EN 17468-1:2022

Fibre cement products - Determination of pull through and shear resistance and bending strength calculations - Part 1: Flat sheets

The document establishes an agreed method for evaluation of pull through resistance (tension/compression for fasteners through the sheets), shear resistance, bending strength and bending modulus of elasticity and suggests an approved safety concept of fibre-cement flat sheets for internal and external wall and ceiling finishes based on the experiences obtained over the last number of years in different countries. The results are only applicable to the fibre-cement product and not to the complete fixing assembly.
NOTE 1   For design purposes of fibre-cement flat sheets in the final application, the failure modes pull-out and breaking of the fixing or substructure are not in the scope of this standard. They might become decisive and need to be tested or calculated according to the relevant design standards for fixings (e.g. EN 14592) or ETA and substructure (e.g. Eurocode 3 for steel, Eurocode 5 for wood and Eurocode 9 for aluminium substructures) and compared with the results for pull-through and shear resistance.
The results are also applicable for:
—   Coated or uncoated sheets manufactured at the same production facility as the tested sheets provided that the sheets are of the same type, have at least the same declared class according to EN 12467:2012+A2:2018, Table 6 and at least the same nominal thickness.
—   The test method can be applied to textured or non-textured fibre-cement flat sheets. The results of non-textured sheets are only applicable for textured sheets if the nominal minimum thickness of the textured sheet is at least the nominal thickness of the non-textured sheet.
—   The same type of fixing head or washer assembly where applicable if the diameter of the fixing head or washer is 0 mm to 2 mm larger than in the test.
—   The Shore A hardness of the sealing washer, where applicable, is ± 5 that of the washer used in the test, given that the washer thickness is at least as thick, the washer material at least as strong and the shape (dome or flat) of the washer equal to what has been tested.
NOTE 2   
A)   For pull-through resistance, if the diameter of the drilled hole through the fibre-cement sheet is 0 mm to 2 mm smaller or equal than in the test up to the diameter of the shank of the fastener, providing, during the test there is the required clearance hole around the shank of the fastener.
B)   For shear resistance, if the diameter of the drilled hole is equal to what has been tested.
It applies only to products as delivered.

Faserzementprodukte - Bestimmung des Durchzugs und Abscherwiderstandes und der Biegefestigkeit - Teil 1: Tafeln

Dieses Dokument legt ein vereinbartes Verfahren für die Bewertung des Durchzugswiderstands (Zug/Druck auf Befestigungsmittel durch die Tafeln), des Abscherwiderstands, der Biegefestigkeit und des Elastizitätsmoduls bei Biegung fest und schlägt ein zugelassenes Sicherheitskonzept für Faserzement-Tafeln für Innen- und Außenwand- sowie Deckenbekleidungen auf Grundlage der in den vergangenen Jahren in verschiedenen Ländern gesammelten Erfahrungen vor. Die Ergebnisse sind nur auf das Faserzementprodukt anwendbar, nicht auf die gesamte Befestigungsbaugruppe.
ANMERKUNG 1   Für die Zwecke der Bemessung von Faserzement-Tafeln in der endgültigen Anwendung liegen Auszug und Versagen der Befestigungen oder der Unterkonstruktion als Gründe für das Versagen nicht im Anwendungsbereich dieser Norm. Sie könnten entscheidend werden und müssen nach den relevanten Bemessungsnormen für Befestigungen (zum Beispiel EN 14592) oder ETAs und Unterkonstruktionen (zum Beispiel Eurocode 3 für Stahl-, Eurocode 5 für Holz- und Eurocode 9 für Aluminiumunterkonstruktionen) geprüft oder berechnet und mit den Ergebnissen für den Durchzugs- und Abscherwiderstand verglichen werden.
Die Ergebnisse gelten auch für:
—   beschichtete oder unbeschichtete Tafeln, die in derselben Produktionsstätte hergestellt wurden wie die geprüften Tafeln, sofern die Tafeln vom selben Typ sind sowie mindestens dieselbe angegebene Klasse nach EN 12467:2012+A2:2018, Tabelle 6 und mindestens dieselbe Nenndicke aufweisen.
—   Das Prüfverfahren kann auf strukturierte und nicht-strukturierte Faserzement-Tafeln angewendet werden. Die Ergebnisse für nicht-strukturierte Tafeln gelten nur dann für strukturierte Tafeln, wenn die Nenn-Mindestdicke der strukturierten Tafel mindestens der Nenndicke der nichtstrukturierten Tafel entspricht.
—   Derselbe Typ von Befestigungsköpfen oder Scheibenbaugruppen, falls zutreffend, wenn der Durchmesser des Befestigungskopfes oder der Scheibe 0 mm bis 2 mm größer ist als bei der Prüfung.
—   Die Shore‑A‑Härte der Dichtscheibe, falls zutreffend, entspricht der Shore‑A‑Härte der bei der Prüfung verwendeten Scheibe ± 5, sofern die Dicke der Scheibe die Festigkeit des Scheibenwerkstoffs mindestens der geprüften Dichtscheibe entsprechen und die Form der Scheibe (gewölbte- oder ebene Dichtscheibe) der geprüften Dichtscheibe entspricht.
ANMERKUNG 2
A)   Für den Durchzugswiderstand ist der Durchmesser des Bohrlochs in der Faserzement-Tafel 0 mm bis 2 mm kleiner als bei der Prüfung oder gleich dem bei der Prüfung und höchstens so groß wie der Durchmesser des Schafts des Befestigungsmittels, sofern  der Schaft während der Prüfung das erforderliche Spiel im Loch hat.
B)   Für den Abscherwiderstand entspricht der Durchmesser des Bohrlochs dem Durchmesser bei der Prüfung.
Es gilt nur für Produkte im Auslieferungszustand.

