Creation of geometries by Coordinate system methods using AutoCad

Aim:

(A) Create the geometries from P1 to P2 using all the coordinates system methods and also using line tool to find the missing dimension.

(B) Civil related problems- Draw the profile and the trusses using any coordinate system methods using given dimensions as reference.

Introduction:

There is only 3 AutoCAD coordinates system you should know. Absolute coordinates, Relative coordinates and Polar coordinates.

Absolute Coordinates
All input points specify in your drawing using standard Cartesian coordinates x and y. Using absolute coordinate, points entered by typing x,y [Enter]

Relative Coordinates
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]

Polar Coordinates
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

Commands used:

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

 Procedure:

(a) Absolute coordinate system:

• Click on AutoCad application and open this application.
• Type QNEW in the command bar and enter
• Select default setting as Imperial (feet and inches)
• In default setting click on use wizard and in that advance setting set unit as decimal and precision as 0 and press next
• Set Angle as Decimal degree and precision 0 and press next
• Set Angle measure as EAST and press Next
• Set Angle direction as Counter-clockwise and press Next
• Set Area by providing Length as 10 and width 10
• Press finish.
• From Home tab click on Line
• Specify first point in command bar (2,1)
• Specify next point as (8,1)
• Specify next point (8,2)
• Specify next point (3,2)
• Specify next point (3,6)
• Specify next point (8,6)
• Specify next point (8,7)
• Specify next point (2,7)
• Click on close in command bar
• The Geometry is done.

(b) Relative Rectangular Coordinate:

• Click on AutoCad application and open this application.
• Type QNEW in the command bar and enter
• Select default setting as Imperial (feet and inches)
• In default setting click on use wizard and in that advance setting set unit as decimal and precision as 0 and press next
• Set Angle as Decimal degree and precision 0 and press next
• Set Angle measure as EAST and press Next
• Set Angle direction as Counter-clockwise and press Next
• Set Area by providing Length as 10 and width 10
• Press finish.
• From Home tab click on Line
• Specify first point in command bar (2,1)
• Specify next point @6,0
• Specify next point @0,1
• Specify next point @-5,0
• Specify next point @0,4
• Specify next point @5,0
• Specify next point @0,1
• Specify next point @-6,0
• Click on close in command bar
• The Geometry is done.

(c) Relative Polar Coordinate:

• Click on AutoCad application and open this application.
• Type QNEW in the command bar and enter
• Select default setting as Imperial (feet and inches)
• In default setting click on use wizard and in that advance setting set unit as decimal and precision as 0 and press next
• Set Angle as Decimal degree and precision 0 and press next
• Set Angle measure as EAST and press Next
• Set Angle direction as Counter-clockwise and press Next
• Set Area by providing Length as 10 and width 10
• Press finish.
• From Home tab click on Line
• Specify first point in command bar (2,1)
• Specify next point @6<0 (Towards East)
• Specify next point @1<90 (Towards North)
• Specify next point @5<180 (Towards West)
• Specify next point @4<90 (Towards North)
• Specify next point @5<0 (Towards East)
• Specify next point @1<90 (Towards North)
• Specify next point @6<180 (Towards West)
• Click on close in command bar
• The geometry is done

(d) Direct Distance entry:

• Click on AutoCad application and open this application.
• Type QNEW in the command bar and enter
• Select default setting as Imperial (feet and inches)
• In default setting click on use wizard and in that advance setting set unit as decimal and precision as 0 and press next
• Set Angle as Decimal degree and precision 0 and press next
• Set Angle measure as EAST and press Next
• Set Angle direction as Counter-clockwise and press Next
• Set Area by providing Length as 10 and width 10
• Press finish.
• From Home tab click on Line
• Specify first point in command bar (2,1)
• Specify next point as 6 (Keep cueser towars East)
• Specify next point as 1 (Keep curser towars North)
• Specify next point as 5 (Keep curser towards West)
• Specify next point as 4 (Keep curser towards North)
• Specify next point as 5 (Keep curser towards East)
• Specify next point as 1 (Keep curser towards North)
• Specify next point as 6 (Keep curser towards West)
• Click on close in command bar
• The geometry is done

