ISO 21308-2:2020
(Main)Road vehicles — Product data exchange between chassis and bodywork manufacturers (BEP) — Part 2: Dimensional bodywork exchange parameters
Road vehicles — Product data exchange between chassis and bodywork manufacturers (BEP) — Part 2: Dimensional bodywork exchange parameters
This document provides a set of codes for the exchange of dimensional data between truck chassis manufacturers and bodywork manufacturers. The process of exchanging the above information can involve: — chassis manufacturer; — chassis importer; — chassis dealer; — one or more bodywork manufacturers; and — bodywork component suppliers, e.g. manufacturers of demountable bodies, cranes and loading equipment, tipping equipment.
Véhicules routiers — Échange de données de produit entre les fabricants de châssis et de carrosseries (BEP) — Partie 2: Paramètres dimensionnels d'échange de carrosserie
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INTERNATIONAL ISO
STANDARD 21308-2
Second edition
2020-09
Road vehicles — Product data
exchange between chassis and
bodywork manufacturers (BEP) —
Part 2:
Dimensional bodywork exchange
parameters
Véhicules routiers — Échange de données de produit entre les
fabricants de châssis et de carrosseries (BEP) —
Partie 2: Paramètres dimensionnels d'échange de carrosserie
Reference number
ISO 21308-2:2020(E)
©
ISO 2020
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ISO 21308-2:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Published in Switzerland
ii © ISO 2020 – All rights reserved
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ISO 21308-2:2020(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Coding principles . 2
4.1 BEP codes of truck chassis and bodywork . 2
4.2 Units of BEP code values . 4
4.3 Numbering . 4
4.3.1 General. 4
4.3.2 Numbering and type designation of frame-mounted objects . 4
4.4 Code assignment and description . 5
4.5 Priority . 5
4.6 Loading condition . 5
4.7 Presented in . 5
4.8 Related XML coding . 5
5 General dimensions. 6
6 Chassis related dimensions .10
6.1 Axle and wheel related dimensions .10
6.2 Chassis frame related dimensions.24
6.3 Cab related dimensions .48
7 Bodywork related dimensions .51
7.1 Sub-frame related dimensions .51
7.2 Bodywork dimensions .58
Annex A (informative) Corresponding codes in related ISO standards .63
Annex B (normative) XML coding related to this document .66
Bibliography .85
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ISO 21308-2:2020(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
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
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
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
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).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 40,
Specific aspects for light and heavy commercial vehicles, busses and trailers.
This second edition cancels and replaces the first edition (ISO 21308-2:2006), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— addition of several new codes based on the experiences from the first edition;
— addition of Annex B showing specific XML coding for this part.
A list of all parts in the ISO 21308 series can be found on the ISO website.
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.
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ISO 21308-2:2020(E)
Introduction
Truck chassis manufacturers deal with configurations of chassis in infinite numbers of possible
combinations, and bodywork manufacturers produce highly customized superstructures on these chassis.
Bodywork manufacturers build their superstructures on chassis of several different truck brands.
The production efficiency of a specific truck chassis and its body combinations can be greatly improved
by achieving the correct technical and commercial information about the specific chassis communicated
with the bodywork manufacturer in advance. The information must be reliable and give the bodywork
manufacturer confidence to prefabricate the body or the superstructure before the chassis is delivered.
With uniform conditions, unambiguous dimensions and supplementary information can be established,
transferred and correctly interpreted by the receiver. Increased information efficiency will improve
the quality and reduce the lead times.
The ISO 21308 series specifies a generic system of codes for exchanging specific data between truck
chassis manufacturers and bodywork manufacturers, providing a platform for efficient communication
between the parties. It applies to commercial vehicles as defined in ISO 3833, having a maximum gross
vehicle mass above 3 500 kg.
Exchanging codes in accordance with the ISO 21308 series is useful in various situations, for example,
for design and manufacturing, technical specifications, technical drawings and leaflets.
The codes can be communicated via, for example spreadsheet or XML, or a data exchange system based
on the STEP protocol.
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INTERNATIONAL STANDARD ISO 21308-2:2020(E)
Road vehicles — Product data exchange between chassis
and bodywork manufacturers (BEP) —
Part 2:
Dimensional bodywork exchange parameters
1 Scope
This document provides a set of codes for the exchange of dimensional data between truck chassis
manufacturers and bodywork manufacturers.
