20211104OBA_R2_Information_Request_Response - Acoustic RF · MCU21/0146

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[OCR of page images]
 

 

 

Glazin Examples of Typical Minimum Minimum Acoustic Performance
9 Glazing Thickness (all must be complied with)

Type B 6.38mm laminated glass Rw32 and Table 20

Type C 4mm float Rw24 and Table 20

 

 

 

 

 

In addition to comply with the above, glazing suites are to achieve the following installed minimum transmission
loss values (glazing and frame).

Table 20 — Minimum Glazing Requirements

 

Glazing Minimum installed transmission loss, dB

 

Type 63Hz 125Hz | 250Hz | 500Hz | 1kHz 2kHz | 4kHz 8Khz

 

 

 

Type A 22 27 31 34 36 37 49 52
Type B 19 22 24 30 36 33 38 42
Type C 17 20 23 26 29 28 26 38

 

 

 

 

 

 

 

 

 

 

 

All external windows and doors listed are required to be fitted with Q-lon type acoustic seals. (Mohair Seals are
unacceptable).

Where glazing is required to achieve a nominated acoustic performance the perimeter of the window frame shall
be acoustically sealed into the window opening so there is no leakage of noise between the window frame and
the building opening. The sealing method selected shall take into account and allow for any movement of the
window frame relative to the building opening and so that the acoustic performance is maintained.

IMobs\2021\202 10208\202 10208.3\20210923JJMA_R4_Development_Application_.docx 53