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AutoCAD Hatch Patterns BS 8888:2008, BS 308  Hatch Patterns

This page will allow you to create AutoCAD Hatch patterns that comply with BS 8888:2008 . Technical Product Documentation (TPD) Specification for defining, specifying and graphically representing products and BS 308 Part 1 1984 Engineering drawing practice. BS 308 a superseded standard for engineering drawing conventions, having been incororated into BS 8888, BS 8888 does not show examples of cross hatching patterns but references other guidance.

 

BS 8888 Hatching Guidance

BS 8888 Clause 11 Refers to BS ISO 128-50 TD-GPP Part 50: Basic convention for representing areas on cuts and sections

 

BS 308 Hatching Guidance

Hatching consists of continuous thin lines drawn equispaced at a well defined angle, preferably at 45 degrees to the sheet border, (see figure, which shows hatching at 45, 0 and 90 degrees) or to the principal outlines or the axis of the section.  Spacing of the hatching should be chosen in proportion to the size of the hatched section, but should preferably be not less than 4mm. Exceptionally when hatching small areas the reduced space between the lines should not be less than 1mm.

 

BS 308 does not show any other options for hatching except for simple cross hatching at 45, 0, 90 degrees using thin continuous lines at 1mm - 4mm spacing.

 

CAD Standards should use recognised hatching conventions. The British Standard compliant patterns on this page ensure that your company CAD standards are based on industry best practice.