Creating 3D Isometric view of various structural elements in AutoCAD
Aim of the project: To draw the given 3D figures.
The drawing in the project is done with help of AUTOCAD software.
Procedure:
Step 1: The units of the drawing sheet are set to Engineering precision.
Step 2: For the first question the dimensions lines are drawn using a spherical coordinate system.
Step 3: the plan of the given drawing is drawn in 2D wireframe. and the extrude in 3 dimensional.
Step 4: layers are provided for differentiation as shown below.





Step 5: For the second question, the plan is drawn in 2d wireframe and extruded in z-direction
Step 6: the window sections are subtracted from the solid surface as shown below.



Step 7: To draw the staircase the plan is drawn in top view and rotated in the z-direction
Step 8: Boundary zone is created and the surface is extruded in the x direction as shown in the figure below.



Step 9: For the isolated footing, the plan is drawn and extruded in the z-direction


Step 10: the elevation and rendered view of the same is shown below.

Results:
All the drawings are drawn from scratch and has been created using 3D modelling.