Creation of geometries by Coordinate system methods using AutoCad

A) AIM :

• Create the geometries from P1 to P2 using all the coordinates system methods. These are following:

• Types of coordinate system is given below :

  i) Absolute coordinate system

  ii) Relative rectangular system

  iii) Relative polar coordinate system

  iv) Direct distance entry method

• By using the Line tool to create the geometries. Use the circle tool in some cases .

SOFTWARE USED : Autodesk autocad 2021

B) PROCEDURE :

• First, open the AutoCAD software give command the software QNEW or go to the application menu and click the NEW option then click on ADVANCE SETTING.
• Select matric setting : unit in decimal having precision 0.0
• template: Acad.dwg
• Angle : Decimal degree
• Angle measure : East (clockwise direction)
• Select the area 10*10
• Click on finished option.

C) EXAMPLES:

EXAMPLE : 1

PROCEDURE :

i) ABSOLUTE COORDINATE SYSTEM :

(Ensure that the Dynamic input bottom is not choosen)

• Give the line command to the autocad software
• Lines specify first point =2,1 i.e. starting point a
• Specify next point, b=2,7
• Specify next point, c=8,7
• Specify next point, d=8,6
• Specify next point, e=3,6
• Specify next point, f=3,2
• Specify next point, g=8,2
• Specify next point, h=8,1
• then closed. By giving command c > Enter

ii) RELATIVE RECTANGULAR COORDINATES :

• Now, choose line command
• Specify first point, a=2,1 that is starting point
• Specify next point, b=@0,6 i.e dx:0 units dy: 6 units
• Specify next point, c=@6,0 i.e dx: 6 units dy: 0 units
• Specify next point, d=@0,-1 i.e dx:0 units dy:-1 units
• Specify next point, e=@-5,0 i.e dx:-5 units dy:0 units
• Specify next point, f=@ 0,-4 i.e dx :0 units dy : -4 units
• Specify next point, g=@5,0 i.e dx: 5 units dy : 0 units
• Specify next point, h =@0,-1 i.e dx: 0 units dy :-1 units
• Closed. By giving command c > Enter

iii) RELATIVE POLAR COORDINATES :

• line command
• a=2,1 starting point
• b=@6<90
• c=@6<0
• d=@1<270
• e=@5<180
• f=@4<270
• g=@5<0
• h=@1<270
• then closed. C > Enter

iv) DIRECT DISTANCE ENTRY :

• Line command
• 6 cursor facing to north direction
• 6 cursor facing to east direction
• 1 cursor facing to south direction
• 5 cursor facing to west direction
• 4 cursor facing to south direction
• 5 cursor facing to east directon
• 1 cursor facing to south direction
• closed . By giving command c > Enter
• RESULT :

EXAMPLE :2

PROCEDURE :

i) ABSOLUTE COORDINATE SYSTEM :

• Give line command
• Specify first point, a= 2,1 starting point
• Specify next point, b=2,8
• Specify next point, c=7,8
• Specify next point, d=9,1
• Specify next point, e=6,1
• Specify next point, f=6,5
• Specify next point, g=5,5
• Specify next point, h=5,1
• closed. By giving command c > Enter

ii) RELATIVE RECTANGULAR COORDINATE :

• line command
• Specify first point, a=2,1 starting point
• Specify next point, b=@2,7 i.e dx:2 units dy :7 units
• Specify next point, c=@3,0 i.e dx: 3 units dy :0 units
• Specify next point, d=@2,-7 i.e dx:2 units dy:-7 units
• Specify next point, e=@-3,0 i.e dx:-3 units dy:0 units
• Specify next point, f=@0,4 i.e dx:0 units dy:4 units
• Specify next point, g=@-1,0 i.e dx:-1 units dy:0 units
• Specify next point, h=@ 0,-4 i.e dx:0 units dy:-4 units
• Closed. By giving command c > Enter

iii) RELATIVE POLAR COORDINATES :

• Choose Line command
• Put, a=2,1 starting points
• @7<90 (line one )
• @2<0 (line two )
• Then joined the points and get b point
• Delete line one and line two
• c=@3<0
• @7<270 (line three)
• @2<0 (line four)
• Joint the endpoint of line c and line four and get point d
• Delete line three and four
• e=@3<180
• f=@4<90
• g=@1<180
• h=@4<270
• Closed. By giving command c > Enter

iv) DIRECT DISTENCE ENTRY :

• Give the line command
• 7 upward (line a to #)
• 2 right direction (line # to b )
• joint point c and b
• delete line a to # and # to b
• 3 right direction (b to c)
• 7 downward direction (line c to #)
• 2 right directon (line # to d)
• join the point c and d
• delete the line c to # and # to d
• 3 left direction (line d to e)
• 4 upward direction ( line e to f )
• 1 left direction (line f to g)
• 4 downward direction (g to h)
• Then closed . By giving command c > Enter
• RESULTS :

