Orthographic Drawings

What does the word Orthographic Mean?Ortho 90 Degrees or right angleGraphic to draw or a picture

To draw pictures 90 degrees from each other.

The three common orthographic planes are: Top, Front, and Right Side

Orthographic Projections3 views of an object that are 90 degrees to each otherUsually the Top, Front, and Right Side views are used

To get Orthographic projections based on the top, front, and right side views, we use a special technique that allows us to see each view straight on.

Transparent Cube

If you place an object to be drawn inside of a transparent cube, you can then project the image of each side directly onto the face of the cube.

Inside the cube

When we unfold the cube

We typically only use 3 of the six views

Top, Front, and Right Side

To visualize an object without the transparent cube, hold the object and look at it straight on from each view Top, Front, and Right Side.Then draw what you see.

Another concern is the problem of figuring out which line represents WHAT in the other views.

What follows is a way of determining how to do this

Each surface can be identified in each view