how to make tramplable loft not enclosed between walls from all sides?

[Lucad1]

Hello everyone, I own revit 2012 and I've been trying to use it for a few days, I have a problem, I have to make on the ground floor a single outdoor trample that does from roof to basement and from floor of the outside yard on the ground floor between two walls and not between 4, so the normal floor does not make me do it as it tells me that the selected area is not enclosed within walls on each side. How do I do that?
p.s.: in the prospectus the basement is the first layer but starts from zero altitude, should I make it start from -3m and the ground floor from 0? in case positive how do I scale the layers down now?
p.p.s.: the outer floor, besides covering the basement and having to be trampled and not to be enclosed between walls from all 4 its sides (it is square), has in addition the characteristic of having to be washed in a rectangle in the center so as to create a fresco on a courtyard positioned on the basement floor, and thus to create a courtyard also on the basement floor.
If you do not understand something ask me, then I thank you for the help you can give me!
♪

 

[Tristan]

the normal floor doesn't make me do it because it tells me that the selected area is not enclosed within walls on each side. How do I do that?

This is new to me! the floor in revit can also be suspended in air; You don't need to be leaning on 4 walls... and even on 2! are you sure to use the right command? ?

p.s.: in the prospectus the basement is the first layer but starts from zero altitude, should I make it start from -3m and the ground floor from 0? in case positive how do I scale the layers down now?

layer??? "levels" perhaps; in revit there is no layer concept
in the prospectus click on the level quota and instead of zero write us -3...

p.p.s.: the outer floor, besides covering the basement and having to be trampled and not to be enclosed between walls from all 4 its sides (it is square), has in addition the characteristic of having to be washed in a rectangle in the center so as to create a fresco on a courtyard positioned on the basement floor, and thus to create a courtyard also on the basement floor.

no no, it's all clear...but if I can afford, before using revit maybe it would be the case of following a course or reading an introductory guide. from the questions you ask, you can see that you have no idea how the software works.

 

[Lucad1]

If I had done a course I would not come to ask it here!!! ahah
However the command I try to use for the floor is floor! and let me build it by selecting the walls, how do you build it freely?
Thank you.

 

[Tristan]

If I had done a course I would not come to ask it here!!! ahah

I can't find anything to laugh... here on the forum is filled with people who follow courses or document on manuals but both the course and the manual aim to give you the basics, after which the experience masters it. Your problem is you don't even have the basics. as already reiterated in other interventions, the forum is not a help desk!

However, when drawing a loft instead of choosing the option "select walls" take the rectangle or line