Creation of geometries by Coordinate system methods using AutoCad

1. Create the geometries from P1 to P2 using all the coordinates system methods. You need to use the Line tool to create the geometries. Where required you need to use the circle tool.
Please read the drawings and find out the missing dimensions before working on the sketches.

Ans :

AIM :

1. Create the geometries from P1 to P2 using all the coordinates system methods. You need to use the Line tool to create the geometries. Where required you need to use the circle tool.
   
   
2. Civil related problems : Draw the profile and the trusses using any coordinate system methods. the dimensions are there for references

INTRODUCTION :

• Before going to the drawing we should know about the coordinates systems. In Autocad there are two coordinate system: cartesian and polar.
• To these coordinate systems the absolute and relative coordinate system the absolute and relative coordinate of autocad as are applicable
• Coordinate system : Coordinate system is a system where numbers are used to determine the unique position of points or other geometric elements
• Also coordinates in Autocad can be set by mouse , input the values of coordinates in the command line and enter coordinates using dynamic input

There are three types of co-ordinate systems

1. Absolute coordinates systems
2. Relative coordinate systems
3. Relative rectangular coordinates
4. Relative polar coordinates
5. Direct distance entry

• Absolute coordinate system : In this system all points are established at some distance in the x and y axis (sometimes z-axis) from a common origin (usually 0,0)
• Relative coordinate system : The location of a relstive coordinate is defined by its distance from a reference point . In Autocad , when using this system the first point of the drawing is always absolute that is it is established with respect to origin (0,0) and then all the succesive positions are established with respect to their preceding point.this system is further classified as
• Relative rectangular coordinates : It is a coordinate system that specifies each point by a pair of numerical coordinates in the x-axis and y-axis .In this system the points succeeding the first point are typed in as @x,y in the command line
• Relative polar coordinate : This system specifies the distance and angle of a particular point with respect to its previous point .In relative polar coordinate system, points are established by typing @distance <angle[ENTER] in the command line

Commands used :

• Line command
• Dimlinear command
• Text command
• Circle command

Create the geometries from P1 using all the coordinates system methods.

a. Absolute coordinate system :

Procedure :

1. Select line tool from the ribbon tab/ write line in command box, it will show "specify the first point "
2. Now, Enter the first point as (2,1)
3. Next , the command ask to enter next point
4. Specify the next point as (8,1)
5. Specify the next point as (8,2)
6. Specify the next point as (3,2)
7. Specify the next point as (3,6)
8. Specify the next point as (8,6)
9. Specify the next point as (8,7)
10. Specify the next point as (2,7)
11. Specify the next point as (2,1), else click on the close in command prompt

RESULT :

b .Relative rectangular coordinate system

• Procedure :

1. Select the line tool by entering ' LINE' command in the command tab
2. specify the starting coordinate of point 1 as 2,1 in the command line
3. specify the next coordinate of point 2 as @6,0 in the command line
4. specify the next coordinate of point 3 as @0,1 in the command line
5. specify the next coordinate of point 4 as @-5,0 in the command line
6. specify the next coordinate of point 5 as @0,4 in the command line
7. specify the next coordinate of point 6 as @5,0 in the command line
8. specify the next coordinate of point 7 as @0,1 in the command line
9. specify the next coordinate of point 8 as @-6,0 in the command line
10. Click close on the command line

RESULT :

c. Relative polar coordinate system

• Procedure :

1. Select the line tool by entering ' LINE' command in the command tab
2. specify the starting coordinate of point 1 as 2,1in the command line
3. specify the next coordinate of point 2 as @6<0 in the command line
4. specify the next coordinate of point 3 as @1<90 in the command line
5. specify the next coordinate of point 4 as @5<180 in the command line
6. specify the next coordinate of point 5 as @4<90 in the command line
7. specify the next coordinate of point 6 as @5<0 in the command line
8. specify the next coordinate of point 7 as @1<90 in the command line
9. specify the next coordinate of point 8 as @6<180 in the command line
10. Click close on command line

RESULT :

d. Direct distance entry method

• Procedure :

