CGT 110 Lecture 1-2

CGT 110 Lecture 1-2 - Lecture 1-2 Engineering Graphics as...

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Unformatted text preview: Lecture 1-2 Engineering Graphics as Language Graphic Representation Expression of ideas by lines or marks Drawings Language Drawing Artistic Interpretive and emotive Technical Expression of practical or technical ideas Shared Characteristics System of projection Scale Standard representations Simplification Use of symbolic representation Prior to the mid 1980s most design and documentation was paper based. Mechanical drawing or drafting Beginning in the 1980s CAD D=drafting 1990s CAD D=design 3D wire frame, surface, and solid models 2000s Constraint based and parametric Design Features of an object are projected along lines of sight to a plane of projection Object orientation Orthographic, revolved, tilted Line of sight Parallel,converging (distance of point of view) Plane of projection perpendicular or oblique to the line of sight Perspective Pictorial Isometric and Oblique Multi-view...
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CGT 110 Lecture 1-2 - Lecture 1-2 Engineering Graphics as...

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