SIST EN ISO 128-21:2002
(Main)Technical drawings - General principles of presentation - Part 21: Preparation of lines by CAD systems (ISO 128-21:1997)
Technical drawings - General principles of presentation - Part 21: Preparation of lines by CAD systems (ISO 128-21:1997)
Specifies procedures for the calculation of the most important basic types of non-continuous lines according to ISO 128-20 and their line elements.
Technische Zeichnungen - Allgemeine Grundlagen der Darstellung - Teil 21: Ausführung von Linien mit CAD-Systemen (ISO 128-21:1997)
Dieser Teil der ISO 128 enthält Verfahren zur Berechnung der wichtigsten Grundarten von unterbrochenen Linien nach ISO 128-20 und ihrer Linienelemente.
Dessins techniques - Principes généraux de représentation - Partie 21: Préparation des traits par systemes de CAO (ISO 128-21:1997)
La présente partie de l'ISO 128 spécifie les procédures pour le calcul des plus importants types de base des traits interrompus conformément à l'ISO 128-20 et leurs éléments de traits.
Tehnične risbe - Splošna načela prikazovanja - 21. del: Priprava črt po sistemih CAD (ISO 128-21:1997)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 128-21:2002
01-februar-2002
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Technical drawings - General principles of presentation - Part 21: Preparation of lines by
CAD systems (ISO 128-21:1997)
Technische Zeichnungen - Allgemeine Grundlagen der Darstellung - Teil 21: Ausführung
von Linien mit CAD-Systemen (ISO 128-21:1997)
Dessins techniques - Principes généraux de représentation - Partie 21: Préparation des
traits par systemes de CAO (ISO 128-21:1997)
Ta slovenski standard je istoveten z: EN ISO 128-21:2001
ICS:
01.100.01 7HKQLþQRULVDQMHQDVSORãQR Technical drawings in
general
35.240.10 5DþXQDOQLãNRSRGSUWR Computer-aided design
VQRYDQMH QDþUWRYDQMH (CAD)
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SIST EN ISO 128-21:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 128-21:2002
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SIST EN ISO 128-21:2002
EUROPEAN STANDARD
EN ISO 128-21
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2001
ICS 01.100.01; 35.240.10
English version
Technical drawings - General principles of presentation - Part
21: Preparation of lines by CAD systems (ISO 128-21:1997)
Dessins techniques - Principes généraux de représentation Technische Zeichnungen - Allgemeine Grundlagen der
- Partie 21: Préparation des traits par systèmes de CAO Darstellung - Teil 21: Ausführung von Linien mit CAD-
(ISO 128-21:1997) Systemen (ISO 128-21:1997)
This European Standard was approved by CEN on 30 September 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 128-21:2001 E
worldwide for CEN national Members.
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SIST EN ISO 128-21:2002
EN ISO 128-21:2001 (E)
CORRECTED 2002-01-02
Foreword
The text of the International Standard from Technical Committee ISO/TC 10 "Technical drawings,
product definition and related documentation" of the International Organization for Standardization
(ISO), the secretariat of which is held by CMC.
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 April 2002, and conflicting national standards shall be
withdrawn at the latest by April 2002.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of the International Standard ISO 128-21:1997 has been approved by CEN as a European
Standard without any modification.
NOTE Normative references to International Standards are listed in annex ZA (normative).
2
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SIST EN ISO 128-21:2002
EN ISO 128-21:2001 (E)
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of -any of these publications
apply to this European Standard only when incorporated in it by amendment or revision. For undated
references the latest edition of the publication referred to applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated by
(mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 128-20 1996 Technical drawings - General EN ISO 128-20 2001
principles of presentation - Part 20:
Basic conventions for lines
ISO 5455 1979 Technical drawings - Scales EN ISO 5455 1994
3
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SIST EN ISO 128-21:2002
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SIST EN ISO 128-21:2002
INTERNATIONAL
STANDARD 128-21
First edition
1997-03-01
Technical drawings - General principles
of presentation -
Part 21:
Preparation of lines by CAD systems
Dessins techniques - Principes g&Graux de reprbentation -
Partie 2 7: Prbparation des traits par sys tkmes de CA0
Reference number
IS0 128-21 :I 997(E)
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SIST EN ISO 128-21:2002
IS0 128-21:1997(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
represented 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 128-21 was prepared by Technical Committee
ISOK 10, Technical drawings, product definition and related
documentation, Subcommittee SC 1, Basic conventions.
IS0 128 consists of the following parts, under the general title Technical
drawings - General principles of presentation:
Part 20: Basic conventions for lines
- Part 27: Preparation of lines by CAD systems
Part 23: Lines on construction drawings
Further parts of IS0 128 are planned, covering other general principles of
presentation including those for the application of lines within drawings of
various technical fields.
Annex A of this part of IS0 128 is for information only.
0 IS0 1997
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
Internet central@iso.ch
x.400
c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
ii
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SIST EN ISO 128-21:2002
@ IS0
IS0 128=21:1997(E)
Introduction
Today the appearance of non-continuous lines on technical drawings
prepared by computer-aided design (CAD) systems varies considerably
between different systems. For that reason the standardized rules
established by this International Standard, in addition to those in
IS0 128-20, are intended as an aid for the consistent appearance of line
elements calculated by computers and drawn by plotters.
III
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SIST EN ISO 128-21:2002
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SIST EN ISO 128-21:2002
IS0 128=21:1997(E)
INTERNATIONAL STANDARD @ IS0
General principles of presentation -
Technical drawings -
Part 21:
Preparation of lines by CAD systems
1 Scope
This part of IS0 128 specifies procedures for the calculation of the most important basic types of non-continuous
lines according to IS0 128-20 and their line elements.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part
of IS0 128. At the time of publication, the editions indicated were valid. All standards are subject to revision, and
parties to agreements based on this part of IS0 128 are encouraged to investigate the possibility of applying the
most
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