Glossary
Rainwater harvesting and use in urban buildings

Toiture inaccessible; Unaccessible roof

Roof accessible only to dedicated personnel and intended for maintenance of waterproofing, equipment or installations requiring little intervention (annual or half-yearly frequency).

Rainwater Harvesting

A technique generally used in buildings to collect rainwater intercepted by all or part of the roof and store it in a tank located in or near the building, from which it is redistributed for uses that do not require drinking water quality.

Volume utile (de stockage); Usable storage

Maximum amount of water that can be extracted from a storage device under normal conditions, usually from the overflow to the lowest extraction point.