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NATIONAL CAPITAL REGION
SCHOOLS DIVISION OFFICE QUEZON CITY
BATASAN HILLS NATIONAL HIGH SCHOOL
IBP Road, Batasan Hills, Quezon City

Supplementary
Learning Materials
Technology and Livelihood Education
TECHNICAL DRAFTING
QUARTER 1 – SLEM 6
 LEARNING COMPETENCY:
LO 6. PREPARING DRAWING USING COMPUTER-AIDED DESIGN
(CAD)
TLE_ICTTD10CA-Ic-j-
HOW TO USE THIS MODULE

Before you start answering the module, I want you to set aside other tasks
that will disturb you while enjoying the lessons. Read the simple instructions
below to successfully enjoy the objectives of this kit. Have fun!
1. Follow carefully all the contents and instructions indicated in every page of
this module.
2. Write on your notebook or any writing pad the concepts about the lessons.
Writing enhances learning that is important to develop and keep in
mind.
3. Perform all the provided activities in the module.
4. Let your facilitator/guardian assess your answers.
5. Analyze conceptually the posttest and apply what you have learned.
6. Enjoy studying!

AUTOCAD BLOCKS

EXPECTATIONS

At the end of the module, you should be able to:

1. identify the autocad common function keys;
2. create an autocad blocks; and
3. appreciate the use of computer aided designs in preparing drawings.

PRE-TEST
You will be challenged to recall your prior knowledge and previous experiences about Technical
Drafting. This phase will guide you in assessing yourself by answering the questions below
before you further explore the basics of preparing computer-aided drawings.

Directions: Choose the letter of the correct answer. Write the letter of your answer on a
separate sheet of paper.
1. Toggles orthomode.
A. F5 B. F6 C. F7 D. F8
2. It creates a new drawing.
A. ctrl+d B. ctrl+n C. ctrl+s D. ctrl+t
3. Toggles the sheet set manager.
A. ctrl+4 B. ctrl+5 C. ctrl+6 D. ctrl+7
4. This command ends a command, or will repeat the previous command if blank.
A. cntrol key B. enter key C. escape key D. space bar
5. Opens an existing drawing.
A. ctrl+e B. ctrl+n C. ctrl+o D. ctrl+p

LOOKING BACK
Activity
1. Let’s Bring Back Memories
Directions: Study and identify what type of object snap are the images below. Write your
answer on a separate sheet of paper.

How did you find the activity? Were you able to identify the images? If you identified it well,
Congratulations! You may now proceed to the next lesson. If not, you may ask the help of your
parents, brother or sister.

BRIEF INTRODUCTION

In this lesson you will be introduced to creating AutoCAD blocks to create your AutoCAD
library for symbols. By definition, a block is a collection of objects (lines, arcs, circles, text,
etc.) that form a more complex entity that normally represents an object in the real world, e.g.
a door, a chair, a window, a computer.

Creating AutoCAD Blocks

There are many advantages to using blocks, here are the major ones:
A. Blocks are a single entity. You can modify (move, copy, rotate) a block by selecting
only one object in it.
B. Using blocks can help keep your file size-down. AutoCAD stores block definitions in its
database. When you insert a block, AutoCAD only stores the name of the block, its
location (insertion point), scale and rotation. This can be very noticeable in large
drawing.
Command Keystroke Icon Location Result

Block wmake / B Home > Block Creates a block from separate

> Create entities (internal to current
Ceiling Outlet drawing)
Write wblock / W None None Creates a block and writes it to a file
Block (external)
Insert insert / I Home > Block Inserts a block (internal or external)
> Insert

Explode explode / X Home > Modify Explodes a block or other compound

> Explode object into its component parts
Here are the commands that you will need for using blocks in this lesson:
Steps in Creating AutoCAD Blocks
Ceiling Outlet Fixture
1. Lunch the AutoCAD.
2. Create a new initial layer.
3. Name it according to the standards.
4. Make the Zero Layer current.

NOTE: Zero Layer has special properties. When creating blocks, if the
objects in the block are drawn on Zero layer, they will assume the
properties of the current layer when they are inserted.
5. Select one of the symbols that you want to draw. This
example uses only arc/circle and line command.
6. Pull down the menu or the icon and a dialogue box
appears.
7. Enter information you want to include.

8. The first thing that you want to do is give your block a name. Type
Ceiling Outlet Fixture in the edit box beside Block Name. Some names
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 may need to be more descriptive, such as part number, or size. Give your
block a name by typing Ceiling Outlet Fixtures.

9. Pick the Pick Point button and then pick the midpoint of the bottom line.
Make sure that the retain button is selected, this will keep your objects on the
screen as individual objects. If you don't select a base point, your block will
default to 0,0,0 and you will insert all your blocks at the same location - the
origin.

(You will see in a moment that selecting the Pick Point with blocks is very
important when you later insert them into the drawing - always pick a
point that will allow you to place the block easily.)
10. Pick the Select Objects button and then select all the parts of your
drawing/object and press <ENTER>.
11. Select the drawing units you used to create the original object.
12. Pick the OK Button and the dialog box closes. Your drawing file will
contain a “Block Definition” called Ceiling Outlet Fixture.
Congratulations, you have created your first block!

If the default radio button "Convert to block" was checked, move your mouse over the
objects
and you will see that they all highlight - signifying that it is now one object.

Inserting the AutoCAD Blocks

Once a block is created you may insert it by typing, I <ENTER>.

