Information Response - Email 1 of 2 MCU16/0153 & REC16/0041

calculations are presented in Attachment D. To achieve the internal acoustic quality objective of 40 dBA
LA1,adj,1hour, upgrades to the external facade of the Linea Houses would include the following:
   • Bedroom 1:
      ○  External Walls: Lightweight external walls (Rw 41): 6mm fibre cement sheeting over minimum
         76mm wide steel studwork (or 90mm wide timber studwork), lined internally with 10mm
         plasterboard sheeting and 50mm glasswool insulation in the cavity.
     ○ Roof (Rw 41): Pitched metal roof with internal 10mm plasterboard sheeting for the ceiling and
         50mm glasswool insulation in the cavity.
     ○ External Glazing (Rw 33): Acoustically rated glazing system including frame and seals, which may
         entail 10mm think laminated glass.
   • Living Room:
     ○ External Walls: Lightweight external walls (Rw 41): 6mm fibre cement sheeting over minimum
         76mm wide steel studwork (or 90mm wide timber studwork), lined internally with 10mm
         plasterboard sheeting and 50mm glasswool insulation in the cavity.
     ○ External Glazing (Rw 23): Standard glazing.
   • Bedroom 2:
     ○ External Walls: Lightweight external walls (Rw 41): 6mm fibre cement sheeting over minimum
         76mm wide steel studwork (or 90mm wide timber studwork), lined internally with 10mm
         plasterboard sheeting and 50mm glasswool insulation in the cavity.
     ○ Roof (Rw 41): Pitched metal roof with internal 10mm plasterboard sheeting for the ceiling and
         50mm glasswool insulation in the cavity.
     ○ External Glazing (Rw 23): Standard glazing.

The recommended glazing upgrades are presented in Figure 4.1 (note the Hotel is located to the right-hand
side of this plan).




8816R02V01.docx                                                                                         9