1 Scope
This part of GB/T 16901 specifies basic rules for the design of graphical symbols for use in the technical documentation.
This part is applicable to the graphical symbols for use in the technical documentation
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 16901. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 1988 Information technology — 7-bit Coded character set for information interchange (GB/T 1988-1998, eqv ISO/IEC 646:1991)
GB 3102 (all parts) Quantities and units (GB 3102-1993, eqv ISO 31:1992)
GB/T 4458.4 Mechanical drawings dimensioning
GB 13000.1 Information technology — Universal Multiple-Octet Coded Character Set (UCS) — Part 1: Architecture and basic multilingual plane (GB 13000.1-1993, idt ISO/IEC 10646-1:1993)
GB/T 14691 Technical drawings — Lettering (GB/T 14691-1993, eqv ISO 3098-1:1974)
GB/T 15565 (all parts) Graphical symbol — Terms
GB/T 16900 Rules for the presentation of graphical symbols — General principles (GB/T 16900-1997, eqv IS0/IEC 11714-1:1996)
GB/T 17450 Technical drawings — Basic conventions for lines (GB/T 17450-1998, idt ISO 128-20:1996)
GB/T 19679 Information technology — Coded graphic character set for use in the preparation of documents used in electrotechnology and for information interchange (GB/T 19679-2005, IEC 61286:2001, IDT)
ISO 6428 Technical drawings — Requirements for microcopying
ISO/IEC 8859 (all parts) Information processing — 8-bit single-byte coded graphic character sets
ISO/IEC 10367 Information technology — Standardized coded graphic character sets for use in 8-bit codes
IEC 60027 (all parts) Letter symbols to be used in electrical technology
3 Terms and Definitions
For the purposes of this part of GB/T 16901, terms and definitions specified in GB/T 15565 and the following apply. For the convenience of use, parts of terms specified in GB/T 15565 are given below.
3.1
Foreword III
1 Scope
2 Normative References
3 Terms and Definitions
4 Markers
5 Design of Graphical Symbols
5.1 Graphic representation
5.2 Design procedure
6 Design Principles
6.1 Shape
6.2 Operational state
6.3 Classes of graphical symbols
6.4 Combination of graphical symbols
6.4.2 Graphical symbols for complex assemblies
6.5 Grid and module
6.6 Line width
6.7 Arcs and lines
6.8 Minimum space between parallel lines
6.9 Hatched and filled areas
6.10 Connect node
6.11 Position of a connect node
6.12 Terminal line
6.13 Reference point
6.14 Text assigned to graphical symbols
6.15 Size of graphical symbols
7 Modification of Proportions
8 Variants of Graphical Symbols
Bibliography
Figure 1 Marker of Connect Nodes
Figure 2 Pumping System
Figure 3 Electrostatic Microphone
Figure 4 AND Element
Figure 5 Multiplexer
Figure 6 Bistable Element
Figure 7 Feedback Controller and Radio System
Figure 8 Hydraulic Control System
Figure 9 Examples of Grids
Figure 10 Examples of Graphical Symbol Outlines Containing Connect Nodes
Figure 11 Examples of Text Location
Figure 12 Minimum Distances between Text and Lines
Figure 13 Possible Variants of the Graphical Symbol for an Asymmetric Reduction
Figure 14 Possible Variants of the Graphical Symbol for a Thyristor
Figure 15 Possible Variants of Composite Graphical Symbol
Table 1 Examples of Combinations of Graphical Symbols
Table 2 Example I of Required Modifications in Different Variants
Table 3 Example II of Required Modifications in Different Variants
