Creation of geometries by Coordinate system methods using AutoCad
AIM :
Create the geometries from P1 to P2 using all the coordinates system methods. By using the Line tool to create the geometries. use the circle tool in some cases .
SOFTWARE USED :
Autodesk autocad 2021
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 SEETING
select matric seeting
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
EXAMPLE : 1
Types of coordinate system is given below :
absolute coordinate system
relative rectangular system
relative polar coordinate system
direct distence entry method
ABSOLUTE COORDINATE SYSTEM :
give the line command to the autocad software
2,1 starting point a
b=2,7
c=8,7
d=8,6
e=3,6
f=3,2
g=8,2
h=8,1
then closed.
RELATIVE RECTANGULAR COORDINATES :
line command
a=@2,1 that is starting point
b=@0,6 i.e dx:0 units dy: 6 units
c=@6,0 i.e dx: 6 units dy: 0 units
d=@0,-1 i.e dx:0 units dy:-1 units
e=@-5,0 i.e dx:-5 units dy:0 units
f=@ 0,-4 i.e dx :0 units dy : -4 units
g=@5,0 i.e dx: 5 units dy : 0 units
h =@0,-1 i.e dx: 0 units dy :-1 units
closed .
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
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 .
RESULT :
EXAMPLE :2
PROCEDURE :
ABSOLUTE COORDINATE SYSTEM :
give line command
a= 2,1 starting point
b=2,8
c=7,8
d=9,1
e=6,1
f=6,5
g=5,5
h=5,1
closed.
RELATIVE RECTANGULAR COORDINATE :
line command
a=2,1 starting point
b=@2,7 i.e dx:2 units dy :7 units
c=@3,0 i.e dx: 3 units dy :0 units
d=@2,-7 i.e dx:2 units dy:-7 units
e=@-3,0 i.e dx:-3 units dy:0 units
f=@0,4 i.e dx:0 units dy:4 units
g=@-1,0 i.e dx:-1 units dy:0 units
h=@ 0,-4 i.e dx:0 units dy:-4 units
closed
RELATIVE POLAR COORDINATES :
line command
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.
DIRECT DISTENCE ENTRY :
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 .
RESULTS :
EXAMPLE :3
PROCEDURE :
ABSOLUTE COORDINATE SYSTEM :
a= 2,1 starting points
b=2,8
c=3,8
d=5,5
e=7,8
f=8,8
g=8,1
h=7,1
i=7,5
j=5,3
k=3,5
l=3,1
closed
RELATIVE RECTANGULAR COORDINATE :
line command
a=2,1 statting points
b=0,7 i.e dx:0 units and dy:7 units
c=1,0 i.e dx:1 units and dy: 0 units
d=2,-3 i.e dx:2 units and dy:-3 units
e=2,3 i.e dx:2 units and dy: 3 units
f=1,0 i.e dx:1 units and dy:0 units
g=0,-7 i.e dx:0 units and dy:-7 units
h=-1,0 i.e dx:-1 units and dy:0 units
i=0,4 i.e dx:0 units and dy:4 units
j=-2,-2 i,e dx:-2 units and dy :-2 units
k=-2,2 i.e dx:-2 units and dy :2 units
l=0,-4 i.e dx:o units and dy :-4 units
then closed.
RESULTS :
EXAMPLE :4
PROCEDURE :
ABSOLUTE COORDINATE METHOD :
Line command
a=2,1 starting points
b=2,9
c=9,9
d=9,1
e=5,1
f=5,2
g=8,2
h=8,8
i=3,8
j=3,1
then closed
RELATIVE RECTANGULAR COORDINATE :
give line command
a=2,1 starting points
b=@0,8 i.e dx:0 units and dy:8 units
c=@7,0 i.e dx;7 units and dy:0 units
d=@0,-8 i.e dx:0 units and dy:-8 units
e=@-4,0 i.e dx:-4 units and dy:0 units
f =@0,1 i.e dx:0 units and dy:1 units
g=@4,0 i.e dx: 4 units and dy:0 units
h =@0,6 i.e dx:0 units and dy:6 units
i=@-5,0 i.e dx:-5 units and dy:0 units
j=@0,-7 i.e dx:0 units and dy:-7 units
then closed .
RESULTS :
EXAMPLE : 5
PROCEDURE :
ABSOLUTE COORDINATE SYSTEM:
give the line command to autocad
a=2,1 that is starting point
b=2,7
c=10,7
d=10,1
closed
line command
e=3,2
f=3,5
g=5,5
h=5,2
closed
line command
i=6,2
j=6,5
k=8,5
l=8,2
closed
RELATIVE RECTANGULAR COORDINATE :
Line command
a=2,1 starting point
b=0,6
c=8,0
d=0,-6
closed
line command
e=3,2
f=0,3
g=2,0
h=0,-3
closed
line command
i=6,2
j=0,3
k=2,0
l=0,-3
closed
RESULTS :
EXAMPLE :6
PROCEDURE:
ABSOLUTE COORDINATE SYSTEM:
give the line command
a=0,0
b=0,2
c=4,2
d=4,6
e=1,6
f=1,8
g=9,8
h=9,6
i=6,6
j=6,2
k=10,2
l=10,0
then closed.
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
RESULTS :
EXAMPLE: 7
PROCEDURE
ABSOLUTE COORDINATE SYSTEM :
Line command
a=1,1
b=1,8
c=5,6
d=5,4
e=2,4
f=2,2
g=3,2
h=3,3
i=6,3
j=6,1
then closed
RESULTS :
EXAMPLE: 8
PROCEDURE:
ABSOLUTE COORDINATE SYSTEM :
line command
a=1,1 starting point
b=1,8
c=6,8
d=6,4
e=3,4
f=3,1
closed
g=2,5
h=2,7
i=5,7
j=5,5
closed
RELATIVE POLAR COORDINATE SYSTEM:
Line command
a=1,1
b=@7<90
c=@5<0
d=@4<270
e=@3<180
f=@3<270
closed
g=2,5 starting point
- h=2<90
i=3<0
j=2<270
closed
RESULTS:
Draw the profile and the trusses using any coordinate system methods. The dimensions are there for references.
EXAMPLE : WOOD
PROCEDURE :
ABSOLUTE COORDINATE METHOD:
line command
0,0 starting point
0,1
2,1
2,6
0,6
5,9
10,6
8,5
8,1
10,1
10,0
closed
RESULTS :
EXAMPLE :QUEEN POST TRUSS
PROCEDURE :
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 prase enter
RESULTS :
EXAMPLE :MONO PITCH
PROCEDURE:
ABSOLUTE COORDINATE SYSTEM :
line command
1,1
3,1
5,1
7,3
then closed
give the line command
3,1
3,1.66
5,1
5,2.33
7,1
closed
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