Creation of geometries by Coordinate system methods using AutoCad

AIM:

To Create the geometries from P-1 to P-8 using all the co-ordinate system methods.

Types of Co-ordinates:

1. Absolute Co-ordinate system

2. Relative Co-ordinate system

a) Relative Rectangular coordinate system

b) Relative Polar coordinates system

3. Direct distance entry system

Required Tools:

• Line
• Circle
• Rectangle
• Offset

PROCEDURE:

Step-1 Open the AutoCAD software

Step-2 Create a new drawing file:

APPLICATION > NEW > STARTUP FROM SCRATCH > USE TAMPLETE > USE A WIZARD

Imperial (feet & inch) acad.dwt units, angle, angle measure, angle distance, area

STEP-3 DRAW THE DRAWINGS BY USING THE TOOLS:

P-1 Drawn by using Absolute coordinate system:

TOOLS USED: Line tool

Command: L >

Command: Specify first point: (2,1)

Command: Specify next point or[Undo]: (2,8)

Command: Specify next point or[Close/Undo]: (10,8)

Command: Specify next point or[Close/Undo]: (10,7)

Command: Specify next point or[Close/Undo]: (3,7)

Command: Specify next point or[Close/Undo]: (3,2)

Command: Specify next point or[Close/Undo]: (10,2)

Command: Specify next point or[Close/Undo]: (10,1)

Command: Close

P-2 Drawn by using relative rectangular coordinate system:

TOOLS USED: Line tool

Command: L >

Command: Specify first point: (2,1)

Command: Specify next point or[Undo]: (@ 2,7)

Command: Specify next point or[Close/Undo]: (@ 3,0)

Command: Specify next point or[Close/Undo]: (@ 2,-7)

Command: Specify next point or[Close/Undo]: (@ -3,0)

Command: Specify next point or[Close/Undo]: (@ 0,4)

Command: Specify next point or[Close/Undo]: (@ -1,0)

Command: Specify next point or[Close/Undo]: (@ 0,-4)

Command: Close

P-3 Drawn by using relative rectangular coordinate system:

TOOLS USED: Line tool

Command: L >

Command: Specify first point: (2,1)

Command: Specify next point or[Undo]: (@ 0,8)

Command: Specify next point or[Close/Undo]: (@ 1,0)

Command: Specify next point or[Close/Undo]: (@ 2,-3)

Command: Specify next point or[Close/Undo]: (@ 2,3)

Command: Specify next point or[Close/Undo]: (@ 1,0)

Command: Specify next point or[Close/Undo]: (@ 0,-8)

Command: Specify next point or[Close/Undo]: (@ -1,0)

Command: Specify next point or[Close/Undo]: (@ 0,4)

Command: Specify next point or[Close/Undo]: (@ -2,-2)

Command: Specify next point or[Close/Undo]: (@ -2,2)

Command: Specify next point or[Close/Undo]: (@ 0,-4)

Command: Close

P-4 Drawn by using Direct distance entry system:

TOOLS USED: Line tool

Command: L >

Command: Specify first point: (2,1)

Command: Specify next point or[Undo]: (8) Upward

Command: Specify next point or[Close/Undo]: (7) Right side

Command: Specify next point or[Close/Undo]: (8) Downward

Command: Specify next point or[Close/Undo]: (5) Left side

Command: Specify next point or[Close/Undo]: (1) Upward

Command: Specify next point or[Close/Undo]: (4) Right side

Command: Specify next point or[Close/Undo]: (6) Upward

Command: Specify next point or[Close/Undo]: (5) left side

Command: Specify next point or[Close/Undo]: (7) Downward

Command: Close

P-5 Drawn by using Absolute coordinate system:

TOOLS USED: Rectangle tool

Command: REC >

Command: Specify first corner point or [Chamfer, Elevation, Fillet, Thickness, Width]: (2,1)

Command: Specify next corner point or[Area, Dimension, Rotation]: (8,6)

Command: Specify first corner point or [Chamfer, Elevation, Fillet, Thickness, Width]: (3,2)

Command: Specify next corner point or[Area, Dimension, Rotation]: (2,3)

Command: Specify first corner point or [Chamfer, Elevation, Fillet, Thickness, Width]: (6,2)

Command: Specify next corner point or[Area, Dimension, Rotation]: (2,3)

P-6 Drawn by using relative rectangular coordinate system:

TOOLS USED: Line tool

Command: L >

Command: Specify first point: (0,0)

Command: Specify next point or[Undo]: (@ 0,2) Upward

Command: Specify next point or[Close/Undo]: (@ 4,0) Right side

Command: Specify next point or[Close/Undo]: (@ 0,4) Upward

Command: Specify next point or[Close/Undo]: (@ -3,0) Left side

Command: Specify next point or[Close/Undo]: (@ 0,2) Upward

Command: Specify next point or[Close/Undo]: (@ 8,0) Right side

Command: Specify next point or[Close/Undo]: (@ 0,-2) Downward

Command: Specify next point or[Close/Undo]: (@ -3,0) Left side

Command: Specify next point or[Close/Undo]: (@ 0,-4) Downward

Command: Specify next point or[Close/Undo]: (@ 4,0) Right side

Command: Specify next point or[Close/Undo]: (@ 0,-2) Downward

Command: Close

P7 Drawn by using relative rectangular coordinate system:

TOOLS USED: Line tool

Command: L >

Command: Specify first point: (1,1)

