APPENDIX B - WALL SCHEDULESWALL REFERENCE PROPOSED CONSTRUCTION PREDICTED SOUND INSULATION RATINGwA1 12mm Fire rated plasterboard (11.2 kg / sqm) 20mm Plywood 20mm Plywood 97mm steel stud with 50mm acoustic insulation (min 20 kg/m3)* 12mm Fire rated plasterboard (11.2 kg / sqm)Rw 51wB1 12mm fire rated plasterboard (11.2 kg / sqm) 20mm plywood 3mm thick steel mesh 20mm plywood 97mm steel stud with 50mm acoustic insulation (min 20 kg/m3) * 12mm Fire rated plasterboard (11.2 kg / sqm)Rw 51wB2 Possibility to retro-fit insulation in existing stud wall 20mm plywood (potentially 18mm) 3mm steel mesh 20mm plywood (potentially 24mm) 12mm fire rated plasterboard (11.2 kg / sqm)> Rw 31(subject to existing wall performance)wC1 12mm Fire rated plasterboard (11.2 kg / sqm) 20mm plywood (potentially 18mm) 1.6mm solid steel sheet 20mm plywood (potentially 24mm) 97mm steel stud with 75mm acoustic insulation (min 10 kg/m3)* 12mm Fire rated plasterboard (11.2 kg / sqm)Rw 50wT1 12mm standard plasterboard (7.2 kg / sqm) 97mm steel stud 12mm standard plasterboard (7.2 kg / sqm)Rw 35wT1 (Improved A) 2x12mm standard rated plasterboard (7.2 kg / sqm) 97mm steel stud with 50mm acoustic insulation (min 20 kg/m3)* 1x12mm standard rated plasterboard (7.2 kg / sqm)Rw 41wT1 (improved B) 2x12mm standard plasterboard (7.2 kg / sqm) 97mm steel stud with 50mm acoustic insulation (min 20 kg/m3) 2x12mm standard plasterboard (7.2 kg / sqm)Rw 45wT2 12mm standard rated plasterboard (7.2 kg / sqm) 97mm steel stud with 50mm acoustic insulation (min 20 kg/m3)* 12mm standard rated plasterboard (7.2 kg / sqm)Rw 38wT2 (Improved A) 2x12mm standard rated plasterboard (7.2 kg / sqm) 97mm steel stud with 50mm acoustic insulation (min 20 kg/m3)* 1x12mm standard rated plasterboard (7.2 kg / sqm)Rw 41wT2 (Improved B) 2x12mm standard plasterboard (7.2 kg / sqm) 97mm steel stud with 50mm acoustic insulation (min 20 kg/m3)* 2x12mm standard plasterboard (7.2 kg / sqm)Rw 45wT2 (Improved C -with fire rated plasterboard) 2x12mm Fire rated plasterboard (11.2 kg / sqm) 97mm steel stud with 50mm acoustic insulation (min 20 kg/m3)* 12mm Fire rated plasterboard (11.2 kg / sqm)Rw 45