TABLE 1004.3.2.1
CORRIDOR FIRE-RESISTANCE RATING

OCCUPANCY	OCCUPANT 
LOAD
SERVED BY CORRIDOR	REQUIRED FIRE-RESISTANCE
RATING (hours)	
		Without
sprinkler system	With
sprinkler systemc	
H-1, H-2, H-3	All	1	1	
A, H-4, H-5	Greater than 30	1	1	
A, B, E, F, M, S, U	Greater than 30	1	0	
R	Greater than 10	1	1	
I-2a, I-4	All	Not Permitted	0	
I-1, I-3	All	Not Permitted	1b	

a. For requirements for occupancies in Group I-2, see Section 407.3.
b. For a reduction in the fire-resistance rating for occupancies in Group I-3, see Section 408.7.
c. Buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2.