[HOT] NGA Damage assessment report

[Vivien Deparday]

Hi all,
a bit of feedback on this instruction for road damage assessment that are
on the tasks, I think they could be clarified a bit:

- while reviewing a post disaster task (350), I have found a road duplicate
that had been created just to mark the damage on it instead of marking the
existing pre-disaster road. This is currently not very clear in the
workflow description, it says 'Please make a segment covering the damages
and mark it' . The  'make' could mean create a new road or it could mean
split the existing one to mark only the affected part of the roads. I
suppose it is the latter but it could be made a bit clearer like it is
written in capital for the buildings.

- Also, it is not very clear how the road obstacle and the impassable
section should be marked and related to each other. Do you mark the whole
road as impassable from one road block to the other but then you do really
need to mark the road blocks themselves? I suppose it would still be useful
to mark them if they are road blocks that are in the middle of an
impassable section because then one can know how many debris have to be
removed.
If there is a section of road between two road blocks that had no debris,
should it be marked passable or impassable (since you cannot get to it),
etc...?
It seems like all the road blocks should be added to the existing roads as
new nodes belonging to the road and marked as barrier, and also each
segment between the road blocks should be marked as impassable? It seems
like that shouldn't mess the database? Anyone with more experience on that?

Once there is agreement, it should be described clearly on the workflow
tab, maybe with a link to a wikipage with more details.

I just had a look at the shapefile from NGA and they are only road segment
marked as impassable.

Cheers,

Vivien
GFDRR Labs


On Mon, Nov 18, 2013 at 10:33 AM, Pierre Béland <pierzenh at yahoo.fr> wrote:

> Hi all,
>
> The tags to be used for tagging roads are described in the Workflow panel
> of Task Manager job http://tasks.hotosm.org/job/350
>
> If any questions, dont hesitate to contact us or come discuss on the #HOT
> Irc.
>
> Thanks to all,
>
> Pierre
>
>   ------------------------------
>  *De :* Andrew Buck <andrew.r.buck at gmail.com>
> *À :* HOT <hot at openstreetmap.org>
> *Envoyé le :* Lundi 18 novembre 2013 9h33
> *Objet :* [HOT] NGA Damage assessment report
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hello everyone.  I have recieved a copy of a damage report in the form
> of a shapefile from the US NGA (National Geospatial Agency).  You can
> open it in JOSM with the OpneData plugin and it will prompt you to
> load a particular layer from within the zip file.  There are several
> layers which could be of use to OSM but the most useful is the damaged
> roads and bridges layers.  I would like to make this available to the
> community to use to mark the appropriate road segments imapssable
> (please check to find the correct tagging as I do not know exactly how
> to tag that).
>
> https://www.dropbox.com/s/nt933i7n5s85nzi/17NOV13_R3_Final.zip
>
> Make sure you let everyone here know if you plan to work on merging in
> this road damage information so that we don't get multiple people
> doing it at once.  Also, let us know what tags you will be using and
> where you found that information so we can pass that along to the orgs
> we are working with.
>
> - -AndrewBuck
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