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