The process of exchanging the above information can involve:
— chassis manufacturer;
— chassis importer;
— chassis dealer;
— one or more bodywork manufacturers; and
— bodywork component suppliers, e.g. manufacturers of demountable bodies, cranes and loading
equipment, tipping equipment.
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 612:1978, Road vehicles — Dimensions of motor vehicles and towed vehicles — Terms and definitions
ISO 1176, Road vehicles — Masses — Vocabulary and codes
ISO 7656:1993, Commercial road vehicles — Dimensional codes
ISO 21308-1:2018, Road vehicles — Product data exchange between chassis and bodywork manufacturers
(BEP) — Part 1: General principles
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 612, ISO 1176, ISO 7656 and
the following apply.
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/
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ISO 21308-2:2020(E)
3.1
BEP-code
code to identify a unique measurement on the truck, to make the information exchange between chassis
manufacturers and bodywork manufacturers easier without any confusion with other systems
Note 1 to entry: BEP is an abbreviation of bodywork exchange parameter.
3.2
left and right side
left side in the driving direction and right side in the driving direction
3.3
driven axle
axle marked with an X in the drawings
3.4
front edge
most forward point of the truck as delivered from the chassis manufacturer
Note 1 to entry: Usually, the front edge is the bumper.
3.5
gross vehicle mass
GVM
gross vehicle weight
GVW
technical or legal gross vehicle mass (weight) according to the legislation or regulations for the
applicable region
Note 1 to entry: See also ISO 21308-3 and ISO 1176.
4 Coding principles
4.1 BEP codes of truck chassis and bodywork
Each characteristic, related to truck chassis and bodywork, is assigned a code composed of the items
given below. A prefix “BEP”, followed by a dash (-), shall be used to avoid confusion with other coding
systems.
BEP codes are formatted according to the principles in Table 1.
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ISO 21308-2:2020(E)
Table 1 — BEP coding principles
BEP-ppMccc.n.p.q.s.t
Item Assignment Description
pp Bodywork category pp = None or 00 for codes related to vehicle chassis (this document and
ISO 21308-3)
pp = 01 for codes related to loader cranes (ISO 21308-5)
pp = 02 for codes related to hook loaders (ISO 21308-6)
pp = 03 for codes related to skip loaders (ISO 21308-7)
M Measure type A capital letter, which denotes the type of code:
H = Z direction, coordinate system in accordance with ISO 4130
L = X direction, coordinate system in accordance with ISO 4130
W = Y direction, coordinate system in accordance with ISO 4130
C = Coordinate (x,y) or (x,y,z) in the Cartesian coordinate system
M = Mass (m), or mass point (m,x,y,z)
F = Force (static or dynamic)
T = Moment (static or dynamic)
R = Radius
V = Angle
G = General
A = Administrative
ccc BEP code number Code number given by the respective part of the ISO 21308 series
.n Index number .n is used to designate object number n
.p Entity number .p is used to designate a certain set of object characteristics or entities (e.g.
dimensions, coordinates, address information)
Where both .n and .p are specified, they are given in the .n .p order.
.q Corner number .q is used to designate contour corner index number
.s Side designator L or R
.t Type designator Optional coding to describe the object type (e.g. fuel tank)
The centre of the first front axle is the reference zero point for the length measurements. In some cases
where it is convenient to use the rear axle as a reference, the first driven rear axle is used.
The top of the chassis frame is the reference zero point for height measurements for objects connected
to the chassis frame.
The centre-line of the chassis is the reference zero point for width measurements.
The height information, if dependent on the tyres, refers to the actual tyre equipment as described
according to ISO 21308-3, if not otherwise stated.
NOTE 1 Dimensions, except for radius, can be positive or negative.
Annex A provides a comparison of BEP codes, according to this document, with codes used in ISO 612
and ISO 7656.
NOTE 2 Supplementary information and support tools of this document are available on the ISO Standards
Maintenance Portal. This information can be found at the following URL: https:// standards .iso .org/ iso/ 21308.
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ISO 21308-2:2020(E)
4.2 Units of BEP code values
The following units are preferred when reporting values related to BEP codes:
— dimensions (L, W, H, R) and coordinates (x,y,z) in millimetres (mm);
— masses in kilograms (kg);
— forces in Newtons (N), or kN;
— moments in Newtonmetres (Nm), or kNm;
— angles in degrees (°).
4.3 Numbering
4.3.1 General
Each item has a unique BEP-code consisting of the dimension type letter (see 4.2) and a three-digit
sequential number, starting from 001.
