drafting technology standards

Standard 1: Drafting Fundamentals

Students will understand concepts of basic drafting that include measurement, lettering, sketching, and dimensioning practices. They will measure accurately, apply appropriate lettering techniques and fonts when creating drawings, produce well-proportioned and easily understood two and three dimensional sketches, and apply dimensioning practices for drawings using the current standards of dimensioning and tolerancing for a variety of drafting applications.

• use scales (architects, metric, civil, and mechanical)

• use drafting equipment

• use common symbols and abbreviations

• demonstrate lettering styles

• perform freehand lettering

• sketch a drawing

• apply basic dimension techniques

• apply tolerancing

• use proper layout techniques

Students will understand, identify and correctly use the alphabet of lines, and will represent objects graphically using appropriate projection techniques.

• properly use the six principle views to fully describe an object

• demonstrate the process of projection

• differentiate line drawing procedure/priority

Students will understand section view applications/functions. They will incorporate section views and appropriate cutting planes to clarify hidden features or objects on drawings.

• use sectional line conventions and symbols

• draw full sections and half sections

Students will understand primary auxiliary projections. They will use orthographic projection methods to produce primary auxiliary views.

• construct an auxiliary view from an oblique plane

Students will understand the structure, types, sequential construction methods, and applications of pictorial drawings, and will draw objects accurately in pictorial format.

• produce isometric drawings

• produce oblique drawings

• produce perspective drawings

Students will understand how to use the appropriate hardware and software to create geometry and apply dimensioning practices to complete drawings. Drawings are to be organized using accepted computer aided drafting (CAD) procedures. They will apply appropriate software file-management procedures. Students will produce hard copies of the completed drawings and save electronic files.

• operate Computer Aided Drafting (CAD) equipment

• apply CAD software to generate drawings

• save and retrieve drawing files

Students will understand and incorporate research and design strategies as they relate to the universal problem-solving approach in the development of a drawing for the construction of a project.

• determine client needs

• develop a design for a manufacturing and/or construction project to meet a client's needs

• evaluate the product in light of its function and meeting the client's needs

Students will understand the physical categories of solid geometry. They will generate a solid model using primitive shapes, extrusions and revolutions. Students will form solid models by joining primitives and solids formed by extrusion and revolution using union, difference and intersection.

• produce three-dimensional drawings of polyhedral, prisms, cylinders, pyramids, cones, spheres, torus, and ellipsoids

• produce models using primitive shapes

Students will understand concepts of working drawings and produce drawings for manufacturability.

• complete the various types of working drawings using appropriate line work, symbology, and current standards

• apply correct tolerance conventions to drawings

• develop primary orthographic and auxiliary views

• organize and complete an assembly drawing using information collected from detail drawings