prEN 1024
(Main)Clay roofing tiles for discontinuous laying - Determination of geometric characteristics
Clay roofing tiles for discontinuous laying - Determination of geometric characteristics
This European standard specifies the methods for determining the geometric characteristics of clay tiles as defined in EN 1304, Clay roofing tiles and fittings - Product definitions and specifications.
Tondachziegel für überlappende Verlegung - Bestimmung der geometrischen Kennwerte
Diese Europäische Norm legt die Prüfverfahren für die Bestimmung der geometrischen Kennwerte von Tondachziegeln fest, die in EN 1304, Dachziegel und Formziegel - Begriffe und Produktanforderungen definiert sind.
Tuiles de terre cuite pour pose en discontinu - Détermination des caractéristiques géométriques
La présente Norme européenne spécifie les méthodes de détermination des caractéristiques géométriques des tuiles en terre cuite telles que définies dans l'EN 1304, Tuiles et accessoires en terre cuite - Définitions et spécifications des produits.
Opečni strešniki - Ugotavljanje geometrijskih značilnosti
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2017
2SHþQLVWUHãQLNL8JRWDYOMDQMHJHRPHWULMVNLK]QDþLOQRVWL
Clay roofing tiles for discontinuous laying - Determination of geometric characteristics
Tondachziegel für überlappende Verlegung - Bestimmung der geometrischen Kennwerte
Tuiles de terre cuite pour pose en discontinu - Détermination des caractéristiques
géométriques
Ta slovenski standard je istoveten z: prEN 1024
ICS:
91.060.20 Strehe Roofs
91.100.25 Gradbeni izdelki iz terakote Terracotta building products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2017
ICS 91.100.25 Will supersede EN 1024:2012
English Version
Clay roofing tiles for discontinuous laying - Determination
of geometric characteristics
Tuiles de terre cuite pour pose en discontinu - Tondachziegel für überlappende Verlegung -
Détermination des caractéristiques géométriques Bestimmung der geometrischen Kennwerte
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 128.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1024:2017 E
worldwide for CEN national Members.
Contents Page
Foreword . 3
1 Scope . 4
2 Normative references . 4
3 Symbols . 4
4 Test pieces . 5
5 Tests methods . 5
5.1 Determination of dimensional characteristics. 5
5.1.1 Individual dimensions . 5
5.1.2 Overlap dimensions (margins) . 6
5.2 Cambers . 8
5.2.1 Principle . 8
5.2.2 Apparatus (Figure 9) . 12
5.2.3 Procedure. 13
5.2.4 Expression of results . 13
5.3 Control of regularity of shape . 13
5.3.1 Twist . 13
5.3.2 Uniformity of transverse profiles . 17
6 Test report . 18
Annex A (informative) Example of twist measurement device for tiles with sidelock and
headlock, tiles with sidelock only and overlapping tiles . 19
Foreword
This document (prEN 1024:2017) 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 document will supersede EN 1024:2012.
This European Standard is one of the series of standards dealing with clay roofing tiles as listed below:
— EN 1304, Clay roofing tiles and fittings — Products definitions and specifications
— EN 538, Clay roofing tiles for discontinuous laying — Flexural strength test
— EN 539, Clay roofing tiles for discontinuous laying — Determination of physical characteristics
1 Scope
This European standard specifies the methods for determining the geometric characteristics of clay tiles
as defined in EN 1304, Clay roofing tiles and fittings — Product definitions and specifications.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 1304, Clay roofing tiles and fittings — Product definitions and specifications
3 Symbols
For the purposes of this document, the following symbols apply.
L maximum distance when measuring covering dimensions (length) in millimetres (mm);
L minimum distance when measuring covering dimensions (length) in millimetres (mm);
l maximum distance when measuring covering dimensions (width) in millimetres (mm);
l minimum distance when measuring covering dimensions (width) in millimetres (mm);
L mean cover length in millimetres (mm);
L maximum cover length in millimetres (mm);
M
L minimum cover length in millimetres (mm);
m
l mean cover width in millimetres (mm);
l maximum cover width in millimetres (mm);
M
l minimum cover width in millimetres (mm);
m
L2 minimum distance when measuring the overlapped dimensions in millimetres (mm);
T
L2 minimal overlapped dimension in millimetres (mm);
H difference in height from the measuring point at the support bar or height in relation to a
reference plane in millimetres (mm);
C twist coefficient in percent;
A tile length as declared by the manufacturer in millimetres (mm);
B tile width as declared by the manufacturer in millimetres (mm);
h height of camber as declared by the manufacturer in millimetres (mm);
d
h measured height of camber in millimetres (mm);
m
R camber in percentage;
Δh │h h │ absolute value in millimetres (mm);
m - d
L total length of the tile in millimetres (mm);
T
l total width of the tile in millimetres (mm);
T
L measurement base in longitudinal direction in millimetres (mm);
A
L measurement base in transverse direction in millimetres (mm);
B
E distance between the internal edges of an over - and under- tile at one of its extremities in
millimetres (mm);
E distance between the internal edges of an over - and under- tile at the other extremity in
millimetres (mm).
