SIST EN 771-5:2011+A1:2015

SLOVENSKI STANDARD
01-oktober-2015
1DGRPHãþD
SIST EN 771-5:2011
Specifikacija za zidake - 5. del: Zidaki iz umetnega kamna
Specification for masonry units - Part 5: Manufactured stone masonry units
Festlegungen für Mauersteine - Teil 5: Betonwerksteine
Spécifications pour éléments de maçonnerie - Partie 5: Eléments de maçonnerie en
pierre reconstituée
Ta slovenski standard je istoveten z: EN 771-5:2011+A1:2015
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 771-5:2011+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2015
ICS 91.100.30 Supersedes EN 771-5:2011
English Version
Specification for masonry units - Part 5: Manufactured stone
masonry units
Spécifications pour éléments de maçonnerie - Partie 5: Festlegungen für Mauersteine - Teil 5: Betonwerksteine
Eléments de maçonnerie en pierre reconstituée
This European Standard was approved by CEN on 17 March 2011 and includes Amendment 1 approved by CEN on 11 January 2015.

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

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 771-5:2011+A1:2015 E
worldwide for CEN national Members.

Contents Page
European foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Materials .8
5 Requirements for manufactured stone masonry units .8
5.1 General .8
5.2 Dimensions and tolerances .8
5.2.1 Dimensions .8
5.2.2 Dimensional tolerances .9
5.3 Configuration and appearance . 10
5.3.1 General . 10
5.3.2 Configuration . 10
5.3.3 Surface appearance . 10
5.3.4 Flatness of surfaces . 10
5.4 Density . 11
5.5 Compressive strength . 11
5.5.1 Declared value . 11
5.5.2 Minimum value . 12
5.6 Thermal properties . 12
5.7 Durability . 12
5.8 Water absorption by capillarity . 12
5.8.1 Declared value . 12
5.8.2 Maximum value . 13
5.9 Moisture movement . 13
5.10 Water vapour permeability . 13
5.11 Reaction to fire . 13
5.12 Shear bond strength . 13
5.12.1 General . 13
5.12.2 Declaration based on fixed values . 13
5.12.3 Declaration based on tests . 13
5.13 Flexural bond strength . 14
5.14 Dangerous substances . 14
6 Description, designation and classification of manufactured stone masonry units . 14
6.1 Description and designation . 14
6.2 Classification . 15
7 Marking . 15
8 !Assessment and verification of constancy of performance (AVCP)" . 15
8.1 General . 15
8.2 !Product type determination" . 15
8.3 Factory production control . 17
8.3.1 General . 17
8.3.2 Testing and measuring equipment . 17
8.3.3 Production equipment . 17
8.3.4 Raw materials . 17
8.3.5 Production process . 17
8.3.6 Finished product testing . 17
8.3.7 Statistical techniques . 18
8.3.8 Marking and stock control of products . 18
8.3.9 Traceability . 18
8.4 Nonconforming products . 18
Annex A (normative) !Sampling for determination of product type and for independent testing

of consignments" . 19
A.1 General . 19
A.2 Sampling procedure . 19
A.2.1 General . 19
A.2.2 Random sampling . 19
A.2.3 Representative sampling . 19
A.2.4 Dividing the sample . 20
A.2.5 Number of units required for testing . 20
Annex B (normative) Normalised compressive strength . 21
Annex C (informative) Guidance for test frequencies for designing a FPC system to demonstrate
conformity of finished products with the requirements of the standard and the

declaration of the manufacturer . 22
Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the

EU Construction Products Regulation" . 24
ZA.1 Scope and relevant characteristics . 24
ZA.2 Procedure(s) for AVCP of manufactured stone masonry units . 25
ZA.2.1 System(s) of AVCP . 25
ZA.2.2 Declaration of performance (DoP) . 27
ZA.3 CE marking and labelling. 32
Bibliography . 35

European foreword
This document (EN 771-5:2011+A1:2015) 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 February 2016, and conflicting national standards shall be withdrawn
at the latest by May 2017.
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 supersedes !EN 771-5:2011".
This document includes Amendment 1 approved by CEN on 2015-01-11.
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
!This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association and supports basic requirements for construction works of the EU
Construction Products Regulation (Regulation (EU) No 305/2011).
For relationship with EU Regulation/Directive(s), see informative Annex ZA, which is an integral part of this
document."
This European Standard also takes into account the general rules for unreinforced and reinforced masonry in
Eurocode 6.
EN 771, Specification for masonry units consists of:
— Part 1: Clay masonry units
— Part 2: Calcium silicate masonry units
— Part 3: Aggregate concrete masonry units (Dense and light weight aggregates)
— Part 4: Autoclaved aerated concrete masonry units
— Part 5: Manufactured stone masonry units
— Part 6: Natural stone masonry units
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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.
1 Scope
This European Standard specifies the characteristics and performance requirements of manufactured stone
masonry units for which the main intended uses are facing or exposed masonry in load bearing or non-load
bearing building and civil engineering applications. The units are suitable for all forms of coursed or random
masonry walling, including single leaf, cavity, partition, retaining and the external masonry to chimneys. They
can provide fire protection, thermal insulation, sound insulation and sound absorption.
This standard covers concrete masonry units manufactured to resemble natural stone using casting or
pressing techniques with or without textured surfaces produced, by casting, splitting, washing, blasting or
tooling and with or without variable outline effects. It covers homogeneous masonry units and those consisting
of different facing and backing concrete mixes, but excludes those manufactured with an adhesive bonded
decorative face. This standard does not cover masonry units intended to conform to EN 771-3.
It defines the performance related to e.g. strength, density, dimensional accuracy, surface appearance and
provides for the !assessment and verification of constancy of performance (AVCP)" of the product to this
European Standard. The marking requirements for products covered by this European Standard are also
included.
This European Standard does not apply to storey height panels, masonry units used for chimney flues or units
manufactured with an adhesive bonded decorative face. It does not include products intended to be used as a
damp proof course nor does it specify standard sizes for manufactured stone masonry units or work
dimensions and angles of specially shaped units. It does not cover units with an incorporated thermal
insulation material bonded to the faces of the unit susceptible to be exposed to fire.
2 Normative references
The following referenced documents are indispensable for the application 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 772-1, Methods of test for masonry units ― Part 1: Determination of compressive strength
EN 772-11, Methods of test for masonry units ― Part 11: Determination of water absorption of aggregate
concrete, autoclaved aerated concrete, manufactured stone and natural stone masonry units due to capillary
action and the initial rate of water absorption of clay masonry units
EN 772-13, Methods of test for masonry units ― Part 13: Determination of net and gross dry density of
masonry units (except for natural stone)
EN 772-14, Methods of test for masonry units ― Part 14: Determination of moisture movement of aggregate
concrete and manufactured stone masonry units
EN 772-16:2011, Methods of test for masonry units ― Part 16: Determination of dimensions
EN 772-20, Methods of test for masonry units ― Part 20: Determination of flatness of faces of aggregate
concrete, manufactured stone and natural stone masonry units
EN 1052-2, Methods of test for masonry ― Part 2: Determination of flexural strength
EN 1052-3, Methods of test for masonry ― Part 3: Determination of initial shear strength
EN 1745, Masonry and masonry products ― Methods for determining thermal properties
EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using
data from reaction to fire tests
EN ISO 12572, Hygrothermal performance of building materials and products ― Determination of water
vapour transmission properties (ISO 12572:2001)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
masonry unit
preformed component intended for use in masonry construction
3.2
facing masonry unit
masonry unit intended for use with one or more faces visible in use which may or may not be exposed
3.3
exposed face
face intended to be exposed to external climatic conditions
3.4
manufactured stone masonry unit
facing masonry unit having at least one exposed face with a close structure formed from either one or two
homogeneous mixtures of aggregate, cementitious binder and other materials moulded under pressure and/or
vibration and with or without further processing, intended to resemble and be used as an alternative to natural
stone
3.5
two-part masonry unit
masonry unit manufactured with different facing and backing concretes
3.6
co-ordinating size
size of the co-ordinating space allocated to a masonry unit including an allowance for joints
3.7
work size
size of a masonry unit specified for its manufacture to which the actual size conforms within permissible
deviations
3.8
actual size
size of a masonry unit as measured
3.9
regular shaped masonry unit
masonry unit with an overall rectangular parallelepiped shape
3.10
specially shaped masonry unit
masonry unit which is not a rectangular parallelepiped
3.11
accessory unit
masonry unit which is shaped to provide a particular function, e.g. to complete the geometry of the masonry
3.12
interlocking features
shaped, matched projections and indentations on masonry units
EXAMPLE Tongue and groove systems.
