ENGINEERING DRAWING- Syllabus

ENGINEERING DRAWING

 

  • Engineering Drawing – Introduction

    • Introduction to Engineering Drawing and Drawing Instruments
    • Conventions
    • Viewing of engineering drawing sheets
    • Method of Folding of printed Drawing sheet as per BIS SP: 46-2003

 

  • Drawing Instrument

    • Drawing board, T-square, Drafter (Drafting M/c), Set squares, Protector, Drawing Instrument Box (Compass, Dividers, Scale, Diagonal Scales etc.), pencils of different grades, Drawing pins/ Clips.

 

  • Free hand drawing

    • Lines, polygons, ellipse etc.
    • Geometrical figures and blocks with dimension.
    • Transferring measurement from the given object to the free hand sketches.
    • Solid objects – Cube, Cuboids, Cone, Prism, Pyramid, Frustum of Cone with dimensions.
    • Free hand drawing of hand tools and measuring tools, simple fasteners (nuts, bolts, rivets etc.) trade related sketches

 

  • Lines

    • Definition, types and applications in drawing as per BIS: 46-2003
    • Classification of lines (Hidden, centre, construction, extension, Dimension, Section)
    • Drawing lines of given length (Straight, curved).
    • Drawing of parallel lines, perpendicular line
    • Methods of Division of line segment

 

  • Drawing of Geometrical figures:

    • Definition, nomenclature and practice of –
      • Angle: Measurement and its types, method of bisecting.
      •  Triangle: different types
      •  Rectangle, Square, Rhombus, Parallelogram.
      •  Circle and its elements
      •  Different polygon and their values of included angles. Inscribed and circumscribed polygons

 

  • Lettering & Numbering

    • Single Stroke, Double Stroke, Inclined.

 

  • Dimensioning and its Practice

    • Definition, types and methods of dimensioning (functional, non-functional and auxiliary)
    • Position of dimensioning (Unidirectional, Aligned)
    • Types of arrowhead
    • Leader line with text
    • Symbols preceding the value of dimension and dimensional tolerance.

 

  • Sizes and layout of drawing sheets

    • Selection of sizes
    • Title Block, its position and content
    • Item Reference on Drawing Sheet (Item list)

 

  • Method of presentation of Engineering Drawing

    • Pictorial View
    • Orthographic View
    • Isometric View

 

  • Symbolic representation – different symbols used in the trades

    • Fastener (Rivets, Bolts and Nuts)
    • Bars and profile sections
    • Weld, Brazed and soldered joints
    • Electrical and electronics element
    • Piping joints and fitting

 

  • Projections

    • Concept of axes plane and quadrant
    • Orthographic projections
    • Method of first angle and third angle projections (definition and difference)
    • Symbol of 1st angle and 3rd angle projection in 3rd angle.

 

  • Orthographic projection from isometric projection

 

  • Reading of fabrication drawing

 

  • Construction of scales and diagonal scales

 

  • Conic sections (Ellipse and Parabola)

 

  • Sketches of nuts, bolt, screw thread, different types of locking devices e.g. Double nut, Castle nut, Pin, etc.

 

  • Sketches of foundation

 

  • Rivets and rivetted joints, welded joints

 

  • Sketches of pipes and pipe joints

 

  • Assembly view of

    • Vee blocks,
    • Bush & Bearing,
    • Different types of Coupling viz., Muff coupling, Half Lap Coupling, Flange coupling, etc.
    • Simple work holding device e.g. vice
    • Drawing details of two mating blocks and assembled view

 

  • Sketch of shaft and pulley, belt, gear, gear drives

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