The dimension codes for repeated vehicle items of the same kind on one vehicle, e.g. axles, cross-
members, frame-mounted objects, etc., are differed by an added sequential number beginning with .1
counted from the front of the vehicle and rearwards.
NOTE 1 .n is used to designate object number n.
NOTE 2 In this document, .p is used to designate a certain set of object characteristics or entities (e.g.
dimensions, coordinates, address information).
NOTE 3 Where both .n and .p are specified, BEP codes are specified in the .n .p order.
For L codes, a positive value indicates that the item is located behind the axle. A negative value indicates
that the item is located in front of the axle.
For H codes, a positive value indicates that the item is located above the top of the chassis frame. A
negative value indicates that the item is located below the top of the chassis frame.
4.3.2 Numbering and type designation of frame-mounted objects
The same .p number shall be applied to a specific frame-mounted object in terms of L, H and W
dimensions.
EXAMPLE Frame-mounted objects can be a fuel tank, referred to as BEP-L030.4, BEP-H030.4, and
BEP-W.030.4, and a battery box, referred to as BEP-L030.5, BEP-H030.5, and BEP-W030.5.
For the frame-mounted objects, an optional coding (.t) may be added to describe the object type. The
following abbreviation letters are reserved for the object types below:
— A — Air tank;
— B — Battery box;
— C — Cap/filler cap
— F — Fuel tank;
— H — Hydraulic tank;
— M — Exhaust muffler;
— S — Spare wheel;
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ISO 21308-2:2020(E)
— T — Tool box;
— U — Urea tank;
— O — Other (other objects, specified by the applicable G code in ISO 21308-3).
NOTE Letters can be combined (e.g. FC for fuel tank filler cap).
4.4 Code assignment and description
Clauses 5, 6, and 7 show the assignment of each BEP-code together with a description of its applicability
and limitations.
4.5 Priority
The column “Priority” shows the priority of the measurements, as follows:
— A — Essential;
— B — Useful.
4.6 Loading condition
The column “Loading” shows the load situation of the chassis, as follows:
— 1 — Unladen;
— 2 — Laden (design mass).
NOTE A dash (-) means that the field is not applicable.
4.7 Presented in
The column “Presented in” describes in which type of document the items can be presented, as follows:
— 2D — 2D drawing;
— 3D — 3D model;
— TD — Technical data sheet.
NOTE An empty field means that there is no specific recommendation for the presentation. It can be covered
by any kind of document. A dash (-) means that the field is not applicable.
4.8 Related XML coding
Any XML implementation for the communication of BEP codes shall follow the requirements given in
ISO 21308-1. The XML coding related to this document shall be written according to the indications in
Annex B.
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ISO 21308-2:2020(E)
5 General dimensions
BEP-code Assignment Description Priority Loading Presented in
BEP-L001 Overall length Distance from front edge of vehicle to rear A - 2D, 3D, TD
edge of vehicle, including accessories in
both front and rear ends.
NOTE See also ISO 612.
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L002 Front Distance from the centre of the first A - 2D, 3D, TD
reference front axle to the front reference point for
point for measuring.
measuring
NOTE 1 .R or .L is added if the reference
points for right and left side member differ.
NOTE 2 If the position of the reference
point is in front of the axle, the value is
negative.
NOTE 3 Front reference point(s) for
measuring is (are) defined by the chassis
manufacturer.
BEP-L003 Rear Distance from the first driven rear axle to A - 2D, 3D, TD
reference the rear reference point for measuring.
point for
NOTE 1 .R or .L is added if the reference
measuring
points for right and left side member differ.
NOTE 2 If the position of the reference
point is in front of the axle, the value is
negative.
NOTE 3 Rear reference point(s) for
measuring is (are) defined by the chassis
manufacturer.
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-H001 Maximum Distance from ground to top of cab, A 1 2D, 3D, TD
external including cab mounted parts, with the
height, chassis unladen but in operating order.
unladen
The roof hatch, if present, should be closed
and all axles should be down. For
pneumatic suspension, the highest driving
position is assumed.
BEP-H002 Maximum Distance from ground to top of cab, A 2 2D, 3D, TD
external including cab mounted parts, in laden
height, condition.
laden
The roof hatch, if present, should be closed
and all axles should be down. For
pneumatic suspension, the highest driving
position is assumed.
The chassis is laden up to "Technical gross
vehicle mass".
BEP-H003 Maximum Distance from ground to the highest point A 1 2D, 3D, TD
overall height of the vehicle including bodywork.
of vehicle,
For pneumatic suspension, the highest
unladen
driving position is assumed.
