3.5.3.1.Fire Separations for Elevator Hoistways

(1) Except as permitted by Sentence (2), a vertical service space used as an elevator hoistway shall be separated from all other portions of each adjacent storey by a fire separation having a fire-resistance rating conforming to Table 3.5.3.1. for the fire-resistance rating required by Subsection 3.2.2. for (a) the floor assembly above the storey, or (b) the floor assembly below the storey, if there is no floor assembly above. (2) Passenger elevators, other than those provided for firefighters in accordance with Article 3.2.6.5., are permitted to be located within interconnected floor space without being enclosed in a hoistway separated from the remainder of the building, provided the elevator machinery is located in a room separated from the remainder of the building by a fire separation having a fire-resistance rating not less than that required for hoistways by Sentence (1). Table 3.5.3.1. Fire Separation for Vertical Transportation Space Forming Part of Sentences 3.5.3.1.(1) and 3.5.3.2.(1) Minimum Fire-Resistance Minimum Fire-Resistance Fire-Resistance Rating of Fire Separation Rating of Vertical Service Space for Rating of Vertical Service Space for Required for Floor Assembly Elevator Hoistway Dumbwaiters less than 45 min 45 min --- 45 min 45 min 45 min 1h 1h 45 min 1.5 h 1h 1h 2 h or more 1.5 h 1h