Bsi bs en 01729 1 2015 (2016)

BS EN 1729-1:2015
Incorporating
August 2016
BS ENcorrigendum
1729-1:2015

BSI Standards Publication

Furniture — Chairs and tables
for educational institutions
Part 1: Functional dimensions


BS EN 1729-1:2015

BRITISH STANDARD
National foreword
This British Standard is the UK implementation of EN 1729-1:2015,
incorporating corrigendum August 2016. It supersedes BS EN 1729-1:2006
which is withdrawn.
The start and finish of text introduced or altered by corrigendum
is indicated in the text by tags. Text altered by CEN corrigendum
August 2016 is indicated in the text by .
The UK participation in its preparation was entrusted by Technical
Committee FW/0, Furniture, to Subcommittee FW/0/4, Educational
Furniture.
A list of organizations represented on this subcommittee can be
obtained on request to its secretary.
This publication does not purport to include all the necessary provisions
of a contract. Users are responsible for its correct application.
© The British Standards Institution 2016.

Published by BSI Standards Limited 2016
ISBN 978 0 580 95124 4
ICS 97.140

Compliance with a British Standard cannot confer immunity from
legal obligations.
This British Standard was published under the authority of the Standards
Policy and Strategy Committee on 31 December 2015.

Amendments/corrigenda issued since publication
Date

Text affected

Implementation of CEN corrigendum August 2016


BS EN 1729-1:2015

EN 1729-1

EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM

December 2015

ICS 97.140

Incorporating corrigendum August 2016

Supersedes EN 1729-1:2006
Supersedes EN 1729-1:2006

English Version

Furniture - Chairs and tables for educational institutions Part 1: Functional dimensions

Ameublement - Sièges et tables pour établissements
d'enseignement - Partie 1 : Dimensions fonctionnelles

This European Standard was approved by CEN on 3 October 2015.

Möbel - Stühle und Tische für Bildungseinrichtungen Teil 1: Funktionsmaße

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN

All rights of exploitation in any form and by any means reserved
worldwide for CEN national Members.

© ISO/IEC 2016 – All rights reserved

Ref. No. EN 1729-1:2015 E

1


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Contents

Page

European foreword....................................................................................................................................................... 3
Introduction .................................................................................................................................................................... 4
1

Scope .................................................................................................................................................................... 5

2

Normative references .................................................................................................................................... 5

3

Terms and definitions ................................................................................................................................... 5

4

Functional dimensions for chairs and tables ........................................................................................ 9

5

Marking ............................................................................................................................................................ 10

6

Instructions .................................................................................................................................................... 10

7

Approval of range......................................................................................................................................... 11

Annex A (normative) Functional dimensions for chairs with slopes between −5° and +7° and
associated tables .......................................................................................................................................... 12
A.1
Functional dimensions and size marks for chairs............................................................................ 12
A.2
Functional dimensions and size marks for tables ............................................................................ 19
A.3
Legroom ........................................................................................................................................................... 20
A.4

Requirements for adjustable chairs and tables ................................................................................ 20
Annex B (normative) Functional dimensions for high chairs with double-sloped seats and
associated tables .......................................................................................................................................... 22
B.1
Functional dimensions and size marks for chairs............................................................................ 22
B.2
Functional dimensions and size marks for tables ............................................................................ 28
B.3
Legroom ........................................................................................................................................................... 29
B.4
Requirements for adjustable high chairs with double-sloped seats and tables ................... 30
Annex C (normative) Functional dimensions for standing-height tables............................................... 31

Annex D (normative) Functional dimensions for tall chairs with slopes between −5° and +7°
and associated tables .................................................................................................................................. 33
D.1
Functional dimensions and size marks for chairs............................................................................ 33
D.2
Functional dimensions and size marks for tables ............................................................................ 39
D.3
Legroom ........................................................................................................................................................... 41
D.4
Requirements for adjustable tall chairs .............................................................................................. 42

Annex E (normative) Functional dimensions for stools and associated worksurfaces ..................... 43
E.1
Functional dimensions for stools ........................................................................................................... 43
E.2
Functional dimensions for corresponding worksurface height.................................................. 45
Annex F (normative) Determination of Point S, buttock zone, seat height, seat angles, seat

depth and armrest height.......................................................................................................................... 47
F.1
The school chair measuring device (SCMD) ....................................................................................... 47
F.2
Using the SCMD ............................................................................................................................................. 49
Annex G (informative) Guidance for the calculation of the height of adjustable chairs and
tables in Annex A, Annex B and Annex D ............................................................................................. 56

Annex H (informative) Guidance for the calculation of the height of chairs and tables in
Annex B ............................................................................................................................................................ 57

Annex I (informative) Rationale ............................................................................................................................ 59

Bibliography ................................................................................................................................................................. 70

2


BS EN 1729-1:2015
EN 1729-1:2015 (E)

European foreword
This document (EN 1729-1:2015) has been prepared by Technical Committee CEN/TC 207 “Furniture”,
the secretariat of which is held by UNI.

