National Chiayi University Syllabus

National Chiayi University Syllabus Department of Civil and Water Resources Engineering

Course: Engineering Drawing Credit: 2 Hours: 2

I. Course Description: This course covers technical sketching, lettering, applied geometry for graphic representation and problem solving. Emphasis placed on orthographic projection, auxiliary views, pictorial projections, basic dimensioning, and sectioning with adherence to drafting standards. Traditional drafting and design instruments will be used.

II. Teaching Objectives: Upon completion the successful student will have demonstrated the following skills: 1. Construct letters and numerals in a legible free-hand form 2. Construct drawings using orthographic projection methods 3. Provide dimensions and notes using the proper drafting standards 4. Draw oblique and isometric pictorials 5. Draw and identify the various types of section and auxiliary views. 6. Interpret engineering blueprints and drawings

III. Class Schedule Week Outline Description 1 Introduction Describe the graphic “language of engineering ” and identify the different Types of drawing standards. Describe drawing frame and 2 Instrumental Drawing Explain and demonstrate techniques in instrumental drafting methods and basics of lettering Tools: 6 or 8 inches compass, Divider, 6 or 8 inches 45 degree triangle, 8 or 10 inches 30-60 degree triangle, Architectural scale (fractional), Engineer’s scale (decimal inches), Metric scale (millimeters), Mechanical pencil. (Lead holder), Leads: “H”, “ 2H”, & “4H” ,Eraser, Drafting Brush Irregular (French) Curve. Circle Template, Isometric ellipse template. 3 Basic geometry Recognize two-dimensional geometric forms: Principles of drawing lines Draw parallel lines Curved-lines Draw perpendicular lines Draw Tangent line to Two Circles Draw an arc through the given points Draw arcs tangent to the given circles Bisect line, angle & ARC Divide line into a given number of equal parts Draw polygons 4 Applied geometry Apply geometric form terminology Draw Arcs tangent to given lines Draw octagon; hexagon & pentagon Draw ellipse two circle method Draw ellipse four center method 5 Basics of projection: Basic concept of projection Point and plane in Space coordinate system and space quadrants Point position and coodinates Visualize the planes of projection Axis of projection 6 Line and plane in Linear projection space Relationships of line and projection plane Projection length and its visibility Relationships of surface and projection plane 7 Third plane of Introduction of Third plane of projection projection Project sectional views to display Internal details of orthographic views Otherwise not seen. 8 Point, line , and plane Relationship of: Point and line Point and plane Two lines Line and plane Angle of a line and plane Two Planes

9 Orthographic Parallel projection Projections First angle projection Third angle projection Combination of different views Transformation a perspective projection Fillet and round Read a projection drawing 10 Midterm 11 Basic dimensioning Recognize standardized dimensioning Symbols and apply correct Dimensioning techniques to a working drawing. Dimension & extension Lines 12 Auxiliary Views Project an auxiliary view from any Orthographic view Partial view 13 Sectional Views Section and section line Cutting line, cutting plane, and cutting Plane line Section crosshatch style Hidden surfaces & edges. Draw different types of sectioning Oblique section 14 Axonometric Oblique straight line projections / oblique Oblique section projections Selection of object azimuth 15 Perspective concept and Basic terms o f perspective projections projections perspective position, standpoint and objects combination method oblique and isometric pictorials. general pictorial projections 16 Intersection Intersection of lines and intersection of surfaces 17 Developed view Elementary method of developed view for cylinder, cones , and sphere 18 Final Exam

IV. Evaluation： There will be two major examinations during the semester: a midterm and a final. The midterm will be worth 30% of the final grade. The final test will be worth 30%. The remaining 40% of the final grade will be completed with laboratory exercises.