ISO 24084:2022

INTERNATIONAL ISO
STANDARD 24084
First edition
2022-11
Curtain walling — Inter-storey
displacement resistance — Test
method
Reference number
© ISO 2022
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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
Foreword
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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
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
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
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
...