Download Drawing Section Views

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Sections
By, Mrs. Noshaba Maryam
Chapter 5
Design Methodology
Semester 2015-16
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SECTION
Understanding Sections
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Section views have three main purposes:
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Document the design and manufacture of single
parts which are manufactured as one piece
Document how multiple parts are to be assembled
or built
Aid in visualizing internal workings of a design
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Placement of Section Views
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Section views can replace the normal
top, front, side, or other standard
orthographic view
Labeling Cutting Planes
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When more than one cutting plane is
used, it is especially important to label
them for clarity
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Cutting Plane Line Style
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The preferred cutting plane line style is
made up of equal dashes ending in
arrowheads
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Another style uses alternating long dashes
and pairs of short dashes
Section Lining Symbols
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Section lining symbols may be used to
indicate specific materials
Using different section lining patterns
helps you distinguish different
materials, especially on assembly
drawings

It is acceptable to use the general-purpose
symbol at different angles for different
parts
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Section Lining Symbols
Types of Sections
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Full Section
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In a full section, the cutting plane line
passes fully through the part.
Normally a view is replaced with the full
section view.
Full Section
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Half Section
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Half Section is used to the exterior and
interior of the part in the same view.
The cutting-plane line cuts halfway
through the part and removes one
quarter of the material.
Half Section
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Section Lining
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45 degree angle lines should be used.
1/8” between lines.
All lines should be uniformly spaced
Thin sections may be blackened in
completely
Section Lining – Line Placement
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Lines should never be parallel or
perpendicular to the object lines.
If the outline of the object has 45
degree lines, 30 or 60 degree lines
should be used.
Assemblies with several parts should be
lined with varying angle section lines.
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Section Lining – Line Placement
Offset Sections
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Used to show parts and features that
do not line up with each other.
Cutting-plane line does not travel in a
straight line.
The offsets or bends in the cuttingplane line do not show in the section.
The versatility of this section makes it
very useful.
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Offset Sections
Aligned Sections
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Usually used on symmetrical circular
parts.
Place the cutting-plane line to show the
most detail.
All parts and details are rotated into the
section view.
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Aligned Section
FFD 201 – SECTION
A SECTION MUST INCLUDE:
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Interior elevations
Various spaces labeled with a name
Section names
Floor levels (given in relation to the ground floor level)
Dimensioning
the structural system hatched
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FFD 201 – SECTION
SAMPLE SECTION
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