Green Building with BREEAM Hea 13: Acoustic performance Hilti contribution Criteria Hilti is happy to provide you with relevant test certificates showing the acoustic perfor- Aim mance of products in tested applications. Hilti has a team of firestop specialists and To ensure the acoustic performance account managers who can recommend the most appropriate product for any given of the building meets the appropriate application. Hilti also works closely with FIRAS accredited approved contractors to standards for its purpose. ensure precise installation of product is achieved. Assessment criteria: Example: CP 617 putty pad. • Compliance with indoor ambient noise This product is used to protect the passage of sound through electrical outlet boxes. levels according to occupancy. Tests were performed at British Gypsum in November 2007. • Fitted buildings must also have sound A base gypsum wall with 2 electrical socket boxes at each side was built up in a way insulation between acoustically-sensi- that the boxes were back to back. The electrical socket boxes were covered on the tive rooms and other occupied spaces inside with Hilti CP 617 putty pad. The result was the following: in compliance with section 7.6.3.1 of • Gypsum wall without electrical socket box: Rw = 71 dB BS 8233 and Document E. • Gypsum wall with four socket boxes back-to-back filled with Hilti • Pre-completion acoustic testing is CP 617: Rw = 71 dB carried out by a suitably qualified This means that the socket boxes were successfully protected in regards of passage acoustician. of sound and against the passage of fire by using Hilti CP 617 putty pads. page 13