Microsoft Word - lecnote_fm_engineering drawing

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Which views should one choose for a multi view drawing? The
views that reveal every detail about the object. Three views
are not always necessary; we need only as many views as
are required to describe the object fully. For example, some
objects need only two views, while others need four. The
circular object in figure 5.6 requires only two views.


Figure 5.6 an object needing only two orthogonal views


5.2. Theory Of Multi View Projections


Multi view orthographic projection is the primary means of
graphic communication used in engineering work. Drawings
are used to convey ideas, dimensions, shapes, and
procedures for the manufacture of the object or construction
of a system. Orthographic projection is the basis of all
descriptive geometry procedures. Multi view projection is a
procedure that can be used to completely describe an object’s
shape and dimensions using two or more views that are
normally projected at 90^0 to each other, or at specified angles.
In general, engineering work is complete using this method of

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