Curtain walling — Inter-storey displacement resistance — Test method

This document specifies the test method to evaluate the inter-storey displacement resistance of curtain walling to three-directional seismic or wind actions when curtain walling is subjected to repeated movement. The test method allows to determine, depending on the axes of the displacement imposed: — horizontal inter-storey displacement in-plane resistance; — horizontal inter-storey out-plane displacement resistance; — vertical inter-storey in-plane displacement resistance; — combined inter-storey displacement resistance. The test method can be used to evaluate the inter-storey displacement either when it is a design requirement or to assess the relative displacement accommodated by the curtain walling assembly. This test can be addressed manually or automatically depending on the size and/or the shape of the specimen.

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Status
Published
Publication Date
15-Nov-2022
Current Stage
6060 - International Standard published
Due Date
17-May-2023
Completion Date
16-Nov-2022
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INTERNATIONAL ISO
STANDARD 24084
First edition
2022-11
Curtain walling — Inter-storey
displacement resistance — Test
method
Reference number
ISO 24084:2022(E)
© ISO 2022
---------------------- Page: 1 ----------------------
ISO 24084:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022

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

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© ISO 2022 – All rights reserved
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ISO 24084:2022(E)
Contents Page

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

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

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

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

4 Symbols and abbreviated terms..........................................................................................................................................................4

5 General and testing principle ................................................................................................................................................................. 4

6 Test apparatus and specimens ............................................................................................................................................................. 4

6.1 Configuration ........................................................................................................................................................................................... 4

6.2 Installation rig ........................................................................................................................................................................................ 5

6.3 Loading equipment ............................................................................................................................................................................. 5

6.4 Displacement measuring device ............................................................................................................................................. 5

7 Loading mode ..........................................................................................................................................................................................................5

7.1 Parallelogram method ..................................................................................................................................................................... 5

7.2 Symmetry method ............................................................................................................................................................................... 6

8 Specimen ...................................................................................................................................................................................................................... 7

9 Test procedure .......................................................................................................................................................................................................7

9.1 Preparation ................................................................................................................................................................................................ 7

9.2 Horizontal in-plane movement test ..................................................................................................................................... 8

9.2.1 Displacement transducer ............................................................................................................................................ 8

9.2.2 Pre-test ................................... ..................................................................................................................................................... 8

9.2.3 Displacement test .............................................................................................................................................................. 8

9.3 Horizontal out-plane movement test ............................................................................................................................... 10

9.3.1 Displacement transducer ......................................................................................................................................... 10

9.3.2 Load test ................................................................................................................................................................................. 10

9.4 Vertical in-plane movement test .......................................................................................................................................... 10

9.4.1 Displacement transducer ......................................................................................................................................... 10

9.4.2 Load test ................................................................................................................................................................................. 10

10 Test result and evaluation ......................................................................................................................................................................11

10.1 Calculation ............................................................................................................................................................................................... 11

10.2 Evaluation ................................................................................................................................................................................................12

11 Report ...........................................................................................................................................................................................................................12

Annex A (informative) Combined movement test method ........................................................................................................13

Annex B (informative) Evaluation criteria for the compliance to serviceability and safety

in use requirements ......................................................................................................................................................................................15

Bibliography .............................................................................................................................................................................................................................17

iii
© ISO 2022 – All rights reserved
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ISO 24084:2022(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

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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

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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).

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www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 162, Doors, windows and curtain walling.

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.
© ISO 2022 – All rights reserved
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INTERNATIONAL STANDARD ISO 24084:2022(E)
Curtain walling — Inter-storey displacement resistance —
Test method
1 Scope

This document specifies the test method to evaluate the inter-storey displacement resistance of curtain

walling to three-directional seismic or wind actions when curtain walling is subjected to repeated

movement.

The test method allows to determine, depending on the axes of the displacement imposed:

— horizontal inter-storey displacement in-plane resistance;
— horizontal inter-storey out-plane displacement resistance;
— vertical inter-storey in-plane displacement resistance;
— combined inter-storey displacement resistance.

The test method can be used to evaluate the inter-storey displacement either when it is a design

requirement or to assess the relative displacement accommodated by the curtain walling assembly.

