ISO 22497:2021

INTERNATIONAL ISO
STANDARD 22497
First edition
2021-06
Doors, windows and curtain walling —
Curtain walling — Vocabulary
Portes, fenêtres et façades-rideaux — Façades-rideaux — Vocabulaire
Reference number
©
ISO 2021
© ISO 2021
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ii © ISO 2021 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definition . 1
Annex A (informative) Illustration of the various defined terms . 5
Bibliography .16
Index .17
Foreword
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iv © ISO 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 22497:2021(E)
Doors, windows and curtain walling — Curtain walling —
Vocabulary
1 Scope
This document provides definitions for terms used in documents, drawings, specifications, etc., when
referring to the detailed elements of curtain walling.
It provides a comprehensive, though not total, list of regular terms.
It does not set out to repeat those physical definitions properly included within individual curtain
walling standards related to performance requirements and associated test methods.
2 Normative references
There are no normative references in this document.
3 Terms and definition
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
bonded glazing
type of curtain walling where the glass is primarily retained by a perimeter seal (3.21) and maybe with
a supplementary mechanical restraint (see Figure A.8)
Note 1 to entry: Formerly known as structural sealant glazing (SSGS).
3.2
cassette construction
type of curtain walling construction comprising glazed or infilled sub-frames inserted in to a framework
of usually vertical and/or horizontal profiles
3.3
coping
component which protects the junction between the curtain walling and the roof edge from weather
(see Figure A.9)
3.4
cover cap
face cover
profiled external cover applied, usually snap fitted, over the face of the pressure plate (3.22) to provide
an architectural finish (see Figure A.1, Figure A.3 and Figure A.4)
3.5
cradle guide
gondola guide
specially profiled continuous recess or projection designed into or separately attached to the mullion
(3.20) to provide a location guide for an access cradle (see Figure A.1)
3.6
curtain walling
part of the building envelope made of a framework usually consisting of horizontal and vertical profiles,
connected together and anchored to the supporting structure of the building, and containing fixed and/
or openable infills, which provides all the required functions of an internal or external wall or part
thereof, but does not contribute to the load bearing or the stability of the structure of the building
Note 1 to entry: Curtain walling is designed as a self-supporting construction which transmits dead-loads,
imposed loads, environmental loads (wind, snow, etc.) and seismic loads to the main building structure.
Note 2 to entry: In some English speaking countries, the term “curtain wall” is also used to describe curtain
walling.
Note 3 to entry: The term “curtain wall” in English may be used for other types of external wall.
Note 4 to entry: Fixed and/or openable infills can be described as fixed and/or openable parts in some countries.
3.7
double skin curtain walling
type of curtain walling (3.6) comprising inner and outer skins and an air cavity, designed and supported
as an integrated system fulfilling the functions of the curtain walling (3.6) (see Figure A.7)
3.8
drainage hole
weep hole
opening through which water drains to the building exterior (see Figure A.3 and Figure A.11)
3.9
external glazing gasket
preformed resilient profiled length of sealing material installed between the external face of a glass
pane, insulating glass unit (3.16) or infill panel (3.14) and the surrounding frame glazing bead (3.11) or
pressure plate (3.22) (see Figure A.3 and Figure A.4)
3.10
fixing bracket
assembl
...