| Line style | Thickness | Typical use | |------------|-----------|--------------| | Continuous thick (0.5–0.7 mm) | Thick | Visible outlines, edges | | Continuous thin (0.25–0.35 mm) | Thin | Dimension lines, hatching, leaders | | Continuous thin freehand | Thin | Limits of partial/ interrupted views | | Dashed (short dashes) | Thick/Thin | Hidden outlines/edges | | Chain thin | Thin | Centre lines, pitch circles | | Chain thick | Thick | Cutting planes |
If you need to reference the actual PDF file (e.g., in a digital asset list), you could write:
File name: AS 1100.101 1992 Technical drawing General principles.pdf
Source: Standards Australia, 1992, AS 1100.101—1992, Sydney. AS 1100.101 1992 Technical drawing General principles.pdf
The standard defines two primary methods of orthographic projection:
To ensure legibility, the standard prescribes the style and size of text. | Line style | Thickness | Typical use
The standard mandates the use of Third Angle Projection as the default for Australia. This is critical. In the US and Australia, we use Third Angle. In Europe, they use First Angle.
The symbol for Third Angle projection (a truncated cone inside a trapezoid) must appear on every drawing sheet title block per AS 1100.101. Filing Margin: On the left side of vertical
AS 1100.101 allows two primary methods of orthographic projection. You must identify which one is being used by a symbol in the title block.