This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2016 and conflicting national standards shall be
withdrawn at the latest by June 2016.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN 1729-1:2006.

Compared to EN 1729-1:2006, the following modifications have been made:
a) addition of an annex for functional dimensions of tall chairs (Annex D);

b) addition of an annex for functional dimensions of stools and associated worksurfaces (Annex E);

c) key dimensions of chairs in Annexes A and D are measured using the school chair measuring device
(see Annex F), some of them when the chair is loaded with specified loads;
d) a rationale for the functional dimensions of chairs and tables is provided (Annex I).
EN 1729 is composed of the following parts:

— Part 1: Functional dimensions [the present document];

— Part 2: Safety requirements and test methods.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

3


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Introduction
This part of EN 1729 is based on the principle that chairs and tables, intended for use in educational
institutions for general-purpose education, should be designed to encourage good postures.

This part of EN 1729 takes selected national standards into consideration.

It does not specify design, but only those dimensions which promote good posture for either fixed or
adjustable furniture. The dimensional requirements of this European Standard permit various
interpretations of design; hence customs, educational practices, technical and financial circumstances of
individual countries can be satisfied. It includes a rationale for the determination of functional
dimensions.

The minimum dimensions specified are considered as the absolute minimum. They can be exceeded.
The maximum dimensions specified are considered as the absolute maximum; smaller dimensions can
be used.
EN 1729-2 specifies safety requirements and test methods.

4


BS EN 1729-1:2015
EN 1729-1:2015 (E)

1 Scope
This European Standard specifies functional dimensions and markings for all chairs, stools and tables,
for educational institutions, including fixed and adjustable chairs and tables.

It applies to both un-upholstered and upholstered chairs and stools as well as to both non-swivel and
swivel chairs. It applies to furniture for use with laptop computers or portable devices.

It does not apply to ranked seating or special purpose workstations.
It does not apply to furniture used by teaching personnel.

Annex A (normative) includes single-sloped chairs and associated tables.

Annex B (normative) includes double-sloped high chairs and associated tables.
Annex C (normative) includes standing-height tables.

Annex D (normative) includes tall chairs and associated tables.

Annex E (normative) includes stools and associated worksurfaces.

Annex F (normative) includes measurement methods.

Annex G (informative) includes guidance on size marks for adjustable chairs and tables.

Annex H (informative) includes guidance on calculating heights of double-sloped chairs and associated
tables.
Annex I (informative) includes a rationale for functional dimensions.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

EN 1729-2, Furniture - Chairs and tables for educational institutions - Part 2: Safety requirements and test
methods

3 Terms and definitions

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

3.1
median plane
vertical plane running from front to rear through the centre of the seat, dividing the chair into two equal
parts

Note 1 to entry:

See Figure 1.

Note 1 to entry:

See Figure 1.

3.2
transverse plane
vertical plane perpendicular to the median plane passing through the centre of the seat

5


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Key
1
2

median plane

transverse plane

Figure 1 — Illustration of the median and transverse planes

3.3
most forward point of the backrest (Point S)
most forward point in the specified range of the backrest on the median plane
Note 1 to entry:

Note 2 to entry:

The specified range of the backrest is shown in Table F.2.

See Figure A.3, Figure B.3 and Figure D.3.

3.4
adjustable furniture
furniture that can be adjusted by the users (pupils), without the need for tools

3.5
multi-size furniture
furniture that is adjustable at installation (not by the users) to change dimensions from one size mark
to another

3.6
double-sloped seat
seat intended for sitting using either the front part of the seat (leaning forward) or the rear part of the
seat (leaning backward), with the feet resting on a footrest or the floor

Note 1 to entry:

See Figure 5 and Figure B.5.

Note 1 to entry:

See Figure 2, Figure 3, Figure 4 and Figure 5.

