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. Move.
5. 3d orbit
6. Cone.
7. Region.
8. Boundary.

PROCEDURE:

Open the AutoCAD, click on workspace switching and change it to 3d modelling.

DRAWING OF 3D Furniture:

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

Procedure:

• Open AutoCAD, select the units in feet and inches.Go to units command and set it to engineering.
• Create a box by clicking from the toolbar, click on length, give the length as 3' and width as 2'6", give the height as 2'6".

• Select the front face, command "ucs" and click on face and select the front face.Type the command "PLAN" so that the front face is aligned correctly.
• Draw a line of 2" from the right side of the front view . Draw a rectangle of dimension 32" and 2'4" (as the thickness is given as 2")
• Move the rectangle to the line drawn earlier 2" from the right of the face.
• 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 wireframe model.
• Give the dimensions.

Result:

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.

• Using the command "3do", 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.

• Again, go to the top view and create rectangle on top of the bigger rectangle of same size.
• Click on extrude and select the created rectangle and give the extrude height as 6" and the direction of extrusion is pointed by the mouse.

• Give the dimensions.

Result:

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 .Command 'L”, draw a line of 1' that is the top width of the girder.
• With the line command 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".

• Give a taper distance and join the web and the flange.Mirror the same on othe side.
• The web has a height of 1'6", offset the distance 1'6"from the end of tapering of the flange portion .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 1'6", draw a center line and offset 9" on both sides, then join the taper.

• Offset 6" downwards from the bottom horizontal line. 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.

• With 3d orbit turn the view and draw a line of 10' in z direction.Click on sweep and select the section and, then the path through which the section to be swept .

RESULT:

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 and create a region-by-region command and select the rectangle.Extrude it and give a distance of 10'.

• Create a cone by clicking on cone and 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 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 and also adjust in the front view or give move command and give the coordinate as 0,10',0 as the rectangle is at bottom in the front view.

RESULT:

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 on both sides of door.

• 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.

• In the front view 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.

• 3d model is drawn.
• Give the dimensions.

Result: