We are working on a healthcare out patient clinic. The credit says that we will take the net usable area excluding the building equipement, vertical circulation and structure. Medical equipement related equipement will be excluded from the usable area?

The climate of riyadh city in KSA is hot dry. So would it be feasible to provide open space outside for the patients since the climate in summer is unbearable to sit outside especially during the day times even if we have provide trellis / shade canopies.
Thanks.