Blueprints and Construction Drawings: A Universal Language 17
of doors, windows, and furniture to make a presentation. Architects and designers also sometimes de-
sign their own symbols when working with CADD.
In addition to preparing impressive presentations on paper, CADD can be used to make on-screen
presentations. Ideas can be presented on-screen by merely plugging the computer to a projector. Ad-
vanced CADD programs also allow you to created animated images. You can show how a building would
appear while walking through it or how a machine assembly will operate as different machine parts move.
Editing Flexibility.
One of the main advantages of CADD is that it allows quick alterations to drawings. Modifications can
be made with pinpoint accuracy. It takes only seconds to do a job that would otherwise take hours on a
drawing board to produce. In many cases you may not even have to erase a section to make the change.
Figure 2.5B Example of a type of CADD-generated drawing.