1. Select the line tool by entering ' LINE' command in the command tab
2. specify the starting coordinate of point 1 as 2,1in the command line
3. specify the length of point 2 as 6 in the command line towards +ve x-axis
4. specify the next coordinate of point 3 as 1 in the command line towards +ve y-axis
5. specify the next coordinate of point 4 as 5 in the command line towards -ve x-axis
6. specify the next coordinate of point 5 as 4 in the command line towards +ve y-axis
7. specify the next coordinate of point 6 as 5 in the command line towards +ve x-axis
8. specify the next coordinate of point 7 as 1 in the command line towards +ve y-axis
9. specify the next coordinate of point 8 as 6 in the command line towards -ve x-axis
10. Click close on command line

RESULT :

Create the geometries from P2 using all the coordinates system methods.

a. Absolute coordinate system :

Procedure :

1. Select line tool from the ribbon tab/ write line in command box, it will show "specify the first point "
2. Now, Enter the first point as (2,1)
3. Next , the command ask to enter next point
4. Specify the next point as (5,1)
5. Specify the next point as (5,5)
6. Specify the next point as (6,5)
7. Specify the next point as (6,1)
8. Specify the next point as (9,1)
9. Specify the next point as (7,8)
10. Specify the next point as (4,8)
11. Click 'close' on command line

RESULT :

b .Relative rectangular coordinate system

• Procedure :

1. Select the line tool by entering ' LINE' command in the command tab
2. specify the starting coordinate of point 1 as 2,1 in the command line
3. specify the next coordinate of point 2 as @3,0 in the command line
4. specify the next coordinate of point 3 as @0,4 in the command line
5. specify the next coordinate of point 4 as @1,0 in the command line
6. specify the next coordinate of point 5 as @0,-4 in the command line
7. specify the next coordinate of point 6 as @3,0 in the command line
8. specify the next coordinate of point 7 as @-2,7 in the command line
9. specify the next coordinate of point 8 as @-3,0 in the command line
10. Click close on the command line

RESULT :

c. Relative polar coordinate system

• Procedure :

1. Select the line tool by entering ' LINE' command in the command tab
2. specify the starting coordinate of point 1 as 2,1in the command line
3. specify the next coordinate of point 2 as @3<0 in the command line
4. specify the next coordinate of point 3 as @4<90 in the command line
5. specify the next coordinate of point 4 as @1<0 in the command line
6. specify the next coordinate of point 5 as @4<270 in the command line
7. specify the next coordinate of point 6 as @3<0 in the command line
8. specify the next coordinate of point 7 as @7<106 in the command line
9. specify the next coordinate of point 8 as @3<180 in the command line
10. Click close on command line

RESULT :

d. Direct distance entry method

• Procedure :

1. Select the line tool by entering ' LINE' command in the command tab
2. specify the starting coordinate of point 1 as 2,1in the command line
3. specify the length of point 2 as 3 in the command line towards +ve x-axis
4. specify the next coordinate of point 3 as 4 in the command line towards +ve y-axis
5. specify the next coordinate of point 4 as 1 in the command line towards +ve x-axis
6. specify the next coordinate of point 5 as 4 in the command line towards -ve y-axis
7. specify the next coordinate of point 6 as 3 in the command line towards +ve x-axis
8. specify the next coordinate of point 7 as 7 in the command at an angle of <106 from +ve x-axis direct while keeping polar tracking on
9. specify the next coordinate of point 8 as 3 in the command line towards -ve x-axis
10. Click close on command line

RESULT :

Create the geometries from P4 to P10 using all the coordinates system methods.

• Steps to creating the geometry in P-4 using Absolute coordinate system

1. Select the Line tool by entering 'LINE' command in the command tab.
2. Specify the starting coordinate of point 1 as 2,1 in the command line.
3. Specify the next coordinate of point 2 as 3,1 in the command line.
4. Specify the next coordinate of point 3 as 3,5 in the command line.
5. Specify the next coordinate of point 4 as 5,3 in the command line.
6. Specify the next coordinate of point 5 as 7,5 in the command line.
7. Specify the next coordinate of point 6 as 7,1 in the command line.
8. Specify the next coordinate of point 7 as 3,1 in the command line.
9. Specify the next coordinate of point 8 as 8,8 in the command line.
10. Specify the next coordinate of point 9 as 7,8 in the command line.
11. Specify the next coordinate of point 10 as 5,5 in the command line.
12. Specify the next coordinate of point 11 as 3,8 in the command line.
13. Specify the next coordinate of point 12 as 2,8 in the command line.
14. Click 'Close' on the command line

RESULT :

• Steps to creating the geometry in P-5 using Relative rectangular coordinate system

