Creating various 3D Models like Furniture, Footing, Girder, Column drop with panel and Gable Wall in AutoCad

AIM: To create 3D model and view of:

1. Furniture element
2. Isolated footing
3. AASTHO type girder
4. Drop column with panel
5. A wall

Commands used:

1. Extrude.
2. Offset.
3. UCS.
4. Box.
5. Union.
6. Subtract.
7. Move.
8. 3d orbit.
9. Loft.
10. Sweep.
11. Cone.
12. Region.
13. Boundary.

PROCEDURE:

Open the AutoCAD, click on workspace switching and change it to 3d modelling and click on the home button near the view cube.Set the limits and zoom - all.

DRAWING OF 3D FURNITURE ELEMENT:

1).

Aim: To create a 3D model of the furniture element.

Procedure:

• Open AutoCAD, select imperial as the units are in feet and inches.Go to units’ command and set it to engineering, so that feet inches can be inserted.
• Create a box by clicking from the toolbar or box command, click on length, give the length as 3' and width as 2'6".Height is to be specified, give the height as 2'6".

• Select the front face, command "ucs" give the x and y coordinate in the front face horizontally and vertically respectively or click on face and select the front face.

• Type the command "PLAN" so that the front face is aligned correctly.

• S Draw a line of 2" from the right side of the front view .By rectangle command, draw a rectangle of dimension 32" and 2'4"

• Extrude the rectangle to -z axis 2'4" leaving 2" thickness.Now give the command "Subtract" select the larger object then the smaller extruded rectangle in 2d wirefram.

2).

3D MODEL OF ISOLATED FOOTING:

Aim: To create a 3d model of isolated footing

Procedure:

• Create a rectangle of 2' x2' on the top view.Create another rectangle of 1'x1' on the top view.
• with command "3do" 3d orbit, orbit the view to a suitable one.With "M” move command move the small rectangle of 1'x1' by 2' in + z direction ,with ortho on.
• create rectangle on top of the bigger rectangle of same size.Click on extrude from the home toolbar and select the created rectangle and give the extrude height as 6".
• 

3).

3D MODEL OF A AASTHO TYPE GIRDER

Aim: To create a 3d model of AASTHO type girder using AutoCAD 3d.

Procedure:

• Click on front view.Use UCS command and make the x and y axis in the front view plane
• Then by line command draw the I section with the given dimension.Command 'L”, draw a line of 1' that is the top width of the girder.
• the line draw a 6" downwards.With snap on draw a line from the center of 1' and offset 3" on both sides such that the width of web becomes 6".

• given a height of 1'6", offset the distance 1'6"from the end of tapering of the flange portion (1').Delete the center line drawn for the offset and also trim off the extra lines in flange.

Extend the web to the offsite line.Again offset 6" from the last line and taper the sides.Mirror the tapered portion to the other side.The sides should be tapered such that the bottom should be 1'6", draw a center line and offset 9" on both sides

• Offset 6" downwards from the bottom horizontal line to define the height.To draw the taper at bottom 1'4”, from the Centre draw a line and offset 8" on both sides.
• Extend the 6" offsite line and trim the rest of lines.Draw the vertical line downwards and the tapering also.

• With 3d orbit turn the view and draw a line of 10' in z direction.

4).

3D MODEL OF A DROP COLUMN WITH PANEL

Aim: To draw the 3d model of a drop column with panel section and show its isometric view.

Procedure:

• Create a circle of diameter 1'6” in the top view.
• Create a region-by-region command and select the rectangle.Extrude it with extrude in home toolbar and give a distance of 10'.

• Create a cone by clicking on cone from the home toolbar.Click on diameter and give the base diameter as 1'6".
• Click on top radius and give the value as 1'6" and give the height of the cone as 1".

• Place the frustum of cone on top of the extruded circle i.e. the column in the front view, with snap option place such that the center of two objects coincide ,also place the center of frustum with center of column in the top view.

• In the top view, place the rectangle at the center of cone

5).

3D MODEL OF WALL

Aim: To draw a 3d model of wall.

Procedure:

• Draw a rectangle of 10' x 9".Create a line in the center and offset 1.5" on both sides as 3" is the width of door opening.
• Use the command "BO" for boundary and create the region i.e., both the region on either side of the door opening.

• Extrude the region to a height of 12'6" total height.

• Create a rectangle in place of door in the top view.Move the rectangle in z axis at a height of 7' from the bottom.

• go to front view and draw a line from the center of the moved line of door. Draw slanting line from the total height from the center line intersecting the edge.

  Mirror the line to the other side.Draw the horizontal line to join.

• trim off the excess line and the center line and join the triangle with join command.Create a region with region command in the triangle created.

Results:

1.

2.

3.

4.

5.