3.7
inclination of a single-sloped seat and of the front part of a double-sloped seat (α)
angle formed by the front part of the seat and the horizontal

6


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Key
1
2

front

α < 0° (negative for rearward-sloping seats)

Figure 2 — Example of a single-sloped seat with a negative seat angle

Key
1

2

front

α > 0° (positive for forward-sloping seats)

Figure 3 — Example of a single-sloped seat with a positive seat angle

Key
1

front

3

α < 0°

2

α > 0°

Figure 4 — Examples of a single-sloped tiltable seat

7


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Key

1

front

3

δ < 0°

2

α > 0°

Figure 5 — Example of a double-sloped seat (see Annex B)

3.8
inclination of the rear part of a double-sloped seat (δ)
angle formed by the horizontal and the rear part of the seat, determined in the median plane
Note 1 to entry:

See Figure 5.

3.9
stool
seating without backrest or armrests and intended for use for short periods

Note 1 to entry: See Figure 6. The seat height to the footrest, h8, can be to one size mark and the seat height to
the floor, h8, can be to another size mark, as defined in Table E.1.

Note 2 to entry: Any upward extension at the back of the stool below the Point S range specified in Table F.2
cannot be considered to be a backrest and the seating can be considered to be a stool (see Figure E.3).

Key
1

footrest

h10

total stool height

h8

8

seat height for stools as specified in Table E.1

Figure 6 — Stools with and without footrest


BS EN 1729-1:2015
EN 1729-1:2015 (E)

3.10
tall chair
chair with the height of seat from the floor higher than the seat height specified in Table A.1 and with a
footrest as shown in the figure below
Note 1 to entry:

See Figure 7.

Key
1

Point S

h8

seat height for tall chair as specified in Table D.1

2

footrest

Figure 7 — Tall chair with footrest

3.11
school chair measuring device
SCMD
measuring device intended for determining Point S, buttock zone and chair dimensions of school chairs
Note1 to entry:

Details of the SCMD and the method of use are given in Annex F.

4 Functional dimensions for chairs and tables

The functional dimensions and corresponding size marks and colour codes for chairs with slopes
between −5° and +7° and associated tables shall be as specified in the normative Annex A.

The functional dimensions and corresponding size marks and colour codes for high chairs with doublesloped seats and associated tables shall be as specified in the normative Annex B.
The functional dimensions and corresponding size marks and colour codes for standing-height tables

shall be as specified in normative Annex C.

The functional dimensions and corresponding size marks and colour codes for tall chairs shall be as
specified in the normative Annex D. Tables suitable for tall chairs cannot be size marked. Tables shall
correspond to the height of tall chairs as in Table D.2.
9


BS EN 1729-1:2015
EN 1729-1:2015 (E)

The functional dimensions and corresponding size marks and colour codes for stools shall be as
specified in the normative Annex E. Worksurfaces shall correspond to the height of stools as in
Table E.3.
Adjustable and multi-size furniture shall fulfil the requirements specified in Annex A, Annex B, Annex C,
Annex D or Annex E.

The stature and popliteal height ranges shown in Table A.1, Table A.2, Table B.1, Table B.2, Table C.1
and Table D.1 do not include any allowance for shoes. All chair and table heights include an allowance
for shoes.
Assessment needs to be carried out according to EN 1729-1 before being tested according to EN 1729-2.

5 Marking

Chairs and tables in Annex A shall be marked as 0 to 7. Chairs and tables in Annex B shall be marked as
B0 to B7. Standing-height tables in Annex C shall be marked as C0 to C7. Tall chairs in Annex D shall be
marked as D0 to D7. Stools in Annex E shall be marked as E0 to E7.

The marking of fixed and adjustable chairs and tables shall be legible and indelible and shall include at
least the following information:

a) size mark or colour code or both, as specified in Annex A, Annex B, Annex C, Annex D or Annex E;
b) marking on adjustable furniture of the size marks covered;

c) name and/or trade name and/or mark and address of the manufacturer or his or her authorized
representative in full or in abbreviated form, provided the abbreviation enables the manufacturer
and/or his or her authorized representative to be identified;

d) date of production by stating at least the year and month of production.

Tall chairs shall also be marked with a reference where to find information on the table height they are
intended to be used with. This information shall be provided on a label directly or via a web address,
QR-code or other suitable application. Tables that are intended for use with tall chairs shall be marked
with their height (distance from the floor to the top of the table). This information shall be provided on
a label directly or via a web address, QR-code or other suitable application.

