[Tagging] Buildings mixing residential and commercial use

[Martin Koppenhoefer]

sent from a phone

> Am 31.08.2015 um 23:46 schrieb John Willis <johnw at mac.com>:
> 
> Is there some easily understood dividing line between a "building" and a "high-rise building" in OSM or the real world?


I guess it is country specific, maybe even depends on the city or state. In Germany the rule is: if the top most level with an "habitable room" (these are also defined but for our purposes this would be any room where people live or work, excluding storage and facilities) is more than 22m above the surrounding terrain it is a high rise.
This rule derives from the length of fire ladders.

cheers 
Martin