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 grider.
4. Drop column with panel
5. A wall

Command used:

• extrude
• offset
• UCS
• box
• union
• subtract
• move
• 3d orbit
• loft
• sweep
• cone
• region
• 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:

1. Open AUTOCAD, select imperial as the units are in feet and inches. go to units command and set it to enginnering, so that feet inches can be inserted.
2. 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".
3. 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 face is aligned correctly.
4. draw a line of 2" from the right side of the front view. by rec command, draw a rectangle of dimensions 32" and 2'4" (as the thickness is given as 2").
5. move the rectangle to gthe line drawn earlier 2" from the right of the face.
6. delete the line created earlier. Now with command "3do" orbit the object and select the rectangle.
7. extrude the rectangle to z-axis 2'4" leaving 2" thickness.now give the command " subtract select the larger object then the smaller extruted rectangle in 2d wireframe model.
8. Dimensions are given by dimlinear command by switching the UCS.

RESULT: The 3d model of furniture element is created.

2).

AIM: To create a 3d model of isolated footing.
PROCEDURE:

1. create a rectangle of 2'x2' on the top view. create another rectangle of 1'x1' on the top view.
2. with command "3do" orbit, robit 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.
3. click on the loft from the home toolbar and select the two rectangle to loft.
4. again, go to top view and create rectangle on top of the bigger recatngle of same size.
5. by using ucs icon command give dimensions.

RESULT:

3).

AIM: to created a 3d model of AASTHO grider using AutoCad 3d.

PROCEDURE:

1. click on front view,use ucs command and make the x and y axis in the front view plane.
2. then by line command draw the i section with the given.
   dimensions: command L draw a line of 1' that is the top width of the grider.
   with the line draw a 6" downwards. with snap on draw a line from the center of 1' and offset 3" on bothsides such that the width of web becomes 6".
3. give a taper distance and join the web and the flange. mirror the same on the other side.
   the web again a height of 1'6", offset the distance 1'6" from the end of tapering of the flange potion (1'). delete the center line drawn for the offset and also trim off the extra lines in flange.
4. extend the web to the offsite line. Again offset 6" from the last line and taper the side. mirror the tappered portion to the other side. the side should be tappered such that the bottom should be 1'6" , draw a center line and offset 9" on bothsides, then join the taper.
5. offset 6" downwards from the bottom horizontal line to define the height. to draw the taper at bottam 1'4" from the center draw line and offset 8" on bothsides.
6. extend the 6" offset line and trim the rest of lines. draw the vertical line downwards and the tarping also.
7. with 3d orbit turn the view and draw a line of 10' in z direction.click in sweep from the home toolbar and select the section and, then the path through which the section to be swept. i.e, the line
   
   
   

RESULT:

4).

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

PROCEDURE:

1. create a cricle of diameter 1'6" in the top view.
2. create a region-by-region command and select the rectangle. extrude it with in home toolbar and give a distance of 10'.
3. create a cone by clicking on cone from the home tollbar. click on diameter and give the base diameter as 1'6".
4. click on top radius and give the value as 1'6" and give the height of the cone as 1".
5. place the frustrum of cone on top of the extruded cricle i.e, the column in the front view, with snap option place such that center of two objects coinicide, also place the center of frustum with center of column in the top view.
6. in top view, create a rectangle of dimensions 4'6"x4'6".extrude it to a height of 6".
7. 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 rectangle is at bottom in the front view.

RESULT:

5).

AIM: To draw a 3d model of wall.

PROCEDURE:

1. draw a reactangle of 10'x9'. create a line in the center and offset 1.5" on both side as 3" is the width of door opening.
2. use the command BO for boundary and create the region i.e, both the region on either side of the door opening.
3. extrude the region to a height of 12'6" total height.
4. create a rectangle on place of door in the top view. move the rectangle in z axis at a height of 7' from the bottom.
5. 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.
6. mirror the lineto the other side. draw the horizontal line to join.
7. Trim off the excesss line and the center line and join the triangle with jooin command . create a region with region command. in the triangle created.
8. select the extruded rectangle and with the help of grip bring it down to the level of the triangke base on both sided. extrude the rectangle of door to a height equal to base of triangle.

RESULT: