Which package/library for 3-d pipe+plumbing design

#1
Friends,

I am totaly new to 3-d design software. I would like to find the easiest to use 3-D pipe+plumbing design software.
All I need from this software is the ability to create a 3-d room and place some objects in it. The objects I will be puting together on the design board are pipes, corners and some more very basic plumbing objects. The best for me would be for this software to provide a library/package of pre-defined objects, so that I can drag and drop them on the design board.
Is intellicad the best solution for me?
Which library /package with pre-defined objects should I add to it?

Thank you,
Theodore.