I'm working on highrise hotel and office space. Is there some sort of rule-of-thumb to consider as the floor elevation changes? For example, if the building is built in a suburban area with open land, for every 10' increase in elevation, the view to the exterior is typically 50' out from the main level. There are other considerations to keep in mind here as well, but I want to see if there's any sort of generic rule-of-thumb for this. 

Additionally, if you have documented this credit for highrise buildings, how did it go with the review and what type(s) of documentation did you use to show/indicate that a space on the 10th floor (for example) achieves this view type?