6.2.1 The airborne sound insulation properties
for bulkheads and decks within the accommodation shall comply at least
with the following weighted sound reduction index (Rw)
according to ISO Standard 717-1:1996 as amended (1:2006), part 1footnote:
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Cabin to cabin
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Rw = 35
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Messrooms, recreation rooms, public
spaces and entertainment areas to cabins and hospitals
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Rw = 45
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Corridor to cabin
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Rw = 30
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Cabin to
cabin with communicating door
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Rw = 30
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6.2.2 The airborne sound insulation properties
shall be determined by laboratory tests in accordance with ISO 10140-2:2010,
to the satisfaction of the Administration.