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BS EN ISO 128-2:2020

BS EN ISO 128-2:2020

$215.11

Technical product documentation. General principles of representation – Basic conventions for lines

Published By Publication Date Number of Pages
BSI 2020 78
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This document establishes the types of lines used in technical drawings (e.g. diagrams, plans or maps), their designations and their configurations, as well as general rules for the draughting of lines. In addition, this document specifies general rules for the representation of leader and reference lines and their components as well as for the arrangement of instructions on or at leader lines in technical documents. Annexes have been provided for specific information on mechanical, construction and shipbuilding technical drawings.

For the purposes of this document the term “technical drawing” is interpreted in the broadest possible sense encompassing the total package of documentation specifying the product (workpiece, subassembly, assembly).

PDF Catalog

PDF Pages PDF Title
2 undefined
5 European foreword
Endorsement notice
8 Foreword
9 Introduction
11 1 Scope
2 Normative references
12 3 Terms and definitions
13 4 Types of lines
4.1 General
4.2 Basic types
14 4.3 Line sub types
4.4 Variations of the basic types of lines
4.5 Combinations of lines with the same length
4.5.1 Arrangement of two or more lines parallel to each other
15 4.5.2 Arrangement of two different types of lines
4.5.3 Arrangement of two continuous lines parallel to each other with regularly recurring connecting elements between them
4.5.4 Arrangement of regularly recurring geometric pictorial elements in association with continuous lines
16 5 Line dimensions
5.1 Line width
5.2 Deviation in line width
5.3 Configuration of lines
17 6 Draughting of lines
6.1 Spacing
6.2 Junctions
6.2.1 Types
19 6.2.2 Representation
20 6.3 Location of a second line
6.4 Hierarchy of overlapping lines
21 7 Colours
8 Designation
9 Basic conventions and applications for leader lines and reference lines
9.1 Presentation of leader lines
24 9.2 Representation of reference lines
25 9.3 Indication of instructions
27 Annex A (informative) Preparation of lines by CAD systems
40 Annex B (normative) Lines on construction technical drawings
43 Annex C (informative) Examples of application on construction technical drawings
49 Annex D (normative) Types of lines and their application on mechanical engineering technical drawings
53 Annex E (informative) Examples of application on mechanical engineering technical drawings
66 Annex F (normative) Types of lines and their application on shipbuilding technical drawings
68 Annex G (informative) Application examples of the different types of lines on shipbuilding technical drawings
79 Bibliography

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BS EN ISO 128-2:2020
$215.11