2111.3.2 Floor-supported fireplaces.
BC § 2111.3.2
Fireplaces not supported on foundations shall be supported on noncombustible construction having a minimum fire-resistance rating of 3 hours for the members or assemblies in contact with the fireplace. Structural members or assemblies not directly in contact with the fireplace shall only be required to meet the fire-resistance rating specified elsewhere in this code.













