Ceramic tiles — Definitions, classification, characteristics and marking

This document defines terms and establishes classifications, characteristics and marking requirements for ceramic tiles of the best commercial quality (first quality). This document is not applicable to tiles made by other than normal processes of extrusion or dry pressing. It is not applicable to decorative accessories or trim such as edges, corners, skirting, capping, coves, beads, steps, curved tiles and other accessory pieces or mosaics (i.e. any piece that can fit into a square, the side of which is less than 7 cm). NOTE ISO 10545 (all parts) describes the test procedures required to determine the product characteristics listed in this document. ISO 10545 is a multi-part standard, each part describes a specific test procedure or related matter.

Carreaux et dalles céramiques — Définitions, classification, caractéristiques et marquage

General Information

Status
Published
Publication Date
04-Sep-2018
Current Stage
9092 - International Standard to be revised
Start Date
19-Nov-2018
Completion Date
19-Nov-2018
Ref Project

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INTERNATIONAL ISO
STANDARD 13006
Third edition
2018-09
Ceramic tiles — Definitions,
classification, characteristics and
marking
Carreaux et dalles céramiques — Définitions, classification,
caractéristiques et marquage
Reference number
ISO 13006:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 13006:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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ISO 13006:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Classification ............................................................................................................................................................................................................ 4

4.1 Basis of classification ......................................................................................................................................................................... 4

4.2 Methods of manufacture ................................................................................................................................................................. 4

4.3 Water absorption according to group ................................................................................................................................. 4

4.3.1 General...................................................................................................................................................................................... 4

4.3.2 Subdivision of the three groups .......................................................................................................................... 4

5 Characteristics ........................................................................................................................................................................................................ 5

6 Sampling and basis for acceptance.................................................................................................................................................... 5

7 Requirements .......................................................................................................................................................................................................... 5

8 Marking and specifications ....................................................................................................................................................................... 5

8.1 Marking ......................................................................................................................................................................................................... 5

8.2 Product literature ................................................................................................................................................................................. 6

8.3 Specifications............................................................................................................................................................................................ 6

9 Ordering ........................................................................................................................................................................................................................ 7

Annex A (normative) Extruded ceramic tiles with low water absorption 0,5 < E ≤ 3 %

Group AI ...................................................................................................................................................................................................................10

Annex B (normative) Extruded ceramic tiles 3 % < E ≤ 6 % Group AII — Subgroup (Part) 1 ...........13

v a

Annex C (normative) Extruded ceramic tiles 3 % < E ≤ 6 % Group AII — Subgroup (Part) 2 ...........16

v a

Annex D (normative) Extruded ceramic tiles 6 % < E ≤ 10 % Group AII — Subgroup (Part) 1.......19

v b

Annex E (normative) Extruded ceramic tiles 6 % < E ≤ 10 % Group AII — Subgroup (Part) 2 .......22

v b

Annex F (normative) Extruded ceramic tiles E > 10 % Group AIII...................................................................................25

Annex G (normative) Dry-pressed ceramic tiles with low water absorption E ≤ 0,5 % Group BI 28

v a

Annex H (normative) Dry-pressed ceramic tiles with low water absorption 0,5 % < E ≤ 3 %

Group BI ...................................................................................................................................................................................................................32

Annex I (informative) Intentionally blank ...................................................................................................................................................35

Annex J (normative) Dry-pressed ceramic tiles 3 % < E ≤ 6 % Group BII ..............................................................36

v a

Annex K (normative) Dry-pressed ceramic tiles 6 % < E ≤ 10 % Group BII ........................................................39

v b

Annex L (normative) Dry-pressed ceramic tiles E > 10 % Group BIII ..........................................................................42

Annex M (normative) Extruded ceramic tiles with low water absorption E ≤ 0,5 % Group AI ........45

v a

Annex N (informative) Classification of glazed tiles for floors according to their abrasion

resistance ..................................................................................................................................................................................................................48

Annex O (informative) Intentionally blank .................................................................................................................................................49

Annex P (informative) Test methods .................................................................................................................................................................50

Annex Q (informative) Intentionally blank .................................................................................................................................................51

Annex R (informative) Symbols recommended for use .................................................................................................................52

Bibliography .............................................................................................................................................................................................................................53

© ISO 2018 – All rights reserved iii
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ISO 13006:2018(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see: www .iso

.org/iso/foreword .html.
This document was prepared by ISO/TC 189, Ceramic tile.

