Each line type is designated by a letter, and given a type (style) – these are explained in the table below.
Australian Standards
| Designating letter | Type of line | Looks like |
|---|---|---|
| A | Continuous – thick |  |
| Application: This line type is used for visible outlines, general details, existing buildings and landscaping in site plans. |
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| B | Continuous – thin |  |
| Application: This is the line type you would use for dimension lines, projection lines, intersection lines, and headers. It's also used for hatching and outlines of revolved sections. |
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| D | Continuous – thin, ruled with zig-zag |  |
| Application: Used only on break lines, other than on an axis. |
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| J | Chain – thick |  s = 1mm minimum q = 2s to 4s p = 3q to 10q |
| Application: This line indicates that surfaces will need to comply with special requirements such as pipelines, drains and services. |
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Reproduced under copyright licence from SAI Global.