PRIN. OF DRAFTING AND SHOP DRAWINGS - OD1641 - LESSON 1/TASK 3
LESSON 1
DRAFTING AND SHOP DRAWING FUNDAMENTALS
TASK 3.
Describe the theory and fundamentals of pictorial drawings: oblique and
CONDITIONS
Within a self-study environment and given the subcourse text, without assistance.
STANDARDS
Within one hour
REFERENCES
No supplementary references are needed for this task.
1.
Introduction
In the previous two tasks of this subcourse, we discussed orthographic projection,
freehand drafting, drafting instruments, and geometric construction. In this task,
we will discuss pictorial drawings: oblique and isometric.
Shop drawings are divided into two main categories of projection, pictorial and
orthographic. These two main categories are further subdivided into various types.
For instance, under pictorial drawings there are four subdivisions, perspective,
oblique, isometric, and cabinet. In this task, we will only be discussing two of
these subdivisions, oblique and isometric.
2.
Isometric Drawings
Isometric drawings are technical pictures that can be drawn by using instruments.
They are not perfect pictures because their axes do not taper
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