The Ontario Building Code | Floor Assembly over Basement floor Assembly over basement

(1) Except as permitted by Sentence,,,,, or, a floor assembly immediately above a basement shall be constructed as a fire separation having a fire-resistance rating conforming to the requirements of Articles to for a floor assembly, but not less than 45 min.

(2) All loadbearing walls, columns and arches supporting a floor assembly immediately above a basementshall have a fire-resistance rating not less than that required by Sentence (1) for the floor assembly.