What do hidden lines in a drawing indicate?
Hidden lines in a drawing represent the edges where surfaces meet but are not directly visible. Hidden lines are omitted from pictorial drawings unless they are needed to make the drawing clear.
What is imaginary line in engineering drawing?
Line of sight (LOS) is an imaginary line from the eye to the object.
What are object lines in engineering?
Object lines are solid heavy lines, . 7 mm to . 9 mm. These lines define the shape of the object portrayed and are the outermost outline of the object. A round bar is shown as a circle in one view and a rectangle in the other.
What are visible lines?
Visible lines are the edges or “outlines” of an object. They are drawn as solid lines with a thick/heavy weight.
How can I see hidden lines?
A drafter—in deciding whether a line in a view should be represented as hidden or as visible—relies on the fact that in third-angle projection the near side of the object is near the adjacent view, but in first-angle projection the near side of the object is remote from the adjacent view.
What are the five imaginary lines?
Border, International Date Line, Latitude, including the Equator, Longitude, the prime meridian, the Tropic of Capricorn and the Tropic of Cancer.
What is invisible line?
“Invisible” lines (or implied lines or imaginary lines) trace paths of motion across the visual field. Invisible lines are very powerful, yet may not affect everyone exactly the same way. Consider, for example, the symbolic or associative feelings/nuances of: Horizontal lines. still, asleep, inert, silent.
How to draw missing elevation of a building?
If you are talking about drawing the missing elevation drawing, it can be drawn through orthographic lines. Actually the elevations are drawn by extending the perpendicular construction lines from the given object.
How do I get rid of these lines/edges on my drawing?
Click on the Display Options tab and try turning on/off the Tangent Edges and/or Interference Edges to bring hidden lines/edges into view. The “interference edges” option is also a good way to indicate if you have parts inadvertently overlapping.
Why do the lines in a CAD file appear to meet?
Thus the CAD file has lines which are geometric objects to the accuracy of the calculation. Lines which appear to meet on the screen may not do so when zoomed in to the accuracy of the final object. The CAD file contains points, lines and planes of zero thickness in a mathematical space.
How to find/generate missing views?
To find/generate missing views, one should have thorough understanding of Orthographic and Isometric Views. Watch this video and read further. If you understand the procedure than its well and good,if not, I would suggest you to first master the art of imagining Isometric views from Orthographic Views.