What is a Section view? Explain with examples :-
A section view is a view that is used in a drawing to show an area or hidden part of an object by cutting away or removing some of its parts or object. The cut line is known as “cutting plane”.
So while sketching an object or part that requires a sectional view, they are drawn by eye at an angle of 45 degrees approximately and they are spaced about ( 1/8” ) apart. An example is shown as below ;
Different types of section view and their examples :-
There are different types of sectional views which can be drawn. A few of them are explain below :-
Full sections:
This is the most common section which contains an imaginary laser cutting a single line across an entire construction , offering a view of a portion of any building with the rest of it put to a one side .
Half sections:
A half-section is a view of an object which shows one-half of the view in a section. In this view, we assumes the cutting plane to bend at a right angle and we cut the object through only half , not the full length. And cutting-plane line cuts halfway through the part and removes one quarter of an object .
Broken sections:
A broken section is a cut-away view of an interior part. This view is displayed inside a 2D boundary where we cut away an existing view of the part. A broken view is helpful when we need a specific interior details of a certain part of the object which need featuring .
Offset sections:
An offset section is a section where we include several features in a single section of an object , also those which are not in a straight line. To do this, we bent the cutting plane line, or “OFFSET” to pass through the features of that part.
Assembly sections:
In this section, the model is displayed as if cut by the planes and the faces that we specify, so to show the internal construction of that model. We can select bodies or components to include in or exclude from the section views.
Placement of section lining with example :-
While Section Lining , the section lines are very light. While sketching an object or part that requires a sectional view, they are drawn by angle of approximately 45 degrees, and they are spaced about 1/8” apart. A few things that should be kept in mind while sketching or drawing section lines :-
- Angle of 45 degree in lines should be used.
- The lines should never be parallel or perpendicular to an object lines.
- If the outline of the object have 45 degree lines, then 30 or 60 degree lines should be used.
Section Lining – Section lines placement :-
The full section view for given below diagrams:-
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The half section view for given below diagrams :-
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The offset section view for given below diagrams :-
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The broken-out section view for given below diagrams :-
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