WEEK 3

Aim : To Draft various geometries using Chamfer, Fillet tool in AutoCad.

Introduction: The given geometries have been drafted in Autocad 2018. Autocad offers various tools like Fillet, chamfer, offset, trim etc for optimizing the drafting process.

Procedure:

Geometry 1

1.0pen new file and set decimal and precision to 0.00.

2. Command line: From random point draw 3.00 m line and @2.12<45, 02.83 3 < 135 then 2.00m line and close.

3.Command offset: Offset 3.00m line to 1.00m and 2.50m.

4.Command circle: From midpoint of 3.00m line at 2.50m and 1.00m draw a circle of diameter of 1.20 at 1.00m and 0.80 at 2.50m.

5.Command erase: Erase the offsets.

Geometry 2

1.Open new file and set engineering and precision to O’ -0.0”.

2.Command line: 2’ -6.5^ " in negative X-axis, 3-3" in negative Y-axis, 5’-0.1" in positive X-axis, 1’-6.0" in positive Y-axis and close.

3.Command offset: offset 3-3" line at a distance of 1’-3.0" and 5’-0.1^ " at a distance of 1’ - 6.0”

4. Command circle: draw a circle of diameter of 1’ - 6.0 " from the center of offsetted lines.

5.Command erase: Erase the offsets.

Geometry 3

1.New page and select decimals with precision 0.00 while keeping ortho on.

2.Command line: Draw 3.00m line ln positive X axis.

3. 0.50 In negative Y axis, 2.50m in positive X axis, 2.50m in negative Y axis, 2.00m in negative X axis, 3.00m in positive Y axis, 250m in negative X axis, 200m in negative Y axis, 3.00m in negative Y axis and close.

Geometry 4

1.New page select decimal and precision 0.00 while keeping ortho on.

2.Command line: 6.00m vertical. 11.50m horizontal and 6.00m vertical and 11.50m horizontal.

3.ln object snap setting keep midpoint, center, intersection and geometric center on.

4.Command Circle: Draw circle at the center with diameter 3.00m

5.Command offset: offset 6.00m line at a distance of 3.00m on both sides and offset the 11.50m line at a distance of 3.00m.

6.Command circle: Draw concentric circles at the intersection of the offsetted line of diameter 1.00m and 2.00m on both sides.

Geometry 5

1.New page select decimal with precision 0.0.

2.Command line:1.5m horizontal and 1.5m vertical on both sides.

3.Command offset offset 1.5m line to 0.5m.

4. Command divide: Divide 1.5m line into 3 segments.

5.Command line-: Join the divided lines.

6.In object snap setting keep the Extension On

7.Command line Draw 20m line and 1.5m line and O.5m horizontal on top and In vertical and 1.5m horizontal and 0.5m vertical and join the slant line

8. Command line 2.0m horizontal and 1.5m vertical on both sides.

9.Command offset offset 15m line to 0.5m

10.Command divide: Divide 1.5m line into 3 segments.

11.Command line Join the divided lines.

Geometry 6

1.New page and set decimal and precision to O.

2.Command line: Drawing 210m horizontal line and 100m vertical line on left side and 75m vertical line on right side, since arc has radius of 35m drawing a line of 70m on left side and has a radius of 25m drawing a line of 50m on right side.

3.Command Arc: From start, end and radius draw an arc of radius 35m on right side and an arc of radius 25m on left side.

4.Command Circle: From midpoint of 70m line on left side draw a circle of diameter of 50m and 30m on right side.

5.Command offset Offset 210m line at a distance of 60m.

6.Command fillet: Filleting to radius 15m on top right and left and radius of 20m on inner left and radius of 6m an inner right.

7. Command offset: offsetting 210m line to Om and 100m and 75m line to 20m.

8.Command rectangle:70m length and width of 30m from off setted line on both sides.

9.Command erase. Erasing the offsetted line and unwanted lines.

Geometry 7

1.New page set decimal and precision to 0.00

2.Command circle: Draw concentric circles of diameter 5.00m and 4.00m

3.Command line: From the center point of circle draw 4.275m line on both sides.

4.Command circle: Drawing a circle of diameter 0.90m on both sides.

5.Command arc from start, end and radius draw an arc of radius 0.90 on both sides

6.Command line: Join the lines to the arc.

Geometry 8

1.New page and set Engineering and precision to O’-O ".

2.Command Line: Draw a 32’-6" horizontal line.

3.Command circle: Draw a circle of radius 8' on left side of line and radius of 9' on right side of line.

4.Command Arc: From start, end and radius drawing a arc of 41’-8” on top and 20’- 10” on bottom.

5.Command trim: trim the unwanted line and curves.

Geometry 9

1.Command rectangle: Draw a rectangle of same length and same width of one smaller size and another slightly bigger one from common center.

2.Command Rotate: Rotating the drawn squares by 45 degree keeping the copy

3.Command trim: Trim the crossing lines according to the figure.

Geometry 10

1.New page and set engineering and precision O'O"

2.Command line: Draw 10’ -2” horizontal line, 9' vertical line, 3' horizontal line, 4” -6" vertical and horizontal line and 1’-2" vertical line.

3.Command mirror: Mirror the above lines at centre axis.

4.Command offset: offset the 20’-4" to a distance of 6” - 9" and 13’ -6 " to a distance of 10’-2".

5.Command Rectangle: Draw a rectangle of length and width 3" from the centre point of off setted line.

6.Command Move: moving the centre of rectangle to the centre of offsetted line.

7. Command rotate: Rotating the Rectangle by 45 degrees.

8.Command offset: Offsetting 20’-4" to a distance of 2’-8" with polar tracking on draw an angle of 90 degrees. Offset 20-4 to a distance of 3’ – 7” with polar tracking on draw an angle of 60 degrees.

Result: The provided geometries are drafted in Autocad 2018 with the accurate dimensions.