abaco surfaces (useful, gross, covered, discovery, commercial)

[orys76]

Hello everyone
I would like to understand if it is possible to create an abacus in cun insert all the various types of surfaces (see post object)
If so, please tell me how to do it.
I can not channel a single abacus in which to insert all the various types of surfaces.
I should be able to differentiate the blanket from the discovery and set the rule for calculation.
I hope to receive answers that we will take into account the fact that I am a neophyte.
Thank you very much

 

[Tristan]

use plants in areashttp://help.autodesk.com/view/rvt/2016/ita/?guid=guid-d237e6da-cc5b-4bbe-86e1-3c8ac28cf8af

 

[orys76]

Thank you very much
I try and (if I have trouble) I'll let you know.
thanks again and good day
Hi.