Our services relating to noise in buildings (Building Acoustics)
(External Noise Intrusion, Transmission of Noise between Rooms, Noise Control in Buildings) include :

  1.   verification of compliance with requirements of Building Code of Australia (BCA) - assessment of transmission of noise
        between adjacent dwellings (impact noise, e.g. noise caused by people walking over a timber floor - see also item 8
        below, and airborne noise, e.g. noise from amplified music, noise from conversations - see also items 9 and 10 below);

  2.   verification of compliance with recommendations of Australian/New Zealand Standard: Acoustics - Recommended design
        sound levels and reverberation times for building interiors (AS/NZS 2107:2000);

  3.   assessments of proposed construction sites exposed to aircraft noise - assessments in terms of Australian Standard:
        Acoustics - Aircraft noise intrusion - Building siting and construction (AS 2021: 2000);

  4.   assessments of proposed construction sites exposed to road traffic noise - assessments in terms of Australian Standard:
        Acoustics - Road traffic noise intrusion - Building siting and construction (AS 3671: 1989);

  5.   measurements and assessments of road traffic noise on proposed construction sites (homes, schools, churches, hospitals)
        for the purpose of Development Consent from local councils - assessments according to Environmental Criteria for
        Road Traffic Noise laid down by Environment Protection Authority of New South Wales (EPA), now incorporated in
        New South Wales Office of Environment and Heritage (OEH);

  6.   determination of building facade insulation using traffic noise, by two-channel measurements with Brüel & Kjær (B&K)
        Modular Precision Real-Time Sound Analyzers type 2260 Investigator, with Sound Intensity Software BZ7205;

  7.    assessment and control of noise and vibration from building services (air-conditioning systems, ventilation fans,
         cooling towers, pumps, compressors, emergency generators);

  8.    in situ determination of impact sound insulation of floors according to Australian/New Zealand Standard: Acoustics -
         Measurements of sound insulation in buildings and of building elements - Part 7: Field measurements of impact sound
         insulation of floors (AS/NZS ISO 140.7:2006), using the tapping machine;

9.     in situ determination of airborne sound insulation between rooms according to Australian Standard/ISO 140.4-2006:
       Acoustics - Measurements of sound insulation in buildings and of building elements - Part 4: Field measurements of
       airborne sound insulation between rooms (ISO 140-4: 1998), using loudspeakers with synthetic, "pink" or "white" noise;

10.   in situ determination of airborne sound insulation between rooms and of building elements:          

       -   measurements according to ISO 15186-1:2000 - Acoustics: Measurements of sound insulation in buildings and
           of building elements using sound intensity; and

      -   based on these measurements, calculations of the Weighted Sound Reduction Index (Rw) (replacement of Sound
          Transmission Class - STC) according to Australian/New Zealand Standard: Acoustics - Rating of sound insulation
           in buildings and of building elements - Part 1: Airborne sound insulation (AS/NZS 1276.1:1999 and ISO717-1:1996);

11.   scanning of walls, windows, doors, ceilings and floors to discover areas of noise penetration - control of noise transmitted
        between adjacent rooms, control of intrusion of external noise and control of noise escaping from clubs, discotheques and
        pubs;

12.    evaluation of apartments and townhouses according to Acoustical Star Ratings for Apartments and Townhouses of
        Association of Australian Acoustical Consultants (AAAC).


NOTE that our services listed under 10 and 11 are based on state-of-the-art measurements of sound intensity.