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-W001 Overall width Maximum external width of the vehicle A - 2D, 3D, TD
of chassis chassis.
with cab
NOTE Rear-view mirrors in outermost
position, lights, elastic mud flaps, tyre
bulges in the road area and snow chains
are included in the width stated. The
bodywork is not taken into account.
BEP-W002 Width across External width of cab. A - 2D, 3D, TD
cab
NOTE Mudguards and rear-view mirrors
are disregarded.
BEP-W003.n Width across External width across the wheels on the A - 2D, 3D, TD
wheels on n-th n-th axle.
axle
NOTE Projecting axle hubs and tyre
bulges are disregarded.
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ISO 21308-2:2020(E)
6 Chassis related dimensions
6.1 Axle and wheel related dimensions
BEP-code Assignment Description Priority Loading Presented in
BEP-L010 Total wheel- Distance between centre of first front A - 2D, 3D, TD
base axle to the centre of the last axle.
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L011 Configuration Distance between centre of first front A - 2D, 3D, TD
wheelbase axle to the centre of first driven rear
axle.
NOTE .R or .L is added if the vehicle is
not symmetrical and different values
for right and left hand side apply.
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L012.n Wheel space Distance between centre of wheels on A - 2D, 3D, TD
from n to n+1 n-th and (n+1)-th axles.
axle
BEP-L013 Theoretical Distance between first front axle to A 2 2D, TD
wheelbase of calculated mass line of front axle
front axle combination.
combination
BEP-L014 Theoretical Distance between first driven rear axle A 2 2D, TD
wheelbase of to calculated mass line of rear axle
rear axle combination.
combination
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L015 Theoretical Distance between the calculated mass A 2 2D, TD
wheelbase lines of front and rear axle
combinations.
NOTE 1 For a single axle, either in the
front or in the rear, the calculated mass
line is identical to the axle centre line.
NOTE 2 If there is an axle combination
either in the front or rear, the
calculated mass line is the calculated
line between the axles where the load
from the axles is focused.
NOTE 3 For air suspension systems
with electronic control, the calculated
mass line is variable while driving.
EXAMPLE A, B, C, D can have the
following distribution, shown in the
figures below:
A = 50 %, B = 50 %, C = 60 %, D = 40 %
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L016 Front vehicle Distance between front edge of vehicle A - 2D, 3D, TD
overhang and centre of wheel on first axle.
BEP-L017 Rear vehicle Distance between centre of last axle A - 2D, 3D, TD
overhang and rearmost part of vehicle.
BEP-L018 Front frame Distance from foremost edge of front A - 2D, 3D, TD
overhang frame to centre of first front axle.
BEP-L019 Rear frame Distance between the centre of last axle A - 2D, 3D, TD
overhang to rearmost edge of frame side member.
BEP-L020 Rear frame Distance between the centre of first A - 2D, 3D, TD
overhang from driven rear axle to rearmost edge of
first driven frame side member.
rear axle
BEP-L021 Technical Distance between calculated mass lines B 2 2D, 3D, TD
overhang of rear axle combination and rearmost
length edge of vehicle or bodywork.
EXAMPLE A and B can have the
following distribution:
A = 60 %, B = 40 %
BEP-V010 Approach Angle between the tangent of the B 2 2D, 3D, TD
angle rolling radius of the tyres and the
lowest fixed point of the vehicle in front
of the axle, for technical front axle mass.
NOTE Chassis loaded to permitted
axle masses. For pneumatic suspension,
the drive position is assumed.
CAUTION — Code BEP-V010 replaces
BEP-H010 from ISO 21308-2:2006,
with identical definition. Both codes
shall not be used simultaneously.
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-V011 Departure Angle between the tangent of the B 2 2D, 3D, TD
angle rolling radius of the tyres and the
lowest fixed point of the vehicle behind
the axle, for technical rear axle mass.
NOTE Chassis loaded to permitted
axle masses. For pneumatic suspension,
the drive position is assumed.
CAUTION — Code BEP-V011 replaces
BEP-H011 from ISO 21308-2:2006,
with identical definition. Both codes
shall not be used simultaneously.
BEP-V012 Ramp angle See ISO 612 and ISO 7656. B 2 2D, 3D, TD
CAUTION — Code BEP-V012 replaces
BEP-H012 from ISO 21308-2:2006,
with identical definition. Both codes
shall not be used simultaneously.