Produits en fibres-ciment - Détermination des calculs de résistance au déboutonnage, au cisaillement et à la flexion - Partie 1 : Plaques planes

Le document établit une méthode approuvée pour l'évaluation de la résistance au déboutonnage (traction/compression des éléments de fixation à travers les plaques), la résistance au cisaillement, la résistance à la flexion et le module d'élasticité. Il suggère également un concept de sécurité approuvé pour les plaques planes en fibres-ciment destinées aux murs intérieurs et extérieurs ainsi qu'aux finitions des plafonds, d'après l'expérience acquise au cours des dernières années dans différents pays. Les résultats ne sont applicables qu'au produit en fibres-ciment, et non à l'assemblage de fixation complet.
NOTE 1   Aux fins de la conception des plaques planes en fibres-ciment pour l'application finale, les ruptures de type « arrachement » et « rupture des fixations ou de la sous-structure » sont exclues du domaine d'application de la présente norme. Elles peuvent devenir décisives et doivent être déterminées par un essai ou calculées selon les normes de conception adéquates pour les fixations (par exemple, EN 14592) ou les ATE et les sous-structures (par exemple, Eurocode 3 pour l'acier, Eurocode 5 pour le bois et Eurocode 9 pour l'aluminium), et comparées aux résultats des essais de résistance au déboutonnage et au cisaillement.
Les résultats sont également applicables dans les cas suivants :
   plaques revêtues et non revêtues fabriquées sur le même site de production que les plaques soumises à l'essai, à condition qu'il s'agisse de plaques du même type, qu'elles soient de la même classe déclarée conformément au Tableau 6 de l'EN 12467:2012+A2:2018, et qu'elles aient au moins la même épaisseur nominale ;
   la méthode d'essai peut être appliquée à des plaques planes en fibres-ciment texturées ou non texturées. Les résultats pour les plaques non texturées ne sont applicables aux plaques texturées que si l'épaisseur nominale minimale de la plaque texturée est au moins égale à l'épaisseur nominale de la plaque non texturée ;
   même type d'assemblage de tête ou de rondelle de fixation (le cas échéant) si le diamètre de la tête ou de la rondelle de fixation est plus grand de 0 mm à 2 mm que dans l'essai ;
   la dureté Shore A de la rondelle d'étanchéité, si applicable, est de ± 5 par rapport à celle de la rondelle utilisée pour l'essai, à condition que l'épaisseur de la rondelle soit au moins égale, la matière de la rondelle au moins aussi résistante et la forme de la rondelle (en dôme ou plate) identique à celles de l'essai.
NOTE 2   
A)   Pour l'essai de résistance au déboutonnage, si le diamètre du trou percé à travers la plaque en fibres-ciment est inférieur de 0 mm à 2 mm ou égal à celui de l'essai jusqu'au diamètre de la tige de l'élément de fixation, sous réserve de la présence du trou de passage requis autour de la tige de l'élément de fixation pendant l'essai.
B)   Pour l'essai de résistance au cisaillement, si le diamètre du trou percé est égal à celui de l'essai.
Le présent document ne s'applique qu'aux produits dans l'état de livraison.

