Hi,
Please follow bleow community link which I posted few weeks back, which explain floorplan calucalation
http://community.arubanetworks.com/t5/Network-Management/VisualRF-resize-problem/m-p/290410#M6371
Regarding walls not showing after provisioning done, make sure check the box while selecting the wall type from drop down list in CAD layer.
Currently we have only four Wall Attenuations in VisualRF, if you have any different wall type, try manuall create new wall attenuation from Visualrf> Setup page.
I see you have selected wood type, since it is not present in the VisualRF attenuation list, it is not displaying.
Regards,
Pavan
If my post addresses your query, give kudos:)