6 Instructions

The instructions shall be submitted with the furniture in the official languages(s) of the country where
the furniture is sold. They can be given affixed to the furniture, on a label, in a leaflet or in the
instructions for use. They shall include at least the following:
a) Size mark reference: size mark identification shall be referenced to this European Standard;
b) Maintenance instructions: including information on maintenance and cleaning;

c) Installation instructions for multi-size furniture: instructions on how to adjust the furniture to
fit a specific group of pupils;

d) Adjustability information: instructions for the users (pupils) of adjustable furniture shall include
information on how to operate the adjustments and information on how to recognize correct
settings and therefore a good posture;

e) Warning concerning the hazard when working with gas lifts: “Attention: Any repair or service
work with gas cylinders shall be carried out by trained persons only.”
10


BS EN 1729-1:2015
EN 1729-1:2015 (E)

If the height adjustment is continuous, there is no need to show each size mark explicitly. It is sufficient
to have an indication showing the size marks it covers and to have a set of clear instructions, with
drawings, on how to adjust the chair to achieve a good posture. This also applies to tables.

NOTE

Appropriate drawings or pictures can be used to reinforce the information in instruction leaflets.

7 Approval of range

In order to approve a range of chairs, stools or tables, each size mark within the range shall be
measured separately.

When assessing table top dimensions for a range of tables, if there are six or fewer different table top
shapes or sizes in the range, all table tops shall be measured. If there are more than six different table
top shapes or sizes, six shall be measured and the additional table top shapes or sizes shall be assessed
from the manufacturer’s drawings of them. The drawings shall show full details (dimensions) of each
table top and its under frame structure. The information provided shall be used to assess whether the
size of table top and legroom clearance fulfil the requirements of the standard.

The test report shall state which table tops have been measured and which have been assessed from
drawings. These drawings shall be attached to the report.

11


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Annex A
(normative)

Functional dimensions for chairs with slopes between −5° and +7° and
associated tables
A.1 Functional dimensions and size marks for chairs
The dimensions, angles, size marks and colour codes for chairs shall be as given in Table A.1. Where
dimensions are stated as ranges, the measured dimension shall be any value in this range.
All accessible edges shall be rounded or chamfered.

Room for free movement of the buttocks shall be ensured. If the backrest extends below Point S, it shall
be angled rearwards such as to maintain the buttock zone as shown in Figure A.3.

Raised edges and surfaces shall not dig into thighs. This applies to points or edges on the seat surface or
frame in front of the position indicated by the rear pins on the SCMD, outside the planes through the
rear pins which are parallel to the median plane, as shown by the shaded area in Figure A.1. This
requirement is fulfilled when these points are not higher than 15 mm above the lowest point on the seat
surface in the planes through the rear pins and parallel to the median plane for size marks 0 to 3 and
25 mm above the lowest point for size marks 4 to 7.

a) Isometric view of seat pad

b) Cross-section of seat parallel to transverse plane

Key
1

position on the seat of the rear pins of the SCMD

3

horizontal bar

2
4
e

12

raised edge or surface
top surface of seat

height of raised edges or surfaces, ≤ 15 mm for size marks 0 to 3 and ≤ 25 mm for size marks 4 to 7

Figure A.1 — Dimensions of raised seat edges


BS EN 1729-1:2015
EN
(E)
BS 1729-1:2015
EN 1729-1:2015
EN 1729-1:2015 (E)

Determination of functional dimensions
Determination
of functional
dimensions
The
determination
of the functional
dimensions of chairs is specified below. See also Figure A.2,
Figure
A.3, Figure A.4,
A.5 and Figure
A.6. If the
and/or
backrestbelow.
is adjustable
or tiltable,
the
The determination
ofFigure
the functional
dimensions
of seat
chairs
is specified
See also
Figure A.2,
seat
shall
set to

horizontal
as Figure
close as
possible
to horizontal
and the
backrest shall
be setthe
to
Figure
A.3,be
Figure
A.4,
Figure A.5orand
A.6.
If the seat
and/or backrest
is adjustable
or tiltable,
vertical
or be
as close
possible toorvertical.
If the
SCMD is used,
these shall
bethe
set backrest
after the SCMD
is placed

seat shall
set toashorizontal
as close
as possible
to horizontal
and
shall be
set to
on
the chair,
if aasload
is placed
on the SCMD
these shall
be these
set after
loading.
vertical
or asand
close
possible
to vertical.
If the SCMD
is used,
shall
be set after the SCMD is placed
on the
chair,
and of
if athe

load
is placed
on the SCMD
these
shall bethe
sethighest
after loading.
(h
) The
height
seat
is the vertical
distance
between
point on the front of the seat, as
8

determined
by the
and
Figure
A.5 andthe
Figure
A.6. point on the front of the seat, as
(h
ofSCMD,
the seat
isthe
theground.
vertical See

distance
between
highest
8) The height
determined
by the SCMD,
theseat
ground.
See
Figure A.5
and Figure
(t
) The effective
depth and
of the
is the
horizontal
distance
fromA.6.
Point S along the median plane to
4

