Creation of geometries by Coordinate system methods using AutoCad

AIM: To create diffrent geometrics shape given above by coordinate system using line and circle tool

INTRODUCTION:

COORDINATE SYSTEM:It is a method which allow to define the placement of points to determine the position of point/geometricsshape.This system is mainly of two types thy are

ABSOLUTE COORDINATE :It is a cartesian form where points are entered at some distance in X and Y axis with respect to origin

RELATIVE COORDINATE SYSTEM:In this the reference point is the previous point in the drawing not related to origin

1. RELATIVE RECTANGULAR COORDINATE : Rectangular coordinate specify each point in a pair of numerical in X and Y axis. In command line it is represented as @x axis distance eg.@5,10
2. Relative polar coordinate :Polar coordinate specify one radial distance and one angle of particular point w.r.t previous point .In command line it is entered as @distance

DIRECT DISTANCE METHOD:It is another method used for drawing in autocad.In this method user can draw any object any object just by pointing cursor in required direction and by entering distance value

1. LINE TOOL:Line command can be searched by entering L in command box or from ddraw panel in ribbon. line is draw using several random point it is used to draw required shapes with help of coordinate system
2. CIRCLE TOOL: Circle command can be searched in command line by entering C or from draw panel in ribbon .Circle can be drawn wih 5 diffrent option

• Circle and radious :First step is to enter the center coordinate and enter radious value
• Circle and diameter : Enter centre coordinate and enter diameter value
• Circle with 2 Points:Circle is drawn by selecting 2 points
• Circle with 3 points:Circle is drawn by selecting 3 points
• Tan,Tan,Radious:Circle is drawn by selecting 2 tangents and entering required radious
• Tan,Tan,tan:Circle is drawn by entering 3 tangents points on the line

PROCEDURES:Creation of drawing sheet

• Go to start menu click Autocad
• Click on start drawing
• From command line enter start up:1
• Go to application menu select new
• Select imperial system and start from scratch option
• From advance setting select decimal option
• Set angle unit as decimal degree
• Enter limits in command line

1. CREATE THE GIVEN GEOMETRY GIVEN IN P-1

• Using absoulute coordinate system

1. Select the line tool from command box by entering L
2. Specify atarting point (2,1) in command box
3. Specify second coordinate point (8,1)
4. Specify third coordinate point (8,2)
5. Specify fourth coordinate point (3,2)
6. Specify fifth coordinate point (3,6)
7. Specify sixth coordinate point (8,6)
8. Specify seventh coordinate point (8,7)
9. Specify eigth coordinate point (2,7)
10. Click close in command box

• RESULT

2.Creating the Geometry of P-2

Using the relative rectangular coordinate system

• Select the line command by enterinf L
• Specify starting point 1 As (2,1)
• Specify next coordinate point 2 as @3,0 in command line
• Specify next coordinate point 3 as @0,4 in command line
• Specify next coordinate point 4 as @1,0 in command line
• Specify next coordinate point 5 as @0,-4 in command line
• Specify next coordinate point 6 as @3,0 in command line
• Specify next coordinate point 7 as @-2,7 in command line
• Specify next coordinate point 8 as @3,0 in command line
• Click on close command line

• RESULT
• 

3.Creating the geometry in p-4 using absoulute coordinate system

PROCEDURE:

1. Select the line L from command box
2. Specify the starting point 1 as (2,1) in the command line
3. Specify the next coordinate of point 2 (3,1) in the command line
4. Specify the next coordinate of point 3 (3,5) in the command line
5. Specify the next coordinate of point 4 (5,3) in the command line
6. Specify the next coordinate of point 5 (7,5) in the command line
7. Specify the next coordinate of point 6 (7,1) in the command line
8. Specify the next coordinate of point 7 (8,1) in the command line
9. Specify the next coordinate of point 8 (8,8) in the command line
10. Specify the next coordinate of point 9 (7,8) in the command line
11. Specify the next coordinate of point 10 (5,5) in the command line
12. Specify the next coordinate of point 11 (3,8) in the command line
13. Specify the next coordinate of point 12 (2,8) in the command line
14. Click close on command line

4.CREATING THE GEOMETRY OF P-5 USING THE DIRECT DISTANCE METHOD

PROCEDURE:

1. Select the line tool from command box
2. Specify the starting coordinateof point 1 as (2,1) in the command line
3. Enter the length of point 2 as 1 in the command line positive x axis
4. Enter the length of point 3 as 7 in the command line positive y axis
5. Enter the length of point 4 as 5 in the command line positive x axis
6. Enter the length of point 5 as 7 in the command line negative y axis
7. Enter the length of point 6 as 3 in the command line negative x axis
8. Enter the length of point 7 as 1 in the command line negative y axis
9. Enter the length of point 8 as 4 in the command line positive x axis
10. Enter the length of point 9 as 8 in the command line positive y axis
11. Enter the length of point 10 as 7 in the command line negative x axis
12. click close on command line

• Creating the geometry of p-7 using absolute coordinate system

PROCEDURE:

1. Select the line tool from command bar by entering L
2. Specify the starting coordinate of point 1 as 2,1 in command line
3. Enter the length of point 2 as (10,1) in the command line
4. Enter the length of point 3 as (10,7) in the command line
5. Enter the length of point 4 as (2,7) in the command line
6. Click close in the command line
7. Select the line tool again from command line
8. Enter the length of point 5 as (3,2) in the command line
9. Enter the length of point 6 as (5,2) in the command line
10. Enter the length of point 7 as (5,5) in the command line
11. Enter the length of point 8 as (3,5) in the command line
12. Click close in the command line
13. Select the line tool again from command line
14. Enter the length of point 9 as(6,2) in the command line
15. Enter the length of point 10 as (8,2) in the command line
16. Enter the length of point 11 as (8,5) in the command line
17. Enter the length of point 12 as (6,5) in the command line
18. Click close in the command line

