ISO/DIS 1288-3

Glazing in building -- Determination of the bending strength of glass

Verre dans la construction -- Détermination de la résistance du verre à la flexion

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD ISO/DIS 1288-3
ISO/TC 160/SC 2 Secretariat: ANSI
Voting begins on Voting terminates on
2001-04-26 2001-09-26

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • • ORGANISATION INTERNATIONALE DE NORMALISATION

Glazing in building — Determination of the bending
strength of glass —
Part 3:
Test with specimen supported at two points (four-point bending)

Verre dans la construction — Détermination de la résistance du verre à la flexion —

Partie 3: Essais avec éprouvettes supportées en deux points (flexion quatre points)

ICS 81.040.20

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© International Organization for Standardization, 2001
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ISO/DIS 1288-3
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ISO/DIS 1288-3
Contents

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

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

3 Terms and definitions....................................................................................................................................1

4 Symbols (and abbreviated terms) ................................................................................................................2

5 Apparatus .......................................................................................................................................................2

5.1 Testing machine.............................................................................................................................................2

5.2 Measuring instruments .................................................................................................................................3

6 Sample ............................................................................................................................................................3

6.1 Number of specimens ...................................................................................................................................3

6.2 Specimen dimensions...................................................................................................................................3

6.3 Specimen condition and treatment..............................................................................................................3

6.4 Adhesive film..................................................................................................................................................4

7 Procedure .......................................................................................................................................................4

7.1 Measuring width and thickness of each specimen ....................................................................................4

7.2 Bending test ...................................................................................................................................................5

8 Evaluation.......................................................................................................................................................5

8.1 General............................................................................................................................................................5

8.2 Bending strength of the surface area, edges included..............................................................................5

8.3 Bending strength of the edges.....................................................................................................................5

9 Test report ......................................................................................................................................................6

© ISO 2001 – All rights reserved iii
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ISO/DIS 1288-3
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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.

Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this part of ISO (XYZ) may be the subject of patent

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

International Standard ISO (XYZ)-3 was prepared by Technical Committee ISO/TC 160, Glazing in buildings,

Subcommittee SC 2,WG1.

ISO (XYZ) consists of the following parts, under the general title Glazing in building — Determination of the

bending strength of glass:
 Part 1: Fundamentals of testing glass

 Part 2: Coaxial double ring test on flat specimens with large test surface areas

 Part 3: Test with specimen supported at two points (four point bending)
 Part 4: Testing of channel shaped glass

 Part 5: Coaxial double ring test on flat specimens with small or medium test surface areas

This Standard has been based on EN 1288-3 Glass in building - Determination of the bending strength of glass" -

Part 3: Test with specimen supported at two points (four point bending) prepared by Technical Committee

CEN/TC 129 "Glass in building"/WG8 "Mechanical Strength".
iv © ISO 2001 – All rights reserved
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DRAFT INTERNATIONAL STANDARD ISO/DIS 1288-3
Glazing in building — Determination of the bending strength of
glass — Part 3: Test with specimen supported at two points
(four-point bending)
1 Scope

This International Standard specifies a method for determining the bending strength, including the effects of the

edges, of flat glass for use in building. The method specified can also be used to determine the bending strength

of the edges of glass separately.

The limitations of this part of this International Standard are described in ISO (XYZ)-1.

ISO (XYZ)-1 should be read in conjunction with this part of this International Standard.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of

this part of ISO (XYZ). For dated references, subsequent amendments to, or revisions of, any of these publications

do not apply. However, parties to agreements based on this part of ISO (XYZ) are encouraged to investigate the

possibility of applying the most recent editions of the normative documents indicated below. For undated

references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain

registers of currently valid International Standards.

ISO 48, Rubber, vulcanised or thermoplastic—Determination of hardness (hardness between 10 IRHD and 100

IRHD)

ISO (XYZ)-1, Glass in building—Determination of the bending strength of glass—Part 1: Fundamentals of testing

glass

EN 572-1, Glass in building—Basic soda lime silicate glass products—Part 1: Definitions and general physical and

mechanical properties

NOTE: In the absence of ISO standards for basic and processed glass products for use in building reference is

made to relevant CEN standards
3 Terms and definitions

For the purposes of this part of ISO (XYZ), the following terms and definitions apply.

3.1
bending stress
the tensile bending stress induced in the surface of a specimen
NOTE For testing purposes, the bending stress
...