Noise Assessment Report · MCU18/0019

Aged Care Facility, Noosaville



2 Noise Criteria

                     2.1       Noosa Plan
                     The site is presently within a detached housing zone, with a community services
                     zone (Noosa Private Hospital) on the opposite side of Goodchap Street (Noosaville
                     Zone Map ZM8).
                     The Desired Environmental Outcomes of the Noosa Plan (Part 3) provides the
                     following statement regarding residential uses:
                     The quality lifestyle sought by residents of Noosa also demands high standards of residential
                     amenity. Factors such as density, noise, accessibility to community services and infrastructure,
                     security, traffic and aesthetics are of significance.

                     Although the above statement relates to reverse-amenity when developing new
                     residential uses, the broad amenity goals are applicable for introducing potential
                     noise sources to an established residential area.

                     2.2       Road Traffic
                     External noise levels are not specified in the Nuisance Code, however for
                     consistency with other residential developments potentially affected by road traffic
                     noise within the Local Government Area and Queensland, the criteria applied are
                     adapted from the Department of Transport and Main Roads Transport Noise
                     Management Code of Practice as follows:
                           •     Private open space meets the following external noise criteria:
                                    o   ≤57 dB(A) L10 (18 hour) free field
                     Note that for facilities such as an aged care facility, it is generally considered that
                     where significant communal open areas that achieve the noise criterion are
                     available for use by residents, it is not necessary to mandate that all private open
                     space achieves the criterion.
                     Internal noise criteria are those in AS 2107 Acoustics – Recommended design
                     sound levels and reverberation times for building interiors for interior noise levels,
                     reproduced in Table 1 for residential buildings.
                     The use is more akin to a private hospital use than residential, therefore internal
                     noise levels for Health Buildings are applicable. Recommended internal noise
                     levels are reproduced in Table 1.
                     Table 1 Internal Noise Levels Extracted from AS 2107 - 2016

                      Type of                         Design sound level range        Design reverberation
                      occupancy/activity              (LAeq,t) range dB               time (T) range, s
                      Ward bedrooms –
                               Single bed             35 to 40                        0.4 – 0.7
                               Double bed             35 to 40                        0.4 – 0.7
                      Office areas                    35 to 45
                      Corridors and lobby spaces      < 50
                      Dining areas                    40 to 45

                     Where the noise level impacting on a façade is predicted to result in internal noise
                     levels exceeding the range of design sound levels in Table 1, construction
                     categories specified in AS 3671 are applied as follows:
                     Category 1. Standard construction; openings, including open windows and doors may
                     comprise up to 10% of the exposed facade. TNR of approximately 10 dB(A) is expected.


1121R1-R0                                                 13 December 2017                                              Page 2 of 10