EN 572-8:2012

SLOVENSKI STANDARD
01-oktober-2012
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SIST EN 572-8:2004
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Glass in building - Basic soda lime silicate glass products - Part 8: Supplied and final cut
sizes
Glas im Bauwesen - Basiserzeugnisse aus Kalk-Natronsilicatglas - Teil 8: Liefermaße
und Festmaße
Verre dans la construction - Produits verriers de silicate sodo-calcique de base - Partie 8:
Mesures livrées et mesures découpées finales
Ta slovenski standard je istoveten z: EN 572-8:2012
ICS:
81.040.20 Steklo v gradbeništvu Glass in building
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 572-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2012
ICS 81.040.20 Supersedes EN 572-8:2004
English Version
Glass in building - Basic soda lime silicate glass products - Part
8: Supplied and final cut sizes
Verre dans la construction - Produits verriers de silicate Glas im Bauwesen - Basiserzeugnisse aus Kalk-
sodo-calcique de base - Partie 8: Mesures livrées et Natronsilicatglas - Teil 8: Liefermaße und Festmaße
mesures découpées finales
This European Standard was approved by CEN on 11 May 2012.

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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 572-8:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Glass products .8
5 Dimensional requirements .8
5.1 Manufacturing dimensions .8
5.1.1 Supplied sizes .8
5.1.2 Final cut sizes .8
5.2 Thickness .9
5.2.1 General .9
5.2.2 Tolerances .9
5.3 Length, width, and squareness . 10
6 Quality requirements . 12
6.1 General . 12
6.2 Methods of observation and measurement . 13
6.2.1 Optical faults . 13
6.2.2 Visual faults . 13
6.2.3 Edge defects for final cut sizes . 14
6.3 Acceptance levels . 15
6.3.1 Optical faults . 15
6.3.2 Visual faults . 15
Annex A (normative)  Test methods of examination for visual faults – Spot faults and
linear/extended faults . 22
A.1 Float glass (EN 572-2:2012) . 22
A.1.1 Method of observation . 22
A.1.2 Linear/extended faults . 22
A.2 Polished wired glass (EN 572-3:2012) . 22
A.2.1 Spot faults . 22
A.2.2 Linear/extended faults . 23
A.3 Drawn sheet glass (EN 572-4:2012) . 23
A.3.1 Spot faults . 23
A.3.2 Linear/extended faults . 23
A.4 Patterned glass (EN 572-5:2012) and wired patterned glass (EN 572-6:2012) — Spot and
linear/extended faults . 23
Annex B (normative) Method for measuring spot fault size (including halo) . 24
B.1 Conditions of observation . 24
B.2 Measurement of the size of the spot fault including the halo . 25
Bibliography . 26

Foreword
This document (EN 572-8:2012) has been prepared by Technical Committee CEN/TC 129 “Glass in building”,
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 January 2013, and conflicting national standards shall be withdrawn at
the latest by January 2013.
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 572-8:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
This edition is a revision of EN 572-8:2004. The main changes in this edition are:
a) a new method of determination of squareness;
b) a new method of measurement for spot fault (including halo) and an adaptation of the related
requirements.
The European Standard EN 572:2012 “Glass in building — Basic soda lime silicate glass products” consists of
the following parts:
 Part 1: Definitions and general physical and mechanical properties;
 Part 2: Float glass;
 Part 3: Polished wired glass;
 Part 4: Drawn sheet glass;
 Part 5: Patterned glass;
 Part 6: Wired patterned glass;
 Part 7: Wired or unwired channel shaped glass;
 Part 8: Supplied and final cut sizes;
 Part 9: Evaluation of conformity/Product standard.
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, 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 dimensional and minimum quality requirements (in respect of optical and
visual faults) for basic soda lime silicate glass products, as defined in EN 572-1:2012, for use in building. It
applies to supplied sizes or cut sizes for final end use.
This European Standard does not apply to final cut sizes having a dimension less than 100 mm or a surface
area less than 0,05 m².
This European Standard does not apply to float glass supplied as jumbo, split sizes or oversize plates nor to
polished wired glass, drawn sheet glass, patterned glass, patterned wired glass supplied as stock sizes. For
specifications regarding these types of glass, see EN 572-2:2012, EN 572-3:2012, EN 572-4:2012,
EN 572-5:2012 and EN 572-6:2012 respectively.
This European Standard does not apply to final cut sizes of wired or unwired channel shaped glass For
specifications on this type of glass, see EN 572-7:2012.
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 572-1:2012, Glass in building — Basic soda lime silicate glass products — Part 1: Definitions and general
physical and mechanical properties
EN 572-2:2012, Glass in building — Basic soda lime silicate glass products — Part 2: Float glass
EN 572-3:2012, Glass in building — Basic soda lime silicate glass products — Part 3: Polished wired glass
EN 572-4:2012, Glass in building — Basic soda lime silicate glass products — Part 4: Drawn sheet glass
EN 572-5:2012, Glass in building — Basic soda lime silicate glass products — Part 5: Patterned glass
EN 572-6:2012, Glass in building — Basic soda lime silicate glass products — Part 6: Wired patterned glass
3 Terms and definitions
For the purposes of document, the terms and definitions given in EN 572-1:2012, EN 572-2:2012,
EN 572-3:2012, EN 572-4:2012, EN 572-5:2012 and EN 572-6:2012 and the following apply.
3.1
supplied size
pane of glass that has been supplied either as raw material for further processing and/or cutting down to a
size for installation
Note 1 to entry: This is a size outside those given in EN 572-2:2012, EN 572-3:2012, EN 572-4:2012, EN 572-5:2012
and EN 572-6:2012, i.e. jumbo, split sizes or oversize plates for float glass and supplied sizes for polished wired, drawn
sheet, patterned and wired patterned glass.
3.2
final cut size
pane of glass that has been cut down to the dimensions required either for installation or processing into a
final product
Note 1 to entry: Examples of processed final products are insulating glass units and thermally toughened safety glass
of those dimensions.
3.3
length, H, and width, B
defined with reference to the direction of draw of the glass ribbon as shown in Figures 1 and 2