3.13
recess
depression or indentation in one or more surfaces of a masonry unit
EXAMPLE Mortar pocket, rendering keyway.
3.14
normalised compressive strength of masonry units
compressive strength of masonry units converted to the air dry compressive strength of an equivalent 100 mm
wide × 100 mm high masonry unit
NOTE See procedure given in Annex B of this standard.
3.15
declared value
value that a manufacturer is confident of achieving bearing in mind the precision of the test and the variability
of the manufacturing process
3.16
profiled surface
surface with pronounced relief
3.17
textured surface
surface which, either during or after manufacture, is subjected to mechanical, physical or chemical processing
3.18
Category I masonry units
units with a declared compressive strength with a probability of failure to reach it not exceeding 5 %
NOTE This can be determined via the mean or characteristic value.
3.19
Category II masonry units
units not intended to comply with the level of confidence of Category I units
3.20
mean compressive strength of masonry units
arithmetic mean of the compressive strengths of masonry units
3.21
characteristic compressive strength of masonry units
compressive strength corresponding to the 5 % fractile of the compressive strength of masonry units
3.22
consignment
shipment from the supplier
3.23
product group
products from one manufacturer having common values for one or more characteristic
4 Materials
The specifications of the materials to be used shall be included in the production control documentation. If
appropriate European Standards are available, they shall be used except that aggregate need not comply with
the grading requirements. If not available, the manufacturer shall specify the materials and have data on their
suitability.
5 Requirements for manufactured stone masonry units
5.1 General
The requirements and properties specified in this European Standard shall be defined in terms of the test
methods and other procedures referred to in this European Standard.
It should be noted that the standard test methods are not always applicable to specially shaped masonry units
and accessory units as defined in 3.10 and 3.11 respectively.
The conformity criteria given in the following subclauses relate to !product type determination" (see 8.2)
and when relevant to consignment testing (see Annex A). For the compressive strength of Category I units
use a 50 % fractile (p = 0,50) for mean values or 5 % fractile (p = 0,05) for characteristic values and a
confidence level of 95 %.
For production evaluation the manufacturer shall define the conformity criteria in the factory production control
documentation (see 8.3).
5.2 Dimensions and tolerances
5.2.1 Dimensions
The manufacturer shall declare the dimensions of the manufactured stone masonry units in millimetres for
length, width and height, in that order (see Figure 1), and shall declare the tolerance category (see 5.2.2.1).
Dimensions in millimetres
Key
1 Length 3 Height 5 Face
2 Width 4 Bed 6 Header
NOTE This relates to the normal use of the masonry units in the wall.
Figure 1 — Dimensions and surfaces
They shall be given in terms of work size.
NOTE In addition the co-ordinating size can be given.
They shall not exceed 650 mm in any co-ordinating dimension excluding the thickness of any profile on a non-
planar face.
5.2.2 Dimensional tolerances
5.2.2.1 Tolerances
The actual dimensions of individual regular units shall conform to the declared work size dimensions subject
to the tolerance given in Table 1, except where surfaces are deliberately non-planar, in which case the
manufacturer shall declare the tolerances. The manufacturer may declare closer tolerances for one or more
dimensions.
Table 1 — Limit deviations in millimetres
Tolerance category D1 D2 D3
+3 +1
Length
−5 −3
+3 +1
Width Declared values
−5 −3
+3 +1
Height
−5 −3
Tolerances for specially shaped and accessory units shall be declared by the manufacturer.
If sampled in accordance with A.2 and tested in accordance with EN 772-16, the mean value of the
measurements taken of any one dimension of a single unit shall not vary from the manufacturer's work size by
more than the tolerances given above for the declared tolerance category.
5.2.2.2 Flatness of bed faces
When manufactured stone masonry units are intended to be used with thin layer mortar, the manufacturer
shall declare the maximum deviation from flatness of the bed faces.
If sampled in accordance with A.2 and tested in accordance with EN 772-20, the deviation from flatness of the
bed faces shall not exceed the declared value.
5.2.2.3 Parallelism of bed faces
When manufactured stone masonry units are intended to be used with thin layer mortar, the manufacturer
shall also declare the maximum deviation from plane parallelism of the bed faces.
If sampled in accordance with A.2 and tested in accordance with EN 772-16:2011 Method d), the deviation
from plane parallelism shall not exceed the declared value.
5.3 Configuration and appearance
5.3.1 General
Units may be homogenous or two-part, but, in the case of two-part masonry units, the facing mix shall have a
thickness of not less than 20 mm. There shall be no delamination between the facing and the backing
concretes.
