CAD & Drafting
Computer-Aided Design (CAD) is the use of software to create precise 2D drawings and 3D models for engineering and construction documentation.
Fundamentals
Drawing Standards
- ISO 128 — Technical drawings — general principles of presentation
- ISO 7200 — Title blocks
- Line weights, linetypes, and layer conventions
AutoCAD Essentials
- Coordinate systems (WCS vs UCS)
- Object Snap (OSNAP) and precision drawing
- Layouts, viewports, and plotting
- External references (Xrefs) and block libraries
Annotation
- Dimensions and tolerances
- Text styles and annotation scaling
- Leaders and multileaders
File Formats
| Format | Use |
|---|---|
.dwg | Native AutoCAD format |
.dxf | Drawing Exchange Format — interoperability |
.pdf | Issue for construction / review |
.ifc | BIM interoperability |
References
- ISO 128:2020 Technical product documentation — General principles of representation.
- Autodesk. AutoCAD Documentation. https://help.autodesk.com/view/ACDOC/
Last updated on