CONSTRUCTING PARALINE DRAWINGS
There are three basic approaches to constructing the entire
class of para line drawings. When constructing and
presenting a para line drawing, keep in mind that para line
views are easiest to understand if vertical lines in space are
also oriented vertically on the drawing surface.
• The first is a subtractive approach appropriate for
relatively sim forms. It involves constructing a para line
ple
view of a transpa rent rectangular box that encompasses
the entire volume of the subject, and then working in a
subtractive manner to rem material and revea l t he
ove
form.
• A second approach, appropriate for a composition of
discret eforms, reverses the procedure of t he su b
tractive
approach. It requires draw apara line view of the parent
ing
form first, and t hen adding the subordinate forms.
• The third approach isappropriate for irregularly shaped
forms.lt begins with a para line view of ahorizontal plane
of thesub or the profile of a vertica l section cut. We
ject
can then extrudethe shape vertica lly or extend it b
ack
into the depth of the drawing.
PARALINE ORAWINGS / 79