5.3.2 Configuration
When relevant to the uses for which manufactured stone masonry units are put on the market, the
configuration shall be declared, including the maximum area of voids on a bed face as a percentage of the
length × width of the unit. The declaration may be made using a drawing or an illustration.
Units intended for use in structural applications shall contain not more than 60 % by volume of all formed
voids and may be provided with or without recesses or interlocking features. Such units containing not more
than 25 % by volume of formed voids and having no single void greater than 12,5 % of the total volume of the
unit may be declared as Group 1 masonry units, in accordance with the requirements of EN 1996-1-1.
When conformity with the declared configuration cannot be assessed by visual inspection, masonry units shall
be sampled in accordance with A.2, measured in accordance with EN 772-16 and the values calculated.
5.3.3 Surface appearance
The exposed surfaces of manufactured stone masonry units shall be plain, profiled or textured as declared by
the manufacturer. Compliance of textured or profiled surfaces may be established on the basis of comparison
with any approved samples. Comparison shall be made from a distance of
3 m in normal daylight conditions.
5.3.4 Flatness of surfaces
Where the surfaces of the unit are declared by the manufacturer to be plain (see 5.3.3), they shall not deviate
L
d
from a plane by more than (0,1 ) mm or 2 mm whichever is the greater, where Ld is the length of the
diagonal of the surface declared plain. If sampled in accordance with A.2 and tested in accordance with
EN 772-20, no individual measurement of the deviation from a plane shall exceed the value given above.
5.4 Density
When relevant to the uses for which the unit is put on the market, and in all cases for masonry units intended
to be used in elements subject to acoustic requirements, the manufacturer shall declare its gross dry density.
For two-part units the net dry density of each part shall be declared.
NOTE This declaration can be made for the evaluation of:
— loading;
— sound insulation;
— thermal insulation;
— fire resistance.
The deviation from the manufacturer’s declared mean gross dry density and mean net dry density shall not be
more than 7,5 %.
For the gross dry density of homogeneous units and of two-part units, whole units or representative samples
shall be used. For the net dry density of the constituent concretes of two-part units samples of the unformed
mix may be taken and moulded in a manner to obtain a level of compaction similar to that attained in the units.
If sampled in accordance with A.2 and tested in accordance with EN 772-13, the mean value of the dry
density (gross or net) of the six units tested shall be within 7,5 % of the manufacturer's declared value.
5.5 Compressive strength
5.5.1 Declared value
The normalised strength of the manufactured stone masonry units in compression shall be declared by the
manufacturer (declared value — for definition see 3.15). Either the mean or the characteristic (5 % fractile)
value may be declared but it shall be clearly stated which has been declared. The declaration shall relate to
and indicate the intended orientation(s) of the masonry units as tested, the method(s) of bedding the units and
whether any voids present are intended to be fully filled with mortar. In addition the manufacturer shall declare
whether the manufactured stone masonry unit is classified as Category I or Category II (see ZA.2).
The manufacturer shall declare the conditioning regime and the surface preparation to be used in establishing
compliance with the declared compressive strength of the units !deleted text".
The procedure for normalising the compressive strength of a unit is given in Annex B.
The compressive strength shall be determined by testing either whole masonry units or cubes of dimension
100 mm or 150 mm. Cubes may be cut from a unit or may be prepared from samples of the unformed mix
moulded in a manner to obtain a level of compaction similar to that attained in the unit.
If sampled in accordance with A.2 and tested in accordance with EN 772-1, then:
— Conformity with the declared Mean Value of the normalised compressive strength shall be met if the
mean of the normalised compressive strengths of the six units tested is not less than the manufacturer's
declared value and no individual normalised compressive strength is less than 0,8 × the declared value;
— Conformity with the declared Characteristic Value of the normalised compressive strength shall be met if
the individual normalised compressive strengths of the first six units tested are not less than the declared
value except that if only one of the tested units is less than the declared value but not less than 0,9 × the
declared value, the remaining 6 units shall be tested and all of the individual normalised compressive
strengths of the six units shall be not less than the declared value.
5.5.2 Minimum value
The minimum strength of manufactured stone masonry units meeting the requirements of this standard shall
be as given in Table 2.
a
Table 2 — Normalised compressive strength of manufactured stone masonry units
Type of masonry unit Mean compressive strength Characteristic compressive strength
2 2
N/mm N/mm
Homogeneous 20 17,5
Two-part:
facing mix 20 17,5
backing mix 15 13
NOTE 1 The compressive strength values in this table are based on durability and other considerations.
