Road vehicles -- Product data exchange between chassis and bodywork manufacturers (BEP)

ISO 21308-2:2006 provides a set of codes for the exchange of dimensional 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; 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)

General Information

Status
Replaced
Publication Date
27-Aug-2006
Withdrawal Date
27-Aug-2006
Current Stage
9599 - Withdrawal of International Standard
Completion Date
28-Aug-2006
Ref Project

RELATIONS

Buy Standard

Standard
ISO 21308-2:2006 - Road vehicles -- Product data exchange between chassis and bodywork manufacturers (BEP)
English language
63 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

INTERNATIONAL ISO
STANDARD 21308-2
First edition
2006-09-01
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 21308-2:2006(E)
ISO 2006
---------------------- Page: 1 ----------------------
ISO 21308-2:2006(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but

shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In

downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat

accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation

parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In

the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

© ISO 2006

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2006 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 21308-2:2006(E)
Contents Page

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

Introduction ........................................................................................................................................................ v

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

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

3 Terms and definitions........................................................................................................................... 2

4 Coding system ...................................................................................................................................... 2

4.1 General................................................................................................................................................... 2

4.2 BEP code ............................................................................................................................................... 2

4.3 Type of dimension ................................................................................................................................ 2

4.4 Numbering ............................................................................................................................................. 3

4.5 Code assignment and description ...................................................................................................... 4

4.6 Priority ................................................................................................................................................... 4

4.7 Loading condition................................................................................................................................. 4

4.8 Presented in .......................................................................................................................................... 4

5 General dimensions.............................................................................................................................. 5

6 Chassis related dimensions ................................................................................................................ 9

6.1 Axle and wheel related dimensions.................................................................................................... 9

6.2 Chassis frame related dimensions ................................................................................................... 23

6.3 Cab related dimensions ..................................................................................................................... 42

7 Bodywork related dimensions........................................................................................................... 45

7.1 Sub-frame related dimensions .......................................................................................................... 45

7.2 Bodywork dimensions........................................................................................................................ 51

Annex A (informative) Corresponding codes................................................................................................ 56

Annex B (informative) Useful tools and related electronic documents...................................................... 59

Bibliography ..................................................................................................................................................... 60

Index.................................................................................................................................................................. 61

© ISO 2006 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 21308-2:2006(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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

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.

ISO 21308-2 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 6, Terms

and definitions of dimensions and masses.

ISO 21308 consists of the following parts, under the general title Road vehicles — Product data exchange

between chassis and bodywork manufacturers (BEP):
⎯ Part 1: General principles
⎯ Part 2: Dimensional bodywork exchange parameters
⎯ Part 3: General, mass and administrative exchange parameters
⎯ Part 4: Mapping to STEP application protocol 239
iv © ISO 2006 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 21308-2:2006(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. The process of

exchanging data in accordance with this part of ISO 21308 is irrelevant of IT sophistication degree. Any

medium can be used, from fax or e-mail to a STEP protocol.

Exchanging codes in accordance with the ISO 21308 series of International Standards is useful in various

situations, e.g. for design and manufacturing, technical specifications, technical drawings and leaflets.

This part of ISO 21308 uses the applicable definitions from the related ISO 612 and ISO 7656 and adds a

number of dimensional codes, together with general, mass and administrative codes.

The codes provide the basic information level, and are also the basic input parameters for a data exchange

system based on the STEP protocol.
© ISO 2006 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 21308-2:2006(E)
Road vehicles — Product data exchange between chassis and
bodywork manufacturers (BEP) —
Part 2:
Dimensional bodywork exchange parameters
1 Scope

This part of ISO 21308 provides a set of codes for the exchange of dimensional 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;

⎯ bodywork component suppliers, e.g. manufacturers of demountable bodies, cranes and loading

equipment, tipping equipment.
2 Normative references

The following referenced documents are indispensable for the application 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 21308-3 , Road vehicles — Product data exchange between chassis and bodywork manufacturers

(BEP) — Part 3: General, mass and administrative parameters
1) To be published.
© ISO 2006 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO 21308-2:2006(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.
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 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
driven 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 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 See also ISO 21308-3 and ISO 1176.
4 Coding system
4.1 General

Each dimension given in this part of ISO 21308 is assigned a code, composed of the items given below.

4.2 BEP code

A prefix “BEP”, followed by a dash (-), shall be used to avoid confusion with other coding systems.

4.3 Type of dimension

Dimension codes are used to denote length, width and height measurements along the zero X-, Y- or Z-

planes respectively, as defined in ISO 4130. They are also used to denote angle measurements.

2 © ISO 2006 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 21308-2:2006(E)

A capital letter, which denotes the type of dimension, shall be given as follows:

⎯ L – Length;
⎯ W – Width;
⎯ H – Height.

NOTE 1 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.

NOTE 2 The top of the chassis frame is chosen as the reference zero point for height measurements for objects

connected to the chassis frame.

