The requirements of a document d' urban planning are defined in article R123-11 of the code of urbanism. A prescription is in the form of a surfacing, linear or point information that appears on the graphic documents of the PLU or the POS. A prescription superimposed on an area of the document d’#x27; urban planning generally exerts an additional constraint on the settlement of the area.
__Origin__
1/Recovery of DGFIP cadastre buildings (2013 delivery)
2/Creation of 25 m (50 m/2) buffers around previously assembled buildings with an area greater than or equal to 20 m²
3/Removal of buffers with an area of less than 1 ha or less than 4 buildings (hamlet concept)
4/Combation of gaps of less than 1 ha
__Partner organisations__
DDT Aveyron
__Links annexes__
* [XML metadata view](http://ogc.geo-ide.developpement-durable.gouv.fr/csw/all-dataset?REQUEST=GetRecordById&SERVICE=CSW&VERSION=2.0.2&RESULTTYPE=results&elementSetName=full&TYPENAMES=gmd:MD_Metadata&OUTPUTSCHEMA=http://www.isotc211.org/2005/gmd&ID=fr-120066022-jdd-bab9de01-3e66-4b89-88ac-3bacfcac2141)
* [dynamic map of the urban spot](http://carto.geo-ide.application.developpement-durable.gouv.fr/100/tache_urbaine_ain.map)
[See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/48f49aad189df9b61d6fee39a49877ab96d856c9)
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