A First Course in Engineering Drawing

1. Introduction Drawing instruments, Drawing sheets, Dimensioning, Lettering. Lettering and Drawing exercises. 2. Geometrical constructions Division of a line, Construction of arcs, triangles and polygons. Circumference of circle. Practice problems. 3. Scales Plain, Diagonal and Vernier scales. Practice problems. 4. Curves used in engineering practice Conic curves, Cycloidal curves, Involute and Spiral. Applications. Practice problems. 5. Orthographic projections Reference planes, First quadrant projections, Third quadrant projections, Orthographic projections from pictorial views, Pictorial views from orthographic projections, Missing line corrections in orthographic views and Missing view additions in orthographic views. Practice problems. 6. Projections of points Pictorial representation and orthographic projections of points. Practice problems. 7. Projections of lines Projections of lines in simple position, Trapezium method, and projections of lines inclined to both the planes. Application problems. Practice problems. 8. Projections of plane figures Triangle, quadrilateral, circle and polygons. Practice problems. 9. Projections of solids Classification of solids. Projections of prisms, pyramids, polyhedrons, cylinder, cone, sphere and combination of solids. Practice problems. 10. Auxiliary projections Auxiliary planes. Auxiliary projections of points and lines. Change of position method. Auxiliary projections of prisms, pyramids, polyhedrons, cylinder and cone. Practice problems. 11. Sections of solids Section planes. Sectional projections of prisms, polyhedrons, pyramids, cylinder, cone and sphere. True shapes of sections. Practice problems. 12. Intersection of surfaces Methods of drawing the lines of intersection of surfaces. Cylinder penetrating cylinder, cylinder penetrating cone, cone penetrating cylinder and prism penetrating prism. Practice problems. 13. Development of surfaces Parallel line method. Radial line method. Developments of prims, pyramids, cone, polyhedrons and cut solids. Helix and helical spring. Practice problems. 14. Isometric projection Principle of isometric projection. Isometric projection and Isometric view. Isometric projections of plane figures, prisms, cylinder, cone, pyramids, cut solids, combination of solids and cubical objects. Practice problems. 15. Perspective projection Nomenclature of perspective. Centre of vision method. Perspective of points, parallel lines and polyhedron. Vanishing point method. Perspective of parallel lines, plane figures, solids and cylinder. Practice problems. 16. Objective type questions Bibliography

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