the
edge of the
seat,of
thethe
position
which
shall be
determined

theSfront
pins to
of
(t
The effective
depth
seat isofthe
horizontal
distance
from by
Point
alongedge
the indicator
median plane
4) front
the SCMD.
See
Figure
A.5
and
Figure
A.6.
front edge of the seat, the position of which shall be determined by the front edge indicator pins of
the
SCMD.
See Figure
A.5 seat
and Figure
A.6.determined as the horizontal distance between vertical lines
of the

shall be
(b ) The width
3

. See
through
side edges
the seat
at a distance
fromhorizontal
the front of
the seatbetween
equal to vertical
half of t4lines
width
of theofseat
shallsurface
be determined
as the
distance
(b
3) Thethe
Figure
shall
include
frame from
where
it is
a continuation
or integral

the
throughA.2.
theThe
sidewidth
edgesofofthe
theseat
seat
surface
at athe
distance
the
front
of the seat equal
to halfpart
of tof
4. See
seat
surface.
Figure
A.2. The width of the seat shall include the frame where it is a continuation or integral part of the
seat
The height of the backrest is the vertical distance between the top and the bottom of the
(h ) surface.
7

backrest,
on the
median is
plane.
Figures

A.5 andbetween
A.6.
height of the
backrest
the See
vertical
distance
the top and the bottom of the
(h
7) The determined
backrest,
determined
on
the
median
plane.
See
Figures
A.5
and
A.6.
(b )) The
widthofofthe
the
backrest
is the
greatest
horizontal
distance
between

itsedges
side in
edges
in the
The width
backrest
is the
greatest
horizontal
distance
between
its side
the Point
S



4

range
as range
specified
in backrest
Table
F.2.is
The
width
ofhorizontal
the backrest
shall

includeitsthe
where
it is Sa
Backrest
as
by the
two
of the
backrest
locator
(component
12
offrame
the
SCMD
as Point
shown
(b
width
ofdefined
the
thepins
greatest
distance
between
side
edges
in the
4) The
continuation

or
integral
part
of
theThe
backrest.
A.2.
in Figure F.1).
The
width
of the
backrest
shall See
include
frame where
it is a continuation
integral
range
as specified
in Table
F.2.
width
of Figure
the the
backrest
shall include
the frame or
where
it part
is a

of the backrest.
See
Figure
A.2.

continuation
or
integral
part
of
the
backrest.
See
Figure
A.2.
(r ) The horizontal radius of the backrest shall be determined on the horizontal plane, at the same
2

height
as horizontal
Point S. See radius
Figure A.2.
of the backrest shall be determined on the horizontal plane, at the same
(r
2) The
height
as
Point
S.
See

Figure
A.2.
(α) The inclination of a single-sloped seat is the angle between the seat and the horizontal as

determined
by the SCMD
the chair. It isseat
the angle
the horizontal
and
thethe
tophorizontal
of the SCMD
(α) The inclination
of aonsingle-sloped
is thebetween
angle between
the seat
and
as
base
plate under
load.
See on
Annex
and Figure
2, angle
Figurebetween
3, Figurethe
4 and

Figure F.1.
determined
by the
SCMD
the Fchair.
It is the
horizontal
and the top of the SCMD
baseThe
plateangle
underbetween
load. See the
Annex
F and
2, Figure shall
3, Figure
4 and Figureby
F.1.
(γ)
seat
andFigure
the backrest
be determined
the SCMD on the chair

under
load.
On the
SCMD, the
it is seat

the angle
the vertical
arm
when it is by
inclined
at theon
angle
the
(γ)
The
angle
between
and between
the backrest
shall be
determined
the SCMD
the of
chair
backrest
andOn
thethe
topSCMD,
of theitbase
plate.
Seebetween
Annex Fthe
andvertical
Figure arm
F.1, Figure

Figure
under
load.
is the
angle
when itA.5
is and
inclined
at A.6.
the angle of the
backrest
and the
the baseisplate.
See Annexdistance
F and Figure
F.1, the
Figure
A.5ofand
A.6.
(o)
The width
oftop
theofarmrest
the minimum
between
sides
theFigure
armrest/armrest
pad,

measured
at 5 mm
below
the top
of the armrest.
Figurethe
A.4.sides of the armrest/armrest pad,
(o)
The width
of the
armrest
is surface
the minimum
distance See
between
measured
at 5 mm
below
the topabove
surfacethe
of the
Figure A.4.by the SCMD on the chair. On the
(p)
The height
of the
armrest
seatarmrest.
shall beSee
determined

