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Drawing and Dimensioning
Multiview Drawings
Multiview Drawing
A multiview drawing is one that shows two or more two-dimensional views of a three-dimensional 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 side-to-side dimension.Height is the measure of an object from top-to-bottom.Depth is associated with front-to-backdistance.
45°
Width, Depth, and Height
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.
Orthographic Projection
Sketching a Multiview Drawing
Step #1: Calculate the amount of space that the views will take up.
Calculating Required Space
On grid paper
Overall Multiview
Sketch Height?
Overall Multiview
Sketch Width?18 spaces
12 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 Layout1. ADD UP- height of front view + -1-1/2” space + -depth of top view =HEIGHT of BOX
2. ADD UP- width of front view + -1-1/2” space + -depth of right view =WIDTH of BOX
WIDTH DEPTH1-1/2”
1-1/2”
HEIGHT
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 dimensions3. Never dimension to hidden lines4. Keep all width, depths, and heights to
one view, unless necessary due to detail of drawing and organization