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Australian Building Codes Board Page 7
(e)
(f)
Deemed-to-Satisfy Provisions
Where a wall required to have sound insulation has a floor above, the wall must
continue to—
(i)
(ii)
the underside of the floor above; or
a ceiling that provides the sound insulation required for the wall.
Where a wall required to have sound insulation has a roof above, the wall must
continue to—
(i)
(ii)
the underside of the roof above; or
a ceiling that provides the sound insulation required for the wall.
F5.6 Sound insulation rating of internal services
(a)
(b)
If a duct, soil, waste or water supply pipe, including a duct or pipe that is located in
a wall or floor cavity, serves or passes through more than one sole-occupancy unit,
the duct or pipe must be separated from the rooms of any sole-occupancy unit by
construction with an R w + C tr (airborne) not less than—
(i)
(ii)
40 if the adjacent room is a habitable room (other than a kitchen); or
25 if the adjacent room is a kitchen or non-habitable room.
If a storm water pipe passes through a sole-occupancy unit it must be separated in
accordance with (a)(i) and (ii).
F5.7 Sound isolation of pumps
A flexible coupling must be used at the point of connection between the service pipes in a
building and any circulating or other pump.
F5.8 Sound insulation rating of a sound sensitive space
(a)
(b)
(c)
External parts of a sound sensitive space subjected to a designated sound
exposure category must comply with Table F5.8.
Where a sound sensitive space is exposed to more than one designated sound
exposure category, the greater designated sound exposure category will apply.
Any service penetrations through an external part of a sound sensitive space must
not reduce the sound insulation required by (a).
TABLE F5.8 MINIMUM SOUND INSULATION (R w + C tr ) OF AN EXTERNAL PART OF
A SOUND SENSITIVE SPACE
PUBLIC COMMENT DRAFT
External Total area of Designated sound exposure category
part windows
serving the
room as a
percentage of 1 2 3 4 5
the floor area of
the room
Wall N/A 50 50 50 50 50
NCC2014 Volume One F5.8