[Tagging] Sea wall defence barrier

[Dave F.]

  On 17/09/2010 15:57, Lennard wrote:
> On 17-9-2010 16:28, Dave F. wrote:
>
>> http://en.wikipedia.org/wiki/Seawall
>>
>> There appears to be only 7 occurrences of sea wall so I'm wondering if a
>> different tag is being used, or maybe no-one's mapped them yet.
>>
>> Has anybody mapped this type of barrier before?
>
> During our import in The Netherlands[1], we're using 
> man_made=reinforced_slope. This is a kind of placeholder tag until a 
> more specific (or otherwise better) tag is found to be more common 
> place, or until a local survey classifies what type of reinforced 
> slope it is and sets better tags. Better tags don't seem to be in 
> widespread use, though, or at all.
>
> Reinforced slope was chosen as a direct translation of the dutch 
> classification in the dataset being imported. Some of these are 
> actually seawalls, some are the outer side of a dike/levee lining 
> rivers. Can't use man_made=dyke in the latter case, as that describes 
> the entire dyke, i.e. two slopes and the top bit.
>
> The idea for this placeholder tag was that a local survey would mean 
> the object got retagged, and we could recognize by the occurence of 
> man_made=reinforced_slope that a survey would still be required.
>
> The ones that are actually groynes we have already reclassified as 
> man_made=groyne during the import, as they're so easy to spot. Same 
> goes for man_made=breakwater.[2]
>
> Obviously, if man_made=reinforced_slope (and a possible subclassing) 
> would somehow be adopted as the tag to use world wide, we'd be done. :)
>
> [1] http://wiki.openstreetmap.org/wiki/3dShapes
> [2] Tagwatch counts for NL at this moment: groyne (2596), breakwater 
> (42), reinforced_slope (564).
>

Thanks for the reply.

I've never been happy using man_made as it's far too general. (instead I 
tag buildings as buildings etc..)

reinforced_slope  is to vague for me. Sometimes it's just natural 
bolders & others it's a vertical wall.

I'm thinking that as it's to protect against the waves/tide it should be 
barrier=; & taking from the wiki & general usage (UK) it should be 
sea_wall.

barrier=seawall.

Any objections?

Cheers
Dave F.