SCMD,
is the vertical
distance between
theseat
top shall
of thebearmrests
and by
thethe
bottom
thethe
rear
pinsOn
of the
(p)
Theit height
of the armrest
above the
determined
SCMDofon
chair.
SCMD. See
F and distance
Figure F.1
and Figure
SCMD,
it is Annex
the vertical
between
the A.4.
top of the armrests and the bottom of the rear pins of the

SCMD.
Annex Ffrom
and Figure
F.1 and to
Figure
A.4. of the armrest is the maximum horizontal distance
(q)
TheSee
distance
the backrest
the front

between
Point S and
thethe
front
of the to
topthe
of front
the armrest,
the position
which is horizontal
determineddistance
by the
(q)
The distance
from
backrest
of the armrest
is theofmaximum

SCMD.
See
Figure
A.4.
between Point S and the front of the top of the armrest, the position of which is determined by the
SCMD.
See Figure
(r) The
width A.4.
between the armrests is the minimum horizontal distance between the

armrests/armrest
See Figure
(r) The width pads.
between
the A.4.
armrests is the minimum horizontal distance between the
armrests/armrest
pads.
See
Figure
A.4.
(n) The length of the armrest is the greatest length in the fore and aft direction of the armrest
horizontally
within
below the
highest
point.length
See Figure
A.4.

(n) The length
of 20
themm
armrest
is the
greatest
in the
fore and aft direction of the armrest
horizontally
within
20
mm
below
the
highest
point.
See
Figure
A.4.
(x) The distance between Point S and the back of the seat pad is the horizontal distance on the

median
between
the rear
of the
the back
seat and
theseat
vertical
of Point

S. It shall
be
(x)
The plane
distance
between
Pointedge
S and
of the
pad projection
is the horizontal
distance
on the
determined
only
if the the
backrear
of the
padseat
doesand
notthe
extend
behind
Point of
S. See
A.5 and
median
plane
between
edgeseat

of the
vertical
projection
PointFigure
S. It shall
be
Figure
A.6. only if the back of the seat pad does not extend behind Point S. See Figure A.5 and
determined
Figure A.6.
13
13


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Key
b3

width of seat

b4

width of backrest

r2

horizontal radius of backrest

t4

effective depth of seat

Figure A.2 — Key dimensions of a chair (plan view)

Key
1

Point S

t4

effective depth of seat

2

buttock zone

Figure A.3 — Key dimensions of a chair (section view) and the buttock zone (shaded area)

14


BS EN 1729-1:2015
EN 1729-1:2015 (E)

All dimensions in millimetres

Key

1

armrest

o

width of armrest

n
p
q
r

length of armrest
height of armrest above the seat

distance from backrest to front of armrest
width between armrests

Figure A.4 — Key dimensions for armrests

15


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Key
1

inclination of the table top (the maximum value for a fixed or inclinable table top is 20°)

α

inclination of single-sloped seat

2
γ

h1
h7
h8
t1
t4
x

Point S

angle between seat and backrest
height of table top
height of backrest
height of seat

depth of table top

effective depth of seat

distance between Point S and back of seat pad

Figure A.5 — Key dimensions of a chair with a negative seat angle and associated table

16


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Key
1

inclination of the table top (the maximum value for a fixed or inclinable table top is 20°)

α

inclination of single-sloped seat

2
γ

h1
h7
h8
t1
t4
x

Point S

angle between seat and backrest
height of table top

height of backrest
height of seat

depth of table top

effective depth of seat

distance between Point S and back of seat pad

Figure A.6 — Key dimensions of a chair with a positive seat angle and associated table

17


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Table A.1 — Dimensions and size marks for chairs with single-sloped seats
Size mark

All dimensions in millimetres unless otherwise stated

0

1

2

3

4

5

6

7

White

Orange

Violet

Yellow

Red

Green

Blue

Brown

Popliteal range
(without shoes)

200–250

250–280

280–315

315–355

355–405

405–435

435–485

485+

Stature range
(without shoes)

800
–950

930
–1 160

1 080
–1 210

1 190
–1 420

1 330
–1 590

1 460
–1 765

1 590
–1 880

1 740
–2 070

h8 Height of
seat ± 10

210

260

310

350

380

430

460

510

210

240

280

320

340

360

380

400

100

100

100

100

100

100

100

100

n/a

n/a

n/a

300

300

300

300

300

Colour code

t4 Effective depth of
seat ± 15 (0–2), ± 25
(3–7)
b3 Seat width (min)
x Distance between
Point S and back of
seat pad (max)
h7 Backrest height
(min)
b4 Width of backrest
(min)

r2 Horizontal radius
of backrest (min)
α Inclination of seat
γ Angle between
seat and backrest
p Height of armrest
above seat −20 to
+10
r Width between
arms
q Distance from
backrest to front
edge of armrest
(max)
o Width of armrest
(min)
n Length of armrest
(min)

