Course Title: Basic Technical Drawing (Drafting 1-2 Course #3035)

Instructor: Mr. Edward Gaudette, BS, MEd. CD. School Phone (602) 867-5553 Grade Level: 9, 10, 11, and 12.
Prerequisite(s): None

I. COURSE DESCRIPTION

These courses provide instruction in basic drafting techniques with emphasis on lettering, shape description, geometric construction, orthographic (multi view) projection, isometric projection, oblique projection, and dimensioning, sectional and auxiliary views. Students are exposed to new and emerging technologies to include introduction to computer aided drafting and design (CAD/D). During the final three weeks of Drafting 2, the student will produce a complete set of dimensioned, working drawings and an exploded isometric assembly drawing of an object selected by the student with the approval of the instructor.

II. PERFORMANCE OBJECTIVES and MINIMAL EDUCATIONAL EXPECTATIONS

At the completion of this course the student will be able to:

1. Demonstrate an understanding of the graphic language to include equipment usage.

a. Understand and use the alphabet of lines correctly
b. Use basic drafting equipment correctly and accurately
c. Produce single-stroke Gothic lettering
d. Understand how to measure using a standard architectural scale

2. Demonstrate the ability to do shape description problems and geometric constructions.

a. Divide a line segment into any number of equal parts
b. Transfer an angle to a new location
c. Use a French curve correctly and accurately
d. Know the c6nstruction technique for pentagons, hexagons, octagons, and ellipses

3.Demonstrate the ability to produce orthographic (multi view) projection drawings.

a. Produce three-view orthographic drawings
b. Understand the visualization of views - "Glass Box Technique"
c. Understand how to select views and how to align views
d. Understand which are the common measurements and why
e. Use hidden and center lines correctly
f. Make drawings to scale

4.Demonstrate the ability to produce Isometric models of orthographic views.

a. Centering isometric models in paper space using algorithms.
b. Determining the angles for isometric models.
c. Using ellipses in isometrics and their periods of rotation.
d. Drawing within the "glass box" a board drafting as well as a CAD technique.
e. Creating sectionals from isometric views.

5.Demonstrate the ability to produce oblique models of orthographic views.

a. Understand the degrees used in oblique models (30,45,60)
b. Understand the scaling that is involved in oblique models
c. Understand the reason for using oblique models in technical illustration.
d. Understand how to center an oblique drawing in paper space.
e. Understand the use of circles in oblique's instead of ellipses as in isometrics.
f. Understand how to construct a "glass box" for oblique's.

6.Demonstrate the ability to produce sectional views of isometric models.

a. Understand why a sectional view is used.
b. Understand that hatch marks are used to represent machine marks of a cut away.
c. Understand the use of angles in creating hatched areas.
d. Understand how to center a sectional model in paper space.
e. Understand the use of of ellipses in sectional views.
f. Understand how to construct a "glass box" for sectional models.

7.Demonstrate the ability to produce ACAD drawings of Orthographic, Isometric, Sectional and    Oblique Models.

a. Understand the various CAD commands: line, offset, polar lines, grid, snap, model space,     paper space, ddedit, circle, iso circle, ellipse, hatch, polyline, region, dimensioning techniques     and styles, properties, text, erase, delete and plot.
b. Understand how to center all types of models in paper space.
c. Understand how to correctly using ANSI 14.5 dimensioning techniques.
d. Understand the use of scale in CAD drawings.
e. Understand how to create ellipses in Isometric models in CAD
f. Understand how to construct a "glass box" in ACAD drawing setup.

III. STUDENT SYLLABUS AND WEKLY ITINERARY

A. Students become familiar with basic drafting and equipment, the reading of a scale, setting up drafting paper on the board, drawing layout-c, learning about single stroke gothic lettering, interpreting dimensions from a print and some basic centering of simple top view drawings in paper space. (1 Week)

B. Students learn how to use their drafting tools to create geometric objects and Practice Simple Geometry as it is applies to the skill of Drafting. They will be drawing ellipses, circles created by 3 points, bisecting an angle, drawing a variety of polygon's (pentagon, hexagon, octagon), transferring an angle, drawing an equilateral triangle, creating a perpendicular bisector, and other Drafting Geometric exercises. (2 Weeks)

C. Orthographic (Multi view) Projection (three-view drawings, visualizing views, glass box technique, choice of views, alignment of views, common measurements, hidden lines, center lines, accounting for each edge, drawing to scale, etc .(4 Weeks)

D. Dimensioning and Tolerance (types of dimensions, styles of dimensioning, dimensioning angles, arcs, contours, rounds and fillets, notes and finish marks. (3 Weeks)

* End of First Quarter *

E. Sectional Views (full sections, half sections, broken-out sections, revolved sections, ribs and spokes in sections, section lines, conventional breaks,
and dimensioning in sectional views).(2 Weeks)

F. Auxiliary Views (partial views, true-length lines, true size and shape surfaces, and Descriptive Geometry. (1 Week)

G. Pictorial Drawings (isometric, dimetric; oblique - cavalier, cabinet, general; perspective, one and two-point perspectives.(4 Weeks

H. Computer Aided Drafting and Design: Students will be redrawing all of the orthographic, oblique, isometric and sectional views in ACAD 2002 using the following commands: line, offset, text, dimscale, dimension linear, dimension angular, dimension diameter, dimension radius, aligned dimensions, dimension properties, polar settings, iso circle, circle and debit commands.(2 Weeks)

I. Individual Project Assignment (produce a complete set of working drawings and an isometric assembly drawing of the same approved object).(2 Weeks)
drawings and an isometric assembly drawing of the same approved object)

* End of Semester - Completion of Course*

IV. GRADING PROCEDURES

Students' grades will be determined by the accumulation of points assigned for the various assignments. The standard point value per drawing will be 0 to 9 points, with 10 points being awarded for truly exceptional work. Points will be totaled and the following scale used to determine term (nine weeks) grades: 90-100% = A, 80-89% = S, 70-79% = C, 60-69% = D, less than 60% = F. Semester grades will be determined using the standard 2/5, 2/5, 1/5 scale (2/5 for the first term, 2/5 for the second term, and 1/5 for the semester exam). Students are encouraged to turn in extra credit work to increase their point totals. Extra credit work, however, is work above and beyond that which is assigned as a portion of the course. All assigned work must be completed before any extra credit work will be approved by the instructor.
The last nine weeks of Drafting 2 are involved with the student working on an individual project of their own selection with the instructor's approval. To receive a passing grade, the student must complete both the dimensioned orthographic and the exploded isometric assembly drawings prior to the end of the grading period. Failure to complete these two drawings during the nine week grading period will result the student receiving a grade of "F" for the semester. A semester exam may or may not be given depending upon where the students are in regard to completion of their individual projects.