Change to the Ceiling Outlet Fixture Layer. You will see this dialog box on the screen:

Ceiling Outlet Fixture

By default, all the options you need are pre-selected. Since you only have one
block in your drawing, its name is displayed.

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 Make sure that the Insertion Point - Specify On-screen box is checked, and
the Explode button is not checked. The Scale - Specify On-screen should not
be checked. Then press the OK button. Pick anywhere on your screen and you
will see the block appear. Notice how the block that you drew on the white Zero
Layer is now Red and on the Ceiling Outlet Fixtures layer.

You may now insert a Ceiling Outlet Fixture on every floor plans in your
drawing. You can also copy the block instead of re-inserting each time, but make
sure you know how to insert.

AutoCAD COMMON FUNCTION KEYS

F1: Display Help F7: Toggles GRID mode

F2: Toggles the Text Window F8: Toggles ORTHO mode
F3: Toggles OSNAP F9: Toggles SNAP mode
F4: Toggles Tablet mode F10: Toggles Polar Tracking
F5: Toggles ISOPLANE F11: Toggles Object Snap Tracking
F6: Toggles Dynamic UCS F12: Toggles Dynamic Input

SPECIAL KEY FUNCTIONS

Escape Key – Cancels the current command, menu or dialogue box.

Enter Key – Ends a command, or will repeat the previous command if blank.
Space Bar – Same as the Enter Key, except when entering key.

CTRL+0: Toggles Clean Screen CTRL+PAGE DOWN: Move to the next

CTRL+1: Toggles the Properties palette layout tab to the right of the current
tab
CTRL+2: Toggles the Design Center palette CTRL+D: Toggles Dynamic UCS
CTRL+3: Toggles the Tool Palettes window CTRL+E: Cycles through isometric
planes
CTRL+4: Toggles the Sheet Set Manager CTRL+F: Toggles running object
snaps
CTRL+6: Toggles the dbConnect Manager CTRL+G: Toggles the grid
CTRL+7: Toggles the Markup Set Manager CTRL+H: Toggles PICKSTYLE
CTRL+8: Toggles the QuickCalc calculator CTRL+I: Toggles COORDS
palette CTRL+J;CTRL+M: Repeat the last
command CTRL+9: Toggles the Command Window (pressing Enter does the
same) CTRL+A: Selects all objects in the drawing CTRL+L: Toggles Ortho mode
CTRL+SHIFT+A: Toggles Groups CTRL+N: Creates a new drawing
CTRL+B: Toggles Snap mode CTRL+O: Opens an existing drawing
CTRL+C: Copies an objects to Clipboard CTRL+P: Prints/plots the current drawing
CTRL+SHIFT+C: Copies objects to CTRL+R: Cycles through layout
viewports
Clipboard with Base Point CTRL+S: Saves the current drawing
CTRL+X: Cuts object to Clipboard CTRL+T: Toggles Tablet mode
CTRL+Y: Cancels the preceding Undo action
CTRL+SHIFT+V: Pastes data from the Clipboard as a Block
CTRL+V: Pastes data from the Clipboard
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CTRL+CTRL+S: Opens the Save As dialog box
CTRL+Z: Reverses the last action
CTRL+[;CTRL+\: Cancels the current Command (pressing Esc does the same)
CTRL+ PAGE UP: Moves to the next layout Tab to the left of the current tab

ACTIVITY

Activity # 1
Directions: Read and identify each statement. Write your answer on a separate
sheet of paper.

1. Toggles Clean Screen.

2. Move to the next layout tab to the right of the current tab.
3. Toggles running object snaps.
4. Toggles Dynamic Input
5. Copies objects to clipboard with base point.
6. Toggles the Command Window.
7. Cancels the preceding Undo action
8. Toggles the Text Window
9. Repeat the last command
10. Cancels the current command, menu or dialogue box.

Activity # 2
Directions: Create the following architectural symbols for AutoCAD
blocks that you will insert later on succeeding activities.

Symbol Name

Fixed Window

Single-swing door (90 degrees)

Pocket Sliding Door

Bi-fold Door
Sliding Door

Ramp

CHECKING YOUR UNDERSTANDING

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Task 1: Guide Questions

1. What is the importance of using blocks in your drawings?

2. Explain the importance of familiarizing yourself with different function and

special keys.

POST TEST

Directions: Read the following questions carefully and choose the letter that
best describes the statement. Use a separate sheet of paper to write your
answers.

1. Toggles orthomode.
A. F5 B. F6 C. F7 D. F8
2. It creates a new drawing.
A. ctrl+d B. ctrl+n C. ctrl+s D. ctrl+t
3. Toggles the sheet set manager.
A. ctrl+4 B. ctrl+5 C. ctrl+6 D. ctrl+7
4. This command ends a command, or will repeat the previous command if blank.
A. cntrol key B. enter key C. escape key D. space bar
5. Opens an existing drawing.
A. ctrl+e B. ctrl+n C. ctrl+o D. ctrl+p

References
Technology and Livelihood Education Information and Communication
Technology Learner’s Material – Technical Drafting

Prepared by: Checked by:

RECHELL Q. ARANAS PAUL JANSSEN V. ALVA

Teacher 1 Teacher II
Batasan Hills National High School Batasan Hills National High School

Validated by:

ROWELL NOROŇA BENEDICT ALAIN SEMBRANO

Master Teacher I Master Teacher I
Batasan Hills National High School Batasan Hills National High School