ISO 128-50 - Part 50: Basic conventions for representing areas on cuts and sections

Oct 23, 2026

ISO 128-50:2001 specifies general principles for representing areas on cuts and sections in technical drawings across mechanical, electrical, architectural, and civil-engineering contexts. It applies the orthographic projection methods referenced in ISO 5456-2 and addresses reproduction requirements, including microcopying, in accordance with ISO 6428. The standard also points to related baseline rules for cuts and sections provided in ISO 128-40.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages9

Reading Time23 min

AccessFree to download

Scope

Normative references

Representation principles for cuts and sections

INTERNATIONAL STANDARD ISO 128-50 First edition 2001-04-15 Technical drawings—General principles of presentation— Part 50: Basic conventions for representing areas on cuts and sections iTeh SDAsinNs teDchnAiqD—PrinRcipVgéraWux de représentation (Pti0d: Cvnstie bh.aei)pour la représentation des surfaces sur des coupes et des sections ISO 128-50:2001 [https://standards.iteh.ai/catalog/standards/sist/f756ddf4-018d-4284-9b5b](https://standards.iteh.ai/catalog/standards/sist/f756ddf4-018d-4284-9b5b) a4a5ba8c41a1/iso-128-50-2001 Reference number ISO 128-50:2001(E) © ISO 2001 ISO 128-50:2001(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. iTeh STANDARD PREVIEW ( [standards.iteh.ai](standards.iteh.ai)) ISO 128-50:2001 [https://standards.iteh.ai/catalog/standards/sist/f756ddf4-018d-4284-9b5b](https://standards.iteh.ai/catalog/standards/sist/f756ddf4-018d-4284-9b5b) a4a5ba8c41a1/iso-128-50-2001 © ISO 2001 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.ch](copyright@iso.ch)[ ](copyright@iso.ch)[Web www.iso.ch](Web www.iso.ch) Printed in Switzerland ii © ISO 2001 – All rights reserved ISO 128-50:2001(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 3 . 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 part of ISO 128 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 128-50 was prepared by Technical Committee ISO/TC 10, Technical product documentation, Subcommittee SC 1, Basic conventions. This first edition of ISO 128-5i0TisseoTnAISON12D8:1A98R2, sDubcPlauRsesE4.V1 tE4.3Wof which it cancels and replaces. pISO 128resentaticonon: sists of the following pats,tuanedr tahereelethitle c)hnical drawings— General principles of IS

FAQs

What does ISO 128-50:2001 specify?

ISO 128-50:2001 specifies general principles for representing areas on cuts and sections in technical drawings.

Which projection and reproduction standards does it reference?

It follows orthographic projection methods specified in ISO 5456-2 and reproduction requirements, including microcopying, in line with ISO 6428.

Where are the basic rules for cuts and sections defined?

The note in the provided text indicates that the basic rules for cuts and sections are given in ISO 128-40.

Oct 23, 2026

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