Drawing and
Dimensioning
Multiview Drawings
Multiview Drawing
A multiview drawing is one that shows two
or more two-dimensional views of a threedimensional object.
Multiview drawings provide the shape
description of an object. When combined
with dimensions, multiview drawings serve
as the main form of communication
between designers and manufacturers.
Width, Depth, and Height
All three-dimensional objects have width,
height, and depth.
Width is associated with an object’s sideto-side dimension.
Height is the measure of an object from
top-to-bottom.
Depth is associated with front-to-back
distance.
Width, Depth, and Height
45°
Orthographic Projection
Orthographic projection is a technique
that is used to create multiview drawings.
Orthographic projection is any projection
of the features of an object onto an
imaginary plane of projection. The
projection of the features of the object is
made by lines of sight that are
perpendicular to the plane of projection.
Sketching a Multiview Drawing
Step #1: Calculate the amount of space that
the views will take up.
Calculating Required Space
On grid paper
12
spaces
Overall
Multiview
Sketch Height?
Overall
Multiview
Sketch Width?
18 spaces
Sketching a Multiview Drawing
Step #1: Calculate the amount of space that
the views will take up.
Step #2: Layout box within which the
individual views will occur.
Sketching Box Layout
Sketching a Multiview Drawing
Step #1: Calculate the amount of space that
the views will take up.
Step #2: Layout box within which the
individual views will occur.
Object Line Layout
1. ADD UP
- height of front view +
-1-1/2” space +
DEPTH
-depth of top view =
HEIGHT of BOX
1-1/2”
2. ADD UP
- width of front view +
-1-1/2” space +
-depth of right view =
HEIGHT
WIDTH of BOX
WIDTH
1-1/2”
DEPTH
Dimensions and
Orthographics
Dimensions and
Orthographics
DIMENSION RULES
1.
Keep ALL dimensions inside the layout
Box, unless absolutely necessary due
to space and organization
2.
Never repeat dimensions
3.
Never dimension to hidden lines
4.
Keep all width, depths, and heights to
one view, unless necessary due to
detail of drawing and organization