BEP-H013 Ground Distance between the ground and the A 2 2D, 3D, TD
clearance, lowest fixed point between the centre
rear part of the last front axle and the rearmost
part of the chassis.
NOTE Chassis loaded to permitted
axle masses. For pneumatic suspension,
the drive position is assumed.
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-H014 Ground Distance between the ground and the A 2 2D, 3D, TD
clearance, lowest fixed point between the front
front part part of the chassis and the centre of the
last front axle.
NOTE Chassis loaded to permitted
axle masses. For pneumatic suspension,
the drive position is assumed.
BEP-H015.n Ground Smallest vertical dimension between A 2 2D, 3D, TD
clearance, vehicle front axle(s) and ground level.
front axle(s)
NOTE Chassis loaded to permitted
axle masses. For pneumatic suspension,
the drive position is assumed.
BEP-H016.n Ground Smallest vertical dimension between A 2 2D, 3D, TD
clearance, vehicle rear axle(s) and ground level.
rear axle(s)
NOTE Chassis loaded to permitted
axle masses. For pneumatic suspension,
the drive position is assumed.
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ISO 21308-2:2020(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L022.n Tyre diameter Tyre, free diameter, on n-th axle. A 1 2D, 3D, TD
on n-th axle
BEP-W016.n Distance Distance between tyre inner edges on A - 2D, 3D, TD
between tyre n-th axle
inner edges on
NOTE Projecting axle hubs and tyre
n-th axle
bulges are disregarded.
BEP-H017 Front Distance between the ground and the A 1 2D, 3D, TD
underrun uppermost part of the front underrun
protection, protection.
upper
BEP-H018 Front Distance between the ground and the A 1 2D, 3D, TD
underrun lowest part of the front underrun
protection, protection.
lower
BEP-H019.n Side underrun Distance between the ground and the A 1 2D, 3D, TD
protection(s), uppermost part of the side underrun
upper pro
...
DRAFT INTERNATIONAL STANDARD
ISO/DIS 21308-2
ISO/TC 22/SC 40 Secretariat: UNI
Voting begins on: Voting terminates on:
2019-07-04 2019-09-26
Road vehicles — Product data exchange between chassis
and bodywork manufacturers (BEP) —
Part 2:
Dimensional bodywork exchange parameters
Véhicules routiers — Échange de données de produit entre les fabricants de châssis et de carrosseries (BEP) —
Partie 2: Paramètres dimensionnels d'échange de carrosserie
ICS: 43.080.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 21308-2:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019
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ISO/DIS 21308-2:2019(E)
ISO/DIS 21308-2:2019(E)
Contents Page
Foreword . iv
Introduction . v
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Coding principles .2
4.1 BEP codes of truck chassis and bodywork .2
4.2 Units of BEP code values .4
4.3 Numbering .4
4.3.1 General .4
4.3.2 Numbering and type designation of frame-mounted objects .4
4.4 Code assignment and description .5
4.5 Priority .5
4.6 Loading condition .5
4.7 Presented in .5
4.8 Related XML coding .6
5 General dimensions .7
6 Chassis related dimensions. 11
6.1 Axle and wheel related dimensions . 11
6.2 Chassis frame related dimensions . 28
6.3 Cab related dimensions . 48
7 Bodywork related dimensions. 52
7.1 Sub-frame related dimensions . 52
7.2 Bodywork dimensions . 59
Annex A (informative) Corresponding codes . 64
A.1 Comparison of BEP codes and other coding systems. 64
A.1.1 Length codes . 64
A.1.2 Height codes . 65
A.1.3 Width codes . 66
Annex B (informative) Useful tools and related electronic documents . 67
Annex C (normative) XML coding related to this document . 68
C.1 XML data exchange according to ISO 21308-2 . 68
C.2 ISO 21308 Part 2 XML code (excerpt of iso21308-2.xsd) . 68
Bibliography . 91
COPYRIGHT PROTECTED DOCUMENT
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All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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iii
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ISO/DIS 21308-2:2019(E)
Contents Page
Foreword . iv
Introduction . v
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Coding principles .2
4.1 BEP codes of truck chassis and bodywork .2
4.2 Units of BEP code values .4
4.3 Numbering .4
4.3.1 General .4
4.3.2 Numbering and type designation of frame-mounted objects .4
4.4 Code assignment and description .5
4.5 Priority .5
4.6 Loading condition .5
4.7 Presented in .5
4.8 Related XML coding .6
5 General dimensions .7
6 Chassis related dimensions. 11
6.1 Axle and wheel related dimensions . 11
6.2 Chassis frame related dimensions . 28
6.3 Cab related dimensions . 48
7 Bodywork related dimensions. 52
7.1 Sub-frame related dimensions . 52
7.2 Bodywork dimensions . 59
Annex A (informative) Corresponding codes . 64
A.1 Comparison of BEP codes and other coding systems. 64
A.1.1 Length codes . 64
A.1.2 Height codes . 65
A.1.3 Width codes . 66
Annex B (informative) Useful tools and related electronic documents . 67
Annex C (normative) XML coding related to this document . 68
C.1 XML data exchange according to ISO 21308-2 . 68
C.2 ISO 21308 Part 2 XML code (excerpt of iso21308-2.xsd) . 68
Bibliography . 91
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ISO/DIS 21308-2:2019(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
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. 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
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of 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).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22 Road vehicles, Subcommittee SC 40,
Specific aspects for light and heavy commercial vehicles, busses and trailers, Working Group WG 2,
Bodywork Exchange Parameters for commercial vehicles (BEP).
