Cast iron Drainage 1 st Choice Sound attenuation.
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Transcript of Cast iron Drainage 1 st Choice Sound attenuation.
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Cast iron Drainage1st Choice
Sound attenuation
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Acoustic definitions
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Acoustic definitions
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Sounds :
Structure-borne comingfrom the seal
Airborne Airborne
+ Structure-borne
Structure-borne coming from supports
Airborne through the wall
Acoustic definitions
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Requirements on wastewater installations
• On structure-borne noises (equipment behind the room)
European regulations
Main rooms (living, bedroom,…)
Other rooms (Kitchen, office…)
Germany, France,…
< 30 dB(A) < 35 dB(A)
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Conclusion
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« Laboratory measurements of noise from wastewater installations »
Inlet
Support device
DN 70 to 150
Wall : 250+50 kg/m²
No sealing
European test method formulated by CEN TC 126
CEN TC 126 is a working group representing a cross section of materials (CI, Plastic, etc.)
• New standard EN 14366: 2004
•Acoustic property of products for construction used in buildings.
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Test Results Application in Germany
Structure-borne noises : DN 100 - 220 kg/m² wall - 4 l/s
EG
UG
IBP laboratory – Stuttgart (Independent Test)
Tested Ensign Cast Iron to the New standard EN 14366 : 2004
Bracket Type
Rubber lined Bracket RB422
Ductile Iron bracket fitted with separate
EG Room Living room
UG Room Basement
25dB 29dB
11dB 11dB
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ConclusionAirborne noise
Cast iron >6-9dB(A) quieter than Twin-wall PVCCast iron >10dB(A) quieter than HDPE silentCast iron >13dB(A) quieter than stainless steelCast iron >14dB(A) quieter than PVC-U
Airborne and structure-borne noiseCast iron system using RB422 bracket meets the most stringent requirement of BS8233Cast iron system using new separate fitted to ductile bracket EF048 = >6-9dB(A) superior to best plastic material
Tests and Results completed:Independent testing facilityTo the new appropriate standardTest results certified.
ALL MATERIALS SHOULD TEST TO BS EN 14366
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European regulations