[Tagging] Are tunnels only below ground? (Was Highwaypropertyproposal "covered-yes")

Martin Koppenhoefer dieterdreist at gmail.com
Tue Nov 3 19:17:24 GMT 2009

2009/11/3 Randy <rwtnospam-newsgp at yahoo.com>

> Martin Koppenhoefer wrote:
> I concede.
> In fact my OLD Encyclopadia Britannica states that a tunnel is excavated
> underground and a "cut and cover" is not truly a tunnel.
> So the question now is how to tag an above ground "tunnel-like" structure
> to properly indicate it's characteristics, that is "completely enclosed on
> all sides, save for the openings at each end".

I would call them covered=yes (attribute)
or maybe covered=all_sides

yes, and how to tag a partly enclosed structure like a gallery in alpine
regions (usually covered on top and closed on one side by a heavy concrete
structure to protect the street from falling rock and snow).

so this could be covered=gallery

Even though gallery is somehow ambiguous if I recall right.

btw: those "cut and cover"-structures are indeed considered tunnels in some
building standards when they're logger than 80 metres (German Standard) or
~160 metres (american standard as of wikipedia:en). Should we ignore this
for simplicity or would it meet with what you usually expect by a tunnel?

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