Creation of geometries by Coordinate system methods using AutoCad
Aim :-
- To Create the given geometries and trusses in Autocad, using all the coordinates system methods and using the Line tool and circle tool.
- Geometries P1 and P2 drawn using all coordinate system, and each of the reamining geometries are drawn using any one of the coordinate systems or the direct distanance method.
Introduction :-
Coordinate System :-
Coordinate System is a system where numbers are used to determine the unique position of points and/or other geometric elements.
Absolute Coordinate system:
- Absolute Coordinates uses the Cartesian System to specify a position in the X, Y, and (if needed) Z axes to locate a point from the 0-X, 0-Y, and 0-Z (0,0,0) point.
- To locate a point using the Absolute Coordinate system, type the X-value, Y-value, and, if needed, the Z-value separated by commas (with no spaces).
- Enter LINE command: L [Enter]
Start line at point A: 0,0 [Enter]
End first line at point B: 2,2 [Enter]
End of second line at point C: 2,3 [Enter]
Relative Rectangular Coordinate system:
- After first points entered, your next points can be entered by specifying the next coordinate compare/relative from the first points.
- The relative coordinate started with symbol “@” tell AutoCAD it was a relative coordinates. Using relative coordinate, points entered by typing @x,y [Enter].
- Enter LINE command: L [Enter]
Start line at point A: 0,0 [Enter]
End first line at point B: @2,2 [Enter]
End of second line at point C: @0,1 [Enter]
Relative Polar coordinate system:
- Polar coordinates used when you need to draw the next points at specify angle. Polar coordinates system in AutoCAD specifies distance length at which angle. Using polar coordinate, points entered by typing @distance
- Enter LINE command: L [Enter]
- Start line at point A: 0,0 [Enter]
- End first line at point B: @2.828<45 [Enter]
- End of second line at point C: @1<90 [Enter]
Direct Entry Method System:
- This is the most common and easiest system used for drafting in Autocad. Values are provided through keyboard and direction is guided through the mouse.
- Enter LINE(L) command: L [Enter]
- Start line : 10,10 [Enter]
- and place the cross hair(Mouse) at which direction you want then enter the length of that directional line then press enter
Procedure :-
- Go to START MENU, select AUTOCAD 2022.
- Click on START drawing.
- Type : STARTUP [Enter]
- Enter vaue of STARTUP : 1
- Go to Application menu and select NEW.
- In the 'Create new drawing' dialog box, we select the 'Imperial System' in the 'Start the Scratch' option.
- Next we select the 'Decimal' uniy system from 'Advanced Stuo Option'.
- Set the limits by entering the limit in command tab.
- The lower left corner is specified as 0,0, and upper most corner is specified as 100,100.
Drafting the Geometry P1 :-
A. Using Absolute Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Specify the starting coordinate of point 2 as 8,1 in command line.
- Specify the starting coordinate of point 3 as 8,2 in command line.
- Specify the starting coordinate of point 4 as 3,2 in command line.
- Specify the starting coordinate of point 5 as 3,6 in command line.
- Specify the starting coordinate of point 6 as 8,6 in command line.
- Specify the starting coordinate of point 7 as 8,7 in command line.
- Specify the starting coordinate of point 8 as 2,7 in command line
- Click CLOSE On the Command line.
Result :-
B. Using Relative Rectangular Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Specify the starting coordinate of point 2 as @6,0 in command line.
- Specify the starting coordinate of point 3 as @0,1 in command line.
- Specify the starting coordinate of point 4 as @-5,0 in command line.
- Specify the starting coordinate of point 5 as @0,4 in command line.
- Specify the starting coordinate of point 6 as @5,0 in command line.
- Specify the starting coordinate of point 7 as @0,1 in command line.
- Specify the starting coordinate of point 8 as @-6,0 in command line
- Click CLOSE On the Command line.
Result :-
C. Using Relative Polar coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Specify the starting coordinate of point 2 as @6<0 in command line.
- Specify the starting coordinate of point 3 as @1<90 in command line.
- Specify the starting coordinate of point 4 as @5<180 in command line.
- Specify the starting coordinate of point 5 as @4<90 in command line.
- Specify the starting coordinate of point 6 as @5<0 in command line.
- Specify the starting coordinate of point 7 as @1<90 in command line.
- Specify the starting coordinate of point 8 as @6<180 in command line
- Click CLOSE On the Command line.
Result :-
Using Direct Entry Method System:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Enter the length of point 2 as 6 in command line towards +ve X-axis.
- Enter the length of point 3 as 1 in command line towards +ve Y-axis.
- Enter the length of point 4 as 5 in command line towards -ve X-axis.
- Enter the length of point 5 as 4 in command line towards +ve Y-axis.
- Enter the length of point 6 as 5 in command line towards +ve X-axis.
- Enter the length of point 7 as 1 in command line towards +ve Y-axis.
- Enter the length of point 8 as 6 in command line towards -ve X-axis.
- Click CLOSE On the Command line.
Result :-
Drafting the Geometry P2 :-
A. Using Absolute Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Specify the starting coordinate of point 2 as 5,1 in command line.