18

n/a

n/a

n/a

n/a
n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

300

30

260

-5° to +7°

340

30

270

-5° to +7°

380

50

300

-5° to +7°

420

50

330

-5° to +7°

460

50

360

-5° to +7°

n/a

n/a

95° to 110°

95° to 110°

95° to 110°

95° to 110°

95° to 110°

n/a

n/a

n/a

360–410

390–440

420–470

460–510

510 - 570

n/a

n/a

n/a

n/a

20

20

20

20

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

170

n/a

n/a

190

225

80

210

250

80

230

275

80

250

300

80

BS EN 1729-1:2015
EN 1729-1:2015 (E)

A.2 Functional dimensions and size marks for tables
Table tops may be horizontal, with a fixed inclination or inclinable by the user. If the table top is user
inclinable, it shall be possible to adjust it to a horizontal position.
Table tops which are or can be inclined are recommended.

Table A.2 — Dimensions and size marks for tables for use with chairs with seat slopes between
−5° and +7°
Size mark
Colour code
Popliteal range
(without shoes)
Stature range
(without shoes)
h1 Height of top ± 20
t1 Depth of top (min)
w1 Width of top, per
person at front edge,
where pupils sit
(min)
Surface area per
person (min)
Horizontal distance
between front
legs/structure,
where pupils sit, per
person (min)

a

b
c

0

1

2

White

Orange

200–250

All dimensions in millimetres unless otherwise stated
3

4

5

6

7

Violet

Yellow

Red

Green

Blue

Brown

250–280

280–315

315–355

355–405

405–435

435–485

485+

800–950

930
–1 160

1 080

–1 210

1 190
–1 420

1 330
–1 590

1 460
–1 765

1 590
–1 880

1 740
–2 070

400

460

530

590

640

710

760

820

-

500

a

500

a

500

a

500

-

600 b

600 b

600 b

600 b

-

0,15 m2

0,15 m2

0,15 m2

0,15 m2

-

500 c

500 c

500 c

500 c

500
600

0,15 m2
500

500
600

0,15 m2
500

500
600

0,15 m2
500

Can be reduced to 400 mm (only when required by educational conditions).
Can be reduced to 550 mm (only when required by educational conditions).

Can be reduced to 450 mm (only when required by educational conditions).

a) Table for one pupil

b) Shared table

Key
t1
w1

depth of top

width of top, per person at front edge, where pupils sit

Figure A.7 — Examples of different table tops

19


BS EN 1729-1:2015

EN 1729-1:2015 (E)

A.3 Legroom
Legroom beneath the worksurfaces (tables and desks) shall be provided for each size mark in
accordance with the minimum dimensions as shown in Table A.3 and Figure A.8.

The legroom shall be measured by placing the template on the floor with its higher end in line with the
front edge of the table, where pupils sit, transversing between the legs of the table. Overlapping of
legroom templates is acceptable for a group of tables.

Key
1

front of table top

h4

height of back of legroom

h2
t2
t3

legroom height at front of table top
depth of top of legroom

depth of bottom of legroom

Figure A.8 — Legroom template

Table A.3 — Minimum legroom template dimensions for tables for use with chairs with seat
slopes between −5° and +7°
All dimensions in millimetres

Size marks
h2
h4
t2
t3

0

1

2

3

4

5

6

7

325

380

440

495

545

610

665

725

300

300

300

300

400

400

400

400

275
400

325
400

375
400

420
400

465
500

520
500

565
500

620
500

The minimum width of the legroom is given in Table A.2 (horizontal distance between front
legs/structure, where pupils sit, per person).

A.4 Requirements for adjustable chairs and tables
Adjustment controls shall:
20

BS EN 1729-1:2015
EN 1729-1:2015 (E)

a) be easily accessible to the user;

b) be possible to operate without the need for tools.

Adjustable furniture shall cover two or more size marks. It shall be possible to identify the size marks to
which the furniture can be adjusted.

Adjustable furniture (chairs and tables) designed to cover a range of size marks shall comply with the
dimensional requirements of each size mark covered (see Table A.1 and Table A.2).

Adjustments may be continuous or in fixed steps.

Examples of dimensions of adjustable chairs and tables are given in Annex G.