This second edition cancels and replaces the first edition (ISO 21308-2:2006), which has been technically
revised.
The main changes compared to the previous edition are as follows:
⎯ Addition of several new codes based on the experiences from the first edition;
⎯ Addition of Annex C showing specific XML coding for this part.
A list of all parts in the ISO 21308 series can be found on the ISO website.
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.
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ISO/DIS 21308-2:2019(E)
Introduction
Truck chassis manufacturers deal with configurations of chassis in infinite numbers of possible
combinations, and bodywork manufacturers produce highly customized superstructures on these
chassis. Bodywork manufacturers build their superstructures on chassis of several different truck
brands.
The production efficiency of a specific truck chassis and its body combinations can be greatly improved
by achieving the correct technical and commercial information about the specific chassis communicated
with the bodywork manufacturer in advance. The information has to be reliable and give the bodywork
manufacturer confidence to prefabricate the body or the superstructure before the chassis is delivered.
With uniform conditions, unambiguous dimensions and supplementary information can be established,
transferred and correctly interpreted by the receiver. Increased information efficiency will improve the
quality and reduce the lead times.
ISO 21308 specifies a system of codes to exchange specific data between chassis and bodywork
manufacturers, providing a platform for efficient communication between the parties.
Exchanging codes in accordance with the ISO 21308 standard series is useful in various situations, e.g.
for design and manufacturing, technical specifications, technical drawings and leaflets.
The codes can be communicated via e.g. spreadsheet or XML, or a data exchange system based on the
STEP protocol.
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DRAFT INTERNATIONAL STANDARD ISO/DIS 21308-2:2019(E)
Road vehicles — Product data exchange between chassis and
bodywork manufacturers (BEP) — Part 2: Dimensional
bodywork exchange parameters
1 Scope
This document series describes a generic system for the exchange of data between truck chassis
manufacturers and bodywork manufacturers. It applies to commercial vehicles as defined in ISO 3833,
having a maximum gross vehicle mass above 3 500 kg.
The process of exchanging the above information can involve:
⎯ chassis manufacturer;
⎯ chassis importer;
⎯ chassis dealer;
⎯ one or more bodywork manufacturers; and
⎯ bodywork component suppliers, e.g. manufacturers of demountable bodies, cranes and loading
equipment, tipping equipment.
This document provides a set of codes for the exchange of dimensional data between truck chassis
manufacturers and bodywork manufacturers.
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 612:1978, Road vehicles — Dimensions of motor vehicles and towed vehicles — Terms and definitions
ISO 1176, Road vehicles — Masses — Vocabulary and codes
ISO 3833, Road vehicles — Types — Terms and definitions
ISO 4130, Road vehicles — Three-dimensional reference system and fiducial marks — Definitions
ISO 7656:1993, Commercial road vehicles — Dimensional codes
ISO 21308-1, Road vehicles — Product data exchange between chassis and bodywork manufacturers (BEP)
— Part 1: General principles
ISO 21308-3, Road vehicles — Product data exchange between chassis and bodywork manufacturers
(BEP) — Part 3: General, mass and administrative parameters
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ISO/DIS 21308-2:2019(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 612, ISO 1176, ISO 7656,
ISO 21308-3, and the following definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
BEP-code
code to identify a unique measurement on the truck, to make the information exchange between chassis
manufacturers and bodywork manufacturers easier without any confusion with other systems
Note 1 to entry: BEP is an abbreviation of Bodywork Exchange Parameter.