- Specify the starting coordinate of point 3 as 5,5 in command line.
- Specify the starting coordinate of point 4 as 6,5 in command line.
- Specify the starting coordinate of point 5 as 6,1 in command line.
- Specify the starting coordinate of point 6 as 9,1 in command line.
- Specify the starting coordinate of point 7 as 7,8 in command line.
- Specify the starting coordinate of point 8 as 4,8 in command line
- Click CLOSE On the Command line.
Result :-
B. Using Relative Rectangular Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Specify the starting coordinate of point 2 as @3,0 in command line.
- Specify the starting coordinate of point 3 as @0,4 in command line.
- Specify the starting coordinate of point 4 as @1,0 in command line.
- Specify the starting coordinate of point 5 as @0,-4 in command line.
- Specify the starting coordinate of point 6 as @3,0 in command line.
- Specify the starting coordinate of point 7 as @-2,7 in command line.
- Specify the starting coordinate of point 8 as @-3,0 in command line
- Click CLOSE On the Command line.
Result :-
C. Using Relative Polar coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Specify the starting coordinate of point 2 as @3<0 in command line.
- Specify the starting coordinate of point 3 as @4<90 in command line.
- Specify the starting coordinate of point 4 as @1<0 in command line.
- Specify the starting coordinate of point 5 as @4<270 in command line.
- Specify the starting coordinate of point 6 as @3<0 in command line.
- Specify the starting coordinate of point 7 as @7<106 in command line.
- Specify the starting coordinate of point 8 as @3<180 in command line
- Click CLOSE On the Command line.
Result :-
D. Using Direct Entry Method System:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Enter the length of point 2 as 3 in command line towards +ve X-axis.
- Enter the length of point 3 as 4 in command line towards +ve Y-axis.
- Enter the length of point 4 as 1 in command line towards +ve X-axis.
- Enter the length of point 5 as 4 in command line towards -ve Y-axis.
- Enter the length of point 6 as 3 in command line towards +ve X-axis.
- Enter the length of point 7 as 7 in command line towards +ve X-axis.
- Enter the length of point 8 as 3 in command line towards -ve X-axis.
- Click CLOSE On the Command line.
Result :-
Drafting the Geometry P4 :-
A. Using Absolute Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Specify the starting coordinate of point 2 as 3,1 in command line.
- Specify the starting coordinate of point 3 as 3,5 in command line.
- Specify the starting coordinate of point 4 as 5,3 in command line.
- Specify the starting coordinate of point 5 as 7,5 in command line.
- Specify the starting coordinate of point 6 as 7,1 in command line.
- Specify the starting coordinate of point 7 as 8,1 in command line.
- Specify the starting coordinate of point 8 as 8,8 in command line.
- Specify the starting coordinate of point 9 as 7,8 in command line
- Specify the starting coordinate of point 10 as 5,5 in command line
- Specify the starting coordinate of point 11 as 3,8 in command line
- Specify the starting coordinate of point 12 as 2,8 in command line
- Click CLOSE On the Command line.
Result :-
Drafting the Geometry P5 :-
A. Using Relative Rectangular Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Specify the starting coordinate of point 2 as @1,0 in command line.
- Specify the starting coordinate of point 3 as @0,7 in command line.
- Specify the starting coordinate of point 4 as @5,0 in command line.
- Specify the starting coordinate of point 5 as @0,-6 in command line.
- Specify the starting coordinate of point 6 as @-3,0 in command line.
- Specify the starting coordinate of point 7 as @0, -1n command line.
- Specify the starting coordinate of point 8 as @4,0 in command line.
- Specify the starting coordinate of point 9 as @0,8 in command line
- Specify the starting coordinate of point 10 as @-7,0 in command line
- Click CLOSE On the Command line.
Result :-
Drafting the Geometry P7 :-
A. Using Absolute Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 2,1 in command line.
- Specify the starting coordinate of point 2 as 10,1 in command line.
- Specify the starting coordinate of point 3 as 10,7 in command line.
- Specify the starting coordinate of point 4 as 2,7 in command line.
- Click CLOSE On the Command line.
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 5 as 3,2 in command line.
- Specify the starting coordinate of point 6 as 5,2 in command line.
- Specify the starting coordinate of point 7 as 5,5 in command line.
- Specify the starting coordinate of point 8 as 3,5 in command line.
- Click CLOSE On the Command line.
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 9 as 6,2 in command line.
- Specify the starting coordinate of point 10 as 8,2 in command line.
- Specify the starting coordinate of point 11 as 8,5 in command line.
- Specify the starting coordinate of point 12 as 6,5 in command line.
- Click CLOSE On the Command line.
Result :-
Drafting the Geometry P8 :-
A. Using Relative Rectangular Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 0,0 in command line.
- Specify the starting coordinate of point 2 as @10,0 in command line.
- Specify the starting coordinate of point 3 as @0,2 in command line.
- Specify the starting coordinate of point 4 as @-4,0 in command line.
- Specify the starting coordinate of point 5 as @0,4 in command line.
