4. Drain pipes

4.1 Copper

Copper drains are no longer used in recent apartment buildings, for reasons of cost. They can still be used for private homes (pavilions) or at the customer's request. Tubes have the same characteristics as those used for water supply.

4.2 PVC [polyvinyl chloride] drainage

PVC used in drainage is very different from that used in water supply (pressure). Technical specifications for PVC and its application are based on standards NF T 54-017, NF EN 1329-1, PRNF EN 1329 2 and 3, NF T 54-002...