1. Select the Line tool by entering 'LINE' command in the command tab.
2. Specify the starting coordinate of point 1 as 2,1 in the command line.
3. Specify the next coordinate of point 2 as @1,0 in the command line.
4. Specify the next coordinate of point 3 as @0,7 in the command line.
5. Specify the next coordinate of point 4 as @5,0 in the command line.
6. Specify the next coordinate of point 5 as @0,-6 in the command line.
7. Specify the next coordinate of point 6 asl-3,0 in the command line.
8. Specify the next coordinate of point 7 as @0,-1 in the command line.
9. Specify the next coordinate of point 8 as @4,0 in the command line.
10. Specify the next coordinate of point 9 as @0,8 in the command line.
11. Specify the next coordinate of point 10 as @-7,0 in the command line.
12. Click 'Close' on the command line

RESULT :

• Steps to creating the geometry in P-7 using Absolute coordinate system

1. Select the Line tool by entering 'LINE command in the command tab
2. Specify the starting coordinate of point 1 as 2,1 in the command line.
3. Specify the next coordinate of point 2 as 10,1 in the command line.
4. Specify the next coordinate of point 3 as 10,7 in the command line.
5. Specify the next coordinate of point 4 as 2,7 in the command line.
6. Click 'Close' on the command line.
7. Select the Line tool by entering 'LINE command in the command tab.
8. Specify the next coordinate of point 5 as 3,2 in the command line
9. Specify the next coordinate of point 6 as 5,2 in the command line
10. Specify the next coordinate of point 7 as 5,5 in the command line.
11. Specify the next coordinate of point 8 as 3,5 in the command line.
12. Click 'Close' on the command line
13. Select the Line tool by entering LINE command in the command tab
14. Specify the next coordinate of point 9 as 6,2 in the command line.
15. Specify the next coordinate of point 10 as 8,2 in the command line.
16. Specify the next coordinate of point 11 as 8,5 in the command line
17. Specify the next coordinate of point 12 as 6,5 in the command line
18. Click Close' on the command line

RESULT :

• Steps to creating the geometry in P-8 using Relative rectangular coordinate system

1. Select the Line tool by entering 'LINE' command in the command tab.
2. Specify the starting coordinate of point 1 as 0,0 in the command line.
3. Specify the next coordinate of point 2 as @10,0 in the command line.
4. Specify the next coordinate of point 3 as @0,2 in the command line.
5. Specify the next coordinate of point 4 as @-4,0 in the command line.
6. Specify the next coordinate of point 5 as @0,4 in the command line.
7. Specify the next coordinate of point 6 as #3,0 in the command line.
8. Specify the next coordinate of point 7 as @0,2 in the command line.
9. Specify the next coordinate of point 8 as @-8,0 in the command line.
10. Specify the next coordinate of point 9 as @0,-2 in the command line.
11. Specify the next coordinate of point 10 as @3,0 in the command line.
12. Specify the next coordinate of point 11 as @0,-4 in the command line.
13. Specify the next coordinate of point 12 as @-4,0 in the command line.
14. Click 'Close' on the command line.

RESULT :

• Steps to creating the geometry in P-9 using Absolute coordinate system

1. Select the Line tool by entering 'LINE' command in the command tab.
2. Specify the starting coordinate of point 1 as 1,1 in the command line.
3. Specify the next coordinate of point 2 as 6,1 in the command line.
4. Specify the next coordinate of point 3 as 6,3 in the command line.
5. Specify the next coordinate of point 4 as 3,3 in the command line.
6. Specify the next coordinate of point 5 as 3,2 in the command line.
7. Specify the next coordinate of point 6 as 2,2 in the command line.
8. Specify the next coordinate of point 7 as 2,4 in the command line.
9. Specify the next coordinate of point 8 as 3,4 in the command line.
10. Specify the next coordinate of point 9 as 5,6 in the command line.
11. Specify the next coordinate of point 10 as 1,8 in the command line.
12. Click 'Close' on the command line

RESULT :

• Steps to creating the geometry in P-10 using Absolute coordinate system

1. Select the Line tool by entering 'LINE' command in the command tab.
2. Specify the starting coordinate of point 1 as 1,1 in the command line.
3. Specify the next coordinate of point 2 as 3,1 in the command line.
4. Specify the next coordinate of point 3 as 3,4 in the command line.
5. Specify the next coordinate of point 4 as 6,4 in the command line.
6. Specify the next coordinate of point 5 as 6,8 in the command line.
7. Specify the next coordinate of point 6 as 1,8 in the command line.
8. Click close on the command line
9. Select the Line tool by entering 'LINE' command in the command tab.
10. Specify the next coordinate of point 7 as 2,5 in the command line.
11. Specify the next coordinate of point 8 as 5,5 in the command line.
12. Specify the next coordinate of point 9 as 5,7 in the command line.
13. Specify the next coordinate of point 10 as 2,7 in the command line.
14. Click 'Close' on the command line.

