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- Cutting Plane. A surface cut by the saw in the drawing above is a cutting plane. Actually, it is an imaginary cutting plane taken through the object, since the object is imagined as being cut through at a desired location.
- Cutting Plane Line. A cutting plane is represented on a drawing by a cutting plane line. This is a heavy long-short-short-long kind of line terminated with arrows.
- 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.
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.
A Half Sectional View slices half of the object to reveal interior on one side and external features on the other. It's ideal for symmetrical objects. An Offset Sectional View displays unaligned internal features by using a staggered cutting plane, showing a 'zigzag' cut effect.
- 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.
- What Is A Sectional View?
- What Is The Cutting plane?
- 6 Types of Sectional Views
Professional builder Jordan Smith likens sectional views to taking a laser and slicing it through a part of the construction, so that you can see how elements of a building fit together vertically. In his Introduction to Reading Blueprints class, he explains: A section view provides architects and contractors another way of understanding how a cons...
A section is a view that one will never see in real life, as it’s the perspective on a room or building if part of it were sliced away. The place where the building is cut away is called the “cutting plane,” and the location of the imaginary cutting plane is typically indicated by a cutting plane line that consists of long dashes set off by two sho...
Full sections. This is the most common section (called a full section) with the imaginary laser cutting a line across the entire construction, offering a view of a portion of the building with the...Half sections or views. In this type of section, only half of the space or object is cut away. This allows you to see part of it in elevation, while the other part of the drawing gives a glimpse in...Offset sections or views. In an offset section, the cutting plane does not follow a straight line. This might be used, for example, if the architect or engineer wanted to show a section of one room...Broken out sections or broken views. With these drawings, only a small portion of the object or space is shown in section. Instead of a section line, the portion that is shown in section is indicat...For example, symmetrical objects can be sectioned using a half section. Or objects with only small areas that need to be clarified with the use of a section view can be represented with a broken-out section.
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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. It is important to remember that when using half sections, certain rules apply to the visibility of the center line.
