IFC section 1104.1 is amended and sections added to read:
IFC section 1104.2 is amended to read:
IFC section 1104.3 is amended and sections added to read:
IFC section 1104.5 is amended and sections added to read:
The emergency power system shall provide power for not less than 30 minutes and consist of storage batteries, unit equipment, or an on-site generator. The installation of the emergency power system shall be in accordance with Section 1203.
IFC section 1104.6 and its subsections are deleted entirely and replaced with the following:
Exception: Approved existing open guards.
IFC section 1104.7 and its subsections are deleted entirely and replaced with the following:
IFC section 1104.10 and subsection 1104.10.1 are amended to read:
IFC section 1104.12 is amended to read:
IFC section 1104.16 and its subsections are deleted in their entirety and replaced with the following:
Fire escape stairs and balconies shall support the dead load plus a live load of not less than 100 pounds per square foot (4.78 kN/m2). Fire escape stairs and balconies shall be provided with a top and intermediate handrail on each side.
The fire code official is authorized to require testing or other satisfactory evidence that an existing fire escape stair meets the requirements of this section.
TABLE 1104.16
DIMENSIONS FOR EXISTING FIRE ESCAPE STAIRS
Feature: | Serving More Than 10 Occupants | Serving 10 or Fewer Occupants |
Minimum Width | 22 inches | 18 inches |
Maximum Height of Risers | 9 inches | 12 inches |
Minimum Tread Depth | 9 inches | 6 inches |
IFC section 1104.17 and its subsections are deleted entirely and replaced with the following:
TABLE 1104.17.1
CORRIDOR FIRE-RESISTANCE RATING
Occupancy | Occupant Load Served by Corridor | Required Fire-Resistance Rating (hours) | |
Without sprinkler system | With sprinkler system | ||
A, B, E, F, H, M, S, U | Greater than 30 | 1 | 0 |
I | Greater than 10 | 1 (see Section 1104.17.2.3) | 0 |
R | Greater than 10 | 1 | 0 |
TABLE 1104.17.4
COMMON PATH, DEAD-END, AND TRAVEL DISTANCE LIMITS (by occupancy)
Occupancy | Common Path Limit | Dead-End Corridor Limit | Travel Distance Limit | |||
Unspr (feet) | Spr (feet) | Unspr (feet) | Spr (feet) | Unspr (feet) | Spr (feet) | |
Group A | 20/75a | 20/75a | 20b | 20b | 200 | 250 |
Group B | 75 | 100 | 50 | 50 | 200 | 300 |
Group E | 75 | 75 | 50 | 50 | 200 | 250 |
Groups F-1, S-1d | 75 | 100 | 50 | 50 | 200 | 250 |
Groups F-2, S-2d | 75 | 100 | 50 | 50 | 300 | 400 |
Group H-1 | 25 | 25 | 0 | 0 | 75 | 75 |
Group H-2 | 50 | 100 | 0 | 0 | 75 | 100 |
Group H-3 | 50 | 100 | 20 | 20 | 100 | 150 |
Group H-4 | 75 | 75 | 20 | 20 | 150 | 175 |
Group H-5 | 75 | 75 | 20 | 50 | 150 | 200 |
Group I-1 | 75 | 75 | 20 | 20 | 200 | 250 |
Group I-2 (Health Care) | N/R | N/R | N/R | N/R | 150 | 200c |
Group I-3 | 100 | 100 | N/R | N/R | 150c | 200c |
Group I-4 (Day Care) | 75 | 100 | 20 | 20 | 200 | 250 |
Group M (Covered Mall) | 75 | 100 | 50 | 50 | 200 | 400 |
Group M (Mercantile) | 75 | 100 | 50 | 50 | 200 | 250 |
Group R-1 (Hotels) | 75 | 75 | 50 | 50 | 200 | 250 |
Group R-2 (Apartments) | 75 | 125 | 50 | 50 | 200 | 250 |
Groups R-3, R-4 | N/R | N/R | N/R | N/R | N/R | N/R |
Group U | 75 | 100 | 20 | 50 | 300 | 400 |
"Unspr" means unsprinklered and "Spr" means sprinklered.
For SI: 1 foot = 304.8 mm.
a 20 feet for common path serving more than 50 persons; 75 feet for common path serving 50 or fewer persons.
b See Section 1029.9.5 for dead-end aisles in Group A occupancies.
c This dimension is for the total travel distance, assuming incremental portions have fully utilized their allowable maximums. For travel distance within the room, and from the room exit access door to the exit, see the appropriate occupancy chapter.
d See the International Building Code for special requirements on spacing of doors in aircraft hangers.
N/R = No requirements.
IFC section 1104.18 is deleted.
IFC section 1104.19 is amended to read:
IFC section 1104.20 is amended to read:
IFC section 1104.21 is amended to read:
IFC section 1104.22 is amended to read:
IFC section 1104.23 is amended and sections added to read:
TABLE 1104.23
MINIMUM AISLE AND AISLE ACCESSWAY WIDTHS
Condition | Minimum Width (in inches) |
Aisle accessways serving seating areas having 50 or fewer seats, tables, or desks | 24 inches (610 mm) |
Aisle accessways serving seating areas more than 50 seats, tables, or desks | 30 inches (760 mm) |
Aisle accessways serving employee areas only | 24 inches (610 mm) |
Level or ramped aisles having seating on each side and serving 50 or fewer seats | 36 inches (914 mm) |
Level or ramped aisles having seating on each side and serving more than 50 seats | 42 inches (1,067 mm) |
Level or ramped aisles having seating on one side and serving 60 or fewer seats | 30 inches (760 mm) |
Level or ramped aisles having seating on one side and serving more than 60 seats | 36 inches (914 mm) |
Aisle stairs having seating on each side and serving 50 or fewer seats | 36 inches (914 mm) |
Aisle stairs having seating on each side and serving more than 50 seats | 42 inches (1,067 mm) |
Aisle stairs having seating on one side and serving 60 or fewer seats | 30 inches (760 mm) |
Aisle stairs having seating on one side and serving more than 60 seats | 36 inches (914 mm) |
Aisle stair - distance between seating and aisle handrail or guard when the aisle is subdivided | 20 inches (508 mm) |
IFC section 1104.24 is amended to read:
IFC section 1104.25 is amended and sections added to read:
Where two or more means of egress doors or exits are required from a room or area, such doors shall be separated from each other by a distance not less than one-third of the length of the maximum overall diagonal dimension of the area served.
TABLE 1104.25
TWO EGRESS DOORS OR EXITS REQUIREDa
Occupancy | Number of Occupants |
A, B, E, F, M, S, U | > 49 occupants |
H, I, R | > 10 Occupants |
R (dormitories) | > 16 Occupants (see 1104.25.1.1) |
a Two egress doors or exits shall be required when the number of occupants exceeds the number listed in the table.
IFC section 1104 is amended by adding section 1104.26 and subsections to read:
Minn. R. Part 7511.1104