Vlaknatocementni proizvodi - Ugotavljanje vlečne odpornosti in strižne trdnosti ter izračun upogibne trdnosti - 1. del: Ravne plošče

Ta dokument določa preskusno metodo za vlečno odpornost in strižno trdnost vlaknatocementnih ravnih plošč, ki se uporabljajo za prekrivanje streh in oblaganje sten.
Rezultati se uporabljajo tudi za:
–   Prevlečene ali neprevlečene plošče, izdelane v istem proizvodnem obratu kot preskušene plošče.
–   Preskusno metodo je mogoče uporabiti za teksturirane ali neteksturirane vlaknatocementne ravne plošče. Rezultati neteksturiranih plošč so uporabni za teksturirane plošče le, če je nazivna najmanjša debelina teksturirane plošče vsaj nazivna debelina neteksturirane plošče.
–   Isto vrsto pritrdilne glave ali sklopa podložke, kjer je primerno, če je premer pritrdilne glave ali podložke od 0 do 2 mm večji kot pri preskusu.
–   Trdota po Shore A tesnilne podložke, kjer je primerno, je ± 5 trdote podložke, uporabljene v preskusu.
–   Premer izvrtane luknje skozi vlaknatocementno ploščo je od 0 do 2 mm manjši kot pri preskusu, pod pogojem, da je okoli stebla pritrdilnega elementa zahtevana zračna luknja.
Dokument se uporablja le za proizvode, kot so dobavljeni.

General Information

• Status: Published
• Publication Date: 26-Apr-2022
• Withdrawal Date: 30-Oct-2022
• ICS: 91.100.40 - Products in fibre-reinforced cement
• Technical Committee: CEN/TC 128 - Roof covering products for discontinuous laying and products for wall cladding
• Drafting Committee: CEN/TC 128/SC 4/WG 3 - Fibre cement flat sheets
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 27-Apr-2022
• Due Date: 11-Nov-2021
• Completion Date: 27-Apr-2022
• Ref Project: SIST EN 17468-1:2022 - Fibre cement products - Determination of pull through and shear resistance and bending strength calculations - Part 1: Flat sheets

Overview

EN 17468-1:2022 - published by CEN - is the European test standard for fibre‑cement flat sheets. It defines an agreed method to determine pull‑through resistance, shear resistance, bending strength and bending modulus of elasticity, and it proposes a safety concept for fibre‑cement flat sheets used as internal and external wall and ceiling finishes. The standard is a testing procedure for the product as delivered; it does not cover the complete fixing assembly or fixing pull‑out/breakage of substructure.

Key topics and technical requirements

• Scope and applicability: Tests apply to coated/uncoated and textured/non‑textured fibre‑cement flat sheets produced at the same facility, provided declared class (EN 12467) and nominal thickness criteria are met.
• Test methods: Prescribed procedures for pull‑through (tension/compression through the sheet) and shear resistance tests, plus bending strength calculations and modulus of elasticity.
• Sampling & specimen preparation:
  • Pull‑through: 10 specimens, cut to (400 ± 5) mm × (400 ± 5) mm.
  • Shear: 10 specimens, cut to (250 ± 5) mm × (250 ± 5) mm.
  • Conditioning at 23 ± 5 °C and 50 ± 20 % RH until mass equilibrium (mass change < 0.1 % over 24 h).
  • Pre‑drilling using manufacturer‑specified drill diameter or use of self‑drilling screws as specified.
• Result expression and design values: Includes rules/equations to calculate characteristic bending strength compatible with the Eurocode safety concept and guidance for deriving design pull‑through and shear values.
• Limitations and transferability:
  • Results relate only to the fibre‑cement product, not the fixing or substructure.
  • Transfer conditions for washer diameter, sealing washer Shore A hardness, hole diameters and textured vs non‑textured sheets are explicitly stated (e.g., ±2 mm head/washer diameter, ±5 Shore A hardness).

