Technical Drawing Standards 1 6182021 Technical Terms Design

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Technical Drawing Standards 1 6/18/2021

Technical Drawing Standards 1 6/18/2021

Technical Terms • Design: - a plan or convention for the construction of an

Technical Terms • Design: - a plan or convention for the construction of an object or a system (as in architectural blueprints, engineering drawing, circuit diagrams and sewing patterns) • Drafting: - is a formal graphic language (universal language) understood by people of different nations. - regulated by the (CSA) Canadian Standards Association and (ANSI) American National Standards. • Design Portfolio: - collection of drawings and sketches used to present, construct or report on design process. 6/18/2021 2

Drafting Equipment • Drafting Pencils: - hard pencils (2 H, 3 H, 4 H,

Drafting Equipment • Drafting Pencils: - hard pencils (2 H, 3 H, 4 H, 5 H)…. light lines; - soft pencils (2 B, 3 B, 4 B, 5 B)…. . darker and wider lines. • Scales: - a measuring instrument. - can be used to prepare to a variety of reduced and enlarged sizes. • CADD (Computer Aided Drafting and Design: - Auto. CAD, 3 DMAX, Civil, Revit, Inventor

IMPERIAL METRIC A 8. 00" x 10. 50" 8. 50" x 11. 00" A

IMPERIAL METRIC A 8. 00" x 10. 50" 8. 50" x 11. 00" A 4 190 mm x 270 mm 210 mm x 300 mm B 10. 50" x 16. 50" 11. 00" x 17. 00" A 3 280 mm x 400 mm 300 mm x 420 mm C 16. 25" x 21. 25" 17. 00" x 22. 00" A 2 400 mm x 560 mm 400 mm x 580 mm D 21. 00" x 33. 00" 22. 00" x 34. 00" A 1 570 mm x 810 mm 590 mm x 830 mm E 33. 00" x 43. 00" 34. 00" x 44. 00" A 0 820 mm x 1160 mm 840 mm x 180 mm

Artistic vs. Technical • Artistic Drawing: - freehand representation…. provide realistic impressions of object

Artistic vs. Technical • Artistic Drawing: - freehand representation…. provide realistic impressions of object - not critical on details • Technical Drawing: - drawing instruments or computers are used rather than freehand. - provides precise and complete descriptions of the shape details of objects.

Types of Technical Drawings • Layout Drawings • Presentation Drawings • Detailed Working Drawings

Types of Technical Drawings • Layout Drawings • Presentation Drawings • Detailed Working Drawings 6/18/2021 6

Types of Technical Drawings • Design Layout Drawings: - are design sketches prepared by

Types of Technical Drawings • Design Layout Drawings: - are design sketches prepared by Engineers, Architects, and Designers. - purpose is to show a product or part looks, fits or operates under working conditions.

Types of Technical Drawings • Presentation Drawings: - normally used as a selling feature

Types of Technical Drawings • Presentation Drawings: - normally used as a selling feature or in presenting final design - Provides an overall view of the object - usually drawn three dimensional to give a realistic visual description of the part. - do not contain a lot of detail

Types of Technical Drawings • Detailed Working Drawings - provides details necessary to make

Types of Technical Drawings • Detailed Working Drawings - provides details necessary to make the part (shape, size, and specification). - used by professional craftsmen. These drawings are thoroughly dimensioned for construction purposes

LINE TYPE DESCRIPTION Construction Lines thin light lines used to construct or layout of

LINE TYPE DESCRIPTION Construction Lines thin light lines used to construct or layout of objects these lines can be easily and quickly erased Object Lines thick dark lines used to indicate the visible features of an object. Projection Lines construction lines that are used to project the feature of objects from one view to another Hidden Lines thin black lines consisting of 3 to 4 mm long strokes and 1 to 2 mm spaces used to indicate hidden features of an object Centre Lines thin black lines that has breaks that consists of one short stroke used to indicate the centres of cylindrical objects and features Phantom Lines thin black lines that has breaks that consist of two short lines used on isometric assemblies to illustrate assembly Section Lines thin black lines usually drawn at 45 degrees they indicate the solid areas of a part that are imagined cut through to obtain a sectional view Dimension Lines thin black lines used to indicate the dimensions of an object Extension Lines thin black lines used to extend the features of an object to a convenient place on a drawing for dimensioning purposes Leader thin black line used to indicate the part of the drawing to which a note refers. Footer Text 6/18/2021 11

Footer Text 6/18/2021 12

Footer Text 6/18/2021 12