Command: Specify next point or[Undo]: (@ 0,7)

Command: Specify next point or[Close/Undo]: (@ 4,-2)

Command: Specify next point or[Close/Undo]: (@ 0,-2)

Command: Specify next point or[Close/Undo]: (@ -3,0)

Command: Specify next point or[Close/Undo]: (@ 0,-2)

Command: Specify next point or[Close/Undo]: (@ 1,0)

Command: Specify next point or[Close/Undo]: (@ 0,1)

Command: Specify next point or[Close/Undo]: (@ 3,0)

Command: Specify next point or[Close/Undo]: (@ 0,-2)

Command: Close

P8 Drawn by using relative rectangular coordinate system:

TOOLS USED: Line tool & Rectangle tool

Command: L >

Command: Specify first point: (1,1)

Command: Specify next point or[Undo]: (@ 0,7)

Command: Specify next point or[Close/Undo]: (@ 5,0)

Command: Specify next point or[Close/Undo]: (@ 0,-4)

Command: Specify next point or[Close/Undo]: (@ -3,0)

Command: Specify next point or[Close/Undo]: (@ 0,-3)

Command: Close

Command: REC >

Command: Specify first corner point or [Chamfer, Elevation, Fillet, Thickness, Width]: (2,5)

Command: Specify next corner point or[Area, Dimension, Rotation]: (3,2)

PROFILE WOOD:

Drawn by using relative rectangular coordinate system:

TOOLS USED: Line tool & Circle tool

Command: L >

Command: Specify first point: (0,0)

Command: Specify next point or[Undo]: (@ 0,1)

Command: Specify next point or[Close/Undo]: (@ 2,0)

Command: Specify next point or[Close/Undo]: (@ 0,5)

Command: Specify next point or[Close/Undo]: (@ -2,0)

Command: Specify next point or[Close/Undo]: (@ 5.831>30.964)

Command: Specify next point or[Close/Undo]: (@ 5.831>329.036)

Command: Specify next point or[Close/Undo]: (@ 0,1)

Command: Specify next point or[Close/Undo]: (@ -2,0)

Command: Specify next point or[Close/Undo]: (@ 0,-4)

Command: Specify next point or[Close/Undo]: (@ 2,0)

Command: Specify next point or[Close/Undo]: (@ 0,-1)

Command: Close

Command: C >

Command: Specify center point for circle or [3P, 2P Ttr(tan tan radius)] : (5,4)

Command: Specify radius of circle or [Diameter]: select the diameter

Command: Specify diameter of circle: 2>

QUEEN POST TRUSS:

Drawn by using relative polar coordinate system & Direct entry system:

TOOLS USED: Line tool

Command: L >

Command: Specify first point: (1,1)

Command: Specify next point or[Undo]: (4) upword

Command: Specify next point or[Close/Undo]: (@ 5<45)

Command: Specify next point or[Close/Undo]: (@ 5<315)

Command: Specify next point or[Close/Undo]: (4) Downword

Command: L >

Command: Specify first point or[Undo]: (1,5)

Command: Specify next point or[Close/Undo]: (1) Right side

Command: Specify next point or[Close/Undo]: (2.536) Right side

Command: Specify next point or[Close/Undo]: (2.536) Right side

Command: Specify next point or[Close/Undo]: (1) Right side

Command: L >

Command: Specify first point or[Undo]: selecting the center point at the middle of the span

Command: Specify next point or[Close/Undo]: (3.56) upword

Command: L >

Command: Specify first point or[Undo]: (2,5)

Command: Specify next point or[Close/Undo]: (1) upward

Command: Specify next point or[Close/Undo]: selecting the center point at the middle of the span

Command: L >

Command: Specify first point or[Undo]: selecting the point 1 unit from the right side of the span

Command: Specify next point or[Close/Undo]: (1) upward

Command: Specify next point or[Close/Undo]: selecting the center point at the middle of the span

MONO PITCH

Drawn by using relative rectangular coordinate system:

TOOLS USED: Line tool

Command: L >

Command: Specify first point: (1,1)

Command: Specify next point or[Undo]: (@ 0,1)

Command: Specify next point or[Close/Undo]: (@ 6,0) Right side

Command: Specify next point or[Close/Undo]: (@ 0,2) Upward

Command: Close

Command: L >

Command: Specify first point: (3,1)

Command: Specify next point or[Undo]: (0.667) Upward

Command: L >

Command: Specify first point: (5,1)

Command: Specify next point or[Undo]: (1.333) Upward

GRIDLINES:

TOOLS USED: Line tool & Offset

Command: L >

Command: Specify first point: (0,0)

Command: Specify next point or[Undo]: (10) Upward

Command: Specify next point or[Undo]: (10) Right side

Command: Specify next point or[Undo]: (10) Downward

Command:close

Command: OFFSET>

Command: Specify offset distance or[Through, Erase, Layer]: (1) >

Command: Select object to offset or [Exit, Undo]: First verticle line >

Command: Specify point on side to offset or [Exit, Multiple, Undo]: Multiple >

Command: Specify point on side to offset or [Exit, Undo]: Next object > up to 9 offset lines

Command: OFFSET>

Command: Specify offset distance or[Through, Erase, Layer]: (1) >

Command: Select object to offset or [Exit, Undo]: First horizantal line >

Command: Specify point on side to offset or [Exit, Multiple, Undo]: Multiple >

Command: Specify point on side to offset or [Exit, Undo]: Next object > up to 9 offset lines