Drawing Section Views
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Drawing Section Views, Study notes of Technical Drawing
What is a “Section View” ? ▫ A section view is a view used on a drawing to show an area or hidden part of an object by cutting away or removing some of ...
Typology: Study notes
2021/2022
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Drawing Section Views
What is a “Section View”?
A section view is a view used on a drawing to show an area or hidden part of an object by cutting away or removing some of that object. The cut line is called a “cutting plane”, and can be done in several ways. The following slides will help show the several methods or types of “section views”
Full Section
In a full section, the cutting plane line passes fully through the part. Normally a view is replaced with the full section view. The section-lined areas are those portions that have been in actual contact with the cutting-plane.
Full Section
Half Section
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. The line that separates the different types (interior and exterior) may be a centerline or a visible line.
Half Section
Section Lining
45 degree angle lines should be used. 1/8” between lines. All lines should be uniformly spaced Thin sections may be blackened in completely Spacing lines by eye increases speed
Section Lining
Section Lining – Line Placement
Offset Sections
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 cutting- plane line do not show in the section. The versatility of this section makes it very useful.
Aligned Sections
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. Ribs and spokes can be left un-lined for better clarity in the section view.
Aligned Section
Revolved Sections
Broken-out Sections
Used to generate a section for a small area without using a cutting-plane line. Removes a small amount of material to show the interior details. Always used in an orthographic view. Used to enhance the orthographic view by giving the viewer a better look at key interior details.