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The sight arrows at the end of the cutting plane are always perpendicular to the cutting plane. The direction of the arrow indicates the line of sight. Section lines or cross-hatch lines are used to indicate the surfaces that are cut by the cutting plane. Drawn with 2H or 3H pencil.
What line is used to show a surface that has been cut in a section view?
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 lines may be used to indicate the material that has been cut?
Section lines are used to show the cut surfaces of an object in section views. They are fine, dark lines.
What is section cut in drawing?
A ‘section drawing’, ‘section’ or ‘sectional drawing’ shows a view of a structure as though it had been sliced in half or cut along another imaginary plane. Plan drawings are in fact a type of section, but they cut through the building on a horizontal rather than vertical plane.
Which line is used to draw sectional lines?
Section lines are used to show areas that have been cut by the cutting plane. Section lines are grouped in parallel line patterns and usually drawn at a 45o angle. The line type is usually continuous and the line weight is thin (0.3 mm).
What is a cut line in construction?
Cutting lines: show major slices in a building or object. • Object lines: show major outlines of building elements or objects. • Hidden lines: indicate areas or objects not visible on the surface, or objects hidden behind others.
Is Thin line the show the surface that has been cut?
SECTION LINE – a thin lines to show the surface that has been cut.
What is cutting plane line?
Cutting plane lines are thick lines that run through the center of the object that the interior wants to provide an interior view of. Two perpendicular lines with arrows showing in which direction the interior of the object should be viewed are drawn at the end of the line.
Which of the following lines are used to show that the object is cut and then viewed?
Which of the following lines are used to show that the object is cut and then viewed? Explanation: Hatching lines are used to show that the orthographic view is drawn after a section of the object is cut. They indicate that the object is cut and it shows the remaining solid body.
What are the lines used in drawing?
Using the Alphabet of Lines Construction Line. This line is used mainly in sketching, which is a freehand drawing technique. Visible Object line. This line is used to draw all the edges of the object. Hidden Object Line. Centre Line (or centreline) Extension Line. Dimension Line.
Do sectional views show cutting planes?
Revolving sections or view. With this type of section, a space or detail is shown with a cutting plane at an angle, and then the section is rotated so that the cutting plane faces the viewer.
How do you read a sectional drawing?
Imagine cutting through your home, and taking away the portion that faces away from the direction of the section view. Peer into that space. Some of the surfaces will have been cut through when the section was created, then you can see into the rooms that have been cut through until your eye meets a wall or an object.
What are section lines in engineering?
section – are thin lines in a pattern (pattern determined by the material being “cut” or “sectioned”) used to indicate surfaces in section views resulting from “cutting”. Section lines are commonly referred to as “cross-hatching”.
What is cutting plane or section?
Cutting planes are used to create section views. The Cutting Plane command draws a cutting plane line on the part view you want to use as the basis for the section view. You can draw the cutting plane on any part view. This can be any orthographic, auxiliary, or detail view on the drawing.
What is extension line?
Extension lines continue or extend from the surface of the object and establish the size of the dimension. They do not touch the object lines and extend slightly past the dimension line. Extension lines provide a means of displaying a measurement without placing the dimension on the part.
What is line in engineering drawing?
Lines in technical drawings are part of a specialized graphic language that is standardized throughout industry. Each type of line has a very precise symbolic meaning. Correct usage of this “alphabet of lines” is essential whether you use traditional drafting methods or CAD. Line weight is the thickness of the line.
What is a stair cut line?
It shows that the stairs continue upward into the second floor. It’s there to provide a visual break.
What is cut and fill in construction?
In earthmoving, cut and fill is the process of constructing a railway, road or canal whereby the amount of material from cuts roughly matches the amount of fill needed to make nearby embankments, so minimizing the amount of construction labor.
What is cutting in surveying?
Cutting and filling is the process of moving earth from one place to another to make ground more level. A ‘cut’ is made when earth is cut from above the desired ground height and a ‘fill’ is when earth is used to fill a hole to desired ground level.
Which of the following line shows the the surface of an object has been cut on a plane?
The cutting plane line indicates where the object is being cut. This is represented with a heavy, dark, hidden line or phantom line.
What is phantom line?
Lines that are made visible as dots or dashes to reveal the edges of objects currently hidden from view.
What is short break line?
Short break lines are thick, wavy solid lines that are drawn freehand. When either of these break lines is used to shorten an object, you can assume that the section removed from the part is identical to the portions shown on either side of the break. (thin and long with a zigzag) (thick and short, wavy freehand).
How do you draw a cutting line on a plane?
Cutting plane lines are used to define section views. Choose Home tab→Drawing Views group→Cutting Plane . Click a part view. Draw the cutting plane. When you are finished drawing the cutting plane, on the ribbon, click Close Cutting Plane . Click to define the section view direction.
Which type of line is used to draw cutting plane?
Explanation: Lines used to represent cutting planes is chain thin (narrow) with thick (wide) at the ends and at changing of position, lines used to represent centroidal lines and outlines of adjacent parts are chain thin double-dashed or long-dashed double-dotted (narrow).
