EN ISO 5456-2:1999

SLOVENSKI STANDARD
01-februar-2002
Gradbeniške risbe - Metode projekcije - 2. del: Ortografske predstavitve (ISO 5456-
2:1996)
Technical drawings - Projection methods - Part 2: Orthographic representations (ISO
5456-2:1996)
Technische Zeichnungen - Projektionsmethoden - Teil 2: Orthogonale Darstellungen
(ISO 5456-2:1996)
Dessins techniques - Méthodes de projection - Partie 2: Représentations
orthographiques (ISO 5456-2:1996)
Ta slovenski standard je istoveten z: EN ISO 5456-2:1999
ICS:
01.100.01 7HKQLþQRULVDQMHQDVSORãQR Technical drawings in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL
IS0
STANDARD
5456-2
First edition
1996-06-I 5
Technical drawings - Projection methods -
Part 2:
Orthographic representations
Dessins techniques -
Mbthodes de projection -
Par-tie 2: Rep&en ta Cons orthographiques
Reference number
IS0 5456-2: 1996(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work of
preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for which
a technical committee has been established has the right to be rep-
resented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
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.
International Standard IS0 5456-2 was prepared by Technical Committee
lSO/TC 10, Technical drawings, product definition and related documen-
tation, Subcommittee SC 1, Basic conventions.
IS0 5456 consists of the following parts, under the general title Technical
drawings - Projection methods:
- Part 7: Synopsis
- Part 2: Orthographic representations
- Part 3: Axonome tric representations
Part 4: Central projection
Annex A forms an integral part of this part of IS0 5456.
0 IS0 1996
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 the publisher.
International Organization for Standardization
Case postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
@ IS0 IS0 5456-2: 1996(E)
Introduction
Orthographic representation in its various forms is the most widely used
method of representing technical objects in all fields of technical drawing
(mechanical, electrical, construction, etc.), and is thus considered to be the
accepted technical language.
. . .
III
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IS0 5456-2: 1996(E)
INTERNATIONAL STANDARD @ IS0
Technical drawings - Projection methods -
Part 2:
Orthographic representations
IS0 3098-I :I 974, Technical drawings - Lettering -
1 Scope
Part 7: Currently used characters.
This part of IS0 5456 specifies basic rules for the
application of orthographic representation to all types IS0 3461-2: 1987, General principles for the creation
of graphical symbols - Part 2: Graphical symbols for
of technical drawings in all technical fields, according
to the general rules specified in IS0 128, IS0 129, use in technical product documentation.
IS0 3098-1, IS0 3461-2 and IS0 5456-l.
IS0 5456-l : 1996, Technical drawings - Projection
methods - Part 7: Synopsis.
2 Normative references
IS0 10209-I : 1992, Technical product documentation
The following standards contain provisions which,
- Vocabulary - Part 7: Terms relating to technical
through reference in this text, constitute provisions of
drawings: general and types of drawings.
this part of IS0 5456. At the time of publication, the
editions indicated were valid. All standards are subject
to revision, and parties to agreements based on this
IS0 10209-2: 1993, Technical product documentation
part of IS0 5456 are encouraged to investigate the - Vocabulary - Part 2: Terms relating to projection
possibility of applying the most recent editions of the
methods.
standards indicated below. Members of IEC and IS0
maintain registers of currently valid International
Standards.
IS0 128:1982, Technical drawings - General prin-
3 Definitions
ciples of presentation.
IS0 129: 1985, Technical drawings - Dimensioning - For the purposes of this part of IS0 5456, the defi-
nitions given in IS0 5456-1, IS0 10209-I and
General principles, definitions, methods of execution
and special indications. IS0 10209-2 apply.

@ IS0
IS0 5456-2: 1996(E)
(front view). This is view A according to the direction
4 General principles
of viewing a (see figure 1 and table I), generally
showing the object in the functioning or manufactur-
4.1 General
ing or mounting position. The position of other views
relative to the principal view in the drawing depends
Orthographic representation is obtained by means of
on the projection method chosen (first angle, third
parallel orthogonal projections and results in flat, two-
angle, reference arrows). In practice, not all six views
dimensional views systematically positioned relative
(A to F) are needed. When views (cuts or sections)
to each other. To show an object completely, the
other than the principal view are necessary, t
...