J Acoustic Report · 132007.2398

                                                                                         ACOUSTICS & AIR QUALITY


Component
                 Minimum
of Buildings
               Acoustic Rating                   Acceptable Forms of Construction
  External
                    (Rw)
 Envelope
                 room is less
               than or equal to
                   1.8m2)
                     35           Single leaf of clay brick masonry at least 110mm thick with:
                                  (i) a row of at least 70mm x 35mm timber studs or 64mm
                                  steel studs at 600mm centres, spaced at least 20mm from
                                  the masonry wall; and
                                  (ii) One layer of plasterboard at least 10mm thick fixed to
  External                        outside face of studs
   walls
                                  OR
                                  Minimum 6mm thick fibre cement sheeting or weatherboards
                                  or plank cladding externally, minimum 90mm deep timber
                                  stud or 92mm metal stud, standard plasterboard at least
                                  13mm thick internally.
                     35           Concrete or terracotta tile or metal sheet roof with sarking,
   Roof                           plasterboard ceiling at least 10mm thick fixed to ceiling cavity.

                     28           Fixed so as to overlap the frame or rebate of the frame,
                                  constructed of -
                                  (i) Wood, particleboard or blockboard not less than 33mm
                                  thick; or

                                  (ii) Compressed fibre reinforced sheeting not less than 9mm
                                  thick; or
Entry doors
                                  (iii) Other suitable material with a mass per unit area not less
                                  than 24.4kg/m2; or

                                  (iv) Solid core timber door not less than 35mm thick fitted
                                  with full perimeter acoustically rated seals.

                                       Noise Category 0
  No additional acoustic treatment required – standard building assessment provisions apply.




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