ISO/DIS 22496

Windows and pedestrian doors -- Terminology

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DRAFT INTERNATIONAL STANDARD
ISO/DIS 22496
ISO/TC 162 Secretariat: JISC
Voting begins on: Voting terminates on:
2020-04-02 2020-06-25
Windows and pedestrian doors — Terminology
ICS: 01.040.91; 91.060.50
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ISO/DIS 22496:2020(E)
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ISO/DIS 22496:2020(E)
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ii © ISO 2020 – All rights reserved
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ISO/DIS 22496:2020(E)
Contents

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

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

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

3 Terminology for Windows ...................................................................................................................... 1

4 Terminology for pedestrian doors ...................................................................................................... 11

Annex A (informative) Figures for Windows .......................................................................................... 22

Annex B (informative) Figures for pedestrian doors ............................................................................ 37

Bibliography ................................................................................................................................................... 39

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ISO/DIS 22496:2020(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

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electrotechnical standardization.

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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

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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.
iv © ISO 2020 – All rights reserved
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ISO/DIS 22496:2020(E)
Doors, windows and curtain walling — Windows and pedestrian
doors — Terminology
1 Scope

This document specifies general terminology for windows and pedestrian doors. The various terms are

illustrated with the aid of figures.
2 Normative references
There are no normative references in this document.
3 Terminology for Windows

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/
Key
1 sash
2 glazing bar
3 fixed window
4 mullion
5 head
6 frame
7 fixed light
8 jamb
9 transom
10 casement
11 glazing bead
12 sill
13 top rail
Figure 1
Note 1 to entry: See Annex A for opening functions of windows.
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ISO/DIS 22496:2020(E)
3.1
active sash/active casement

sash/casement of a multi‐light window, intended to be moved first to provide opening

Note 1 to entry: See Figure 2.
Key
1 passive casement
2 active casement
Figure 2 active sash/active casement
3.2
bottom rail
horizontal component at the bottom of a sash/ casement
3.3
bonded glazing

type of window where the glass is primarily retained by a perimeter sealant and maybe with a

supplementary mechanical restraint
3.4
casement
opening element of a hinged or pivoted window

Note 1 to entry: See Figure 2. See also Annex A for opening functions of windows.

3.5
casement window

building component for closing an opening in a wall or roof with a hinged or pivoted opening element

that may admit light and/or provide ventilation
3.6
casement or sash height/width
Key
1 overall casement or sash height
2 overall casement or sash width
Figure 3 casement or sash height/width
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ISO/DIS 22496:2020(E)
3.7
clear opening height/width
Key
1 clear opening height
2 clear opening width
Figure 4 clear opening height/width

Note 1 to entry: Certain types of hardware can protrude into the clear opening height.

3.8
closed

where the movable parts rest in or at the fixed part in a way in which they may be fastened (latched

and/or locked)
3.9
coupled window

window where casements in at least two levels are operated by one action, but can be disconnected for

specific purposes such as maintenance or cleaning
Note 1 to entry: See Figure 5.
Figure 5 coupled window
3.10
daylight opening width/height

any area in the building envelope that is capable of admitting daylight to an interior

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ISO/DIS 22496:2020(E)
3.11
direct glazing

glazing sealed to a casement frame which, when the casement is closed, is linearly mounted on at least

two edges
Note 1 to entry: See A.3
3.12
direction of rotation

the movement of a hinged or pivoted casement window around its fixing, either clockwise or counter‐

clockwise
Key
1 direction of rotation – counter‐clockwise
2 direction of rotation – clockwise
Figure 6 direction of rotation
3.13
door height window
french window
casement door
window which extends to floor level and allows access or passage for persons
3.14
double window
window with casements in at least two layers that operate independently
Figure 7 double window
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ISO/DIS 22496:2020(E)
3.15
fanlight

infill panel of glass or translucent material fitted within a window frame, above the moving

sash(es)/casement(s) and with a solid member (transom) between it and the moving part(s)

Key
1 fanlight
Figure 8 fanlight
3.16
fastened
where the movable part is restrained at one or more points
3.17
fixed light
window with infill fitted directly into the frame
Note 1 to entry: See Figure 1 and Figure A.1a.

Note 2 to entry: in some countries the term fixed light is used for fixed window

3.18
fixed window

window with infill mounted in a sash or casement construction but which differs from an openable

window only in that the hardware used does not permit the sash/casement to be opened on a regular

basis but holds the sash/casement to the frame

Note 1 to entry: A fixed window contains all the gaskets that an openable window does and these can be replaced

by dismantling the sash or casement from the frame.
Note 2 to entry: See Figure 1 and Figure A.1b.
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ISO/DIS 22496:2020(E)
3.19
frame

component forming the perimeter of a window, enabling it to be fixed to the building structure

Key
1 frame
2 casement or sash
Figure 9 frame
3.20
glazing

transparent or translucent infill, together with all the components required to hold it within a frame

