Cast iron Drainage
1st Choice
Sound attenuation
Acoustic definitions
Acoustic definitions
Acoustic definitions
Airborne through the wall
Sounds :
Structure-borne coming
from the seal
Airborne
Airborne
+ Structure-borne
Structure-borne coming from supports
European regulations
Requirements on wastewater installations
• On structure-borne noises (equipment behind the room)
Germany,
France,…
Main rooms
(living, bedroom,…)
Other rooms
(Kitchen, office…)
< 30 dB(A)
< 35 dB(A)
Conclusion
European test method formulated by CEN TC 126
• New standard EN 14366: 2004
•Acoustic property of products for construction used in buildings.
« Laboratory measurements of noise from wastewater installations »
DN 70 to 150
Inlet
Support device
Wall : 250+50 kg/m²
No sealing
CEN TC 126 is a working
group representing a
cross section of materials
(CI, Plastic, etc.)
Test Results
Application in Germany
IBP laboratory – Stuttgart (Independent Test)
Tested Ensign Cast Iron to the New standard EN 14366 : 2004
Structure-borne noises : DN 100 - 220 kg/m² wall - 4 l/s
Bracket Type
Rubber lined
Bracket RB422
Ductile Iron
bracket fitted
with separate
EG Room
Living room
25dB
UG Room
Basement
29dB
EG
UG
11dB
11dB
Conclusion
Airborne noise
Cast iron
Cast iron
Cast iron
Cast iron
>6-9dB(A) quieter than Twin-wall PVC
>10dB(A) quieter than HDPE silent
>13dB(A) quieter than stainless steel
>14dB(A) quieter than PVC-U
Airborne and structure-borne noise
Cast iron system using RB422 bracket meets the most
stringent requirement of BS8233
Cast iron system using new separate fitted to ductile
bracket EF048 = >6-9dB(A) superior to best plastic
material
Tests and Results completed:
Independent testing facility
To the new appropriate standard
Test results certified.
ALL MATERIALS SHOULD TEST TO BS EN 14366
European regulations