AutoCAD 2D II Module 24: Arraying - 74 -

ARRAYING

MODULE 24

Arraying There are commands in AutoCAD that can be used to increase your drawing productivity and ARRAY is one of them. You can use this command to produce copies of an object in rectangular and circular patterns. Using the Array Command The ARRAY command is used to create copies of objects in rectangular or polar (circular) patterns.

When you start the ARRAY command, the ARAAY dialogue box is prompted. In this dialogue box, you have two options:

Rectangular Array

Polar (circular) Array

Command Keyboard input / Alias Icon Menu

Array Array / AR

Modify > Array

LEARNING OUTCOME

After the completion of this module, you will be able to:

Utilize the ARRAY command to enhance drawing productivity.

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Row Offset

Column Offset

Rectangular Array The following steps describe the procedure to use the ARRAY command to produce rectangular patterns.

Step 1: Select "Rectangular Array". This will array the object in a row/column pattern.

Step 2: Next select the object you want to array, by pressing the button in the top right corner. Select the objects and then press Enter when finished.

Step 3: Enter the number of rows and column.

Step 4: Enter the Row offset. In the figure shown for example, the row offset is 20.

Step 1 Step 2

Step 5

Step 4

Step 7

Step 3

Step 6

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Step 5: Enter the Column offset. In the above figure, the Column offset is 15.

Step 6: Enter the Angle of array. The default value is 0.

Step 7: Press the Preview button to see the result before accepting.

Step 8: If you are happy with the result press Accept, if not press Modify to make the necessary changes.

Polar Array The following steps describe the procedure to use the ARRAY command to produce circular patterns.

Step 1: Select "Polar Array". This will array the object in a circular pattern.

Step 2: Next select the object you want to array, by pressing the button in the top right corner. Select the objects and then press Enter when finished.

Step 1 Step 2

Step 5

Step 4

Step 7

Step 3

Step 6

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Step 3: Enter the center point of the circular pattern.

Step 4: Select the method you want to use to array. You have three different methods to select form.

Step 5: Enter the total number of items.

Step 6: Enter the angle to fill.

Step 7: Press the Preview button to see the result before accepting. If you are happy with the result press Accept, If not press Modify to make the necessary changes.

Exercise 1: Draw the following object. Utilize the array command.

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In this exercise, after drawing the circle and the rectangle, enter the required data as shown below.

Exercise 2: Draw the following object. Utilize the array command.

Select this object.

Select the center of the

circle.

Tick this box.

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In this exercise, after drawing the circle and the rectangle, enter the required data as shown below.

Untick the box if it is

ticked.

Press More and set the

Object base point.

Select the Midpoint of the diagonal.

Select this object.

Select the center of the

circle.

Note: In the Array command, if you are not rotating items as they copied you should in most cases select the center of the object to be arrayed as the object base point.

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Task1 Details

Instructions: 1. Open the template IAT Module Template A3. 2. Setup the layers as per the layering scheme. 3. Draw the chair shown below. Your starting point is 175,150.

l

Drawing Specifications Name Template Units Text Style Font

AutoCAD 2D Exe- 24-1 IAT Module Template A3 Millimeters N/A N/A Layering Scheme

Objects on Layer Name Color Linetype Lineweight Construction Objects Construction Green Continuous N/A All Objects Object Black/White Continuous N/A Centerlines Center Blue Center N/A

Start Point 175,150

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4. Use the Array command to arrange the chairs as shown below. The row and column offset is 25.

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Task2 Details

Instructions: 1. Open the template IAT Module Template A3. 2. Setup the layers as per the layering scheme. 3. Draw the object shown below. Your starting point is 190,160.

Drawing Specifications Name Template Units Text Style Font

AutoCAD 2D Exe- 24-2 IAT Module Template A3 Millimeters N/A N/A Layering Scheme

Objects on Layer Name Color Linetype Lineweight Construction Objects Construction Green Continuous N/A All Objects Object Black/White Continuous N/A Centerlines Center Blue Center N/A

Start Point 190,160

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Module 24 Review Questions

1. You can use the Array command to produce copies of an object in rectangular and _______ patterns.

a. square b. circular c. triangular d. hexagonal

2. The number of rows in the following pattern is ______. a. 4 b. 5 c. 6 d. 2

3. The alias used to start the Array command is _______. a. AR b. ARR c. ARRAY d. RAY

4. Which of the following represents the Array command icon?

a.

b. c.

d.

5. What is the column offset in the object shown? a. 5 b. 10 c. 15 d. 20

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6. By default, if the row offset is ________ the rows are added downward. a. positive b. negative c. negative or positive d. big

7. By default, if the column offset is ________ the columns are added to the left.

a. positive b. negative c. negative or positive d. big

8. In the object shown the total number of items and angle to fill are ____ and _____ , respectively.

a. 8, 180 b. 8, 360 c. 8, 90 d. 7, 180

9. In the object shown the items were _______ as copied. a. rotated b. not rotated c. deleted d. refreshed

10. In the Array command, if you are not rotating items as they copied you should in most cases select the ________ of the object to be arrayed as the object base point.

a. end b. center c. bottom d. top