[openrailwaymap] Rail movement joint/expansion device/Auszugvorrichtung

[Michael Kümmling]

Hello,

Translation of railway terms is difficult, as wording differs almost
completely between British English and American English. Furthermore, I
made the experience, that European standard documents (EN, UIC leaflets,
EU legislation, ...) are a bad source, as they often use unusual language.

I found "adjustment switch" for British English (Iain Ellis: Ellis'
British Railway Engineering Encyclopaedia; Railway Group Standard
GC/RC5603 Standard Definitions of Civil Engineering Terms) and
"expansion joint" for American English (TCRP Report 155: Track Design
Handbook for Light Rail Transit). But thats the only American source
I've found.

In British English, expansion joint denotes a normal rail joint with an
expansion gap between rails (same sources as above).

I guess, you have to choose some tag in the end...


Micha

On 22.06.2015 21:53, Martin Simon wrote:
> (German below)
> 
> Dear railway mappers,
> 
> I would like to add some detail on railway and tram lines in my area and
> have been searching for a tag for "rail movement joints" / "railway
> expansion devices" (I found these terms online, the German term is
> "Auszugvorrichtung").
> 
> The feature in question is a device often found on railways at bridges
> or long straight tracks. It allows the tracks (and the bridge undereath)
> to expand or shrink in length (as a result of temperature change)
> without damage.
> 
> This seems to be the matching DIN
> EN: http://www.fsf.din.de/cmd?level=tpl-art-detailansicht&committeeid=54739023&artid=145904940&languageid=de&bcrumblevel=3&subcommitteeid=54767812
> 
> ...and BS EN: http://shop.bsigroup.com/ProductDetail/?pid=000000000030214647
> 
> How should we tag these features in OSM?
> 
> railway=movement_joint?
> 
> railway=expension_device?
> 
> Which object type should be used? From a map perspective, they might be
> "point" features, marking the point where the tracks are cut. If you're
> a railway planner, however, you need to consider that the device itself
> has a length of several meters - not as big as the average
> switch/turnout, but still...
> 
> -Martin
> 
> 
> Hallo Eisenbahn-Mapper!
> 
> Ich habe nach einem tag für Auszugvorrichtungen (Konstruktionen zur
> Aufnahme der Wärmedehnung der Schienen an Brücken oder langen Geraden)
> gesucht, weil ich ein paar Details zu Streckenabschnitten nachtragen
> wollte, mit denen ich zu tun hatte.
> 
> Wie sollen wir so etwas taggen?
> 
> Im Netz habe ich die oben aufgeführten Übersetzungen gefunden, die zu
> den genannten tags führen könnten.
> 
> Weiterhin müsste man sich gedanken machen, ob man die Stelle der
> Trennung als Punkt taggen will (generalisiert) oder die ganze
> Konstruktion von Schweißnaht zu Schweißnaht als Linie erfassen möchte.
> letzteres ist mit unserer erreichbaren Positionsgenauigkeit natürlich
> nicht ganz so einfach.
> 
> Gruß,
> 
> Martin
> 
> 
> 
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