Tag:barrier=retaining_wall

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Public-images-osm logo.svg barrier = retaining_wall
Retaining wall.png
Description
A structure that holds back soil or rock from a building, structure or area.
Rendering in openstreetmap-carto
Barrier fence mapnik.png
Group: Barriers
Used on these elements
should not be used on nodesmay be used on waysshould not be used on areasshould not be used on relations
Wikidata
Status: approvedPage for proposal

A retaining wall is a structure that holds back soil or rock from a building, structure or area. Retaining walls prevent downslope movement or erosion and provide support for vertical or near-vertical grade changes.

Also consider man_made=embankment for a raised bank to carry a road, railway, or the like.

Also consider one-sided cutting=*s if it lines a highway and isn't a man-made wall. They're more flexible (but slightly less accurate) if you're refining an established way which already has other aspects that rely on its direction, such as already being oneway=yes or cycleway:left=lane, that would need to change to incorporate barrier=retaining_wall's "right side is bottom, left side is top" convention.

How to map

ElementWay.png
Element retaining wall rend.png

barrier=retaining_wall behaves same as natural=cliff, that is no crossing as left-right are different heights. Lower side on right side of way direction, often rendered with dots, triangles or the like.

Other tags commonly used with barrier=retaining_wall:
height=*, the height of the wall
material=*, what the wall is made of


Example