id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
17846	Complain about an unreasonably small buildings for types indicating bigger buildings	mkoniecz	team	"==== What steps will reproduce the problem?
1. map extremely tiny area
2. add `building=hospital` to it
3. Run validator

==== What is the expected result?
Validator complains about weirs size, like for island/islet test.

==== What happens instead?
Nothing.

==== Please provide any additional information below. Attach a screenshot if possible.
Some 3D mappers instead of using `building:part` use `building` areas.

For example see https://www.openstreetmap.org/way/302589861/history https://www.openstreetmap.org/way/302589873/history

""hospital"" with 4 or 8 square meters is always wrong and it would be useful to have an explicit warning.

Note that some building like kiosks may be extremely small so it makes only for cases where `building` tag was explicitly specified and area is below say 10 square meters or area is smaller than say 0.5 square meter.

See iD issue: https://github.com/westnordost/StreetComplete/issues/1439

{{{
URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2019-06-12 22:04:53 +0200 (Wed, 12 Jun 2019)
Build-Date:2019-06-13 01:30:52
Revision:15169
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15169 en) Linux Ubuntu 16.04.6 LTS
Memory Usage: 434 MB / 869 MB (289 MB allocated, but free)
Java version: 1.8.0_201-b09, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: :0.0 1920x1080
Maximum Screen Size: 1920x1080
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (34977)
+ PicLayer (35030)
+ buildings_tools (34982)
+ continuosDownload (82)
+ ejml (34908)
+ geotools (34908)
+ imagery_offset_db (34908)
+ jts (34908)
+ log4j (34908)
+ measurement (34977)
+ reverter (34999)
+ todo (30306)

Validator rules:
+ ${HOME}/Documents/install_moje/OSM software/josm/data/validator/deprecated.mapcss
+ ${HOME}/Documents/install_moje/OSM software/josm/data/validator/unnecessary.mapcss
+ ${HOME}/Documents/install_moje/OSM software/josm/data/validator/combinations.mapcss

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.
}}}
"	enhancement	new	normal		Core validator			template_report building area