[Tagging] landuse=construction vs. building=construction

[Peter Wendorff]

Hi.
I personally would use building=construction only for the building that
get's constructed currently, as it's the building key. Even a small area
around that belongs to the construction site is landuse=construction,
but building=construction (as it's no building).

But if I knew the buildings outline, I would tag it as
building=construction as it's easy to change the value later.

regards
Peter

Am 06.07.2013 03:26, schrieb L. David Baron:
> While trying to map some building construction sites in the South of
> Market (SoMA) neighborhood in San Francisco (near the office where I
> work), I was unsure whether to use building=construction or
> landuse=construction.
> 
> The documentation available at:
>   http://wiki.openstreetmap.org/wiki/Tag:landuse%3Dconstruction
>     (see "Original proposal for this tag" link to
>      http://wiki.openstreetmap.org/wiki/Approved_features/Building_site )
>   http://wiki.openstreetmap.org/wiki/Key:building
> suggests that landuse=construction should be used for a large
> construction site in which a region is covered by construction.
> There is a major such site in the area, the Transbay Terminal
> construction project, mapped as
> http://www.openstreetmap.org/browse/way/89383754 and
> http://www.openstreetmap.org/browse/way/113511443 , which is clearly
> using landuse=construction correctly.  This documentation suggests,
> on the other hand, that a single building under construction should
> use building=construction.
> 
> However, there is substantial existing usage in the neighborhood of
> landuse=construction for the construction site of a single building,
> such as many of the small rectangles in
> http://www.openstreetmap.org/?lat=37.788&lon=-122.39363&zoom=17&layers=M
> 
> Use of landuse=construction also seems to have the advantage of
> distinct rendering in the standard OSM Mapnik style and tool support
> in Potlatch, one or both of which could be the reason for the
> existing practice in the area.
> 
> In particular, I added two ways using building=construction:
>   http://www.openstreetmap.org/browse/way/228167970 is an apartment
>   tower under construction.  It's currently a structure about 15
>   stories high, and getting higher every week.
> 
>   http://www.openstreetmap.org/browse/way/227689990 is a square pit
>   in the ground that has construction vehicles digging the hole in
>   which a building is going to be built.
> 
> Though the wiki seems to suggest to me that building=construction is
> correct for both of these, it also seems possible that
> landuse=construction might be preferable, either for both, or
> perhaps only for the second.
> 
> This leads me to the questions:
> 
>  * Should these ways be tagged as building=construction or
>    landuse=construction?
> 
>  * If they should be tagged as building=construction, should the
>    standard map style display building=construction differently
>    (perhaps more like landuse=construction)?
> 
> -David
>