CAD Drafting Technology

Credit: .5
Course Preface
Core Code:
Printable Version: CAD Drafting Technology (pdf)

Course Description
Computer Aided Drafting (CAD) is simply a tool to complete a design or drafting problem as are drafting machines, triangles, scales, etc. We still use the same concept in design or production drawing. We still use orthographic drawings, sketching techniques, pictorials, sections, auxiliary views with dimensions, and ANSI Y14.5 standards.

Prerequisite: Design & Drafting Technology

Core Standards of the Course

Standard 01
The student will be able to use and care for computer hardware.

• Demonstrate the proper care of equipment.
• Operate and adjust input-output devices (printers, plotters).
• Use correct procedures for the handling and operation of storage media.
• Use correct procedures for the startup and shutdown of workstations such as the correct procedure to exit software.
• Adjust monitor controls for maximum comfort and usability.
• Recognize the availability of information services; e.g., electronic mail, bulletin boards, browser, gopher. related academic: (c10, c11, c17, s11)

Standard 02
The student will be able to understanding physical and safety factors.

• Position the screen, chair, keyboard, and lighting for comfort and to ensure good health and posture.

• Remove any electrical or mechanical hazards. related academic: (c10, c11, c17, s11)\

Standard 03
The student will be able to understand and use the computer operating system.

• Gain access into CAD software with correct prior configuration
• Use reference manuals, library materials, and textbooks.

• Use the correct operating system to copy, delete, and rename files, and check disks.
• Make correct file backups

• Use the correct procedure to format 3.5” floppy disks.

• Use the correct procedure to import/export: txt, iges, dxf files.

• Use the correct technique in storing drawings to the hard drive and floppy drive. related academic: (c10, c11, c17, s11)

Standard 04
The student will be able to understand and use basic CAD drafting skills.

• Use correct papers, vellum, mylar, plotter pens, toner, and cartridges.

• Use cartesian coordinates, absolute, polar, and relative to create drawings

• Use decimals, fractions, feet and inches, and metric engineering measurements.

• Use correct lettering techniques and correct text sizes and styles.

• Plot to scale and use correct plot specs.
• Plot drawings with correct line widths.
• Plot on different media, pens, plotters, and printers.

Standard 05
The student will be able to create drawings using a CAD system.

• Create and place appropriate orthographic views.
• Create and place appropriate auxiliary views.
• Create and place appropriate section views.
• Identify and create axonometric drawings; i.e., isometric, dimetric, and trimetric.
• Identify and create oblique drawings; i.e., cabinet and cavalier

• Use a setup for decimal inches, feet, engineer, and degree of precision.
• Make a setup for different-sized work areas and scale the drawing per software package

• Use snap, x,y,z, entity, grid, and positioning methods.

Standard 06
The student will be able to edit drawings using a CAD system.

• Use trim, extend, fillet, scale, stretch, offset, rotate, mirror, pedit, and ddmodify.

• Edit text, drawing format, and spelling
• Use and change properties.

Standard 07
The student will be able to manipulate drawings using a CAD system.

• Move the origin to assist in drawing.
• Use control coordinates and display scale.

• Use line types, color, line, and widths

• Use dynamic, rotation, zooming, panning, and window.

• Insert standard parts and symbols into the drawing.

Standard 08
The student will be able to analyze drawings using a CAD system.

• Use distance, list, status, area, dblist, time, entity characteristics, and save time. related academic: (c11, m5.1, m5.2, m5.3, m5.4, m5.5, m7.1, s8, s11)

Standard 09
The student will be able to dimension drawings using a CAD system.

• Avoid redundant dimensions
• Avoid dimensioning to hidden lines
• Place dimensions on most descriptive views

• Use arrowhead, slashes, and ticks when dimensioning.

• Place dimensions on view in compliance with ansi y14.5 standards.
• Dimension lines, angles, arcs, pyramids, and circular objects.

• Dimension features from center lines, lines of symmetry, theoretical points, and of intersection.
• Use appropriate dual dimensioning standards.
• Use correct size and location dimensions
• Use correct dimension variable settings.
• Use cartesian, polar, and datum dimensions
• Use ordinate dimensions; e.g., tabular and baseline dimensions. related academic: (s2, s3, s8, s11)