Lines on construction drawingsīS ISO 128-24:1999 Technical drawings. Basic conventions for linesīS ISO 128-23:1999 Technical drawings. I’m not sure how this fits in!īS 8888:2008 Technical product specification.īS EN ISO 128-20:2001 Technical drawings. The recommended Line weight for the ‘Drawing frame’ (Border) for engineering drawings is 0.7mm. The default line weight in both Autocad and Inventor is 0.25mm. If you only want to use two line weights, take the narrow and wide pair from each row. You should base your choice on the size of paper and copying requirements. You can use which ever group of line weights you like. The acceptable line weights (in mm) that can be used in a drawing are as follows:Ġ.18 | 0.25 | 0.35 | 0.5 | 0.7 | 1.0 | 1.4 | 2.0įor the nerds among you the ratio between Line weights is 1:√2 (≈ 1:1.4): A drawing file that's saved as a drawing standards file (DWS) can be used as the. Standardized drawing organization is particularly useful in collaborative environments where many individuals might contribute to a drawing. The extra line weight for construction drawings is used to represent graphical symbols and is situated somewhere between the ‘Narrow’ Line and ‘Wide’ line. The CAD Standards feature makes it easier for others to understand and follow consistent drawing organization practices by maintaining common names and style settings. However, this varies for each drawing discipline.Įngineering drawings only require two line weights, Construction drawings can have up to four Line weights. The Line weights should be in the ratio 4:2:1. The British Technical Drawing standards allows for three Line weights on each drawing.
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