(a) Absolute coordinate system:

• Click on AutoCad application and open this application.
• Type QNEW in the command bar and enter
• Select default setting as Imperial (feet and inches)
• In default setting click on use wizard and in that advance setting set unit as decimal and precision as 0 and press next
• Set Angle as Decimal degree and precision 0 and press next
• Set Angle measure as EAST and press Next
• Set Angle direction as Counter-clockwise and press Next
• Set Area by providing Length as 10 and width 10
• Press finish.
• From Home tab click on Line
• Specify first point in command bar (2,1)
• Specify next pont (5,1)
• Specify next point (5,5)
• Specify next point (6,5)
• Specify next point (6,1)
• Specify next point (9,1)
• Specify next point (7,8)
• Specify next point (4,8)
• Click on close in command bar
• The geometry is done

(b) Relative Rectangular Coordinate:

• Click on AutoCad application and open this application.
• Type QNEW in the command bar and enter
• Select default setting as Imperial (feet and inches)
• In default setting click on use wizard and in that advance setting set unit as decimal and precision as 0 and press next
• Set Angle as Decimal degree and precision 0 and press next
• Set Angle measure as EAST and press Next
• Set Angle direction as Counter-clockwise and press Next
• Set Area by providing Length as 10 and width 10
• Press finish.
• From Home tab click on Line
• Specify first point in command bar (2,1)
• Specify next point @3,0
• Specify next point @0,4
• Specify next point @1,0
• Specify next point @0,-4
• Specify next point @3,0
• Specify next point @-2,7
• Specify next point @-3,0
• Click on close in command line

(c) Relative Polar Coordinate system:

• Click on AutoCad application and open this application.
• Type QNEW in the command bar and enter
• Select default setting as Imperial (feet and inches)
• In default setting click on use wizard and in that advance setting set unit as decimal and precision as 0 and press next
• Set Angle as Decimal degree and precision 0 and press next
• Set Angle measure as EAST and press Next
• Set Angle direction as Counter-clockwise and press Next
• Set Area by providing Length as 10 and width 10
• Press finish.
• From Home tab click on LINE
• Specify first point (2,1)
• Specify next point @3<0
• Specify next point @4<90
• Specify next point @1<0
• Specify next point @4<270
• Specify next point @3<0
• Specify next point @7<106
• Specify next point @3<180
• Click on close in command line

(d) Direct distance entry method:

• Click on AutoCad application and open this application.
• Type QNEW in the command bar and enter
• Select default setting as Imperial (feet and inches)
• In default setting click on use wizard and in that advance setting set unit as decimal and precision as 0 and press next
• Set Angle as Decimal degree and precision 0 and press next
• Set Angle measure as EAST and press Next
• Set Angle direction as Counter-clockwise and press Next
• Set Area by providing Length as 10 and width 10
• Press finish.
• From Home tab click on LINE
• Specify first point (2,1)
• Enter the length of next point as 3 towars +ve x axis
• Specify next point length as 4 Towards north
• Soecify next point length as 1 towars east
• Specify next point length as 4 towards south
• Specify next point length as 3 towards east
• Specify next point length as 7 towards east
• Specify next point length as 3 towards west
• Click on close in command line

Using Absolute coordinate system:

• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (2,1)
• Specify next point (3,1)
• Specify next point (3,5)
• Specify next point (5,3)
• Specify next point (7,5)
• Specify next point (7,1)
• Specify next point (3,1)
• Specify next point (8,8)
• Specify next point (7,8)
• Specify next point (5,5)
• Specify next point (3,8)
• Specify next point (2,8)
• Click on CLOSE in command line

Using Relative Rectangular Coordinate System:

• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (2,1)
• Specify next point @1,0
• Specify next point @0,7
• Specify next point @5,0
• Specify next point @0,-6
• Specify next point @-3,0
• Specify next point @0,-1
• Specify next point @4,0
• Specify next point @0,8
• Specify next point @-7,0
• Click on CLOSE in command line

Using Absolute Coordinate System:

• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (2,1)
• Specify next point (10,1)
• Specify next point (10,7)
• Specify next point (2,7)
• Click on CLOSE in command line
• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (3,2)
• Specify next point (5,2)
• Specify next point (5,5)
• Specify next point (3,5)
• Click on CLOSE in command line
• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (6,2)
• Specify next point (8,2)
• Specify next point (8,5)
• Specify next point (6,5)
• Click on CLOSE in command line

Using Relative Rectangular Coordinate System

• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (0,0)
• Specify next point @10,0
• Specify next point @0,2
• Specify next point @-4,0
• Specify next point @0,4
• Specify next point @3,0
• Specify next point @0,2
• Specify next point @-8,0
• Specify next point @0,-2
• Specify next point @3,0
• Specify next point @0,-4
• Specify next point @-4,0
• Click on CLOSE in command bar

Using Absolute Coordinate System:

• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (1,1)
• Specify next point (6,1)
• Specify next point (6,3)
• Specify next point (3,3)
• Specify next point (3,2)
• Specify next point (2,2)
• Specify next point (2,4)
• Specify next point (3,4)
• Specify next point (5,6)
• Specify next point (1,8)
• Click on CLOSE in command line

Using Relative Polar Coordinate System:

• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (1,1)
• Specify next point @2<0
• Specify next point @3<90
• Specify next point @5<180
• Specify next point @4<90
• Specify next point @5<180
• Click on CLOSE in command line
• Select LINE tool from ribbon or type Line command in command bar
• Specify point (2,5)
• Specify next point @3,0
• Specify next point @2<90
• Specify next point @3<180
• Click on CLOSE in command line

Using Direct Distance method:

• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (0,0)
• Specify next point length as 10 towards east
• Specify next point length as 1 towards north
• Specify next point length as 2 towards west
• Specify next point length as 4 towards north
• Specify next point length as 2 towwards east
• Specify next point length as 831 at an angle <149.036 from+ve x- direction while keeping polar tracking on
• Specify next point length as 5.831 at an angle <210.964 from ve x- direction
• Specify next point length as 2 towards east
• Specify next point length as 5 towards south
• Specify next point length as 2 towards east
• Click CLOSE in command line
• Select the circle tool by entering CIRCLE command in command bar
• Specify centre point (5,4)
• Specify radius of circle as 2

Using Relative Rectangular Coordinate System:

• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (1,1)
• Specify next point @1,0
• Specify next point @0,4 and lets consider as point 1
• Specify next point @3.536,3.536 and lets consider as point 2
• Specify next point @3.536,-3.536 and consider it as point 3
• Specify next point @0,-4
• Press Esc to cancel the LINE command
• Select Line tool again from ribbon
• Join point 1 and 3
• Press Esc to cancel the LINE command
• Select Line tool again from ribbon
• Specify point as (4.536,5) and lets consider it as point 4
• Specify Point @-2.536,1
• Specify next point @0,-1
• Press Esc to cancel the LINE command
• Select Line tool again from ribbon
• Specify point 4.536,5
• Specify next point @2.536,1
• Specify next point @0,-1
• Press Esc to cancel the LINE command
• Select Line tool again from ribbon
• Join point 2 and 4.
• Press Esc to cancel the LINE command

Using Absolute coordinate system:

• Select LINE tool from ribbon or type Line command in command bar
• Specify first point (1,1)
• Specify next point (7,1)
• Specify next point (7,3)
• Click on CLOSE in command line
• Select LINE tool from ribbon or type Line command in command bar
• Specify point (3,1)
• Specify next point (3,1.667)
• Specify next point (5,1)
• Specify next point (5,2.33)
• Specify next point (7,1)
• Press Esc to cancel the LINE command