RESULT :

(B).Civil related problems : Draw the profile and the trusses using any coordinate system methods. the dimensions are there for references

• Steps for creating the wood profile using direct distance entry method

1. Select the Line tool by entering 'LINE' command in the command tab.
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 towards +ve x-axis.
4. Enter the length of point 3 as 1 in the command line towards +ve y-axis.
5. Enter the length of point 4 as 2 in the command line towards -ve x-axis.
6. Enter the length of point 5 as 4 in the command line towards +ve y-axis.
7. Enter the length of point 6 as 2 in the command line towards +ve x-axis.
8. Enter the length of point 7 as 831 in the command line at an angle of <149.036 from +ve x-direction while
   keeping polar tracking on.
9. Enter the length of point 8 as 5.831 in the command line at an angle of <210.964 from +ve x-direction while
   keeping polar tracking on.
10. Enter the length of point 9 as 2 in the command line towards +ve x-axis.
11. Enter the length of point 10 as 5 in the command line towards -ve y-axis.
12. Enter the length of point 11 as 2 in the command line towards +ve x-axis.
13. Click 'Close' on the command line.
14. Select the Circle tool by entering 'CIRCLE' command in the command tab.
15. Specify centre point of circle as 5,4.
16. Specify radius of circle as 2.

RESULT :

• Steps for creating the queen post truss using relative rectangular coordinate system

1. Select the Line tool by entering 'LINE command in the command tab.
2. Specify the starting coordinate of point 1 as 1,1 in the command line.
3. Specify the next coordinate of point 2 as @4,0in the command line.
4. Specify the next coordinate of point 3 as @3.536,3.536 in the command line.
5. Specify the next coordinate of point 4 as @3.536,-3.536 in the command line.
6. Specify the next coordinate of point 5 as @0,-4 in the command line.
7. Press 'Esc' to cancel the LINE command.
8. Select the Line tool again by entering 'LINE' command in the command tab.
9. Join the points 2 and 4.
10. Press 'Esc' to cancel the LINE command.
11. Select the Line tool again by entering 'LINE' command in the command tab.
12. Specify the next coordinate of point 6 as 4.536,5 in the command line.
13. Specify the next coordinate of point 7 as @-2.536,1 in the command line.
14. Specify the next coordinate of point 8 as @0,-1 in the command line.
15. Press 'Esc' to cancel the LINE command.
16. Select the Line tool again by entering 'LINE' command in the command tab.
17. Specify the coordinate of point 6 as 4.536,5 in the command line.
18. Specify the next coordinate of point 9 as @2.536.1 in the command line.
19. Specify the next coordinate of point 10 as @0,-1 in the command line.
20. Press 'Esc' to cancel the LINE command.
21. Select the Line tool again by entering 'LINE' command in the command tab.
22. Join points 3 and 6
23. Press Esc' to cancel the LINE command.

RESULT :

• Steps for creating the mono pitch using Absolute coordinate system

1. Select the Line tool by entering 'LINE' command in the command tab.
2. Specify the starting coordinate of point 1 as 1,1 in the command line.
3. Specify the next coordinate of point 2 as 7,1 in the command line.
4. Specify the next coordinate of point 3 as 7,3 in the command line.
5. Click 'Close' on the command line.
6. Select the Line tool by entering 'LINE' command in the command tab.
7. Specify the next coordinate of point 4 as 3,1 in the command line.
8. Specify the next coordinate of point 5 as 3,1.667 in the command line.
9. Specify the next coordinate of point 6 as 5,1 in the command line.
10. Specify the next coordinate of point 7 as 5,2.333 in the command line.
11. Specify the next coordinate of point 8 as 7,1 in the command line.
12. Press 'Esc' to cancel the LINE command.

RESULT :