[Tagging] How to tag a fence made with metal bars?

[Martin Koppenhoefer]

sent from a phone

> Am 05.11.2015 um 23:09 schrieb John Willis <johnw at mac.com>:
> 
> In Japan, a half-wall half-fence like thing is common.  Cinder block walls are very common for commercial and residential boundary walls, and in many places are normal 1.5m tall walls. These cinder blocks are almost as narrow as bricks - 15cm or so.


+1, good point, I've also encountered many times situations with several fences types or wall/fence combinations that are stacked one above the other, also retaining walls with a fence on top are not rare. How do we map this? Overlapping ways with layer tags? A relation?
Another not uncommon situation consists of hedges with a fence in the middle.


cheers 
Martin