Appendix 4.4 : Suitable Window Types for Noise Insulation

Suitable window types when the estimated noise level will exceed the relevant standard by β value.

[ Table Summary ]

Noise Source

Exceedance 
over Standard
Window Type I

Exceedance 
over Standard
Window Type II

Exceedance 
over Standard
Window Type III

Section Ref.s

Rail Traffic

β < 5

5 ≤ β < 10

β ≥ 10

4.2.9

Road Traffic

β < 10

10 ≤ β < 15

β ≥ 15

4.2.5

Aircraft

-

β < 10

β ≥ 10

4.2.1

Helicopter

β < 5

5 ≤ β < 10

β ≥ 10

4.2.3


WINDOW TYPES : 

I

- Openable well-gasketted window, 6mm pane

II

- Openable well-gasketted window, 8mm pane

III

- Openable well-gasketted window, 12mm laminated pane 

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   Last revision date : May 2014