- Specify the starting coordinate of point 6 as @3,0 in command line.
- Specify the starting coordinate of point 7 as @0,2 in command line.
- Specify the starting coordinate of point 8 as @-8,0 in command line.
- Specify the starting coordinate of point 9 as @0,-2 in command line.
- Specify the starting coordinate of point 10 as @3,0 in command line.
- Specify the starting coordinate of point 11 as @0,-4 in command line.
- Specify the starting coordinate of point 12 as @-4,0 in command line.
- Click CLOSE On the Command line.
Result :-
Drafting the Geometry P9:-
A. Using Relative Rectangular Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 1,1 in command line.
- Specify the starting coordinate of point 2 as 6,1 in command line.
- Specify the starting coordinate of point 3 as 6,3 in command line.
- Specify the starting coordinate of point 4 as 3,3 in command line.
- Specify the starting coordinate of point 5 as 3,2 in command line.
- Specify the starting coordinate of point 6 as 2,2 in command line.
- Specify the starting coordinate of point 7 as 2,4 in command line.
- Specify the starting coordinate of point 8 as 5,4 in command line.
- Specify the starting coordinate of point 9 as 5,6 in command line
- Specify the starting coordinate of point 10 as 1,8 in command line
- Click CLOSE On the Command line.
Result :-
Drafting the Geometry P10 :-
A. Using Relative Polar Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 1,1 in command line.
- Specify the starting coordinate of point 2 as @2<0 in command line.
- Specify the starting coordinate of point 3 as @3<90 in command line.
- Specify the starting coordinate of point 4 as @3<0 in command line.
- Specify the starting coordinate of point 5 as @4<90 in command line.
- Specify the starting coordinate of point 6 as @5<180 in command line.
- Click CLOSE On the Command line.
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 7 as 5,2 in command line.
- Specify the starting coordinate of point 8 as @3<0 in command line
- Specify the starting coordinate of point 8 as @2<90 in command line.
- Specify the starting coordinate of point 9 as @3<180 in command line
- Click CLOSE On the Command line.
Result :-
Drafting Wood Profile as shown in Image :-
Using Direct Entry Method System:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 0,0 in command line.
- Enter the length of point 2 as 10 in command line towards +ve X-axis.
- Enter the length of point 3 as 1 in command line towards +ve Y-axis.
- Enter the length of point 4 as 2 in command line towards -ve X-axis.
- Enter the length of point 5 as 4 in command line towards +ve Y-axis.
- Enter the length of point 6 as 2 in command line towards +ve X-axis.
- Enter the length of point 7 as 5.831 in command line at an angel of <149.036 from +ve X-axis while keeping the polar on.
- Enter the length of point 8 as 5.831 in command line at an angel of <210.964 from +ve X-axis while keeping the polar on.
- Enter the length of point 9 as 2 in command line towards -ve X-axis.
- Enter the length of point 10 as 5 in command line towards -ve X-axis.
- Enter the length of point 11 as 2 in command line towards -ve X-axis.
- Click CLOSE On the Command line.
- Select the tool Circle by entering 'CIRCLE' command in command tab.
- specify center point of circle as 5,4.
- Specify radius of circle as 2.
Result :-
Drafting Queen post Truss as given in the Image.
A. Relative Rectangular Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 1,1 in command line.
- Specify the starting coordinate of point 2 as @4,0 in command line.
- Specify the starting coordinate of point 3 as @3.536,3.536 in command line.
- Specify the starting coordinate of point 4 as @3.536,3.536 in command line.
- Specify the starting coordinate of point 5 as @0,-4 in command line.
- Press ESCAPE On the Command line.
- Select the line tool by entering LINE Command in tab.
- Join the points 2 and 4.
- Press ESCAPE On the Command line.
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 6 as @4.536,5 in command line.
- Specify the starting coordinate of point 7 as @-2.536,1 in command line.
- Specify the starting coordinate of point 8 as @0,-1 in command line.
- Press ESCAPE On the Command line.
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 9 as @2.536,1 in command line.
- Specify the starting coordinate of point 10 as @0-1 in command line.
- Press ESCAPE On the Command line.
- Select the line tool by entering LINE Command in tab.
- Join the points 3 and 6.
- Press ESCAPE On the Command line.
Result :-
Drafting Queen Mono Pitch as shown in the Image :-
A. Using Relative Rectangular Coordinate system:
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 1 as 1,1 in command line.
- Specify the starting coordinate of point 2 as 7,1 in command line.
- Specify the starting coordinate of point 3 as 7,3 in command line.
- Click CLOSE On the Command line.
- Select the line tool by entering LINE Command in tab.
- Specify the starting coordinate of point 4 as 3,1 in command line.
- Specify the starting coordinate of point 5 as 3,1.667 in command line.
- Specify the starting coordinate of point 6 as 5,1 in command line.
- Specify the starting coordinate of point 7 as 5,2.333 in command line.
- Specify the starting coordinate of point 8 as 7,1 in command line.
- Press ESCAPE On the Command line.
Result :-
