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4. Glossary
Altitude
The elevation of a building is that of its main entrance.
ANRU
Agence nationale pour la rénovation urbaine ( http://anru.fr ).
Bay
An opening in an exterior wall is used for lighting, passage or ventilation. A transparent or translucent wall is considered a bay.
Attached buildings
Two buildings are said to be adjoined if they are juxtaposed and linked by adjoining walls, with a contact area of at least 15 m 2 for houses and 50 m 2 for other buildings. Attached buildings are considered as a single building.
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