This third edition cancels and replaces the second edition (ISO 13006:2012), which has been technically

revised.
This main changes compared to the previous edition are as follows:

— The boiling method in ISO 10545-3 is no longer referenced for the determination of water absorption.

The vacuum method is now referenced for the determination of water absorption.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved
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INTERNATIONAL STANDARD ISO 13006:2018(E)
Ceramic tiles — Definitions, classification, characteristics
and marking
1 Scope

This document defines terms and establishes classifications, characteristics and marking requirements

for ceramic tiles of the best commercial quality (first quality). This document is not applicable to tiles

made by other than normal processes of extrusion or dry pressing. It is not applicable to decorative

accessories or trim such as edges, corners, skirting, capping, coves, beads, steps, curved tiles and other

accessory pieces or mosaics (i.e. any piece that can fit into a square, the side of which is less than 7 cm).

NOTE ISO 10545 (all parts) describes the test procedures required to determine the product characteristics

listed in this document. ISO 10545 is a multi-part standard, each part describes a specific test procedure or

related matter.
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.

ISO 1006, Building construction — Modular coordination — Basic module
ISO 10545-1, Ceramic tiles — Part 1: Sampling and basis for acceptance

ISO 10545-2, Ceramic tiles — Part 2: Determination of dimensions and surface quality

ISO 10545-3, Ceramic tiles — Part 3: Determination of water absorption, apparent porosity, apparent

relative density and bulk density

ISO 10545-4, Ceramic tiles — Part 4: Determination of modulus of rupture and breaking strength

ISO 10545-5, Ceramic tiles — Part 5: Determination of impact resistance by measurement of coefficient of

restitution

ISO 10545-6, Ceramic tiles — Part 6: Determination of resistance to deep abrasion for unglazed tiles

ISO 10545-7, Ceramic tiles — Part 7: Determination of resistance to surface abrasion for glazed tiles

ISO 10545-8, Ceramic tiles — Part 8: Determination of linear thermal expansion

ISO 10545-9, Ceramic tiles — Part 9: Determination of resistance to thermal shock

ISO 10545-10, Ceramic tiles — Part 10: Determination of moisture expansion

ISO 10545-11, Ceramic tiles — Part 11: Determination of crazing resistance for glazed tiles

ISO 10545-12, Ceramic tiles — Part 12: Determination of frost resistance
ISO 10545-13, Ceramic tiles — Part 13: Determination of chemical resistance
ISO 10545-14, Ceramic tiles — Part 14: Determination of resistance to stains

ISO 10545-15, Ceramic tiles — Part 15: Determination of lead and cadmium given off by glazed tiles

ISO 10545-16, Ceramic tiles — Part 16: Determination of small colour differences
© ISO 2018 – All rights reserved 1
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ISO 13006:2018(E)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 1006 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https: //www .electropedia .org/
— ISO Online browsing platform: available at https: //www .iso .org/obp
3.1
ceramic tile

thin slab made from clays and/or other inorganic raw materials, generally used as covering for floors

and walls, usually shaped by extruding (A) or pressing (B) at room temperature, but may be formed

by other processes (C), then dried and subsequently fired at temperatures sufficient to develop the

required properties

Note 1 to entry: Tiles may be glazed (GL) or unglazed (UGL); they are incombustible and are not affected by light.

