TOPICS
Definition Orthographic
Reading
DEFINITION
Reading a drawing is the process of recognizing the shape of an object by interpreting the orthographic views.
Orthographic Writing
Orthographic Reading
B.V.
R.S.V
F.V.
L.S.V
T.V.
Given
VIEWING DIRECTION
ORTHOGRAPHIC READING
Analysis by Solids
Objects are decomposed into solid geometric primitives.
Some of familiar solid objects 
Rectangular prism
Cylinder
Negative cylinder (Hole)
Objects are decomposed into solid geometric primitives.
Some of familiar solid objects Cone 
Pyramid 
Sphere
- Orient yourself with the views given. (Choose the viewing direction.)
- Read the individual surfaces that appeared in each view and related to each other.
- Create a proper solid geometric primitive from each reading.
- Assembly all of solid geometric primitive according to orthographic views.
Given
Composition Rectangular prism Hole
View
Given
Composition Rectangular prism Cylinder
View
Given
Composition
Wedge
ORTHOGRAPHIC READING
Analysis by Surfaces
Orient yourself with the views given.Read the individual set of lines or surface that appeared in each view and related to each other.
-
Mentally create and sketch a form of the surface that produce the same orthographic views as those at the beginning.
- Repeat steps 2 and 3 until all surfaces are read.
-
Adjacent areas that are not in the same plane must be separated by lines.
Lin
Top view
Some of possible objects‘ shape.
Areas that show a similar shape in more than one view is the same surface.
Similar shape
Areas that show a similar shape in more than one view is the same surface.
Similar shape
