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:
                           
                        
                        
                        
                        
                        
                           
                              
                                 
                                    |  | Cabin to cabin |  | Rw = 35 | 
                                 
                                    |  | Messrooms, recreation rooms, public
                                       spaces and entertainment areas to cabins and hospitals |  | Rw = 45 | 
                                 
                                    |  | Corridor to cabin |  | Rw = 30 | 
                                 
                                    |  | Cabin to
                                       cabin with communicating door |  | Rw = 30 | 
                              
                           
                           
                         
                        
                        
                      
                     
                     
                     
                        
                        
                         
                           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.