NOTE 3 The centre-line of the chassis is chosen as the reference zero point for width measurements.

NOTE 4 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.

If there is a need to differ between the dimension(s) on the right or left side, the BEP-code should be

supplemented by R or L.
4.4 Numbering
4.4.1 General

Each item has a unique BEP-code consisting of the dimension type letter (see 4.3) 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.

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.
4.4.2 Numbering and type designation of frame-mounted objects

The same .n 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;
⎯ B – Battery box;
⎯ F – Fuel tank;
⎯ H – Hydraulic tank;
⎯ M – Exhaust muffler;
© ISO 2006 – All rights reserved 3
---------------------- Page: 8 ----------------------
ISO 21308-2:2006(E)
⎯ S – Spare wheel;
⎯ T – Tool box;
⎯ U – Urea tank.
4.5 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.
4.6 Priority
The column “Priority” shows the priority of the measurements, as follows:
⎯ A – Essential;
⎯ B – Useful.
4.7 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.
4.8 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 © ISO 2006 – All rights reserved
---------------------- Page: 9 ----------------------
ISO 21308-2:2006(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.
© ISO 2006 – All rights reserved 5
---------------------- Page: 10 ----------------------
ISO 21308-2:2006(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 front reference point for measuring.
point for
NOTE 1 Front reference point(s) for measuring is (are)
measuring
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 Distance from the first driven rear axle to the rear A - 2D, 3D, TD

reference reference point for measuring.
point for
NOTE 1 Rear reference point(s) for measuring is (are)
measuring
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.
6 © ISO 2006 – All rights reserved
---------------------- Page: 11 ----------------------
ISO 21308-2:2006(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, operating order.
unladen
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 A 1 2D, 3D, TD
overall height vehicle including bodywork.
of vehicle,
NOTE For pneumatic suspension, the highest driving
unladen
position is assumed.
© ISO 2006 – All rights reserved 7
---------------------- Page: 12 ----------------------
ISO 21308-2:2006(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, lights,
cab
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 n-th axle. A - 2D, 3D, TD

wheels on n-th
NOTE Projecting axle hubs and tyre bulges are
axle
disregarded.
8 © ISO 2006 – All rights reserved
---------------------- Page: 13 ----------------------
ISO 21308-2:2006(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 axle to the A - 2D, 3D, TD

base centre of the last axle.
© ISO 2006 – All rights reserved 9
---------------------- Page: 14 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L011
Configuration Distance between centre of first front axle to the A - 2D, 3D, TD
wheel base centre of first driven rear axle.
NOTE If the vehicle is not symmetrical, different values
for right and left hand side apply. Then mark with .R or .L,
e.g. BEP-L011.L.
10 © ISO 2006 – All rights reserved
---------------------- Page: 15 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L012.n Distance between centre of wheels on n-th and
Wheel space A - 2D, 3D, TD
from n to n+1 (n+1)-th axles.
axle
© ISO 2006 – All rights reserved 11
---------------------- Page: 16 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L013
Theoretical Distance between first front axle to calculated mass A 2 2D, TD
wheel base of line of front axle combination.
front axle
combination

BEP-L014 Theoretical Distance between first driven rear axle to calculated A 2 2D, TD

wheel base of mass line of rear axle combination.
rear axle
combination

BEP-L015 Theoretical Distance between the calculated mass lines of front A 2 2D, TD

wheel base 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 may have the following
distribution, shown in the figures below:
A = 50 %, B = 50 %, C = 60 %, D = 40 %
12 © ISO 2006 – All rights reserved
---------------------- Page: 17 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
© ISO 2006 – All rights reserved 13
---------------------- Page: 18 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-L016

Front vehicle Distance between front edge of vehicle and centre of A - 2D, 3D, TD

overhang wheel on first axle.

BEP-L017 Rear vehicle Distance between centre of last axle and rearmost A - 2D, 3D, TD

overhang part of vehicle.

BEP-L018 Front frame Distance from foremost edge of front frame to centre A - 2D, 3D, TD

overhang of first front axle.

BEP-L019 Rear frame Distance between the centre of last axle to rearmost A - 2D, 3D, TD

overhang edge of frame side member.
BEP-L020
Rear frame Distance between the centre of first driven rear axle A - 2D, 3D, TD
overhang from to rearmost edge of frame side member.
first driven
rear axle

BEP-L021 Technical Distance between calculated mass lines of rear axle B 2 2D, 3D, TD

overhang combination and rearmost edge of vehicle or
length bodywork.
EXAMPLE A and B may have the following
distribution: A = 60 %, B = 40 %
14 © ISO 2006 – All rights reserved
---------------------- Page: 19 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-H010
Approach Angle between the tangent of the rolling radius of the B 2 2D, 3D, TD
angle 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.
Additional tyre springing should be taken into account.