4 Test pieces
The measurement of geometric characteristics are carried out on 10 test pieces, each of which
constitutes a whole tile, except for the measurement of cover dimensions, which requires 24 tiles.
5 Tests methods
5.1 Determination of dimensional characteristics
5.1.1 Individual dimensions
5.1.1.1 Apparatus
The tests are made with a measuring apparatus with a precision of at least one millimetre.
5.1.1.2 Procedure
After removing any surplus clay from the edges, the measurements shall be taken, both transversely
and longitudinally along the centre of the tile unless another measuring position has been specified by
the manufacturer (see Figure 1). The dimensions are expressed to the nearest whole millimetre.
Key
1 tile
Figure 1 — Principle for measuring individual dimensions
EN 1304 specifies to which type of tiles these measurements apply.
5.1.1.3 Expression of results
The arithmetic means of the lengths and widths of the 10 tested tiles and the differences expressed as a
percentage of these mean values in relation to the values A and B declared by the manufacturer shall be
calculated and noted in the test report.
5.1.2 Overlap dimensions (margins)
5.1.2.1 Principle
The mean overlap dimensions are determined longitudinally and/or transversely.
They are measured as indicated in Figure 2.
NOTE Certain tile models can only be measured in one direction.
Key
1 mean cover length
1.1 open position
1.2 closed position
2 mean cover width
2.1 open position
2.2 closed position
Figure 2 — Principle for measuring cover dimensions
5.1.2.2 Number of test pieces
24 tiles are required for the measurements.
5.1.2.3 Apparatus
The tests are carried out with a measuring apparatus with a precision of at least 1 mm.
5.1.2.4 Procedure
5.1.2.4.1 Interlocking tiles
The tiles are laid upside down in two rows on a flat surface, and interlocked with one another so as to
form a stable unit. Certain types of tiles may require laying the right way up.
The tiles are interlocked longitudinally and pulled apart individually to measure the maximum distance
between two corresponding points on the first and the eleventh tile, i.e. L , the maximum length.
Following this, the tiles are taken up, then relaid and interlocked. They are pushed together individually
as closely as possible without lifting the upper tile to carry out the measurement of the minimum
distance (L ) following the procedure described above.
Take again the same measurements, but this time, transversely in order to obtain the values l and l .
1 2
With regard to tiles with a variable overlap, determine the measurement of cover in the open position,
L (longitudinally), l (transversely).
1 1
With regard to tiles with a variable overlap, determine the measurement of cover in the closed position,
L (longitudinally), l (transversely), when relevant.
2 2
5.1.2.4.2 Under and over tiles with lugs to fix the headlap
The tiles are laid upside down in two rows on a flat surface, and interlocked with one another so as to
form a stable unit.
The tiles are interlocked longitudinally and pushed apart individually to measure the minimum distance
between two corresponding points on the first and the eleventh tile, i.e. L2 , the minimum length.
T
NOTE This method is not relevant to some types of tiles designed to be laid broken jointed.
5.1.2.5 Expression of results
5.1.2.5.1 General
The calculated values as recorded are rounded to the nearest whole millimetre.
The percentage difference of these cover dimensions compared with those declared by the
manufacturer are calculated and stated in the test report.
5.1.2.5.2 Interlocking tiles
The mean cover length (L) is obtained from the following formula:
L = (L +L ) / 20 (1)
1 2
The maximum cover length (L ) (tiles with a variable overlap) is obtained from the following formula:
M
L = L / 10
M 1
The minimum cover length (L ) (tiles with a variable overlap) is obtained from the following formula:
m
L = L / 10 (2)
m 2
The mean cover width (l) is calculated from the following formula:
l = (l + l ) / 20 (3)
1 2
The maximum cover width (l ) (of tiles with a variable overlap) is calculated from the following
M
formula:
l = l / 10
M 1
The minimum cover width (l ) (of tiles with a variable overlap) is calculated from the following
m
formula:
l = l / 10 (4)
m 2
5.1.2.5.3 Under and over tiles with lugs to fix the head lap
The minimal overlapped dimension (L2) is obtained from the following formula:
L2= L2 / 10
T
5.2 Cambers
5.2.1 Principle
Measure height of camber longitudinally and transversely for plain tiles (see Figures 3, 4 and 5) and
longitudinally only for all other types of tile (see Figures 6, 7 and 8). The height of camber for a
curvature whose concavity is located on the outer surface of the tile are given a minus sign and a plus
sign is given in the o
...
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