Key:defensive works
| defensive_works |
| Description |
|---|
| Military constructions or buildings designed for the defence of territories in warfare |
| Group: Military |
| Used on these elements |
| Documented values: 2 |
| Useful combination |
| See also |
|
| Status: approved |
| Tools for this tag |
|
This key is used to tag individual defensive structures mainly at historic/pre-modern fortifications. It is intended for all structures that were built for the defence of territories in warfare. This includes fortified settlements as well as forts that are/were uninhabited during peacetime.
Values for defensive_works=* contain terms used in fortification engineering.[1][2][3][4][5]
How to map
Individual defensive works should be mapped as Nodes at their centre, as Ways along a centre line or as Areas along the outlines. The best fitting method depends on the size and shape of the structure. They should be tagged with defensive_works=* and may receive additional tags.
Mappers are encouraged to combine this tag with other tags where they are relevant. If a structure is actively used by the military, it is recommended to add a military=* tag to it.
Tagging
| Key | Value | Description | Statistics (Taginfo) | Sample photo |
|---|---|---|---|---|
| defensive_works | barbican | A barbican | ||
| defensive_works | bastion | A bastion. The tag defensive_works=demi-bastion also has minor usage. | ||
| defensive_works | battery | A fixed artillery battery | ||
| defensive_works | batardeau | A batardeau[6] | ||
| defensive_works | caponier | A caponier | ||
| defensive_works | cavalier | A cavalier | ||
| defensive_works | counterguard | A counterguard | ||
| defensive_works | counterscarp | A counterscarp | ||
| defensive_works | couvreface | A couvreface | ||
| defensive_works | crownwork | A crownwork | ||
| defensive_works | curtain_wall | A curtain wall. See also Defensive_wall. | ||
| defensive_works | faussebraye | A faussebraye; a lower wall in front of the main defensive wall of a fortification | ||
| defensive_works | glacis | A glacis | ||
| defensive_works | hornwork | A hornwork | ||
| defensive_works | inundation_sluice | A sluice made for military inundation | ||
| defensive_works | lunette | A lunette or demi-lune is an outwork in the shape of a half-moon. | ||
| defensive_works | moat | A moat that historically provided a fortification with a preliminary line of defence.
For moats filled with water, add the tags natural=water and water=moat. |
||
| defensive_works | motte | A motte | ||
| defensive_works | ravelin | A ravelin | ||
| defensive_works | redan | A redan | ||
| defensive_works | redoubt | A redoubt | ||
| defensive_works | reduit | A reduit | ||
| defensive_works | roundel | A roundel | ||
| defensive_works | tenaille | A tenaille | ||
| defensive_works | water_gate | A water gate | ||
| defensive_works | User-defined | Use technical terms in fortification engineering. | All commonly used values according to Taginfo | |
Tags to use in combination
- name=* - if a defensive structure is named. Do not use the name of the fortification to tag individual structures.
- heritage=* - if the structure has a heritage status. If only the entire fortification has a heritage status, do not use heritage tags for individual structures.
- building=bunker - if the structure is a bunker
- start_date=* - year of completion
- abandoned=yes - if the structure has been abandoned and shows signs of decay
- ruins=yes - if the structure is in ruins
Similar and related tags
Diagrams
References
- ↑ https://www.angelfire.com/wy/svenskildbiter/madict.html
- ↑ https://books.google.nl/books?id=6gc0AQAAMAAJ&pg=PR41-IA1#v=onepage&q&f=false
- ↑ https://books.google.nl/books?id=AUFYAAAAcAAJ&pg=PP3#v=onepage&q&f=false
- ↑ https://en.wikipedia.org/wiki/List_of_established_military_terms#Engineering
- ↑ https://en.wikipedia.org/wiki/Category:Fortification_(architectural_elements)
- ↑ https://books.google.nl/books?id=6gc0AQAAMAAJ&pg=PA122