Technical Design Isometric and Orthographic Drawings.

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Presentation transcript:

Technical Design Isometric and Orthographic Drawings

What are they? Graphic Communications Provide visual details of dimensions, shapes, and proportions of an object. Most people find isometric drawings (3D) easier to interpret.

Isometric Drawings Also known as pictorial drawings They are 3D drawings that typically show points of view of an object Example 

Principle Views A 3-D design has 6 principle views… Top and bottom Back and front Left and right

6 Principle Views

Orthographic Drawing 2D drawings Highlight the details of point of view in separate drawings. Commonly show 3 views: Top view Front view Right side view

Tip to remember: When you are drawing isometric (3D) or orthographic (2D) drawings of an object the point of view labels remain the same. Does not matter the object.

Examples of Orthographic Drawings Architectural drawings Example  − Side view

Orthographic Drawing Example… Floor plans (interior design) Top view

Orthographic Example… Topographic Map (top view)

Drawings are to Scale Orthometric and Isometric drawings both have to be drawn to scale. Scale = shows proportional relationship between the technical drawing and the actual size of the object Legend is given explaining the scale Ex) 1 cm on paper = 5 m on object

Example: Orthographic Drawing with a Scale

Who uses technical Drawings? Draftsman Architect Contractor Interior Design CAD designer Civil Engineer Mechanical Engineer All Trades Cartographer Anyone who has to assemble an object! AND MORE….

TODAY’S GOALS Become familiar with orthographic and isometric drawings Be able to identify an orthographic drawing Be able to identify an isometric drawing Be able to make connections and interpretations of orthographic and isometric drawings with respect to point of views Practice sketching orthographic drawings and isometric drawings using appropriate grid paper

How? Complete the Orthographic Projection Drawings Exercises Worksheet Series of exercises Hands on Computer based