EXAMPLE :3

PROCEDURE :

i) ABSOLUTE COORDINATE SYSTEM :

• Give the line command after that enter first point.
• Specify first point,a= 2,1 starting points
• Specify next point, b=2,8
• Specify next point, c=3,8
• Specify next point, d=5,5
• Specify next point, e=7,8
• Specify next point, f=8,8
• Specify next point, g=8,1
• Specify next point, h=7,1
• Specify next point, i=7,5
• Specify next point, j=5,3
• Specify next point, k=3,5
• Specify next point, l=3,1
• closed. By giving command c > Enter

ii) RELATIVE RECTANGULAR COORDINATE :

• line command
• Specify first point, a=2,1 starting points
• Specify next point, b=0,7 i.e dx:0 units and dy:7 units
• Specify next point, c=1,0 i.e dx:1 units and dy: 0 units
• Specify next point, d=2,-3 i.e dx:2 units and dy:-3 units
• Specify next point, e=2,3 i.e dx:2 units and dy: 3 units
• Specify next point, f=1,0 i.e dx:1 units and dy:0 units
• Specify next point, g=0,-7 i.e dx:0 units and dy:-7 units
• Specify next point, h=-1,0 i.e dx:-1 units and dy:0 units
• Specify next point, i=0,4 i.e dx:0 units and dy:4 units
• Specify next point, j=-2,-2 i,e dx:-2 units and dy :-2 units
• Specify next point, k=-2,2 i.e dx:-2 units and dy :2 units
• Specify next point, l=0,-4 i.e dx:o units and dy :-4 units
• then closed. By giving command c > Enter
• RESULTS :

EXAMPLE :4

PROCEDURE :

i) ABSOLUTE COORDINATE METHOD :

• Line command
• Specify first point,a=2,1 starting points
• Specify next point, b=2,9
• Specify next point, c=9,9
• Specify next point, d=9,1
• Specify next point, e=5,1
• Specify next point, f=5,2
• Specify next point, g=8,2
• Specify next point, h=8,8
• Specify next point, i=3,8
• Specify next point, j=3,1
• then closed. By giving command c > Enter

ii) RELATIVE RECTANGULAR COORDINATE :

• Give line command
• Specify first point, a=2,1 starting points
• Specify next point, b=@0,8 i.e dx:0 units and dy:8 units
• Specify next point, c=@7,0 i.e dx;7 units and dy:0 units
• Specify next point, d=@0,-8 i.e dx:0 units and dy:-8 units
• Specify next point, e=@-4,0 i.e dx:-4 units and dy:0 units
• Specify next point, f =@0,1 i.e dx:0 units and dy:1 units
• Specify next point, g=@4,0 i.e dx: 4 units and dy:0 units
• Specify next point, h =@0,6 i.e dx:0 units and dy:6 units
• Specify next point, i=@-5,0 i.e dx:-5 units and dy:0 units
• Specify next point, j=@0,-7 i.e dx:0 units and dy:-7 units
• then closed . By giving command c > Enter
• RESULTS :

EXAMPLE : 5

PROCEDURE :

i) ABSOLUTE COORDINATE SYSTEM:

• give the line command to autocad
• Specify first point, a=2,1 that is starting point
• Specify next point, b=2,7
• Specify next point, c=10,7
• Specify next point, d=10,1
• closed
• Again, give line command
• Specify first point, e=3,2
• Specify next point, f=3,5
• Specify next point, g=5,5
• Specify next point, h=5,2
• closed
• Now, choose line command
• Specify first point, i=6,2
• Specify next point, j=6,5
• Specify next point, k=8,5
• Specify next point, l=8,2
• closed. By C > Enter

ii) RELATIVE RECTANGULAR COORDINATE :

• Line command
• Specify first point, a=2,1 starting point
• Specify next point, b=0,6
• Specify next point, c=8,0
• Specify next point, d=0,-6
• closed, C > Enter
• Now, give line command
• Specify first point, e=3,2
• Specify next point, f=0,3
• Specify next point, g=2,0
• Specify next point, h=0,-3
• closed, C > Enter
• Again, line command
• Specify first point, i=6,2
• Specify next point, j=0,3
• Specify next point, k=2,0
• Specify next point, l=0,-3
• closed , C > Enter
• RESULTS :

EXAMPLE :6

PROCEDURE:

i) ABSOLUTE COORDINATE SYSTEM:

