FOUNDATION COURSES
ENGINEERING GRAPHICS
CONCEPTS
AND CONVENTIONS (NOT FOR EXAMINATION)
Importance of graphics in engineering applications –
Use of drafting instruments – BIS conventions and specifications – Size, layout
and folding of drawing sheets – Lettering and dimensioning. Scales:
Construction of Diagonal and Vernier scales.
UNIT- I CONICSECTIONS ANDFREEHANDSKETCHING
Constructionofellipse(concentriccircleandeccentricitymethods),construction of parabola(rectangleandeccentricity methods), construction of hyperbola
(eccentricity method)
Free-hand sketching;orthographic views
of
pictorial views.
UNIT-II PROJECTIONS
OFPOINTS,STRAIGHT
LINES& PLANES
Orthographic
projectionsof
points,orthographicprojections ofstraightlines locatedinthe
firstquadrantonly–determination of
true lengthsand true
inclinations–orthographic
projectionsofpolygonalsurfaceandcircularlamina inclinedtobothreferenceplanes.
UNIT-III PROJECTIONS
OFSOLIDS
Projectionsof
simplesolids(prisms,pyramids,cylinder andcone) whenthe
axisis
inclinedtoonereferenceplaneby
changeofpositionandchangeofreferenceline methods.
UNIT-IV SECTIONSOFSOLIDS&DEVELOPMENTOFSURFACES
Sectionsof solids(prisms, pyramids,cylinder andcone)
insimple
vertical
position by
usingcuttingplane inclinedtoonereference planeandperpendicular tothe
other–obtainingtrueshapeof the section.
Developmentof lateralsurfacesof simple andtruncatedsolids– prisms, pyramids, cylinderandcone– developmentoflateralsurfaces of solidswithcylindrical
cut-outsperpendiculartothe
axis.
UNIT-V ISOMETRIC&PERSPECTIVE
PROJECTION
Principlesofisometricprojection
-isometricscale–isometricprojectionsof simplesolids,
truncatedprisms,pyramids,cylindersandcones–isometricviewof
combinationoftwosimple
solids. Perspective projectionof prismspyramidsandcylinderby visualraymethodand
vanishingpointsmethod.
CONCEPTS
AND CONVENTIONS (NOT FOR EXAMINATION)
Importance of graphics in engineering applications –
Use of drafting instruments – BIS conventions and specifications – Size, layout
and folding of drawing sheets – Lettering and dimensioning. Scales:
Construction of Diagonal and Vernier scales.
UNIT- I CONICSECTIONS ANDFREEHANDSKETCHING
Constructionofellipse(concentriccircleandeccentricitymethods),construction of parabola(rectangleandeccentricity methods), construction of hyperbola
(eccentricity method)
Free-hand sketching;orthographic views
of
pictorial views.
UNIT-II PROJECTIONS
OFPOINTS,STRAIGHT
LINES& PLANES
Orthographic
projectionsof
points,orthographicprojections ofstraightlines locatedinthe
firstquadrantonly–determination of
true lengthsand true
inclinations–orthographic
projectionsofpolygonalsurfaceandcircularlamina inclinedtobothreferenceplanes.
UNIT-III PROJECTIONS OFSOLIDS
Projectionsof
simplesolids(prisms,pyramids,cylinder andcone) whenthe
axisis
inclinedtoonereferenceplaneby
changeofpositionandchangeofreferenceline methods.
UNIT-IV SECTIONSOFSOLIDS&DEVELOPMENTOFSURFACES
Sectionsof solids(prisms, pyramids,cylinder andcone)
insimple
vertical
position by
usingcuttingplane inclinedtoonereference planeandperpendicular tothe
other–obtainingtrueshapeof the section.
Developmentof lateralsurfacesof simple andtruncatedsolids– prisms, pyramids, cylinderandcone– developmentoflateralsurfaces of solidswithcylindrical
cut-outsperpendiculartothe
axis.
UNIT-V ISOMETRIC&PERSPECTIVE PROJECTION
Principlesofisometricprojection
-isometricscale–isometricprojectionsof simplesolids,
truncatedprisms,pyramids,cylindersandcones–isometricviewof
combinationoftwosimple
solids. Perspective projectionof prismspyramidsandcylinderby visualraymethodand
vanishingpointsmethod.
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