• CREATING THE GEOMETRY OF P-8 USING THE DIRECT DISTANCE ENTRY METHOD

PROCEDURE:

1. Select the line toolfrom command bar by entering L
2. Specify the starting coordinate of point 1 as (0,0) in the command line
3. Enter the length of point 2 as 10 in the command line positive x axis
4. Enter the length of point 3 as 2 in the command line positive x axis
5. Enter the length of point 4 as 4 in the command line positive x axis
6. Enter the length of point 5 as 4 in the command line positive x axis
7. Enter the length of point 6 as 3 in the command line positive x axis
8. Enter the length of point 7 as 2 in the command line positive x axis
9. Enter the length of point 8 as 8 in the command line positive x axis
10. Enter the length of point 9 as 2 in the command line positive x axis
11. Enter the length of point 10 as 3 in the command line positive x axis
12. Enter the length of point 11 as 4 in the command line positive x axis
13. Enter the length of point 12 as 4 in the command line positive x axis
14. Click close in the command line

• CREATING THE GEOMETRY OF P-9 USING ABSOLUTE COORDINATE SYSTEM

PROCEDURE

• Select the line tool from command barby entering L
• Specify the coordinate of point 1 as (1,1) in the command line
• Specify the next coordinate point 2 as (6,1) in the command line
• Specify the next coordinate point 3 as (6,3) in the command line
• Specify the next coordinate point 4 as (3,3) in the command line
• Specify the next coordinate point 5 as (3,2) in the command line
• Specify the next coordinate point 6 as (2,2) in the command line
• Specify the next coordinate point 7 as (2,4) in the command line
• Specify the next coordinate point 8 as (5,4) in the command line
• Specify the next coordinate point 9 as (5,6) in the command line
• Specify the next coordinate point 10 as (1,8) in the command line
• Click close in the command line

• CREATING THE GEOMETRY OF P-10 USING ABSOULUTE COORDINATE SYSTEM

• PROCEDURE

1. Select the line tool from command bar by entering L
2. Specify the starting point 1 as (1,1) in the command line
3. Specify the next coordinate point 2 as (3,1) in the command line
4. Specify the next coordinate point 3 as (3,4) in the command line
5. Specify the next coordinate point 4 as (6,4) in the command line
6. Specify the next coordinate point 5 as (6,8) in the command line
7. Specify the next coordinate point 6 as (1,8) in the command line
8. Click close in the command box
9. Select the line tool from command bar by entering L
10. Specify the next coordinate point 7 as (2,5) in the command line
11. Specify the next coordinate point 8 as (5,5) in the command line
12. Specify the next coordinate point 9 as (5,7) in the command line
13. Click close in the command box

• CREATING THE GEOMETRY PROFILE WOD USING RELATIVE POLAR COORDINATE SYSTEM

• PROCEDURE

• Select the line tool from command bar by entering L
• Specify the Starting coordinate of point 1 as (0,0) in the command line
• Specify the next coordinate point 2 as @10<0 in the command line
• Specify the next coordinate point 3 as @1<90 in the command line
• Specify the next coordinate point 4 as @2<180 in the command line
• Specify the next coordinate point 5 as @4<90 in the command line
• Specify the next coordinate point 6 as @2<0 in the command line
• Specify the next coordinate point 7 as @1<90 in the command line
• Specify the next coordinate point 8 as @5.83<121 in the command line
• Specify the next coordinate point 9 as @5.83<31 in the command line
• Specify the next coordinate point 10 as @2<0 in the command line
• Specify the next coordinate point 11 as @5<270 in the command line
• Specify the next coordinate point 12 as @2<180 in the command line
• Click close in the command box
• Select the circle and radious tool from draw panel
• Enter the circle of radious of 2 in commad line

• CRREATING THE GEOMETRY OF QUEEN POST TRUSS USING RELATIVE POLAR COORDINATE SYSTEM

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• PROCEDURE
• Select the line tool from commnd bar
• Specify the point 1 as (1,1) in the command line
• Specify the point 2 as @4<90 in the command line
• Specify the point 3 as @5<90 in the command line
• Specify the point 4 as @5<90 in the command line
• Specify the point 5 as @4<90 in the command line
• Press ESC to end the command line
• Press ENTER to repeat the line command
• Specify the point 6 as (1,5) in the command line
• Specify the point 7 as (2,5) in the command line
• Specify the point 8 as @1<90 in the command line
• Specify the point 9 as @2<215 in the command line
• Specify the point 10 as @2<45 in the command line
• Specify the point 11 as @1<270 in the command line
• Press ESC to cancel the line command

• CREATING THE GEOMETRY OF MONO PITCH USING ABSOLUTE COORDINATE SYSTEM

• PROCEDURE
• Select the line tool from command bar by entering L
• Specify the point 1 as (1,1) in the command line
• Specify the next point 2 as (7,1) in the command line
• Specify the next point 3 as (7,3) in the command line
• Specify the next point 4 as (3,1) in the command line
• Specify the next point 5 as (3,0.667) in the command line
• Specify the next point 6 as (5,1) in the command line
• Specify the next point 7 as (5,1.333) in the command line
• Specify the next point 8 as (7,1) in the command line
• Press ESC to cancel the line command