PROJECTION S PROJECTIONS Perspective Projection Parallel projection Orthographic Slides: 25 Download presentation PROJECTION S PROJECTIONS Perspective Projection Parallel projection Orthographic Projection (Multiview Projection) 4 Different Viewpoint Orthographic Projection Standard 2 D views The Principal Dimensions of an Object Third Angle Projection First Angle Projection USA, Canada Europe, Asia Third Angle Projection First Angle Projection USA, Canada Europe, Asia Standard Views of Primitive Solids View Orientation Poor orientation Good orientation Select the most descriptive views Use minimum number of views to describe the object Conventional Practices - Intersections Miter Lines Miter lines are used to transfer depth information. 45 o line drawn from point O O Standard multiviews Fillets, Rounds & Chamfers Top view Edge Lines – Principal & Inclined 2 Principal lines appear vertical, horizontal or as point views. Inclined lines appear inclined in one view. Edge Lines – Oblique line appears inclined in all views 20 Principal Planes Principle planes are parallel to principal orthographic planes Inclined Planes Inclined planes are perpendicular to two opposite orthographic planes. Oblique Planes Oblique planes are neither parallel nor perpendicular to any principal orthographic planes. Type of Planes Oblique Principal Inclined Edge View of a Plane Principal planes appear in true size in one plane and as an edge view in the other two planes. IsometricIntroduction of orthographic projectionWhat's missingCurved surfaceInclined surfaces in orthographic projectionsPerspective projectionOrthographic projection animationMulti view drawings3 views of isometric drawingOrthographic projection of coneOrthographic projection architectureThe front view of a 125 mm long line pq measures 75 mmOrthographic projectionOrthographic projection quadrantsIsometric drawing vs isometric projectionWhat is glass box method regarding orthographic projection?Orthographic projection typesView of an object represented by width and depthOblique projectionUnidirectional methodOrthographic projection cadPlan end view elevationFirst angle projection methodBorder linesTypes of oblique drawingMissing view problems engineering drawing