21


BS EN 1729-1:2015
EN 1729-1:2015 (E)

Annex B
(normative)

Functional dimensions for high chairs with double-sloped seats and
associated tables
B.1 Functional dimensions and size marks for chairs
The dimensions, angles, size marks and colour codes for chairs shall be as given in Table B.1. Where

dimensions are stated as ranges, the measured dimension shall be any value in this range.

The depth of the rear part of the seat (t6) shall not be less than 50 % of the seat depth (t4).

All accessible edges shall be rounded or chamfered.

Room for free movement of the buttocks shall be ensured. If the backrest extends below Point S, it shall
be angled rearwards so as to maintain the buttock zone as shown in Figure B.3.

Raised edges and surfaces shall not dig into thighs. They shall not be higher than 15 mm above the
lowest point on the seat surface in the transverse direction of the seat for size marks 0 to 3 and 25 mm
above the lowest point in the transverse direction for size marks 4 to 7. See Figure B.1.

Key
1

raised edge or surface

3

top surface of seat

2
e

horizontal bar

height of raised edges or surfaces, ≤ 15 mm for size marks 0 to 3 and ≤ 25 mm for size marks 4 to 7

Figure B.1 — Dimensions of raised seat edges

Determination of functional dimensions
The determination of the functional dimensions of chairs is specified below. See also Figure B.2,
Figure B.3, Figure B.4 and Figure B.5. If the seat and/or backrest is adjustable or tiltable, the seat shall
be set to horizontal or as close as possible to horizontal and the backrest shall be set to vertical or as
close as possible to vertical.
Guidance for the calculation of the height of chairs and tables can be found in Annex H (informative).

(h8) The height of the seat is the vertical distance between the highest point of the seat, in the median
plane, and the ground. See Figure B.5.
22


BS EN 1729-1:2015
EN 1729-1:2015 (E)

(t4) The effective depth of the seat is the horizontal distance from Point S along the median plane to
the front edge of the seat. See Figure B.5.
(t5) The depth of the front part of the seat shall be determined on the median plane. It is the
horizontal distance between the front edge of the seat and the apex of the seat. See Figure B.5.
(t6) The depth of the rear part of the seat shall be determined on the median plane. It is the
horizontal distance between Point S and the apex of the seat. See Figure B.5.

(b3) The width of the seat shall be determined as the horizontal distance between vertical lines
through the side edges of the seat surface at a distance from the front of the seat equal to half of t4. See
Figure B.2. The width of the seat shall include the frame where it is a continuation or integral part of the
seat surface.
(h7) The height of the backrest is the vertical distance between the top and the bottom of the
backrest, determined on the median plane. See Figure B.5.

(b4) The width of the backrest is the greatest horizontal distance between its side edges in the Point S
range as specified in Table F.2. The width of the backrest shall include the frame where it is a
continuation or integral part of the backrest. See Figure B.2.
(r2) The horizontal radius of the backrest shall be determined on the horizontal plane, at the same
height as Point S. See Figure B.2.

(α) The inclination of the front part of a double-sloped seat is measured on the median plane, as the
angle between the horizontal and the line passing through the upper part of the front edge of the seat
and the apex of the seat. See Figure 5 and Figure B.5.

(δ) The inclination of the rear part of a double-sloped seat is measured on the median plane, as the
angle between the horizontal and the line passing through the upper part of the rear edge of the seat
and the apex of the seat. See Figure 5 and Figure B.5.

(γ) The angle between the seat and the backrest is defined as the angle between the rear part of the
seat and the backrest. It is measured on the median plane, as the angle between the backrest and the
line passing through the upper part of the rear edge of the seat and the apex of the seat. See Figure B.5.

(o) The width of the armrest is the minimum distance between the sides of the armrest/armrest pad,
measured at 5 mm below the top surface of the armrest. See Figure B.4.

(p) The height of the armrest above the seat is the vertical distance between the top of the armrest
and the apex of the seat. See Figure B.4.

(q) The distance from the backrest to the front of the armrest is the maximum horizontal distance
between Point S and the front of the top of the armrest. See Figure B.4.
(r) The width between the armrests is the minimum horizontal distance between the
armrests/armrest pads. See Figure B.4.

(n) The length of the armrest is the greatest length in the fore and aft direction of the armrest

horizontally within 20 mm below the highest point. See Figure B.4.

(x) The horizontal distance between Point S and the back of the seat pad is the horizontal distance
on the median plane between the rear edge of the seat and the vertical projection of Point S. It shall be
determined only if the back of the seat pad does not extend behind Point S. See Figure B.5.

23