Working drawings are a fundamental part of any manufacturing or construction business. These drawings document the manufacturing and construction process for simple-to-complex assemblies. Typically, a set of working drawings includes dimensioned detail drawings, assembly drawings, and parts lists normally developed based on ANSI standards. Most assemblies contain standard parts such as fasteners or mechanisms. These parts all have to be specified on the working drawings using ANSI standards. A basic knowledge of how these standard parts function in a product is critical both to its design and how it is notated on the drawings. Many industries have there own specialized drawings such as piping drawings and welding drawings. These drawings also have standardized methods of representing parts and processes on the drawings. Traditionally, drawings have been created on paper, which must be stored retrieved, and copied through a process called reprographics. Increasingly computers are being used to not only generate the original drawings, but also manage their storage, copying, and distribution electronically. | 
2002 McGraw-Hill Higher Education