Practical applications

• Product type testing and quality control for manufacturers of fibre‑cement flat sheets.
• Input data for structural designers and engineers when assessing sheet performance under fasteners (tension/compression and shear).
• Evidence for regulatory bodies and certification schemes when establishing product safety classes for wall and ceiling finishes.
• Laboratory test houses applying consistent methods to compare products and produce design values.

Who should use this standard

• Fibre‑cement product manufacturers and R&D teams
• Test laboratories and conformity assessment bodies
• Architects, façade and cladding specifiers
• Structural engineers and installers verifying product behavior under fasteners
• Regulators and standards committees

Related standards

• EN 12467:2012+A2:2018 (product specification & test methods for fibre‑cement)
• EN 1990 (Eurocode - basis of structural design)
• EN ISO 7500‑1 (calibration/verification of testing machines)
• EN 14592 and relevant Eurocodes for fixings/substructures (for complete assembly design)

Keywords: EN 17468-1:2022, fibre‑cement flat sheets, pull‑through resistance, shear resistance, bending strength, CEN, EN 12467, test method, product testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2022
Vlaknatocementni proizvodi - Ugotavljanje vlečne odpornosti in strižne trdnosti ter
izračun upogibne trdnosti - 1. del: Ravne plošče
Fibre cement products - Determination of pull through and shear resistance and bending
strength calculations - Part 1: Flat sheets
Faserzementprodukte - Bestimmung des Durchzugs- und Querkraftwiderstandes und
der Biegefestigkeit - Teil 1: Tafeln
Produits en fibres-ciment - Détermination des calculs de résistance à la traversée de la
tête, au cisaillement et à la flexion - Partie 1 : Plaques planes
Ta slovenski standard je istoveten z: EN 17468-1:2022
ICS:
91.060.20 Strehe Roofs
91.100.40 Cementni izdelki, ojačani z Products in fibre-reinforced
vlakni cement
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17468-1
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2022
EUROPÄISCHE NORM
ICS 91.100.40
English Version
Fibre cement products - Determination of pull through and
shear resistance and bending strength calculations - Part
1: Flat sheets
Produits en fibres-ciment - Détermination des calculs Faserzementprodukte - Bestimmung des Durchzugs-
de résistance au déboutonnage, au cisaillement et à la und Querkraftwiderstandes und der Biegefestigkeit -
flexion - Partie 1 : Plaques planes Teil 1: Tafeln
This European Standard was approved by CEN on 13 March 2022.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17468-1:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols and abbreviations . 6
5 Product requirements . 7
5.1 Composition . 7
5.2 Appearance and finish . 7
6 Sampling procedure . 7
6.1 Sampling method . 7
6.2 Type testing . 8
6.3 Preparation of test specimens . 8
7 Test method for the determination of pull through resistance . 9
7.1 Principle . 9
7.2 Tensile testing machine . 9
7.3 Fasteners . 12
7.4 Test procedure . 12
7.5 Expression of results and test report . 12
7.5.1 Pull through resistance . 12
7.5.2 Test report . 13
8 Test method for the determination of shear resistance . 14
8.1 Principle . 14
8.2 Test equipment . 14
8.3 Fasteners . 15
8.4 Test procedure . 16
8.5 Expression of results and test report . 16
8.5.1 Shear resistance . 16
8.5.2 Test report . 17
9 Mechanical characteristics . 17
9.1 Bending strength . 17
9.1.1 General. 17
9.1.2 Characteristic bending strength . 18
9.1.3 Design bending strength . 20
9.2 Design pull through resistance / shear resistance . 20
Bibliography . 21
European foreword
This document (EN 17468-1:2022) has been prepared by Technical Committee CEN/TC 128 “Roof
covering products for discontinuous laying and products for wall cladding”, the secretariat of which is
held by NBN.
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 2022, and conflicting national standards shall
be withdrawn at the latest by October 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document also proposes rules and equations to calculate characteristic bending strength to fit into
the safety concept of the Eurocode.
This document is Part 1, dealing with flat sheets, whereas Part 2 deals with profiled sheets.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
Different fibre-cement flat sheets on the market are assessed for pull through resistance.
Fibre-cement flat sheets have been evaluated, for pull through resistance, by a number of test methods
designed to simulate conditions of use.
The results from the different existing methods are not directly comparable.
This document establishes an agreed method for evaluation of the pull through resistance and shear
resistance of fibre-cement flat sheet products, based on the experiences obtained over the last number of
