Sectional Views

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Forging new generations of engineers
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Sectional Views
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Types of Sectional Views

• Half
• Full
• Offset

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Half Section

• In a half section, one quarter of the part is cut
  away.
  
• The cutting plane line goes half-way through the
  object.
  
• This is done with symmetrical parts where you
  would like to show the outside, as well as the
  inside details.
  

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Half Section
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Half Section
Notice how the cutting plane line runs
through the center of the part
there is no arrow head.
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Full Section

• The cutting plane passes fully through the
  object.
  
• In a full section, half of the object is cut away.

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Full Section
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Full Section
A full section is a view that shows what
the object looks like if it were cut in
half.
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Full Section
A cutting plane line is used to indicate how the
front view was cut. It is also labeled in case a
nother section is necessary. The arrows should p
oint in the line of sight as you are looking str
aight on at the section.
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Full Section
Section lines called Hatch lines are used to show
where the part is solid. This helps to see the
detail that would be normally blocked and only s
hown as hidden lines.
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Offset Section

• Interior features not in line with each other can
  be shown in an offset section view.
  
• Note how the cutting plane line changes and
  follows the center of each feature.