2014-09-02 12:16 GMT+02:00 Richard Z. <ricoz....@gmail.com>: > Are there floating bridges other than pontoon bridges? >
yes, there are bridges supported by boats. These are generally not called "pontoon". > > Should pontoon be moved into bridge:structure and replace > "floating"? > for me "floating" isn't a kind of structure, it is a way of supporting load (instead of leading it into the ground it gets supported by the water). Besides this, "pontoon" could maybe be a kind of structure, instead of pillar or pylon for instance, which leads to another issue: structure should probably be separated into the horizontal piece atop carrying the load of the carriageway (span, truss, beam, girder, frame, arch, post ...) and the vertical pieces getting these forces into the ground (or on the water). Sometimes this is the same (e.g. a simple arch), but often it is not. You could alternatively also expect the material / construction details of the pontoon in the tag for structure. I think bridges are a vast topic which ideally could be structures with the help of a civil engineer (even better someone specialized in bridges), to come to a solid tagging. Once the tags are developed and documented it will be very easy also for a layman to classifiy a distinct bridge in detail with very few tags. By a quick search I have found this page with english terminology: http://pghbridges.com/termsBrg.htm They do also provide some nice schemes for a few basic bridge types: http://pghbridges.com/basics.htm cheers, Martin
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