O B J E C T I V E S
After Af te r studying st ud yi ng t t his hi s chapter ch ap te r,
you hould sh ld b b e bl ab le t t o:
Understand the principles p p of
orthographic projection.
Use U U se o o rth rt ho ho graphic gr ap hi hi c pr pr jec oj oj ec ion ti ti on t t o o d de de vel ve lo lo p p
multiview drawings.
I I dentify de nt if y and an d explain ex pl ai n projection pr oj ec ti on p p lanes la ne s
and how they y relate to multiview
drawings.
D D etermine et er mi ne t t he he views ie ws n n ecessary ec es sa ry t t o o
completely describe an object in a
multiview drawing.
I I dentify de nt if y y various va ri ou s types ty y pe p s of of f f eatures ea tu re s
existing within objects.
Identify I I de de nt nt if if y and an an d d explain ex ex pl pl ai ai n n positi po po si si ti ti e ve ve and a a nd nd
negative mass as it relates to an object.
Explain the difference between
primary pr im ar y and an d secondary se co nd ar y views vi ew s of of
objects and features.
Cent C C te r a mul lt lt i i iv i i ie w d d dr awi i in g on t t h h he
drawing sheet.
Multiview
Drawings
D r a f t i n g v o c a b u l a r y
9
Blocking in
Depth
Engineering
working drawings
First-angle
projection
Foreshortening
Frontal plane
Height
Horizontal plane
Mechanical drawing
Multiview drawing
Negative mass
Object feature
Orthographic
projection
Positive mass
Primary projection
plane
Primary view
Principal planes
Principal views
Profile plane
Third-angle
projection
True face
Width
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