Warning: Be wary of "free PDF" scam sites. They often contain malware or missing pages (especially page 22, which contains the crucial line diagram).
In 2014, Standards Australia released AS 1100.101:2014. This caused confusion. Is the 1992 version dead? AS 1100.101 1992 Technical drawing General principles.pdf
Lines are the "vocabulary" of technical drawing. AS 1100.101 defines specific line types based on line thickness and style. Warning: Be wary of "free PDF" scam sites
is more than just a dusty old file. It is the linguistic foundation of Australian engineering. Whether you are drawing a simple bracket in a first-year CAD class or reviewing a subcontractor's shop drawings for a high-rise building, this standard ensures that the line you draw means the same thing to everyone who sees it. AS 1100.101 1992 Technical drawing General principles.pdf