Generally, a draftsman's main job duty is to create technical drawings based on given specifications and calculations. Draftsmen typically work with professionals in their field, such as scientists, architects and engineers, who provide the product or structure's details. The draftsman incorporates these specifications into drawings and plans that may be used in the manufacture, maintenance or repair of the product or structure.
Often, draftsmen use CADD systems to create, save and view their drawings and plans. Depending on the project, draftsmen may need to use more traditional drafting methods, such as drafting pencils and T-squares, to create their drawings. Besides creating drawings, other duties of a draftsman can include calculating structural strength, assessing building capacity limits and estimating construction costs.