• Give the line command
• Specify first point, a=0,0
• Specify next point, b=0,2
• Specify next point, c=4,2
• Specify next point, d=4,6
• Specify next point, e=1,6
• Specify next point, f=1,8
• Specify next point, g=9,8
• Specify next point, h=9,6
• Specify next point, i=6,6
• Specify next point, j=6,2
• Specify next point, k=10,2
• Specify next point, l=10,0
• then closed. C > Enter

ii) RELATIVE POLAR COORDINATE METHOD :

• a=0,0 starting points
• b=@2<90
• c=@4<0
• d=@4<90
• e=@3<180
• f=@2<90
• g=@8<0
• h=@2<270
• i=@3<180
• j=@4<270
• k=@4<0
• l=@2<270
• then closed, C > Enter
• RESULTS :

EXAMPLE: 7

PROCEDURE

i) ABSOLUTE COORDINATE SYSTEM :

• Line command
• Specify first point, a=1,1
• Specify next point, b=1,8
• Specify next point, c=5,6
• Specify next point, d=5,4
• Specify next point, e=2,4
• Specify next point, f=2,2
• Specify next point, g=3,2
• Specify next point, h=3,3
• Specify next point, i=6,3
• Specify next point, j=6,1
• then closed, C > Enter
• RESULTS :

EXAMPLE: 8

PROCEDURE:

i) ABSOLUTE COORDINATE SYSTEM :

• Give line command
• Specify first point, a=1,1 starting point
• Specify next point, b=1,8
• Specify next point, c=6,8
• Specify next point, d=6,4
• Specify next point, e=3,4
• Specify next point, f=3,1
• closed. C > Enter
• Specify first point, g=2,5
• Specify next point, h=2,7
• Specify next point, i=5,7
• Specify next point, j=5,5
• closed. C > Enter

RELATIVE POLAR COORDINATE SYSTEM:

• Line command
• Entre value, a=1,1
• b=@7<90
• c=@5<0
• d=@4<270
• e=@3<180
• f=@3<270
• closed. C > Enter
• g=2,5 starting point
• h=2<90
• i=3<0
• j=2<270
• closed. C > Enter
• RESULTS:

Draw the profile and the trusses using any coordinate system methods. The dimensions are there for references.

EXAMPLE : WOOD

PROCEDURE :

ABSOLUTE COORDINATE METHOD:

• Choose line command
• Specify first point, 0,0 starting point
• Specify next point, 0,1
• Specify next point, 2,1
• Specify next point, 2,6
• Specify next point, 0,6
• Specify next point, 5,9
• Specify next point, 10,6
• Specify next point, 8,5
• Specify next point, 8,1
• Specify next point, 10,1
• Specify next point, 10,0
• closed. C > Enter
• RESULTS :

EXAMPLE :QUEEN POST TRUSS

PROCEDURE :

RELATIVE RECTANGULAR COORDINATE SYSTEM :

• Choose line command
• Specify first point, 1,1 starting point
• Specify next point 0,4
• Specify next point 7,0
• Specify next point 0,4
• After that take a centre point of 7 unit line as a first point. Give line command.
• Draw vertical line, 0,3.5
• Then join both left and right corner of 7 unit line to this vertical line.
• Take left corner point as a first point > line command > Specify point 1,1
• Take left corner point as a first point > line command > Specify point -1,1
• Join both @ center of 7,0

RELATIVE POLAR COORDINATE SYSTEM :

• Line command
• 1,1
• @4<90
• @7<0
• @4<270
• enter
• then give the line command
• 1,5 starting point
• @5<45 point f
• enter
• line command
• 8,5
• @5<45
• @3.5<270
• enter
• line command
• 1,5
• @1<0
• @1<90
• joint both point
• and enter
• line commnd
• 8,5
• @1<180
• @1<90
• using line join point
• and press enter
• RESULTS :

EXAMPLE :MONO PITCH

PROCEDURE:

ABSOLUTE COORDINATE SYSTEM :

• Give line command
• Specify first point 1,1
• Specify next point 3,1
• Specify next point 5,1
• Specify next point 7,3
• then closed, C > Enter
• Give the line command
• Specify first point 3,1
• Specify next point 3,1.66
• Specify next point 5,1
• Specify next point 5,2.33
• Specify next point 7,1
• closed, C > Enter
• RESULTS :

IN THIS WAY THIS ALL EXAMPLES ARE SOLVED BY FOUR TYPES OF COORDINATE SYSTEM NAME GIVEN BELOW :

• ABSOLUTE COORDINATE SYSTEM
• RELATIVE RECTANGULAR COORDINATE SYSTEM
• RELATIVE POLAR COORDINATE METHOD
• DIRECT DISTANCE ENTRY METHOD
• BY USING AUTODESK AUTOCAD 2021 VERSION