BEP-H011 Departure Angle between the tangent of the rolling radius of the B 2 2D, 3D, TD

angle 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.
Additional tyre springing should be taken into account.
BEP-H012 Ramp angle See ISO 612 and ISO 7656. B 2 2D, 3D, TD
BEP-H013 Ground Distance between the ground and the lowest fixed A 2 2D, 3D, TD
clearance, point between the centre of the last front axle and the
rear part rearmost part of the chassis.
NOTE Chassis loaded to permitted axle masses. For
pneumatic suspension, the drive position is assumed.
Additional tyre springing should be taken into account.
© ISO 2006 – All rights reserved 15
---------------------- Page: 20 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-H014
Ground Distance between the ground and the lowest fixed A 2 2D, 3D, TD
clearance, point between the front part of the chassis and the
front part centre of the last front axle.
NOTE Chassis loaded to permitted axle masses. For
pneumatic suspension, the drive position is assumed.
Additional tyre springing should be taken into account.

BEP-H015.n Ground Smallest vertical dimension between vehicle front A 2 2D, 3D, TD

clearance, axle(s) and ground level.
front axle(s)
NOTE Chassis loaded to permitted axle masses. For
pneumatic suspension, the drive position is assumed.
Additional tyre springing should be taken into account.
16 © ISO 2006 – All rights reserved
---------------------- Page: 21 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-H016.n
Ground Smallest vertical dimension between vehicle rear A 2 2D, 3D, TD
clearance, axle(s) and ground level.
rear axle(s)
NOTE Chassis loaded to permitted axle masses. For
pneumatic suspension, the drive position is assumed.
Additional tyre springing should be taken into account.
© ISO 2006 – All rights reserved 17
---------------------- Page: 22 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-H017
Front under- Distance between the ground and the uppermost part A 1 2D, 3D, TD
run protection, of the front under-run protection.
upper

BEP-H018 Front under- Distance between the ground and the lowest part of A 1 2D, 3D, TD

run protection, the front under-run protection.
lower

BEP-H019.n Side under- Distance between the ground and the uppermost part A 1 2D, 3D, TD

run of the side under-run protection.
protection(s),
NOTE The distance is measured at the centreline of the
upper
side under-run protection.

BEP-H020.n Side under- Distance between the ground and the lowest part of A 1 2D, 3D, TD

run the side under-run protection.
protection(s),
NOTE The distance is measured at the centreline of the
lower
side under-run protection.

BEP-H021 Rear under- Distance between the ground and the uppermost part A 1 2D, 3D, TD

run protection, of the rear under-run protection.
upper

BEP-H022 Rear under- Distance between the ground and the lowest part of A 1 2D, 3D, TD

run protection, the rear under-run protection.
lower
18 © ISO 2006 – All rights reserved
---------------------- Page: 23 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-W010.n
Steering angle Maximum steering angle of wheels. B 1 2D, 3D, TD
NOTE L/R for left or right side, n for n-th steerable axle,
lt/rt for left or right turn.
EXAMPLE BEP-W010.R.2.rt means right side,
second steerable axle, right turn.
© ISO 2006 – All rights reserved 19
---------------------- Page: 24 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-W011
Turning circle The diameter of the circle described by the 'centre' of A 2 TD
diameter the tyre of the outer steered wheel at the first front
axle at maximum steering angle.
NOTE If there is a difference between left hand and
right hand turning circle, it is marked with .R or .L - e.g.
BEP-W011.L.
BEP-W012 Clearance The diameter of the circle described by the outer A 2 TD
circle diameter edge of the vehicle at maximum steering angle.
NOTE The outer edge includes external equipment,
e.g. mirrors. If there is a difference between left hand and
right hand turning circle, it is marked with .R or .L - e.g.
BEP-W012.L.
20 © ISO 2006 – All rights reserved
---------------------- Page: 25 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-W013.n Distance between centres of the tyres of the n-th axle.
Track A 1 2D, 3D, TD
NOTE In case of twin tyres, the centre between the two
centres of the tyres on the same side is used.
BEP-W014.n
Twin tyre Distance between the centres of the two tyres of the B 1 2D, 3D, TD
distance n-th axle on one side.
© ISO 2006 – All rights reserved 21
---------------------- Page: 26 ----------------------
ISO 21308-2:2006(E)
BEP-code Assignment Description Priority Loading Presented in
BEP-W015.n Distance between the centreline of springs at the n-th
Spring track B 1 2D, 3D, TD
distance axle.
22 © ISO 2006 – All rights reserved
---------------------- Page: 27 ----------------------
ISO 21308-2:2006(E)
6.2 Chassis frame related dimensions
BEP-code Assignment Description Priority Loading Presented in

BEP- Start of Distance between the centre of the first front axle and A - 2D, 3D, TD

L030.n.t the foremost part of the n-th object mounted on the
chassis-
mounted chassis.
object, length
NOTE 1 Add .R or .L (if applicable) to specify the
mounting side, related to the centreline of the chassis.
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.