Landscape design.  There are programs specific to this type of work that would have just about everything you need in the way of plantings, fences,pavers, benches, trellises, etc.

Yes, it could be done using plain AutoCAD and blocks that you find at websites like this.

Are you being paid for doing this or are you a student doing a project?

Thank you John so much for your prompt reply.
Actually my boss asked me to do that ( I am an architect but working in different field).
I saw an ad to design small landscape inside school and I want to do it badly.
I have autocad 2013 and revit 2013 also.
I want a help to guide me how can I start to put the design in  outstanding picture.

You say "inside school" in your first post.  Is the area where this "atrium" is going to be lit by natural sunlight?

What is the overall size of the area in square feet?  Can you give us the dimensions?

Will there be a "water element" of some type?

What are your plans for seating?  Will there be benches or a wall of some type (maybe rock or wood) that the students can sit on?  Will there be any flat surfaces where books or laptops can be placed?

What is the interior height?  Can small trees (like a ficus) be accommodated in the space?

Will artwork or small statuary be included in your design?

Any unusual features you'd like to include in the design?


Edited by John Connor - 27.Oct.2013 at 12:55

What program will you be using?  Plain AutoCAD or Revit?

It sounds like you will be working in metric units.  Are you using a metric template?  If the default template you are using is set up to use imperial units you could run into problems inserting metric blocks.  The same goes for using a metric template while trying to utilize blocks based upon imperial units.

Do you know how to use the Reference option of the Scale command?  That could be a possible solution.

Many blocks one finds on the Internet are 2D only although the number of available 3D blocks grows greater each passing day.  3D is the future and the future is now.

A 2D block cannot be converted to 3D until it is exploded.  Then you would create a 3D block from the 2D geometry just like you would any 3D object.

If your longest side is 24m how can you have a gazebo with a 32m diameter?

Have you at least laid out your 2D plan view of the garden yet?  If not I would get to it immediately.

Will you be using pavers for walkways or stone flags (ex. - bluestone)?  Or will the walkways be some other material like stone dust or river pebbles or rock?

I won't be of much help when it comes to rendering your final 3D layout because I my type of work does not require the use of renderings even though I do work half the time in 3D.

somaya: We need more information plus we need to see/have a copy of the base drawing you'll be working with.