Key
1 direction of draw
Figure 1 — Relationship between length, width and direction of draw
for float, polished wired, patterned and wired patterned glass

Key
1 direction of draw
Figure 2 — Relationship between length, width and direction of draw for drawn sheet glass
3.4
optical fault
fault which leads to distortions in the appearance of objects observed through the glass
3.5
visual fault
fault which alters the visual quality of the glass
Note 1 to entry: Visual faults include spot faults and linear/extend faults with patterned faults and/or wire faults,
depending on type of product.
3.6
spot fault
spherical or quasi-spherical faults which are produced by differing mechanisms and are defined for a specific
glass product type/manufacturing process
3.6.1
spot fault (float glass)
nucleus which is generally accompanied by a halo of distorted glass
[SOURCE: EN 572-2:2012, 3.6]
3.6.2
halo (float glass)
area locally distorted, generally around a point defect
[SOURCE: EN 572-2:2012, 3.7]
3.6.3
spherical or quasi-spherical spot fault (polished wired, patterned and wired patterned glass)
spot fault whose larger dimension is less than or equal to twice the smaller dimension
[SOURCE: EN 572-3:2012, 3.5; EN 572-5:2012, 3.4; EN 572-6:2012, 3.4]
3.6.4
elongated spot fault (polished wired, patterned and wired patterned glass)
spot fault whose larger dimension is more than twice the smaller dimension
[SOURCE: EN 572-3:2012, 3.6; EN 572-5:2012, 3.5; EN 572-6:2012, 3.5]
3.6.5
spot fault (drawn sheet glass)
fault which can be on or in the glass, in the form of gaseous inclusion, solid inclusion, mark or deposit of small
size
[SOURCE: EN 572-4:2012, 3.8]
3.7
concentration, c (drawn sheet glass)
sum of the lengths of gaseous inclusions > 1,0 mm in any circle of 400 mm diameter
[SOURCE: EN 572-4:2012, 3.11]
3.8
linear/extended fault
fault which can be on or in the glass, in the form of deposits, marks or scratches that occupy an extended
length or area
3.9
pattern fault (patterned and wired patterned glass)
deviation of the pattern relative to a reference such as a line or straight edge
[SOURCE: EN 572-5:2012, 3.7; EN 572-6:2012, 3.7]
3.10
deviation of the pattern (patterned and wired patterned glass)
deviation, x, of the pattern
[SOURCE: EN 572-5:2012, 3.8; EN 572-6:2012, 3.8]
3.11
wire fault (polished wired and wired patterned glass)
deviation of the wire, penetration of the glass surface by the wire or break in the wire in the body of the glass
[SOURCE: EN 572-3:2012, 3.8; EN 572-6:2012, 3.9]
3.12
deviation of the wire (polished wired and wired patterned glass)
deviation, y, of the wire relative to a reference such as a line or straight edge
[SOURCE: EN 572-3:2012, 3.9; EN 572-6:2012, 3.10]
3.13
edge defect
defect which can occur on the edge of a cut size piece in the form of entrant and emergent fault and/or bevel
4 Glass products
Glass products according to the following standards can be offered as supplied sizes or final cut sizes:
 float glass  EN 572-2:2012;
 polished wired glass EN 572-3:2012;
 drawn sheet glass EN 572-4:2012;
 patterned glass  EN 572-5:2012;
 wired patterned glass EN 572-6:2012.
5 Dimensional requirements
5.1 Manufacturing dimensions
5.1.1 Supplied sizes
Supplied sizes cover glass delivered in the sizes given in Table 1.
Table 1 — Dimensions of supplied sizes
Dimensions in millimetres
Nominal dimensions
Glass type
B H
a
Float glass < 3 210 Any
< 1 980 Any
Polished wired glass
1 980 to 2 540 < 1 650
New antique drawn sheet glass; < 1 450 Any
Drawn sheet glass for renovation 1 450 to 2 160 < 1 200
< 2 440 Any
Drawn sheet glass
2 440 to 2 880 < 1 600
< 1 260 Any
Patterned glass
1 260 to 2 520 < 2 100
< 1 500 Any
Wired patterned glass
1 500 to 2 520 < 1 380
a
Under exceptional production requirements, B may be less than 3 210 mm but never below 3 150 mm. In such cases,
supplied sizes are those with B < 3 150 mm.

