BS 5070-1:1988

Foreword
Committees responsible
Recommendations
1 Scope
2 Definitions
3 Principal types of diagrams
4 Drawing sheets
5 Principles of application
6 Lettering
7 Graphical symbols
8 Explanatory notes
9 Use of colour
10 Marking
Tables
1 Recommended drawing sheet sizes (trimmed)
2 Special elongated sheet sizes
3 General types of lines
4 Minimum character height for capital letters and
    numerals
Figures
1 Drawing sheets showing frame, title block and other
    markings
2 Terminal points and lines entering and leaving a
    drawing sheet
3 Use of thicker lines for emphasis
4 Line identification
5 Line grouping
6 Single line representation on a multi-line diagram
7 Indication of number of paths in single-line
    representation
8 Omitting lines
9 Connections entering and leaving in common line
    representation

Sets out drawing practice common to all fields on engineering diagrams. Covers layout, types of diagrams, drawing sheets, lines, lettering and graphical symbols.

This Part of BS 5070 gives recommendations for the general principles of presentation and practice to be applied to engineering diagrams of all types that depict by the use of graphic symbols the function of a system or the relationship between components and parts.

Other Parts of this British Standard give recommendations and specific definitions that are appropriate to particular engineering disciplines.

Electrotechnology diagrams are not covered.

NOTE 1 The relevant Part of BS 5775 should be complied with for the correct application of units and symbols for quantities.

NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.