3.2
porcelain tile

fully vitrified tile with water absorption coefficient less than or equal to a mass fraction of 0,5 %,

belonging to groups AI and BI
a a
3.3
glaze
vitrified covering that is impermeable
3.4
engobed surface
clay-based covering with a matt finish which may be permeable or impermeable
Note 1 to entry: A tile with an engobed surface is regarded as an unglazed tile.
3.5
polished surface

surface of glazed and unglazed tile which has been given a glossy finish by mechanical polishing as the

last stage of manufacture
3.6
extruded tile

tile, whose body is shaped in the plastic state in an extruder, the column obtained being cut into tiles of

pre-determined dimension, and which is designated as Group A

Note 1 to entry: This document classifies extruded tiles as “precision” or “natural”. The classification is dependent

upon the different technical characteristics as listed in the individual product standards.

Note 2 to entry: Traditional terms used for extruded products are “split tiles” and “quarry tiles”. They commonly

indicate double-extruded and single-extruded tiles, respectively. The term “quarry tiles” only refers to extruded

tiles with a water absorption coefficient of a mass fraction not exceeding 6 %.
3.7
dry-pressed tile

tile, formed from a finely milled body mixture and shaped (e.g. in dies or moulds) at high pressure, and

which is designated as Group B
3.8
water absorption
percentage of water impregnating a tile
Note 1 to entry: This is measured in accordance with ISO 10545-3.
2 © ISO 2018 – All rights reserved
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ISO 13006:2018(E)
Note 2 to entry: Water absorption is expressed as a mass fraction of dry mass.
3.9 Sizes

Note 1 to entry The sizes are only defined for rectangular tiles. If the sizes of non-rectangular tiles are required,

they are defined by the smallest rectangle into which they fit.
3.9.1
nominal size
size used to describe the product
Note 1 to entry: See Figures 1 and 2.
3.9.2
work size

size of a tile specified for manufacturing to which the actual size shall conform within specified

permissible deviations
Note 1 to entry: See Figures 1 and 2.
3.9.3
actual size
size obtained by measuring the face of a tile
Note 1 to entry: This is measured in accordance with ISO 10545-2.
Note 2 to entry: See Figures 1 and 2.
3.9.4
coordinating size
work size plus the joint width
Note 1 to entry: See Figures 1 and 2.
3.9.5
modular size

tile and size based on module M, 2 M, 3 M and 5 M and also their multiples or subdivisions, except for

tiles with a surface area of less than 9 000 mm
Note 1 to entry: See ISO 1006, where 1 M = 100 mm.
Note 2 to entry: See Figures 1 and 2.
3.9.6
non-modular size
size not based on module M
Note 1 to entry: See ISO 1006, where 1 M = 100 mm.
Note 2 to entry: Tiles of these sizes are those commonly used in most countries.
Note 3 to entry: See Figures 1 and 2.
3.9.7
tolerance
difference between the permissible limits of size
Note 1 to entry: See Figures 1 and 2.
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ISO 13006:2018(E)
3.10
spacer lug

projection that is located along certain edges of tiles so that where two tiles are placed together, in line,

the lugs on adjacent edges separate the tiles by a distance of not less than the specified width of the joint

Note 1 to entry: See Figure 2.
3.11
rectified tile

ceramic tile that, after firing, is subjected to a precise mechanical finishing of the edges

3.12
back feet

parallel ridges running across the back surface of some exterior wall tiles which possess a geometry

intended to facilitate an interlocking connection between tile and cement mortar
Note 1 to entry: See Figure 3.

Note 2 to entry: Back feet dimensions shall be measured with vernier calipers, and each specimen in a 10-tile

sample is required to satisfy the requirements in Annexes A to H and Annexes J to M.

4 Classification
4.1 Basis of classification

Ceramic tiles are divided into groups according to their method of manufacture and their water

absorption (see 3.8 and Table 1). The groups do not presuppose the usage of the products.

4.2 Methods of manufacture
The following are the two methods of manufacture:
— method A, extruded tiles (see 3.6);
— method B, dry-pressed tiles (see 3.7).
4.3 Water absorption according to group
4.3.1 General
The following are the three groups according to water absorption, E .
4.3.2 Subdivision of the three groups

The three groups are divided into tiles of low, medium and high water absorption, namely Groups I, II

and III, respectively.

a) Tiles of low water absorption, i.e. absorption coefficient less than or equal to a mass fraction of 3 %,

E ≤ 3 %, belong to Group I. Group I consists of the following:
1) for extruded tiles
i) E ≤ 0,5 % (Group AI ), and
v a
ii) 0,5 % < E ≤ 3 % (Group AI );
v b
2) for dry-pressed tiles:
i) E ≤ 0,5 % (Group BI );
v a
4 © ISO 2018 – All rights reserved
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ISO 13006:2018(E)
ii) 0,5 % < E ≤ 3 % (Group BI ).
v b

b) Tiles of medium water absorption, i.e. 3 % < E ≤ 10 %, belong to Group II. Group II consists of the

following:
1) for extruded tiles

i) 3 % < E ≤ 6 % [Group AII , Subgroups (Parts) 1 and 2; see Annex B for Subgroup (Part) 1

v a
or Annex C for Subgroup (Part) 2], and

ii) 6 % < E ≤ 10 % [Group AII , Subgroups (Parts) 1 and 2; see Annex D for Subgroup (Part) 1

v b
or Annex E for Subgroup (Part) 2];
2) for dry-pressed tiles
i) 3 % < E ≤ 6 % (Group BII ), and
v a
ii) 6 % < E ≤ 10 % (Group BII ).
v b
c) Tiles of high water absorption, i.e. E > 10 %, belong to Group III.
5 Characteristics

The characteristics for different applications of ceramic tiles are given in Table 2.

6 Sampling and basis for acceptance

The sampling and basis for acceptance shall be in accordance with that presented in ISO 10545-1.

7 Requirements

Dimensional and surface quality requirements and physical and chemical properties shall be as given

in the relevant/specific annex, of Annexes A to H and Annexes J to M, for each tile class.

NOTE Annexes I, O and Q are intentionally left blank. This is as a convenience to producers in order to avoid

changes to packaging and related costs. In addition, at the time of publication, the market offers consumers

various products identified by the matching annex headings of this document.
8 Marking and specifications
8.1 Marking
Tiles and/or their packaging are required to bear the following marking:

a) manufacturer’s mark and/or trademark and the country where the tile was manufactured (i.e.

country of origin, as determined by the relevant international regulation);
b) indication of first quality;

c) type of tile and reference to the appropriate group and/or annex of Annexes A to H and Annexes J to

M covering the specific group of tile;
d) nominal and work sizes, and “M” if modular;
e) nature of the surface, i.e. glazed (GL) or unglazed (UGL);
f) any surface treatment applied after firing;
g) total number of tiles in the package;
© ISO 2018 – All rights reserved 5
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ISO 13006:2018(E)
h) manufacturer’s production run or batch number;
i) an indication of colour consistency, as defined by the manufacturer;
j) total dry weight which the tiles and their packaging shall not exceed.
EXAMPLE 1
The ABC Tile Co., Made in China, Ceramic Tile of First Quality
Extruded tile, ISO 13006:2018, Annex A, Group Al , Precision
M, 25 cm × 12,5 cm (S 240 mm × 115 mm × 12,5 mm), UGL, Protective Sealer Added
20 pcs/box, batch A50, 0100-Gray, Max dry weight: 20 kg
EXAMPLE 2
The 123 Tile Co., Made in Spain, Ceramic Tile of First Quality
Dry-pressed porcelain tile, ISO 13006:2018, Annex G, Group BI , Rectified
60 cm × 60 cm (S 598 mm × 598 mm × 10 mm) UGL
3 pcs/box, batch B52, 0590-Slate, Max dry weight: 16 kg
EXAMPLE 3
The XYX Tile Co., Made in Indonesia, Ceramic Tile of First Quality
Dry-pressed tile, ISO 13006:2018, Annex H, Group BI Non-rectified
30 cm × 30 cm (S 299 mm × 299 mm × 10 mm) GL
10 pcs/box, batch C60, 0320-Ivory, Max dry weight: 20 kg

Each tile conforming to this document is required to bear on its reverse side or edge, the country where

it was manufactured.
8.2 Product literature

Product literature for tiles intended for use on floors shall state the abrasion class or the place of use of

glazed tiles.
8.3 Specifications
Tiles shall be designated by the following:
a) the method of shaping;

b) the relevant group and/or annex of Annexes A to H and Annexes J to M covering the specific

group of tile
c) nominal and work sizes, and “M” if modular;
d) the nature of the surface, i.e. glazed (GL) or unglazed (UGL);
e) the addition of back feet, if required.

EXAMPLE 1 Precision extruded tile, ISO 13006:2018, Annex M, AIa M 25 cm × 12,5 cm

(S 240 mm × 115 mm × 10 mm) GL.
EXAMPLE 2 Natural extruded tile, ISO 13006:2018, Annex A, AIb 15 cm × 15 cm
(S 150 mm × 150 mm × 12,5 mm) UGL.
EXAMPLE 3 Dry-pressed tile, ISO 13006:2018, Annex G, BI M 25 cm × 12,5 cm
(S 240 mm × 115 mm × 10 mm) GL.
EXAMPLE 4 Dry-pressed tile, ISO 13006:2018, Annex L, BIII 15 cm × 15 cm
(S 150 mm × 150 mm × 12,5 mm) UGL.
6 © ISO 2018 – All rights reserved
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ISO 13006:2018(E)
9 Ordering

Each time that an order is placed, items, such as size, thickness, type of surface, colour, profile, abrasion

class for glazed tiles and other properties, shall be agreed upon by the parties concerned.

Table 1 — Classification of ceramic tiles with respect to water absorption and shaping

Group I Group II Group II Group III
a b
Shaping
E ≤ 3 % 3 % < E ≤ 6 % 6 % < E ≤ 10 % E > 10 %
v v v v
Group AI
a a
Group AII Group AII
a-1 b-1
E ≤ 0,5 %
(see Annex B) (see Annex D)
A Group AIII
(see Annex M)
Group AI
Extruded (see Annex F)
a a
Group AII Group AII
a-2 b-2
0,5 % < E ≤ 3 %
(see Annex C) (see Annex E)
(see Annex A)
Group BI
E ≤ 0,5 %
B Group BII Group BII Group BIII
(see Annex G)
a b
Group BI
Dry pressed (see Annex J) (see Annex K) (see Annex L)
0,5 % < E ≤ 3 %
(see Annex H)

Groups AII and AII are divided into two subgroups (Parts 1 and 2) with different product specifications.

a b

Group BIII covers glazed tiles only. There is a low quantity of dry-pressed unglazed tiles produced with water

absorption greater than 10 % mass fraction, which is not covered by this product group.

Table 2 — Characteristics required for different applications
Characteristics Floor Wall Test
Dimensions and surface quality Interior Exterior Interior Exterior Reference
Length and width X X X X ISO 10545-2
Thickness X X X X ISO 10545-2
Straightness of sides X X X X ISO 10545-2
Rectangularity X X X X ISO 10545-2
Surface flatness (curvature and warpage) X X X X ISO 10545-2
Surface quality X X X X ISO 10545-2
Back feet (if specified) X Figure 3
Physical property Interior Exterior Interior Exterior Reference
Water absorption X X X X ISO 10545-3
Breaking strength X X X X ISO 10545-4
Modulus of rupture X X X X ISO 10545-4
Resistance to deep abrasion — unglazed tiles X X ISO 10545-6
Resistance to surface abrasion — glazed tiles X X ISO 10545-7
Linear thermal expansion X X X X ISO 10545-8
Resistance to thermal shock X X X X ISO 10545-9
Resistance to crazing — glazed tiles X X X X ISO 10545-11
Frost resistance X X ISO 10545-12
Moisture expansion X X X X ISO 10545-10
Small colour differences X X X X ISO 10545-16
© ISO 2018 – All rights reserved 7
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ISO 13006:2018(E)
Table 2 (continued)
Characteristics Floor Wall Test
Dimensions and surface quality Interior Exterior Interior Exterior Reference
Impact resistance X X ISO 10545-5
Chemical property Interior Exterior Interior Exterior Reference
Resistance to staining ISO 10545-14
— glazed tiles X X X X ISO 10545-14
— unglazed tiles X X X X ISO 10545-14
Resistance to low concentrations of acids X X X X ISO 10545-13
and alkalis
Resistance to high concentrations of acids and X X X X ISO 10545-13
alkalis
Resistance to household cleaners and swim- X X X X ISO 10545-13
ming pool salts
Lead and cadmium release — glazed tiles X X X X ISO 10545-15

For application to exterior tiles installed by cement mortar, including tunnels, where back feet are specified.

Test method is available.
For tiles intended to be used in situations where frost conditions apply.
Key
a, b dimensions of the tile
d thickness
j joint
S coordinating size
S work size
S = S + j
c w
S = a, b, d
Figure 1 — Tile
8 © ISO 2018 – All rights reserved
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ISO 13006:2018(E)
Key
1 spacer lugs
j joint
S coordinating size
S work size
S = S + j
c w
S = a, b, d
Figure 2 — Tile with spacer lug
a) Example 1 b) Example 2 c) Example 3
Key
h height
L length
Figure 3 — Back feet — Examples
© ISO 2018 – All rights reserved 9
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ISO 13006:2018(E)
Annex A
(normative)
Extruded ceramic tiles with low water absorption 0,5 < E ≤ 3 %
Group AI

Dimensional and surface quality requirements and physical and chemical properties are required to be

in accordance with Table A.1.
Table A.1 — Requirements for extruded ceramic tiles — Group AI , 0,5 < E ≤ 3 %
b v
Dimensions and surface quality Precision Natural Test
Length and width
The manufacturer shall choose the work
size as follows:
a) for modular tiles in order to allow a
nominal joint width of between 3 mm
and 11 mm ;
b) for non-modular tiles so that the
difference between the work size
and the nominal size is not more
than ±3 mm.
The deviation, in percent, of the average
±1,0 % to a ±2,0 % to a
size for each tile (two or four sides) from ISO 10545-2
maximum of ±2 mm maximum of ±4 mm
the work size, S
The deviation, in percent, of the average
size for each tile (two or four sides) from
±1,0 % ±1,5 % ISO 10545-2
the average size of the 10 test specimens
(20 or 40 sides)
Thickness
a) The thickness shall be specified by
the manufacturer
b) The deviation, in percent, of the
average thickness of each tile from ±10 % ±10 % ISO 10545-2
the work size thickness
Straightness of sides (facial sides)
The maximum deviation from straight-
ness, in percent, related to the corre- ±0,5 % ±0,6 % ISO 10545-2
sponding work sizes
Rectangularity
The maximum deviation from rectangu-
larity, in percent, related to the corre- ±1,0 % ±1,0 % ISO 10545-2
sponding work sizes
Surface flatness
The maximum deviation from flatness, in
percent:
a) centre curvature, related to diagonal
±0,5 % ±1,5 % ISO 10545-2
calculated from the work sizes;
b) edge curvature, related to the
±0,5 % ±1,5 % ISO 10545-2
corresponding work sizes;
10 © ISO 2018 – All rights reserved
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ISO 13006:2018(E)
Table A.1 (continued)
Dimensions and surface quality Precision Natural Test
c) warpage, related to the diagonal
±0,8 % ±1,5 % ISO 10545-2
calculated from the work sizes.
Back feet (if specified)
a) Height, h, for tiles of surface area, A
2 2
49 cm ≤ A < 60 cm Minimum h = 0,7 mm; Maximum h = 3,5 mm Figure 3
A ≥ 60 cm Minimum h = 1,5 mm; Maximum h = 3,5 mm Figure 3
Back feet as specified by the manufacturer
b) Shape and as shown in one of t
...

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