NOTE 2 When the compressive strength of two-part units is required to establish the strength of walls in accordance
with design codes, only results obtained from testing whole masonry units should be used.
a
For the normalised compressive strength, see Annex B.
5.6 Thermal properties
When relevant to the uses for which the unit is put on the market and in all cases for masonry units intended
to be used in elements subject to thermal insulation requirements, the manufacturer shall provide the mean
λ -value and the determination model as prescribed in EN 1745, or alternatively the unit density and
10,dry,unit
configuration.
Additionally another fractile may be provided. In such cases both the additional fractile and the corresponding
λ -value shall be given.
10,dry,unit
When manufactured stone masonry units are sampled in accordance with Annex A and tested in accordance
with EN 1745 following the model provided, the λ-value of the specified number of manufactured stone
masonry units shall not be greater than the λ-value provided.
When relevant to the uses for which units are put on the market, the value of specific heat capacity given in
EN 1745 may be provided.
5.7 Durability
When relevant to the uses for which the units are put on the market the manufacturer shall evaluate and
declare the freeze/thaw resistance of the units by reference to the provisions valid in the intended place of use
of the units until an appropriate European Standard is available.
5.8 Water absorption by capillarity
5.8.1 Declared value
The manufacturer shall declare the water absorption due to capillary action of the exposed face of a
manufactured stone masonry unit. Units shall be sampled in accordance with A.2 and tested in accordance
with EN 772-11 with an immersion time of (10 ± 0,2) min.
5.8.2 Maximum value
The water absorption due to capillary action of the exposed face of a unit shall not exceed 9,0 g/m s.
5.9 Moisture movement
When relevant to the uses for which the unit is put on the market, and in all cases for masonry units intended
to be used in elements subject to structural requirements, the moisture movement of manufactured stone
masonry units shall be declared by the manufacturer. When sampled in accordance with A.2 and tested in
accordance with EN 772-14, the mean value of the moisture movement shall not exceed the manufacturer’s
declared value.
5.10 Water vapour permeability
When relevant to the uses for which the unit is put on the market, the manufacturer shall provide information
on the water vapour permeability through the water vapour diffusion coefficient tabulated values given in
EN 1745, or determined in accordance with EN ISO 12572.
5.11 Reaction to fire
For units intended to be used in elements subject to fire requirements the manufacturer shall declare the
reaction to fire classification of the masonry unit.
For masonry units containing a mass or volume fraction of ≤ 1,0 % (whichever is the most onerous) of
homogeneously distributed organic materials, the declaration may be fire Class A1 without the need to test.
Masonry units containing a mass or volume fraction of > 1,0 % (whichever is the most onerous) of
homogeneously distributed organic materials shall be classified in accordance with EN 13501-1 and the
appropriate reaction to fire class declared.
NOTE Attention is drawn to the Commission Decision 96/603/EC, amended by Commission Decision 2000/605/EC,
in which non-combustible masonry units containing not more than a mass or volume fraction of 1,0 % (whichever is the
more onerous) of homogeneously distributed organic materials are classified as reaction to fire Class A1 without testing.
5.12 Shear bond strength
5.12.1 General
For manufactured stone masonry units intended to be used in elements subjected to structural requirements
the shear bond strength of the unit in combination with mortar shall be declared in terms of the characteristic
initial shear strength in accordance with EN 1052-3. The declaration may be made either on the basis of fixed
values as in 5.12.2 or tests as in 5.12.3. The manufacturer shall declare whether the value of bond strength
has been obtained from the fixed values or from test.
NOTE In most cases it is expected that the use of fixed values will be sufficient.
5.12.2 Declaration based on fixed values
When no declaration is made in accordance with 5.12.3, the characteristic initial shear strength of the unit in
combination with mortar may be declared by reference to EN 998-2:2010, Annex C.
5.12.3 Declaration based on tests
The characteristic initial shear strength of the unit in combination with one or more specific mortars in
accordance with EN 998-2 may be declared based on tests on masonry units sampled in accordance with
Annex A and tested in accordance with EN 1052-3. The characteristic initial shear strength shall not be less
than the declared value.
NOTE Bond strength depends on the mortar, the masonry unit and the workmanship.
