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ᐅ Rainwater drainage with or without flushing chambers

Created on: 13 Dec 2015 16:19
W
wanderjupp
Original post
Our offer states that a drainage system will be installed. However, we have now noticed that no flushing chambers were included. From what I understand, these are required to meet the DIN standard. The contractor is now asking for an additional €2000, arguing that they are not necessary and that he has never built this way before.

What is correct in this case? With or without flushing chambers?

Best regards, Johannes
wpic16 Dec 2015 16:28
#13
According to drainage standard DIN 4095:1990-06 (Drainage for the protection of buildings), inspection shafts are mandatory for maintenance and inspection purposes, allowing for flushing and camera surveys. These shafts should be installed at all changes of direction.