ISO INTERNATIONAL STANDARD 4157-1 Second edition 1998-12-01 Construction drawings Designation systems - Part 1: Buildings and parts of buildings Dessins de batiment - Systemes de désignation - Partie 1: Batiments et parties de batiments ISO Reference number ISO 4157-1:1998(E) ISO 4157-1:1998(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 liaison with isO, also take part in the work. IsO 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. International Standard ISO 4157-1 was prepared by Technical Committee ISO/TC 10, Technical drawings, product definition and related documentation, Subcommittee SC 8, Construction documentation. This second edition cancels and replaces the first edition (IsO 4157-1:1980), which has been technically revised. Part 1: Buildings and parts of buildings Part 2: Room names and numbers Part 3: Room identifiers @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic nternationalOrganizationforStandardization Casepostale56·CH-1211Geneve20·Switzerland Internet [email protected] Printed in Switzerland ii INTERNATIONAL STANDARD ISO ISO 4157-1:1998(E) Construction drawings Designation systems - Part 1: Buildings and parts of buildings 1 Scope This part of IsO 4157 specifies requirements for designation systems and a designation code for buildings, including spaces, building elements and components. 2 Normative references The following standards contain provisions, which through reference in this text, constitute provisions of this part of IsO 4157. At the time of publication, the editions indicated were valid. All standards are subject to revision, and most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IsO 4157-2:1998, Construction drawings — Designation systems — Part 2: Room names and numbers. IsO 4157-3:1998, Construction drawings—Designation systems-Part 3: Room identifiers. 3 Definitions For the purposes of this part of IsO 4157, the following definitions apply. 3.1 room area or volume, space or void bounded actually or theoretically, even though it is not traditionally thought of as a room EXAMPLES Balcony in a movie theatre Staircase (considered to be a separate room in each floor) Auditorium with folding doors Partly covered terrace Atrium (even without a roof) Ventilation shafts (considered to be a separate room on each floor) Elevator shafts (considered to be a separate room on each floor) Void in ceiling NOTE A room in the numbering context may or may not be completely enclosed by walls, ceiling, and floor. However, for a room to be allocated a room number, it should have some of these physical limitations. 1