ISO 6284:2023 製品の技術文書 — 構造文書 — 限界逸脱の表示 | ページ 2

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.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives ).

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. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents ).

Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html .

This document was prepared by Technical Committee ISO/TC 10, Technical product documentation, Subcommittee SC 8, Construction documentation.

This third edition cancels and replaces the second edition (ISO 6284:1996), which has been technically revised.

The main changes are as follows:

• validation of normative references;
• consideration of multiple categories of deviations;
• definitions of indications of limit deviations using building information modelling (BIM).

Introduction

Deviations are a common part of the built environment which are often left to operatives on site to resolve. With the development of prefabrication, there is recognition that control of deviations is an essential requirement to improve the quality of building and infrastructure works. It is important for architectural designers, product manufacturers and constructors to indicate limit deviations and work to these ここで, they exist.

The previous edition, ISO 6284:1996, pointed out some basic principles and ways to indicate limit deviations. It focused on graphical presentations, generally drawings, as a method for delivering construction and product information. Technically, limit deviations are about not only geometric information but also the requirements, which shall be delivered objectively by parties to a project.

The digitization of construction requires both graphical and alphanumeric information to be presented in a formal way to achieve both human-readability and machine-readability.

Data templates are a formal representation method adopted widely to describe exchange information or product specifications for machine-readability. ISO 23387 has been developed to support digital processes using formats which are machine-interpretable, based upon standardized data structures, to exchange information about any type of construction object.

This document focuses on how to provide indication methods for limit deviations that are humanly recognizable, which is essential given that humans are ultimately the decision-makers, even though more and more tasks are carried out with the assistance of computers. Therefore, this document provides two ways to indicate limit deviations:

• a) classical graphical or symbolic representations;
• b) natural language property items for data templates.

The illustrations included in this document are intended to illustrate the text and/or to provide examples of the related technical drawing specification. These illustrations are not fully dimensioned and toleranced, showing only the relevant general principles.

1 Scope

This document specifies methods for the indication of limit deviations on construction documents.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 286-1 and ISO 6707-1 and the following apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography