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- If the cutting plane is passed halfway through an object, and one-quarter of the object is removed, the resulting section is a half section. A half section has the advantage of showing both inside and outside configurations. It is frequently used for symmetrical objects.
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Half Sections. If the cutting plane is passed halfway through an object, and one-quarter of the object is removed, the resulting section is a half section. A half section has the advantage of showing both inside and outside configurations. It is frequently used for symmetrical objects.
- Section Views – Engineering Graphics and Design
A half section view means that you are only removing a...
- Section Views – Engineering Graphics and Design
A half section is one-half of a full section. While a full section shows the object as if half has been cut away, a half section shows one-quarter cut away. Imagine that two cutting planes at right angles to each other slice through the object as shown in Figure 8-11A through Figure 8-11C. Figure 8-11D shows the object’s exterior (not in ...
A half section view means that you are only removing a quarter of an object. This type of view is ordinarily used when the object is symmetrical or if you only need to show a portion of a complex assembly.
- Full Sections. A Full section view is where the entire part or assembly is cut on a single plane. The generated section view that is created may form part of the same view as the reference view, permitted the correct projection method (first or third angled projection) is used.
- Half Section. The half section view may be used where a part or assembly is symmetrical about the centerline of the part or assembly. This will save space on the drawing with over population of reference and section views.
- Partial Section. A Partial section is used when only a certain portion of a part or assembly is cut in order to show important detail or geometry. The whole part or assembly is not sectioned as that may minimize the other information show.
- Revolved Section. A revolved section is a section that is made at a certain point in a part and revolved 90° to show the cross section of the part. The part can be broken to show the revolved section or the revolved section can be superimposed on the part itself.
- Section Lining. The lines in the figure above, which look like saw marks, are called section lining. They are found on most sectional views, and indicate the surface which has been exposed by the cutting plane.
- Full Sections. When a cutting plane line passes entirely through an object, the resulting section is called a full section Fig. 7 illustrates a full section.
- Half Sections. If the cutting plane is passed halfway through an object, and one-quarter of the object is removed, the resulting section is a half section.
- Broken Out Sections. In many cases only a small part of a view needs to be sectioned in order to show some internal detail. In the figure below, the broken out section is removed by a freehand break line.
A half-section is a view of an object showing one-half of the view in section, as in figure 19 and 20. Figure 19 - Full and sectioned isometric views. Figure 20 - Front view and half section. The diagonal lines on the section drawing are used to indicate the area that has been theoretically cut.
Half section views are most often used on parts that are symmetrical, such as cylinders. A broken-out section is used to show interior features of a part by breaking away some of the object.