years in different countries.
This is a testing standard with no classifications, but this test procedure may be used by national
regulators to set classifications for roof and wall assemblies.
The performance of an assembly constructed with these products depends not only on the properties of
product as required by this document, but also on the design, construction and performance of the
assembly.
1 Scope
The document establishes an agreed method for evaluation of pull through resistance
(tension/compression for fasteners through the sheets), shear resistance, bending strength and bending
modulus of elasticity and suggests an approved safety concept of fibre-cement flat sheets for internal and
external wall and ceiling finishes based on the experiences obtained over the last number of years in
different countries. The results are only applicable to the fibre-cement product and not to the complete
fixing assembly.
NOTE 1 For design purposes of fibre-cement flat sheets in the final application, the failure modes pull-out and
breaking of the fixing or substructure are not in the scope of this standard. They might become decisive and need
to be tested or calculated according to the relevant design standards for fixings (e.g. EN 14592) or ETA and
substructure (e.g. Eurocode 3 for steel, Eurocode 5 for wood and Eurocode 9 for aluminium substructures) and
compared with the results for pull-through and shear resistance.
The results are also applicable for:
— Coated or uncoated sheets manufactured at the same production facility as the tested sheets
provided that the sheets are of the same type, have at least the same declared class according to
EN 12467:2012+A2:2018, Table 6 and at least the same nominal thickness.
— The test method can be applied to textured or non-textured fibre-cement flat sheets. The results of
non-textured sheets are only applicable for textured sheets if the nominal minimum thickness of the
textured sheet is at least the nominal thickness of the non-textured sheet.
— The same type of fixing head or washer assembly where applicable if the diameter of the fixing head
or washer is 0 mm to 2 mm larger than in the test.
— The Shore A hardness of the sealing washer, where applicable, is ± 5 that of the washer used in the
test, given that the washer thickness is at least as thick, the washer material at least as strong and the
shape (dome or flat) of the washer equal to what has been tested.
NOTE 2
A) For pull-through resistance, if the diameter of the drilled hole through the fibre-cement sheet is 0 mm
to 2 mm smaller or equal than in the test up to the diameter of the shank of the fastener, providing, during the test
there is the required clearance hole around the shank of the fastener.
B) For shear resistance, if the diameter of the drilled hole is equal to what has been tested.
It applies only to products as delivered.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 12467:2012+A2:2018, Fibre-cement flat sheets - Product specification and test methods
EN 1990, Eurocode - Basis of structural design
EN ISO 7500-1, Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1:
Tension/compression testing machines - Calibration and verification of the force-measuring system (ISO
7500-1)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
type test
test carried out to demonstrate conformity with the requirements of this document or for approval of a
new product and/or when a fundamental change is made in formulation and/or method of manufacture,
the effects of which cannot be predicted on the basis of previous experience
Note 1 to entry: The test is performed on the delivered product, but is not required for each batch.
3.2
as delivered
same condition as the fibre-cement producer intends to supply the product after completing all aspects
of the process including maturing and, when appropriate, painting
3.3
span
distance between the parallel support axes
4 Symbols and abbreviations
For the purpose of this document, the following symbols and abbreviations apply.
a deformation
b width of test piece, in millimetres
d diameter of the fastener or fastener assembly (washer)
H
d diameter of the supporting ring
support
e thickness of the sheet, in millimetres
e nominal thickness of the sheet according to EN 12467
nom
e average thickness of a sheet
m
F force, in newtons (load)
F elastic bending load, in newtons
el
F load pull through, in the axis of the fastener
ax
F breaking load shear, in newtons
v
characteristic bending strength
fk
f 5 % quantile with 75 % confidence level of the bending strength for the condition as tested
k05
f average bending strength
m
f average elastic bending strength
el m
k statistic factor according to EN 1990
κ conversion factor for fibre-cement products or test results that need to be applied to results
wet
tested in “dry conditions” as specified in EN 12467 and shall be valid for environmental

