NFPA 101 Question

[FireGuard]

Can someone explain the different rows within the NFPA 101 Table 8.3.3.2.2? For example.. for Walls under Elevator Hoistways, it has a row for 2 hour, 1 hour and 1/2 hour. How do you know which one of these rows to use? Is it based on your building or occupancy type? If so, where do I go to determine that?

 

[Sleepy]

Table 8.3.3.2.2 is about protection of openings in rated walls and partitions. If you have a 2-hour rated wall for an elevator hoistway you'd use that row of the table for openings. To determine the required rating of the hoistway you'd start looking in 8.6 Vertical Openings; 8.6.5 has required ratings. There are other hoistway requirements if the elevator is used for occupant evacuation.