It is important to strike a balance with the number of seats between aisles, and aisle width. More seats between aisles usually equates to wider aisles. Additionally, increasing the number of seats between aisles generally requires a deeper row spacing. It may make more sense to add an aisle to reduce excessively wide aisles.
Aisle widths are determined based on established minimum clear widths and/or per-person formulas. When an aisle serves more than 50 seats, the following minimum aisle widths apply:
- 48” for aisles serving seating on each side.
- 36” for aisle serving seating on only one side.
Differing aisle widths apply to a Smoke Protected vs. a Non-Smoke Protected facility.
Smoke Protected Assembly Seating requirements:
- .2” for each person served with handrails within 30”.
- .250 for each person served without handrails within 30”.
Non-Smoke Protected Assembly Seating requirements:
- .3” for each person served with handrails within 30”.
- .375 for each person served without handrails within 30”.
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