2. Objectives
At the end of the unit, the students shall be able to:
1.1 Distinguish the difference between Computer-
Aided Drafting with manual drafting method
accurately.
2.1 Write and essay on the advantages and
disadvantages of CAD over manual drafting.
3.1 Exhibit the value of stewardship by taking good
care of the things that they use.
3.2 Show appreciation for advances in technology that
enhances productivity and work efficiency.
3. What is CAD and CADD?
CAD stands for Computer -Aided
Drawing systems
CADD stands for Computer-Aided
Drafting and Design systems
4. What is CAD and CADD?
CAD and CADD are systems that use
computer technology to aid in the design
and especially the performance of drafting
functions of a part or product, including
entire buildings.
They are both a VISUAL (or drawing) and
SYMBOL-based method of
communication whose conventions are
particular to a specific technical field.
CADD is designed to graphically solve
more complex problems through the use
of dynamic mathematics modeling
compared to CAD.
5. Advantages of CAD?
Extremely accurate since several tools
can help you to check your drawings for
errors
Consistent
Faster, since the whole drawing need not
be redrawn
Easily changeable; thus, shortening
design cycle
Clean and neat
Viewable in different angles (3D drawings)
6. Advantages of CAD?
Choice of correct scale and proper
placement is eliminated since these can
be adjusted as required during the
creation of the final draft
Enables designers to layout and develop
work on screen, print it out and save it for
future editing, saving time on their
drawings
The drawing can be subdivided in smaller
parts, that can be reused to be worked on
by several drafters
7. Disadvantages of CAD?
Psychomotor skills not developed
Output can not be viewed in hard copy
without a plotter
Literacy in computer is needed
Power failure
One CAD operator can replace at least 3-5
draftsmen using traditional methods
8. Some CAD Programs
for technical drawings
AutoCAD | SketchUp | ArchiCAD |
Inventor | Microstation | Vectorworks |
Allplan
for renderings
3DSMax | Maya | Rhino | V-Ray |
Mental Ray
10. Objectives
At the end of the unit, the students shall be able to:
1.1 Define and identify the basic components
of the AutoCAD interface.
1.2 Discuss the different AutoCAD command
methods.
1.3 Explain the nature of the different drawing
setup commands.
2.1 Start-up AutoCAD program correctly.
2.2 Use the different command methods in
executing commands correctly.
2.3 Setup drawing correctly.
3.1 Exhibit the value of stewardship by taking good
care of the things that they use.
3.2 Show the value of obedience by following rules
correctly.
11. How to start-up AutoCAD?
Starting New Drawing
Opening Existing Drawing
Using Template to Start New Drawing
Using Wizard to Start New Drawing
12. AutoCAD Interface
Title Bar
Menu Bar
Docked
Toolbar:
Standard
Toolbar
Docked
Toolbar:
Object
Properties
Toolbar
Floating
Toolbar
Docked
Toolbar:
Draw
Toolbar
Docked
Toolbar:
Modify
Toolbar
Crosshair
Graphics Window
UCS Icon
Command Window
Status Bar
15. How command methods work?
1. Choosing a menu item
a. Pull-down menus
b. Screen menus (disabled by default)
c. Cursor menus
2. Clicking a tool on the toolbar
3. Entering a command
16. What are the drawing setups?
1. Units
2. Limits
3. Grids
4. Snap
5. Layer
6. Ortho
18. Objectives
At the end of the unit, the students shall be able to:
1.1 Explain correctly the varied concepts of the different
Drawing Commands
1.2 Discuss the importance of Coordinate Systems in
Drawing Commands.
21 Demonstrate skillfully the proper way of using the
drawing commands.
2.2 Plot points using different CAD coordinate systems
correctly.
3.1 Exhibit the value of stewardship by taking good care of
the things that they use.
3.2 Show the value of obedience by following rules.
3.3 Practice proper time management.
3.4 Show patience by working diligently.
19. How to draw Lines?
2. by using Coordinate Systems
Absolute Coordinate System
Relative Coordinate System
Polar Coordinate System
3. by using Extend option
1. by using Line Command
4. by using Offset Command
5. by using Fillet Command
5. by using Copy or Move Commands
21. 1. What is the meaning of CAD?
2. What is the meaning of CADD?
3-5. Name 3 advantages of CAD
6-8. Name 3 disadvantages of CAD
22. Name the parts of the AutoCAD window
7
8
9
10
11
12
13
14
15
16
23. 19. What is the coordinate system to be used if
it is based from the last point given?
20. What is the coordinate system to be used if
it is based from the origin?
21. What is U in the AutoCAD prompt stands
for?
22. What is C in the AutoCAD prompt stands
for?
23. What is the symbol used for Number 20?
