Structural — Acoustic Material Guide
Structural acoustic components like resilient channels decouple plasterboard from studs and joists to break vibration transmission paths. While their primary function is improving sound insulation (STC/Rw), they contribute some low-frequency panel absorption through the resilient mounting. They are a critical component of sound-rated wall and ceiling assemblies in residential and commercial construction.
Products in This Category
| Material | NRC | αw | Applications |
|---|---|---|---|
| Resilient Channel (RC-1) | 0.10 | 0.10 | Wall (behind plasterboard), Ceiling (behind plasterboard) |
Average Absorption Profile
Average absorption coefficients across all structural materials at each octave band frequency.
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
|---|---|---|---|---|---|---|
| Avg α | 0.20 | 0.12 | 0.08 | 0.05 | 0.04 | 0.04 |
Best Applications
Room types and environments that benefit most from structural materials:
Related Standards
International and national standards relevant to structural selection, testing, and specification:
Installation Notes
Resilient channels must be installed with the open side facing down and only screwed through the flange, never through the web. Bridging with misplaced screws completely negates the decoupling effect. Maximum screw spacing is 300mm along the flange.
Typical thickness: 13mm channel + plasterboard
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