Line Conventions, Continued
Cutting plane lines, together with arrowheads and letters, make up the cutting
plane indications. Arrowheads at the end of cutting plane lines indicate the
direction from which you view the section. The cutting plane may be a
simple, continuous plane, or it may be offset to show the interior detail to
better advantage. Identify all cutting plane indications by the use of reference
letters placed at the point of the arrowheads. Where a change in the direction
of the cutting plane is not clear, place reference letters at each change of
direction. Where more than one sectional view appears on a drawing, letter
the cutting plane indications alphabetically preceded by the word SECTION
or abbreviation SECT. Place the title directly under the section drawing. If
you exhaust the single letter alphabet, use multiples of letters.
Figure 3-22 shows simple and offset sectional views.
Figure 3-22.Simple and offset sectional
Continued on next page