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noise barriers?

Walls like these: image --Erde12 14:07, 1 March 2009 (UTC)

Suggestions: barrier=noise_barrier, barrier=soundwall, barrier=sound_berm, barrier=sound_barrier, barrier=acoustical_barrier

Sea barrier

How do I tag an underwater wall, below the sea level, and next to the beach? I mean, you can't see the wall from above, but there it is, in Roquetas de Mar beach, in the Mediterranean. --Schumi4ever 15:08, 30 December 2010 (UTC)

In INT-1 there are a suggestion, see groyne - underwater or similar in the Port section --Skippern 13:04, 31 December 2010 (UTC)

Wall vs. fence

What is the difference between a wall and a fence?

One possible definition is that you can see through (or over) a fence but you can't see through a wall.

That would be a viable definition. It's accurate and easy to evaluate on the field. However, there are types of barriers commonly called a "fence" where you can't see through. Particularly, you can't see a fence made of panels of wood planks, placed very close together. Except that you can see a little through the gaps, especially as the fence gets older and the timber shrinks. Perhaps this is enough to call it a fence.

-- T99 (talk) 05:53, 27 November 2015 (UTC)

Key "wall =" not clear: purpose, or building method ????

Not goodː "The value should indicate the principal feature of the wall, which could be the type, the purpose, or the building method"

A Key shold set a clear aspect of the objectǃ

Purpose or building method are very different thingsǃ In my opinion the key "wall" shold only set the purpose. The building methode can be additionally specified with key "material". Please rethink thisǃ

--Is-zUser (talk) 09:54, 19 April 2016 (UTC)

I agree about this. I think the barrier=wall tag should be for the types of walls just like fence_type=*. For example, wall=dry_stone, wall=brick, and wall=flint should be removed from this tag as they better fit as material=* values. Wall=yes and wall=no are perfectly fine as it can also describe details of building walls. Although I think we need a better wall type for regular brick or concrete barrier walls. Wall=yes or wall=solid either in conjunction with a material could be a solution but I feel like wall=solid instead of wall=yes could be the best option for a generic type of barrier wall. --Mxdanger (talk) 21:59, 15 January 2018 (UTC)
I agree. We have a material=* key and we should use it. Wall=yes sounds like an acceptable default. Wall=solid is going to run into problems with those walls that are built to contain gaps... --Matej Lieskovský (talk) 15:48, 17 February 2018 (UTC)