5.13 Flexural bond strength
When relevant for the intended place of use and the intended application, the flexural bond strength of units
and mortar shall be declared. The declaration shall give the characteristic flexural strength of the masonry
either in the plane of failure perpendicular to the bed joints or the plane of failure parallel to the bed joints or
both, as relevant together with the mortar specification for which the declaration is valid.
When manufactured stone masonry units are sampled in accordance with Annex A and tested in accordance
with EN 1052-2, the characteristic flexural strength shall not be less than the value declared.
!
5.14 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 of 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 dangerous substances is available at
the Construction web site on EUROPA accessed through: http://ec.europa.eu/enterprise/construction/cpd-ds/."
6 Description, designation and classification of manufactured stone masonry units
6.1 Description and designation
The description and designation of a manufactured stone masonry unit shall comprise at least the following:
a) the number, title and date of issue of this European Standard;
b) work size dimensions and tolerance category (see 5.2);
c) configuration, shape and features including whether homogeneous or two-part, description of surface and
if units are Group 1 (see 5.3);
d) normalized compressive strength of unit or materials and whether mean or characteristic value (see 5.5);
When relevant to the uses for which the unit is put on the market, the description and designation shall
include:
e) mean gross dry density (see 5.4);
f) mean net dry density (of each concrete for two-part units) (see 5.4);
g) moisture movement (see 5.9);
h) thermal properties (see 5.6);
i) durability (see 5.7).
6.2 Classification
Specification of the properties of manufactured stone masonry units may be given by reference to
classification systems provided those systems are based only on single properties included in this standard
and do not themselves constitute a barrier to trade.
This does not remove the requirement that all manufacturers claiming compliance with this standard shall
state declared values of the properties of their products, when required.
7 Marking
The following particulars shall be clearly marked on one of the following: the packaging, the delivery note, any
certificate supplied with the masonry units, or 5 % of the units with a maximum of 4 per pack:
a) the name, trademark or other means of identification of the manufacturer;
b) a means of identifying the date of manufacture;
c) means of identifying the masonry units and relating them to their description and designation.
NOTE For CE-marking and labelling, ZA.3 applies. Where ZA.3 requires the CE-marking to be accompanied by the
same information as required by this clause, the requirements of this clause can be considered to have been met.
8 !Assessment and verification of constancy of performance (AVCP)"
8.1 General
The manufacturer shall demonstrate compliance for his product with the requirements of this European
Standard and with the declared !performance" for the product properties by carrying out both:
— !product type determination" (see 8.2), which can be physical testing, calculation, reference to
tabulated values or combinations of these methods;
— factory production control (see 8.3).
Alternative methods of test to the reference methods specified in this European Standard may be adopted
except for the !product type determination tests" and in case of dispute, provided that these alternative
methods satisfy the following:
a) a correlation can be shown to exist between the results from the reference method and those from the
alternative method; or
b) a safe relationship can be demonstrated when using the alternative method compared to the reference
methods and
c) the information on which the relationship is based is available.
8.2 !Product type determination"
!After completion of the development of a new product type and before placing on the market, appropriate
product type determination shall be carried out to confirm that the properties predicted from the development
meet the requirements of this standard and the performance of the characteristics to be declared for the
product.
Whenever a major change in the source, blend, or nature of raw materials occurs, or when there is a change
in processing conditions, leading to what the manufacturer considers will constitute a new product type being
produced, the appropriate product type determination shall be repeated."
The manufacturer may define product groups. The product group may differ according to the characteristics in
question.
!In the product type determination process a manufacturer may take into consideration pre-existing results.
A manufacturer may use the product type determination results carried out by someone else (e.g. another
manufacturer or a Research, Technology & Development service provider) to justify his own declaration of
performance regarding a product that is manufactured according to the same design and with raw materials,
constituents and manufacturing methods of the same kind, provided that permission is given by the owner of
the results, and the results are valid for both products."
!deleted text"
The tests to be conducted shall be the tests or calculations as described in Table A.1 for the properties
selected from the following list relevant to the manufacturer’s declaration for the product type’s intended use:
— dimensions;
— dimensional tolerances, including flatness and plane parallelism of bed faces;
— configuration;
— dry density and tolerances;
— compressive strength;
— thermal properties;
— durability;
— water absorption;
— water vapour permeability;
— flatness of surfaces;
— moisture movement;
— reaction to fire;
— bond strength.
!Sampling for product type determination shall be in accordanc
...