Before the first shovel of earth is moved, a building has already had a long life on paper. Every building, regardless of it sizes, begins life on a designer’s drawing board or a computer's terminal.
These drawings illustrate the elements of a building, including its design, location, and dimensions. The ability to read drawings is, therefore, an essential skill.
Drawings allow you to visualize a finished project before starting. By visualizing, you can plan ahead and anticipate potential problems, which saves times and money on the job.
Developing this skill takes time and experience.
The term 'construction drawing' is often used interchangeably with the term blueprint.
Blueprints originally referred to as architects’ drawings appeared as a white-line drawing on a solid blue background. Today’s construction drawings are likely to be reproduced on a white paper, usually with white-blue lines but sometimes with black or dark reddish lines. (A drawing with dark reddish lines is called sepia.)
Furthermore, most people in building professions today produce drawings by using computer-aided drafting (CAD).
A CAD system generates drawings from computer programs.
Benefits of using CAD systems:
• They significantly increase productivity over drafting by hand because they automate much of the repetitive work of drafting.
• They make it relatively easy to make changes to drawings.