3.2
left and right side
left side in the driving direction and right side in the driving direction
3.3
driven axle
axle marked with an X in the drawings
3.4
non-driven axle
axle, such as steered or tag axle, marked with an O in the drawings
3.5
front edge
most forward point of the truck as delivered from the chassis manufacturer
Note 1 to entry: Usually, the front edge is the bumper.
3.6
gross vehicle mass
GVM
gross vehicle weight
GVW
technical or legal gross vehicle mass (weight) according to the legislation or regulations for the applicable
region
Note 1 to entry: See also ISO 21308-3 and ISO 1176.
4 Coding principles
4.1 BEP codes of truck chassis and bodywork
Each characteristic, related to truck chassis and bodywork, is assigned a code composed of the items
given below. A prefix “BEP”, followed by a dash (-), shall be used to avoid confusion with other coding
systems.
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ISO/DIS 21308-2:2019(E)
BEP codes are formatted according to the principles in Table 1.
Table 1 — BEP coding principles
BEP-ppMccc.n.p.q.s.t
Item Assignment Description
pp Bodywork pp = None or 00 for codes related to vehicle chassis (ISO 21308-2 and
category ISO 21308-3)
pp = 01 for codes related to loader cranes (ISO 21308-5)
pp = 02 for codes related to hook loaders (ISO 21308-6)
pp = 03 for codes related to skip loaders (ISO 21308-7)
M Measure type A capital letter, which denotes the type of code:
H = Z direction, coordinate system in accordance with ISO 4130
L = X direction, coordinate system in accordance with ISO 4130
W = Y direction, coordinate system in accordance with ISO 4130
C = Coordinate (x,y) or (x,y,z) in the Cartesian coordinate system
M = Mass (m), or mass point (m,x,y,z)
F = Force (static or dynamic)
T = Moment (static or dynamic)
R = Radius
V = Angle
G = General
A = Administrative
ccc BEP code number Code number given by the standard
.n Index number .n is used to designate object number n
.p Entity number .p is used to designate a certain set of object characteristics or entities (e.g.
dimensions, coordinates, address information)
Where both .n and .p are specified, they are given in the .n .p order.
.q Corner number .q is used to designate contour corner index number
.s Side designator L or R
.t Type designator Optional coding to describe the object type (e.g. fuel tank)
The centre of the first front axle is chosen as a reference zero point for the length measurements. In some
cases where it is convenient to use the rear axle as a reference, the first driven rear axle is used.
The top of the chassis frame is chosen as the reference zero point for height measurements for objects
connected to the chassis frame.
The centre-line of the chassis is chosen as the reference zero point for width measurements.
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ISO/DIS 21308-2:2019(E)
The height information, if dependent on the tyres, refers to the actual tyre equipment as described
according to ISO 21308-3, if not otherwise stated.
NOTE Dimensions, except for radius, can be positive or negative.
4.2 Units of BEP code values
The following units are preferred when reporting values related to BEP codes:
⎯ dimensions (L, W, H, R) and coordinates (x,y,z) in millimetres (mm);
⎯ masses in kilograms (kg);
⎯ forces in Newtons (N), or kN;
⎯ moments in Newtonmetres (Nm), or kNm;
⎯ angles in degrees (°).
4.3 Numbering
4.3.1 General
Each item has a unique BEP-code consisting of the dimension type letter (see 4.2) and a three-digit
sequential number, starting from 001.
The dimension codes for repeated vehicle items of the same kind on one vehicle, e.g. axles, cross-
members, frame-mounted objects, etc., are differed by an added sequential number beginning with .1
counted from the front of the vehicle and rearwards.
NOTE 1 .n is used to designate object number n.
NOTE 2 In this part of ISO 21308, .p is used to designate a certain set of object characteristics or entities (e.g.
dimensions, coordinates, address information).
NOTE 3 Where both .n and .p are specified, BEP codes are specified in the .n .p order.
For L codes, a positive value indicates that the item is located behind the axle. A negative value indicates
that the item is located in front of the axle.
For H codes, a positive value indicates that the item is located above the top of the chassis frame. A
negative value indicates that the item is located below the top of the chassis frame.
4.3.2 Numbering and type designation of frame-mounted objects
The same .p number shall be applied to a specific frame-mounted object in terms of L, H and W
dimensions.
