We have a project with a Roof / Terrace space. This space has turf areas and also some Planters; along with the walkable "pavers" and concrete areas. There are also some shade Structures on this these roof terraces.

We are looking for advice on how GBCI wants us to calculate the turf areas and planter areas for heat island. Are they excluded from the roof total? 

are they accounted for in another manner?

thank you