Challenge

Creation of geometries by Coordinate system methods using AutoCad

MMohammed Ansaruddin Mufeez5 Aug 2022

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.

Note: Use the Imperial Template and the Decimal Units to draft the features. Dimensions are there for references.

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

Answer:

AIM:

To create the given geometries and trusses in AutoCAD, using the different coordinate system methods and the line and circle drawing tools.

Geometries P-1 and P-2 drawn using all coordinate systems, and each of the remaining geometries are drawn using any one of the coordinate systems or the direct distance entry method.

INTRODUCTION:

Coordinate Systems:

Coordinate system is a system where numbers are used to determine the unique position of points and/or other geometric elements.

The various coordinate systems are:

Absolute Coordinate System:

In this system all points are established at some distance in the x & y-axis (sometimes z-axis) from a common origin (usually 0,0).

Relative Coordinate System:

The location of a Relative coordinate is defined by its distance from a reference point. In AutoCAD, when using this system, the first point of the drawing/geometry is always absolute, i.e., it is established with respect to origin (0,0) and then all the successive positions are established with respect to their preceding point.

Direct distance entry method:

It is another popular method used for drawing different shapes/geometries in AutoCAD. Direct distance entry method enables the user to draw an object by simply pointing the cursor in the desired direction and entering the required distance in the command line.

PROCEDURE:

Starting AutoCAD software:

Go to START MENU, select AutoCAD 2023.
Click on START DRAWING
In the Command line type in: STARTUP [ENTER]
Enter new value 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 from Scratch’ option.
Next, we select the ‘Decimal’ unit system from the ‘Advanced Setup’ option.
Set the limits by entering LIMITS in the Command tab. The lower-left corner is specified as 0, 0; and the upper-right corner is specified as 100,100.

♦ Drafting the geometry given in P1

Using absolute coordinate system:

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

RESULT:

Using Relative Rectangular coordinate system

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

RESULT:

Using Relative Polar coordinate system

Select the Line tool by entering ‘LINE’ command in the command tab.
Specify the starting coordinate of point 1 as 2,1 in the command line.
Specify the next coordinate of point 2 as @6<0 in the command line.
Specify the next coordinate of point 3 as @1<90 in the command line.
Specify the next coordinate of point 4 as @5<180 in the command line.
Specify the next coordinate of point 5 as @4<90 in the command line.
Specify the next coordinate of point 6 as @5<0 in the command line.
Specify the next coordinate of point 7 as @1<90 in the command line.
Specify the next coordinate of point 8 as @6<180 in the command line.
Click ‘Close’ on the command line.

RESULT:

Using Direct Distance Entry method

Select the Line tool by entering ‘LINE’ command in the command tab.
Specify the starting coordinate of point 1 as 2,1 in the command line.
Enter the length of point 2 as 6 in the command line towards +ve x-axis.
Enter the length of point 3 as 1 in the command line towards +ve y-axis.
Enter the length of point 4 as 5 in the command line towards -ve x-axis.
Enter the length of point 5 as 4 in the command line towards +ve y-axis.
Enter the length of point 6 as 5 in the command line towards +ve x-axis.
Enter the length of point 7 as 1 in the command line towards +ve y-axis.
Enter the length of point 8 as 6 in the command line towards -ve x-axis.
Click ‘Close’ on the command line.

RESULT:

♦ Drafting the geometry given in P2

Using Absolute coordinate system

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

RESULTS:

Using Relative Rectangular coordinate system

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

RESULT:

Using Relative Polar coordinate system

Select the Line tool by entering ‘LINE’ command in the command tab.
Specify the starting coordinate of point 1 as 2,1 in the command line.
Specify the next coordinate of point 2 as @3<0 in the command line.
Specify the next coordinate of point 3 as @4<90 in the command line.
Specify the next coordinate of point 4 as @1<0 in the command line.
Specify the next coordinate of point 5 as @4<270 in the command line.
Specify the next coordinate of point 6 as @3<0 in the command line.
Specify the next coordinate of point 7 as @7<106 in the command line.
Specify the next coordinate of point 8 as @3<180 in the command line.
Click ‘Close’ on the command line.

RESULT:

Using Direct Distance Entry method

Select the Line tool by entering ‘LINE’ command in the command tab.
Specify the starting coordinate of point 1 as 2,1 in the command line.
Enter the length of point 2 as 3 in the command line towards +ve x-axis.
Enter the length of point 3 as 4 in the command line towards +ve y-axis.
Enter the length of point 4 as 1 in the command line towards +ve x-axis.
Enter the length of point 5 as 4 in the command line towards -ve y-axis.
Enter the length of point 6 as 3 in the command line towards +ve x-axis.
Enter the length of point 7 as 7 in the command line at an angle of <106 from +ve x-direction while keeping polar tracking on.
Enter the length of point 8 as 3 in the command line towards -ve x-axis.
Click ‘Close’ on the command line.

RESULT:

♦ Drafting the geometry given in P-4

Using Absolute coordinate system

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

RESULT:

♦ Drafting the geometry given in P-5

Using Relative Rectangular coordinate system

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

RESULT:

♦ Drafting the geometry given in P7

Using Absolute coordinate system

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

RESULT:

♦ Drafting the geometry given in P-8

Using Relative Rectangular coordinate system

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

RESULT:

♦ Drafting the geometry given in P-9

Using Absolute coordinate system

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

RESULT:

♦ Drafting the geometry given in P-10

Using Relative Polar coordinate system

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

RESULT:

♦ Drafting the Wood profile as shown in the given image

Using Direct Distance Entry method

Select the Line tool by entering ‘LINE’ command in the command tab.
Specify the starting coordinate of point 1 as 0,0 in the command line.
Enter the length of point 2 as 10 in the command line towards +ve x-axis.
Enter the length of point 3 as 1 in the command line towards +ve y-axis.
Enter the length of point 4 as 2 in the command line towards -ve x-axis.
Enter the length of point 5 as 4 in the command line towards +ve y-axis.
Enter the length of point 6 as 2 in the command line towards +ve x-axis.
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.
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.
Enter the length of point 9 as 2 in the command line towards +ve x-axis.
Enter the length of point 10 as 5 in the command line towards -ve y-axis.
Enter the length of point 11 as 2 in the command line towards +ve x-axis.
Click ‘Close’ on the command line.
Select the Circle tool by entering ‘CIRCLE’ command in the command tab.
Specify center point of circle as 5,4.
Specify radius of circle as 2