Engineering Drawings

What are engineering drawings?

Engineering drawings are the graphics representations of ideas. Graphical representations at recognized as an efficient and nearly universal means of communicating designs, instructions, and plans. These documents graphically describe the shapes, sizes, and materials used in a product.  Drawings are the primary method used to control production.


Standard practices are used in engineering drawings to avoid confusion and improve communication.  The practices and standards are facilitated and developed by organizations such as the American Society of Mechanical Engineers (ASME), the American National Standards Institute (ANSI), and the American Welding Society (AWS).

  • Line Conventions and Lettering: ASME Y14.2-2008
  • Multi-View and Sectional View Drawings: ASME Y14.3-2003
  • Pictorial Drawings: ASME Y14.4M-1989
  • Surface Texture Symbols: ASME Y14.36M-1996
  • Dimensions and Tolerancing: ASME Y14.5-2009
  • Welding: AWS A2.4-2012