[Tagging] Waterway direction

[John F. Eldredge]

On 09/01/2010 02:03 PM, M∡rtin Koppenhoefer wrote:
> 2010/9/1 Anthony <osm at inbox.org>:
>
>   
>>> http://dict.leo.org/?lp=ende&search=d%C3%BCker
>>>
>>> OK, got it (but the article is not mainly fitting):
>>> http://en.wikipedia.org/wiki/Inverted_siphon
>>>       
>> Ah, I see.  But that wouldn't be tagged as a waterway, would it?
>>     
>
> Why shouldn't it? Probably depends on the situation, but if the occur
> on an object that we generally tag with waterway, it should be clear.
> This technique was already used in ancient Rome for special parts of
> aqueducts (where they had to bypass an obstacle). Aren't they a kind
> of culvert? Btw.: I just found out that in the case of wastewater this
> is called a depressed sewer in English.
>
> http://www.kw-ag.at/Files/inverted.jpg
> http://www.k0lee.com/blog/uploaded_images/siphon2-775129.jpg
> http://www.expogreenway.org/Inverted%20Siphons.htm
>   
I am not sure whether that would be classified as a type of culvert or
not.  Do we have any civil engineers on the mailing list who could
answer that question?