This test can be addressed manually or automatically depending on the size and/or the shape of the

specimen.
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 3010, Bases for design of structures — Seismic actions on structures
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

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

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

vertical dimension measured from the centre of a floor slab to the centre of the next consecutive floor

slab, represented by the letter H in mm
© ISO 2022 – All rights reserved
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ISO 24084:2022(E)
3.2
inter-storey displacement

relative displacement caused for example by seismic actions or wind between two adjacent floor slabs

in horizontal in-plane axis (Y-dir.), out-plane axis (X-dir.) and vertical in-plane axis (Z-dir.), as shown in

Figure 1

Note 1 to entry: For the purpose of this standard the inter-storey displacement, which is the lateral displacement

within a storey, is to be controlled. The inter-storey displacement should be limited to restrict damage to non-

structural elements such as glass panels and curtain walling for moderate earthquake ground motions and to

control failure.

Note 2 to entry: For control of life-threatening damage in occupied buildings at the ULS, the inter-storey

displacement should be limited to certain values, depending on the materials of construction, the height of the

building, and the use of the building (see ISO 3010).
Key
1 specimen
2 floor slab
Figure 1 — Schematic diagram of X-dir., Y-dir. and Z-dir.
3.3
inter-storey displacement resistance

capability of a specimen to comply with its design criteria when and after subjected to either single-

axis inter-storey displacement (3.2) or a combination thereof, i.e. air permeability, watertightness and

resistance to wind
© ISO 2022 – All rights reserved
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ISO 24084:2022(E)
3.4
horizontal inter-storey displacement in-plane resistance

capability of a specimen to comply with its design criteria when and after subjected to Y-dir. movement

repeatedly, i.e. air permeability, watertightness and resistance to wind

Note 1 to entry: Positive displacement shall be defined as a rightward displacement of a specimen as seen from

the outdoor side of the specimen. Reversely, negative displacement shall be defined as a leftward displacement of

a specimen as seen from the outdoor side of the specimen.
3.5
horizontal inter-storey out-plane displacement resistance

capability of a specimen to comply with its design criteria when and after subjected to the X-dir.

movement repeatedly, i.e. air permeability, watertightness and resistance to wind

Note 1 to entry: Positive displacement shall be defined as an outward displacement of a specimen as seen from

the outdoor side. Reversely, negative displacement shall be defined as an inward displacement of a specimen as

seen from the outdoor side.
3.6
vertical inter-storey in-plane displacement resistance

capability of a specimen to comply with its design criteria when and after subjected to the Z-dir.

movement repeatedly, i.e. air permeability, watertightness and resistance to wind

Note 1 to entry: Positive displacement shall be defined as an upward displacement of a specimen as seen from

the outdoor side. Reversely, negative displacement shall be defined as a downward displacement of a specimen as

seen from the outdoor side.
3.7
combined inter-storey displacement resistance

capability of a specimen to comply with its design criteria when and after the movements in two or

three axes repeatedly, i.e. air permeability, watertightness and resistance to wind

3.8
horizontal in-plane displacement

relative displacement δy measured in mm in Y-dir. (Figure 5) when subjected to Y-dir. movement

3.9
horizontal out-plane displacement

relative displacement δx measured in mm in X-dir. (Figure 7) when subjected to X-dir. movement

3.10
vertical in-plane displacement

relative displacement δz measured in mm in Z- dir. (Figure 8) when subjected to Z-dir. movement

3.11
drift angle

a ratio of the relative displacement between the two adjacent floor slabs to the storey height (3.1) in

either X-dir. or Y-dir.
3.12
reliability

ability of a curtain walling to fulfil the specified requirements, during the working life, for which it has

been designed
3.13
serviceability

ability of the curtain walling to perform adequately for a normal use under all expected actions

3.14
safety in use
ability of the curtain walling to avoid exceedance of ultimate limit state
© ISO 2022 – All rights reserved
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ISO 24084:2022(E)
3.15
serviceability limit state
SLS

limit state beyond which the serviceability criteria of curtain walling are no longer satisfied

3.16
ultimate limit state
ULS

limit state beyond which curtain walling collapse, may fall down or with other forms of mechanical

failure which might endanger the safety of people
4 Symbols and abbreviated terms

For the purposes of this document, the following symbols and abbreviated terms apply.

X-dir. Inter-storey movement direction in horizontal out-plane axis
Y-dir. Inter-storey movement direction in horizontal in-plane axis
Z-dir. Inter-storey movement direction in vertical in-plane axis
ULS Ultimate limit state
SLS Serv
...

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