Fire Resistance Level (Recommendations) | 1-HR Fire Resistance Level with Sound Transmission Class 45 | 2-HRS Fire Resistance Level with Sound Transmission Class 45 | 1-HR to 2-HR Fire Resistance Level with Sound Transmission Class 50-55 |
---|---|---|---|
Stud | 64mm x 33.5mm x 0.50mm BMT | 64mm x 33.5mm x 0.50mm BMT | 92mm x 33.5mm x 0.55mm BMT |
Wall track | 64mm x 32mm x 0.50mm | 64mm x 32mm x 0.50mm | 92mm x 28mm x 0.50mm |
Wool Insulation | 50mm x 60kg/m3 | 50mm x 60kg/m3 | 90mm x 60kg/m3* |
Lining | 2 layers of 15.9mm FireShield® Gypsum Board | 1 layer of 15.9mm FireShield® Gypsum Board | 2 layers of 15.9mm FireShield® Gypsum Board |
Stud Spacing | 610mm maximum on centers | 610mm maximum on centers | 610mm maximum on centers Note: removing insulation can achieve STC 48 |
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