CUTTING PLANE LINE – Extra thick lines use to show cutaway views or plane of projection where a section view is taken. Arrow indicates the direction of view. 8. SHORT AND LONG BREAK LINES –Short and long medium line use to show cutaway view of a long section.
What type of lines are used to show a surface in a section view where material has been cut away?
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.
What type of line is used to indicate where a section is taken and in what direction it is viewed?
CUTTING PLANE LINES are used to indicate a plane or planes in which a sectional view is taken. Section views are used to give a clearer view of the interior or hidden feature of an object that normally cannot be clearly observed in conventional outside views.
Which type of line is used for sectioning?
Sectional views are drawn to show more clearly what hidden parts would look like. The cutting plane is shown as a chain dotted line thickened at the ends and labelled with a letter. Where parts are cut by the cutting plane they are hatched using a thin line drawn at 45˚. These lines should be equally spaced at 4mm.
What are section lines used to show?
Section lines are used to show the cut surfaces of an object in section views. They are fine, dark lines. Various types of section lines may indicate the type of material cut by the cutting plane line. Center lines are used to indicate the centers of holes, arcs, and symmetrical objects.
What are the 7 types of section views?
- Full Section. If the imaginary cutting plane passes through the entire object, splitting the drawn object in two with the interior of the object revealed, this is called a “full section.” A full section is the most widely-used sectional view.
- Half View. …
- Offset View. …
- Revolving View. …
- Broken View.
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In a scaled drawing, the hidden line can be measured from the start of the first dash, to the end of the last dash. Centre lines are drawn to indicate the exact centre of a component being drawn. They are made from a series of lighter long and short dashes. Check the answer of
Section views do not include hidden lines. Any material cut when a section view is defined is hatched using section lines. There are many different styles of hatching, but the general style is evenly spaced 45° lines.
What symbol is used to indicate the plane where you cut an object?
What symbol is used to indicate the plane where you cut an object? The cutting plane appears edgewise as a thick dashed line called the cutting-plane line. The arrows at the ends of the cutting-plane line indicate the direction of sight for the sectional view. Read:
When and why is a section view necessary?
In which case, the direction of sight is towards one half of the object. The other half is then mentally discarded. Drafters use sectional views to improve the clarity of complex objects when internal surfaces result in too many hidden lines. Special conventions are used to make a sectional view easy to understand.
What are the 7 types of lines?
There are many types of lines: thick, thin, horizontal, vertical, zigzag, diagonal, curly, curved, spiral, etc. and are often very expressive.
What are the different types of sectioning?
- you have a mental disorder.
- you need to be detained for a short time for assessment and possibly medical treatment, and.
- it is necessary for your own health or safety or for the protection of other people.
What are thin lines?
A very narrow division between two alternatives, one of which is much worse than the other. As a new parent, you learn that there’s a thin line between looking out for your child’s welfare and being overprotective. See also: line, thin.
What is section view explain with examples?
A sectional view or a section looks inside an object. Sections are used to clarify the interior construction of a part that can not be clearly described by hidden lines in exterior views. By taking an imaginary cut through the object and removing a portion, the inside features may be seen more clearly.
What is the section view?
What is a section view? A sectional view or a section looks inside an object. Sections are used to clarify the interior construction of a part that cannot be clearly described by hidden lines in exterior views. … The unwanted portion is mentally discarded exposing the interior construction.
What are the types of lines in drawing?
There are 5 main types of lines in art: vertical lines, horizontal lines, diagonal lines, zigzag lines, and curved lines. Other types of lines are simply variations of the five main ones.
