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Sagot :
An orthographic drawing represents a three-dimensional object using two-dimensional views of the object. It is also known as an orthographic projection. It is a form of parallel projection, in which all the projection lines are orthogonal to the projection plane.
Three different views of orthographic drawing
1. Front View- it shows the width and height dimensions.
2. Top View- it shows the width and depth dimensions.It is always positioned and aligned with the front view.
3. Side View- it shows the depth and height of dimensions. It is always
positioned to the side of and aligned with the front view.
Multi-view Projection
1. Frontal Plane of Projection- Frontal plane of projection is the plane onto which the Front View (FV) of the multi-view drawing is projected.
2. Horizontal Plane of Projection- Horizontal plane of projection is the plane onto which the Top View of the multi-view drawing is projected.
3. Profile Plane of Projection- the right side view is the standard side view side. The right side view is projected onto the profile plane of projection, which is a plane that is parallel to the right side of the object.
Six Principal Views
1. Top View
2. Front View
3. Bottom View
4. Rear View
5. Left side View
6. Right Side View
- Top, front and bottom views are all aligned vertically and share the same width dimension.
- Rear, left side, front and right side views are all aligned horizontally and share the same height dimension.
How to draw an orthographic drawing?
1. Choose a front view.
- This is the view that shows the most about the object.
2. Decide how many views are needed to completely describe the object.
- If you are unable to determine which views will be needed, draw the standard views (front, top and right side).
3. Draw the visible features of the front view.
4. Draw projectors off of the front view horizontally and vertically in order to create the boundaries for the top and right side views.
5. Draw the top view.
- Use the vertical projectors to fill in the visible and hidden features.
6. Project from the top view back to the front view.
- Use the vertical projectors to fill in any missing visible or hidden features in the front view.
7. Draw a 45° projector off of the upper right corner of the box that encloses the front view.
8. From the top view, draw projectors over to the 45° line and down in order to create the boundaries of the right side view.
9. Draw the right side view.
10. Project back to the top and front view from the right side view as needed.
11. Draw center lines where necessary.
Five types of line styles used in orthographic drawing
1. Visible lines
2. Hidden lines
3. Center lines
4. Dimension lines
5. Construction lines
For additional information about the topic just click this link:What are the elements of technical drawing?: https://brainly.ph/question/1890530
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