1029.6.2 Smoke-Protected Assembly Seating
The required capacity in inches (mm) of the aisle for smoke-protected assembly seating shall be not less than the occupant load served by the egress element multiplied by the appropriate factor in Table 1029.6.2. The total number of seats specified shall be those within the space exposed to the same smoke-protected environment. Interpolation is permitted between the specific values shown. A life safety evaluation, complying with NFPA 101, shall be done for a facility utilizing the reduced width requirements of Table 1029.6.2 for smoke-protected assembly seating.
| TOTAL NUMBER OF SEATS IN THE SMOKE-PROTECTED ASSEMBLY SEATING |
INCHES OF CAPACITY PER SEAT SERVED | |||
| Stepped aisles with handrails within 30 inches |
Stepped aisles without handrails within 30 inches |
Level aisles or ramped aisles not steeper than 1 in 10 in slope |
Ramped aisles steeper than 1 in 10 in slope |
|
| Equal to or less than 5,000 | 0.200 | 0.250 | 0.150 | 0.165 |
| 10,000 | 0.130 | 0.163 | 0.100 | 0.110 |
| 15,000 | 0.096 | 0.120 | 0.070 | 0.077 |
| 20,000 | 0.076 | 0.095 | 0.056 | 0.062 |
| Equal to or greater than 25,000 | 0.060 | 0.075 | 0.044 | 0.048 |
For SI: 1 inch = 25.4 mm.
A smoke-protected assembly seating area with a roof shall have the lowest portion of the roof deck not less than 15 feet (4572 mm) above the highest aisle or aisle accessway.
Exception: A roof canopy in an outdoor stadium shall be permitted to be less than 15 feet (4572 mm) above the highest aisle or aisle accessway provided that there are no objects less than 80 inches (2032 mm) above the highest aisle or aisle accessway.
Enclosed areas with walls and ceilings in buildings or structures containing smoke-protected assembly seating shall be protected with an approved automatic sprinkler system in accordance with Section 903.3.1.1.
Exceptions:
- The floor area used for contests, performances or entertainment provided that the roof construction is more than 50 feet (15 240 mm) above the floor level and the use is restricted to low fire hazard uses.
- Press boxes and storage facilities less than 1,000 square feet (93 m2) in area.
- Outdoor seating facilities where seating and the means of egress in the seating area are essentially open to the outside.