applications, where fibre-cement can become totally water soaked (e.g. façade or roof
application)
l span between supports, in millimetres
s
l the minimum edge distance longitudinal to the direction of the production
min,long
l the minimum edge distance perpendicular to the direction of the production
min,perp
n number of samples
R characteristic force
R characteristic pull through resistance
k,ax
R characteristic shear resistance
k,v
R design value pull through resistance
d,ax
R design value shear resistance
d,v
κ “kappa” factor for reducing the bending strength climatic (23 °C, 50 % RH.) to wet condition
wet
α multiplication of ageing factors, product R
i
s estimate of the standard deviation
γ confidence level (%)
γM partial safety factor for a component property under consideration of model uncertainties and
size deviations
R mean quotient of the modulus of rupture of exposed and unexposed specimen, where “ ” shall
i i
stand for testing 1 freeze–thaw, 2 soak-dry and 3 warm-water according to EN 12467
R mean quotient of the modulus of rupture of exposed and unexposed specimen at 95 %
L,i
confidence level as defined in EN 12467, where “ ” shall stand for testing: 1 freeze–thaw, 2
i
soak-dry and 3 warm-water according to EN 12467
5 Product requirements
5.1 Composition
Fibre-cement flat sheets shall have a composition according to EN 12467.
5.2 Appearance and finish
The appearance and finish shall be evaluated as defined in EN 12467.
6 Sampling procedure
6.1 Sampling method
Take an adequate number of full size sheets (minimum 10) drawn at random from a consignment of
sheets or, in the case of continuous production, from a production batch. All test specimens used on the
test assembly shall be from the same consignment or production batch. The size of the batch is chosen by
the manufacturer up to a maximum of one week’s production.
6.2 Type testing
The pull through resistance and shear resistance tests are type tests.
6.3 Preparation of test specimens
— Cut 10 samples from 10 different flat sheets to (400 ± 5) mm × (400 ± 5) mm for the pull through
tests.
— Cut 10 samples from 10 different flat sheets to (250 ± 5) mm × (250 ± 5) mm for the shear tests.
— The specimens shall be stored under normal climatic conditions of 23 ± 5 °C and a relative air
humidity of 50 ± 20 % RH (23/50) until equilibrium of mass. The equilibrium of mass under climate
at 23 °C and 50 % RH is reached if the mass has a lower difference than 0,1 % in weighting with an
interval of 24 h. As EN 12467:2012+A2:2018, 3.10.
— The sheets shall be pre-drilled using a drill bit of nominal diameter as specified by the manufacturer.
Self-drilling screws of a nominal diameter/size can also be used as specified by the manufacturer.
For sheets category A and B (EN 12467), the specimens for pull through resistance and shear
resistance should be stored prior to the test between 7 and 14 days in ambient laboratory conditions
followed by 24 h immersion in water for sheets with thickness ≤ 20 mm or 48 h for sheets with
thickness > 20 mm.
— The specimens shall be tested immediately upon removal from the water. For sheets category C and
D (EN 12467), the specimens for pull through resistance and shear resistance should be stored prior
to the test between 7 and 14 days in ambient laboratory conditions and relevant cases shall be tested
immediately upon removal from the conditioning room.
— The conditioning described above is the normal conditioning. It is the same as the conditioning for
type testing of bending strength depending the category in accordance with EN 12467. For sheets
category A and B (EN 12467) the specimens for pull through resistance and shear resistance may be
tested similar to category C and D provided that for design appropriate correc
...