EXAMPLE Frame-mounted objects may be a fuel tank, referred to as BEP-L030.4, BEP-H030.4, and
BEP-W.030.4, and a battery box, referred to as BEP-L030.5, BEP-H030.5, and BEP-W030.5.
For the frame-mounted objects, an optional coding (.t) may be added to describe the object type. The
following abbreviation letters are reserved for the object types below:
⎯ A – Air tank;
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ISO/DIS 21308-2:2019(E)
⎯ B – Battery box;
⎯ C – Cap / Filler Cap
⎯ F – Fuel tank;
⎯ H – Hydraulic tank;
⎯ M – Exhaust muffler;
⎯ S – Spare wheel;
⎯ T – Tool box;
⎯ U – Urea tank;
⎯ O – Other (Other objects, specified by the applicable G code in ISO 21308-3).
NOTE Letters may be combined (e.g. FC for Fuel tank filler cap).
4.4 Code assignment and description
Clauses 5, 6, and 7 of this part of ISO 21308 show the assignment of each BEP-code together with a
description of its applicability and limitations.
4.5 Priority
The column “Priority” shows the priority of the measurements, as follows:
⎯ A – Essential;
⎯ B – Useful.
4.6 Loading condition
The column “Loading” shows the load situation of the chassis, as follows:
⎯ 1 – Unladen;
⎯ 2 – Laden (design mass).
NOTE A dash (-) means that the field is not applicable.
4.7 Presented in
The column “Presented in” describes in which type of document the items can be presented, as follows:
⎯ 2D – 2D drawing;
⎯ 3D – 3D model;
⎯ TD – Technical data sheet.
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ISO/DIS 21308-2:2019(E)
NOTE An empty field means that there is no specific recommendation for the presentation. It can be covered
by any kind of document. A dash (-) means that the field is not applicable.
4.8 Related XML coding
Any XML implementation for the communication of BEP codes shall follow the requirements given in ISO
21308-1. The XML coding related to this document shall be written according to the indications in Annex
C.
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ISO/DIS 21308-2:2019(E)
5 General dimensions
BEP-code Assignment Description Priority Loading Presented in
BEP-L001 Overall length Distance from front edge of vehicle to rear edge of A - 2D, 3D, TD
vehicle, including accessories in both front and rear
ends.
NOTE See also ISO 612.
BEP-L001
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ISO/DIS 21308-2:2019(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L002 Front Distance from the centre of the first front axle to the A - 2D, 3D, TD
reference point front reference point for measuring.
for measuring
NOTE 1 Front reference point(s) for measuring is
(are) defined by the chassis manufacturer.
NOTE 2 If the reference points for right and left side
member differ, then mark with .R or .L.
NOTE 3 If the position of the reference point is in
front of the axle, the value is negative.
BEP-L003 Rear reference Distance from the first driven rear axle to the rear A - 2D, 3D, TD
point for reference point for measuring.
measuring
NOTE 1 Rear reference point(s) for measuring is
(are) defined by the chassis manufacturer.
NOTE 2 If the reference points for right and left side
member differ, then mark with .R or .L.
NOTE 3 If the position of the reference point is in
front of the axle, the value is negative.
BEP-L002
BEP-L003
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ISO/DIS 21308-2:2019(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-H001 Maximum Distance from ground to top of cab, including cab A 1 2D, 3D,TD
external mounted parts, with the chassis unladen but in
height, unladen operating order.
NOTE The roof hatch, if present, should be closed.
All axles should be down. For pneumatic suspension,
the highest driving position is assumed.
BEP-H002 Maximum Distance from ground to top of cab, including cab A 2 2D, 3D, TD
external mounted parts, in laden condition.
height, laden
NOTE The chassis is laden up to "Technical gross
vehicle mass". The roof hatch, if present, should be
closed. All axles should be down. For pneumatic
suspension, the highest driving position is assumed.
BEP-H003 Maximum Distance from ground to the highest point of the vehicle A 1 2D, 3D, TD
overall height including bodywork.
of vehicle,
NOTE For pneumatic suspension, the highest
unladen
driving position is assumed.
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BEP-H001
BEP-H002
BEP-H003
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ISO/DIS 21308-2:2019(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-W001 Overall width Maximum external width of the vehicle chassis. A - 2D, 3D, TD
of chassis with
NOTE Rear-view mirrors in outermost position,
cab
lights, elastic mud flaps, tyre bulges in the road area and
snow chains are included in the width stated. The
bodywork is not taken into account.
BEP-W002 Width across Ext
...
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