, slope-
tolerant or movement-tolerant. The mechanical performance of slope-tolerant and movement-
tolerant ties at all points of their ranges of slope or movement shall be equal to or greater than the
declared values given by the manufacturer.
5.3.2.2 Tensile load capacity
The manufacturer shall declare the tensile load capacity of the wall ties. When sampled in
accordance with Clause 8 and tested by the method of EN 846-5 or EN 846-6 as appropriate, the
tensile load capacity shall be equal to or greater than the declared value given by the manufacturer,
but not less than 600 N and additionally no individual specimen tensile load shall be less than 70%
of the declared value given by the manufacturer. For asymmetrical ties, where the ends are tested
separately, the strength shall be that of the weaker end. The two supplementary tests over the 15
mm wider cavity shall not give tensile loads less than 50% of the declared value given by the
manufacturer.
5.3.2.3 Compressive load capacity
The manufacturer shall declare the compressive load capacity of the wall ties. When sampled in
accordance with clause 8 and tested by the method of EN 846-5 or EN 846-6 as appropriate, the
compressive load capacity shall be equal to or greater than the declared value given by the
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manufacturer but not less than 350 N and additionally no individual specimen compressive load
shall be less than 70% of the declared value given by the manufacturer. For asymmetrical ties,
where the ends are tested separately, the strength shall be that of the weaker end. The two
supplementary tests over the 15 mm wider cavity shall not give compressive loads less than 50% of
the declared value given by the manufacturer.
5.3.2.4 Displacement under load
When measured in accordance with EN 846-5 or EN 846-6 as appropriate, the displacement of any
individual tie at one third of the manufacturer’s declared value of load capacity shall not exceed 1
mm. In the two supplementary tests over the 15 mm wider cavity the displacement of either
individual tie at one sixth of the manufacturer’s declared value of load capacity shall not exceed
1 mm.
5.3.3 Shear ties
5.3.3.1 Shear load capacity
Shear ties shall be designated as either symmetrical or asymmetrical and shall comply with the
requirements of 5.3.2.
The manufacturer shall declare the shear load capacity of the shear ties. When sampled in
accordance with clause 8 and tested by the method of EN 846-7, the shear load capacity shall be
equal to or greater than the declared value given by the manufacturer for either the horizontal or the
vertical direction or for both directions. Additionally no individual specimen shear load shall be less
than 70% of the declared value given by the manufacturer.
5.3.3.2 Displacement under load
When measured in accordance with EN 846-7, the displacement of any individual tie at one third of
the manufacturer’s declared value of load capacity shall not exceed 1 mm.
5.3.4 Slip ties (general purpose)
5.3.4.1 General
Slip ties shall be designated as either symmetrical or asymmetrical.
5.3.4.2 Shear load capacity
The manufacturer shall declare the shear load capacity of the slip ties. When sampled in
accordance with Clause 8 and tested by the method of EN 846-7, the shear load capacity shall be
equal to or greater than the declared value given by the manufacturer for either the horizontal or the
vertical direction or for both directions. Additionally no individual specimen shear load shall be less
than 70% of the declared value given by the manufacturer.
5.3.4.3 Displacement under load
When measured in accordance with EN 846-7, the displacement of any individual tie at one third of
the manufacturer’s declared value of load capacity shall not exceed 1 mm.
5.3.5 Slip ties (head restraint type)
The manufacturer shall declare the shear load capacity of the slip ties. When calculated in
accordance with accepted engineering principles, the predicted shear load capacity shall be not
less than the declared value given by the manufacturer.
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5.3.6 Joist hangers
5.3.6.1 Load capacity
The manufacturer shall declare the load capacity of the joist hangers. When sampled in
accordance with clause 8 and tested by the method of EN 846-8, the load capacity shall be equal to
or greater than the declared value given by the manufacturer and not less than 4 kN. Additionally,
no individual specimen load shall be less than 90% of the declared value given by the
manufacturer.
5.3.6.2 Deflection under load
When measured in accordance with EN 846-8, the deflection of any individual joist hanger at one
third of the declared value of load capacity shall not exceed 1 mm.
5.3.7 Brackets
5.3.7.1 Load capacity
The manufacturer shall declare the load capacity in normal loading format. When sampled in
accordance with clause 8 and tested by the method of EN 846-10, the load capacity in normal
loading format shall be equal to or greater than the declared value given by the manufacturer.
Additionally no individual specimen load shall be less than 90% of the declared value given by the
manufacturer.
5.3.7.2 Deflection under load
When measured in accordance with EN 846-10, the deflection of any individual bracket at one third
of the declared value of load capacity shall not exceed 2 mm.
NOTE When tested the deflection of the bracket is measured at 10 mm ±0,5 mm
from the free edge and the value obtained will, therefore, be much greater than the
deflection of masonry supported by the product type.
5.3.8 Tension straps
5.3.8.1 Tensile load capacity
The manufacturer shall declare the load capacity. When sampled in accordance with Clause 8 and
tested by the method of prEN 846-4, the load capacity shall be equal to or greater than the
declared value given by the manufacturer. Additionally no individual specimen load shall be less
than 90% of the declared value given by the manufacturer. For asymmetrical straps, where the
ends are tested separately, the strength shall be that of the weaker end.
5.3.8.2 Deflection under load
When measured in accordance with prEN 846-4, the displacement of any individual tension strap at
one third of the declared value of load capacity shall not exceed 1 mm.
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5.4 Resistance to water crossing a cavity
The manufacturer shall declare whether the ties are resistant to water crossing a cavity. Ties for
external cavity walls shall be designed to prevent water from crossing from an external to an
internal leaf.
NOTE This can be achieved by design of the central section (e.g. by the use of a shaped
section of the tie ("drip"), a clip-on device or by the tie sloping downwards fr
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