Hospital with 11 floors, doors only meet a 45 minute eating. Do the doors need replacing, to meet 90 minute requirement, or do the doors with a 45 minute rating meet the requirements of Chapter 19? According to NFPA 101-2012...
Means of Egress
220.127.116.11.1.3 states you need a minimum of 2 hr. rating for 4 or more stories.
Fire protection - Vertical openings
8.6.5 (3) Existing enclosures in existing buildings... the barriers are to meet 1/2 hour requirements, which 45 minute doors are acceptable. If... a door needs to be replaced, the new door would need to meet a 90 minute rating, per: 8.6.5 (1).
18.104.22.168 Where enclosure is provided, the construction shall have not less than a 1-hour fire resistance rating.
Looking for clarification... which approach should be taken.