Creating 3D Isometric view of various structural elements in AutoCAD

CHALLENGE- 12

INTRODUCTION- COMMANDS USEDFOR DRAWING THE 3D OBJECTS ARE AS FOLLOWS.

- Extrude- Location: Draw > Modeling > Extrude

This AutoCAD 3D Extrude command allows the user to create a 3D object by extruding a 2D face along a line or path.

- Sweep- Location: Draw > Modeling > Sweep

This command helps the user to extrude the 2D objects without the 2D face being orthogonal to the beginning of the path.

- Union- Location: Modify > Solids Editing > Union

This AutoCAD 3D command allows the user to combine two objects converting into one single object.

- Subtract- Location: Modify > Solids Editing > Subtract

This command is opposite to the union command; this command works when there is a common area in both the objects. Then this command subtracts the object A from the object B.

- Intersect- Location: Modify > Solid Editing > Intersect

With this AutoCAD 3D command the user is left with the area that is common to both the objects.

- Revolve- Location: Draw > Modeling > Revolve

This AutoCAD 3D command creates a 3D solid by revolving a 2D object around an axis.

PROBLEM-1

AIM- TO DRAW 3D ISOMERTIC VIEW OF BUILDING.

STEPS- Open Auto Cad.

• In the right left corner click on the settings icon that is the icon of workspace.
• Select 3d modelling.
• Enter UN (Units ) command in the command box and change the type as engineering and select precision as 0’-0’’.
• Now enter Dim style in command box and modify the settings and select primary units as engineering and give precision as 0’-0’’.
• Select line command and draw in top or 2D mode.
• Draw line of 10’9 in X as well as in Y direction.
• Offset command is used to draw the windows.
• Convert the drawing to the 3D ode.
• Select the boundary command and make separate boundaries of walls and windows.
• Create the region using the region command.
• Extrude the walls at the height of 10’-10’’.
• Open layer properties and assign layers to different components.
• Assign layers and colors to 3D walls, window frame, window glass etc.
• Draw the windows as desired shown in the figure using the line command.
• Use dim linear command to give dimensions to the figure.

PROBLEM-2.

AIM- TO CREATE 3D VIEW OF BILDING FAÇADE.

STEPS-

• Open Auto Cad.
• In the right left corner click on the settings icon that is the icon of workspace.
• Select 3d modelling.
• Enter UN (Units ) command in the command box and change the type as engineering and select precision as 0’-0’’.
• Now enter Dim style in command box and modify the settings and select primary units as engineering and give precision as 0’-0’’.
• Select line command and draw in top or 2D mode.
• Draw a line of 6’9 in X direction and 10’-9’’ in the Y direction.
• Offset command is used to draw the windows.
• Convert the drawing to the 3D mode
• Select the boundary command and make separate boundaries of walls and windows.
• Create the region using the region command.
• Extrude the walls at the height of 40’-10’’ that is the complete height of the building.
• Move the window to the desired heights and draw the windows.
• Open layer properties and assign layers to different components.
• Assign layers and colors to 3D walls, window frame, window glass etc.
• Draw the windows as desired shown in the figure using the line command.
• Use dim linear command to give dimensions to the figure.

PROBLEM 3-

AIM- TO DRAW 3D ISOMETRIC VIEW OF STAIR WITH RAILING.

STEPS-

• Open Auto Cad.
• In the right left corner click on the settings icon that is the icon of workspace.
• Select 3d modelling.
• Enter UN (Units ) command in the command box and change the type as engineering and select precision as 0’-0’’.
• Now enter Dim style in command box and modify the settings and select primary units as engineering and give precision as 0’-0’’.
• Select line command and draw in top or 2D mode.
• Assumed width of staircase is 3’, width of tread is 1’, height of riser is 6’’
• Line command is used to draw the staircase.
• Offset command is used to give the thickness of waist slab as 6’’.
• Select the boundary command and make a single boundary of the plan of staircase
• Create the region using the region command.
• Select the command 3D orbit and rotate the staircase as we want to extrude.
• Extrude the staircase to the length of 3’.
• Create the handrails by using the circle command.
• Extrude the circle to the height of 3’
• Copy the railing and paste n on every tread.
• Using the polyline command join all the tops of the handrail. Use sweep command to draw the top baluster.

PROBLEM-4.

AIM- TO CREATE A 3D VIEW OF WALL WITH SPREAD FOOTING.

STEPS-

• Open Auto Cad.
• In the right left corner click on the settings icon that is the icon of workspace.
• Select 3d modelling.
• Enter UN (Units ) command in the command box and change the type as engineering and select precision as 0’-0’’.
• Now enter Dim style in command box and modify the settings and select primary units as engineering and give precision as 0’-0’’.
• Select line command and draw in top or 2D mode.
• Draw the plan as shown in the figure.
• Command boundary to create different boundaries.
• Command region to create the regions for extruding.
• Extrude the plan to the desired heights to draw the wall footing.
• Open layer properties and assign layers to different components.