5.1.2 Final cut sizes
Final cut sizes cover glass delivered in the final dimensions.
The minimum final cut size shall have dimensions H or B not less than 100 mm and a minimum surface area
of not less than 0,05 m².
5.2 Thickness
5.2.1 General
The actual thickness shall be the average of four measurements, taken to the nearest 0,01 mm, one taken at
the centre of each side. Measurement shall be made by means of either:
c) an instrument of the calliper micrometer type, applicable for float glass, polished wired glass and drawn
sheet glass; or
d) an instrument of the plate gauge type with a diameter of (50 ± 5) mm, applicable for patterned glass and
wired patterned glass.
5.2.2 Tolerances
The actual thickness, rounded to the nearest 0,1 mm shall not vary from the nominal thickness by more than
the tolerances shown in Tables 2 and 3.
Table 2 — Nominal thicknesses, limits and tolerances
for float glass, polished wired glass, patterned glass and wired patterned glass
Dimensions in millimetres
Thickness limits and tolerances on thickness
Nominal
Float Polished wired Patterned Wired patterned
thickness
glass glass glass glass
2 ±0,2
3 ± 0,2 ± 0,5
4 ± 0,2 ± 0,5
± 0,2 ± 0,5
6 ± 0,2 ± 0,5 ± 0,6
7 6,6 to 7,4
± 0,7
8 ± 0,3 ± 0,8 ± 0,8
9  8,0 to 10,5
10 ± 0,9
± 0,3 ± 1,0
12 ± 0,3 ± 1,5
14  ± 1,5
15 ± 1,5
± 0,5
19 ± 1,0 ± 2,0
25 ± 1,0
Key
Not manufactured
Table 3 — Nominal thicknesses, and thickness tolerances
for new antique drawn sheet glass, drawn sheet glass for renovation and drawn sheet glass
Dimensions in millimetres
Tolerance on thickness
Nominal
New antique drawn Drawn sheet glass Drawn sheet glass
thickness
sheet glass for renovation
2 ± 0,2 ± 0,2
2,8
± 0,3
3 ± 0,3 ± 0,2
± 0,3 ± 0,3 ± 0,2
5 - ± 0,3 ± 0,3
6 ± 0,3 ± 0,3 ± 0,3
8 ± 0,4 ± 0,4
10  ± 0,5
12  ± 0,6
Key
Not manufactured
5.3 Length, width, and squareness
The tolerances, t, on the nominal dimensions length, H, and width, B, is given in Table 4 for float glass and
drawn sheet glass and in Table 5 for polished wired glass and wired patterned glass and in Table 6 for
patterned glass.
Table 4 — Tolerance, t, on the nominal dimensions length and width —
Float glass and drawn sheet glass
Dimensions in millimetres
Tolerance t
Thickness Final cut sizes
Supplied size
(H, B) ≤≤ 1 500 1 500 < (H, B) ≤≤ 3 000 (H, B) > 3 000
≤≤ ≤≤
2, 2,8, 3, 4, 5, 6 ± 4,0 ± 1,0 ± 1,5 ± 2,0
8, 10, 12 ± 4,0 ± 1,5 ± 2,0 ± 2,5
15 ± 4,0 ± 2,0 ± 2,5 ± 3,0
19, 25 ± 5,0 ± 2,5 ± 3,0 ± 3,5

Table 5 — Toleran
...