3.21
glazing bar

member subdividing the glazed area into smaller panes, either physically (Georgian bar) or visually

(cross‐ or attached bar)
Note 1 to entry: See A.2 for different types of glazing bar.
3.22
glazing bead
section retaining infill within its frame

Note 1 to entry: Term “glazing stop” is also used in some countries when the infill is glass

3.23
glazing rebate platform
Key
1 glazing rebate upstand
2 glazing rebate platform
Figure 10 glazing rebate platform
Note 1 to entry: See also EN 12488.
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3.24
glazing rebate upstand
see Figure 10
3.25
head
the top horizontal member of a window frame
Note 1 to entry: See Figure 1.
3.26
infill
panel of transparent or opaque material or combination of materials
3.27
interlocking stile

a stile that is one of a pair of stiles that are designed to engage with each other in the closed position for

sliding products
3.28
jamb
a vertical side member of a window frame
3.29
latched

movable part is returned to its closed position and restrained by either a) a self‐engaging fastener or b)

a roller catch or c) a latch
Note 1 to entry: Latched is one of the fastened closing conditions (see 3.16).
3.30
locked

movable part is further restrained in the closed position by additional operations (of e.g. handle, key,

automatic devices or electronic devices) to engage integrated locking devices (e.g. nutbolts or

deadbolts) which will affect the product’s characteristics
Note 1 to entry: Locked is one of the fastened closing conditions (see 3.16).
3.31
mullion

vertical or inclined component which subdivides a frame into sashes/casements or connects two

frames
Note 1 to entry: See Figure 1.
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3.32
overall frame width/height
Key
1 overall frame height
2 overall frame width
Figure 11 overall frame width/height
3.33
passive sash
passive casement

sash/casement of a multi‐light window, intend to be moved after the active sash/casement

Note 1 to entry: See Figure 2.
3.34
pivot window
window that opens by pivoting either horizontally or vertically
Note 1 to entry: See A.1.2 for different types of pivot window.
3.35
rebate
recess in a frame, into which a moving element fits
Key
1 rebate “r”
2 rebate “R”
3 wall
Figure 12 rebate

Note 1 to entry: A rebate has two measurements, “r” the width of the rebate measured in the same plane as the

width of the casement and “R” the depth of the rebate measured in the same plane as the thickness of the moving

element.
Note 2 to entry: See B.2 for examples of different types of rebate.
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3.36
ribbon window

two or more windows which are attached to each other (either horizontally or vertically) without

supporting structure between them
3.37
roof window
skylight

window intended for installation in a roof. Roof windows/ Skylights have the same characteristics as

windows installed in walls with regard to function, cleaning, maintenance and durability

3.38
sash
opening element of a sliding window
3.39
screen

assembly of two or more windows and/or doorsets in one plane, with or without separate frames

3.40
secured

any action(s) which prevent unauthorised release of the fastening device(s) to allow exit or entry (e.g.

child safety, burglary)
3.41
sill
bottom member of a window frame
3.42
single window
window with casement or sash in only one layer
Key
1 sash/casement
2 frame
Figure 13 single window
3.43
sliding window

window with one or more sashes where at least one slides either horizontally or vertically

3.44
stile
A vertical edge member of a sash/ casement.
3.45
top rail
uppermost horizontal member of a sash/casement
Note 1 to entry: See Figure 1.
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ISO/DIS 22496:2020(E)
3.46
transom

horizontal component which subdivides a frame into sashes/casements or fixed lights

3.47
window

building component or multiple components for closing an opening in a wall or roof that may admit

light and/or provide ventilation
Note 1 to entry: See Figure 1
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ISO/DIS 22496:2020(E)
4 Terminology for pedestrian doors

Note 1 to entry: Terminology for doors also covers terminology used for inspection hatches.

Key
1 frame
2 head
3 overpanel
4 transom
5 top or head rail
6 jamb
7 glazed panel
8 flat panel
9 stile
10 midrail
11 muntin
12 bottom rail
13 threshold
Figure 14
Note 2 to entry: See B.1 for cross‐sections and opening functions of doors.
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ISO/DIS 22496:2020(E)
4.1
active leaf

leaf of a multi‐leaved hinged or pivoted doorset, intended to be moved first to provide opening

Key
1 passive leaf
2 active leaf
Figure 15 active leaf
4.2
architrave
Key
1 astragal fitted to the passive leaf
2 stop
3 frame
4 building structure
5 architrave
6 astragal fitted to the active leaf
Figure 16 architrave
4.3
astragal

small moulding attached to one opening stile of a pair of doors which, when the doors are closed will

cover the clearance gap
Note 1 to entry: See Figure 16
4.4
bottom rail
horizontal component at the bottom of a door leaf construction
Note 1 to entry: See Figure 14.
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ISO/DIS 22496:2020(E)
4.5
clear opening height

minimum clear height of the door opening, which allows unrestricted passage through the open

doorway
Key
1 clear opening height
Figure 17 clear opening height
4.6
clear passage width within the frame

Relations:

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