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Mission

Drafting Certification

 

Credential: Certificate
 

The purpose of our Drafting Certificate program is to provide more than basic Architectural and Mechanical Drafting Skills. Our students will receive the skills to create complete Residential Construction, Survey, and Mechanical / Machine drawings. Subjects include drafting practices, and CAD software. Students are taught by a professional General Draftsman who has over 39 years drafting experience.

 

Certification of Achievement

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Examples of Isometric Drawing using Circumscribing Prisms

As an example, the steps in the drawing of a wooden saw horse, shown below in Fig. 40 and used in the building trades for supporting platforms and the like, will be our first example. The making and the subsequent interpretation of drawings of this kind is facilitated by the introduction of bounding figures of simple shape. In the example chosen, the horse is bounded by a rectangular prism. The attached dimensions show the necessary slopes and may be introduced so as to replace the bounding figure. There is nothing new in this drawing and so there's no need for an indepth description. The bounding figure, when appended to a drawing like that of Fig. 40, helps to emphasize the slopes of the various lines. In general, the bounding figure should be removed on completion of the drawing.

Fig. 41 shows a toothed wheel. The plane of the circles corresponds to the plane of the top face of a cube. To construct it, it is necessary to lay out the prism first and then to insert the ellipses.

A lever is shown in Fig. 42. The center line a-b lies in the top face of the lever body. Circumscribing prisms determine the ends of the lever and also the projecting cylindrical ends.

A gas-engine fly-wheel is shown below in Fig. 43. Here the fly-wheel is shown so that the planes of the circles correspond to one of the side faces of a cube. The wheel has a solid web (without spokes) and a quarter of it is removed and shown in section.

Fig. 44 represents a bell-crank. Again the scheme of using base-lines in connection with circumscribing prisms is shown.

New Course Now Available: Drawing Architectural Plumbing Isometrics

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