Lecture 2 Orthographic Projections, Principle Views

Lecture 2 Orthographic Projections, Principle Views -...

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Projections: Orthogonal and Multiview Drawings CGN 2328 Technical Drawing and Visualization 1
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Orthographic Projections All parallel lines on objects are actually drawn parallel on paper. True size and shape can be measured from these views. They are common in engineering and construction drawings because they can be drawn to scale. 2
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3 Multiview Projection Almost every engineering or construction drawing is a multiview projection! Views are obtained by unfolding the glass box (see below)
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The Six Orthographic Views There are 6 orthogonal views of an object just like there are 6 sides in a typical box. (1) front, (2) rear, (3) top, (4) bottom, (5) left side, (6) right side 4
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5 Creating Orthogonal Views Views are created by projecting any changes in plane (hidden and visible) outward perpendicular to the glass face.
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6 Projection of Lines
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Standard Arrangement of Views 7
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Views of an Object Three views completely define an object Any one view of a three dimensional object shows only two dimensions The third dimension is found in an adjacent view 8
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Lecture 2 Orthographic Projections, Principle Views -...

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