1029.12.2.1 Dual access.
BC § 1029.12.2.1
For rows of seating served by aisles or doorways at both ends, there shall be not more than 100 seats per row. The minimum clear width of 12 inches (304.8 mm) between rows shall be increased by 0.3 inch (7.6 mm) for every additional seat beyond 14 seats where seats have backrests or beyond 21 where seats are without backrests. The minimum clear width is not required to exceed 22 inches (558.8 mm). Exception: For smoke-protected assembly seating, the row length limits for a 12-inch-wide (304.8 mm) aisle accessway, beyond which the aisle accessway minimum clear width shall be increased, are in Table 1029.12.2.1. Table 1029.12.2.1Smoke-Protected Assembly Aisle Accessways Total Number of Seats in the Smoke-Protected Assembly SeatingMaximum Number of Seats Per Row Permitted to have a Minimum 12-Inch Clear Width Aisle Accessway Aisle or doorway at both ends of rowSeats with backrestsSeats without backrestsTotal Number of Seats in the Smoke-Protected Assembly SeatingMaximum Number of Seats Per Row Permitted to have a Minimum 12-Inch Clear Width Aisle Accessway Aisle or doorway at both ends of rowSeats with backrestsSeats without backrestsLess than 4,000 14214,000 15227,000 162310,000 172413,000 182516,000 192619,000 202722,000 and greater 2128 For SI: 1 inch = 25.4 mm
